class TestComponent (Component):
runs = dict(method1=0, method2=0, method3=0)
m4data = []
def method1 (self):
self.runs['method1'] += 1
method1 = automatic(method1)
def method2 (self):
self.runs['method2'] += 1
method2 = automatic(method2, 0)
def method3 (self):
self.runs['method3'] += 1
def method4 (self):
self.m4data.append(time.time())
method4 = automatic(method4, 4)
class RetransSend(Component):
name = "RetSend"
implementation = "RetSend"
def __init__ (self, *args, **kwargs):
Component.__init__(self, *args, **kwargs)
self.count = 0
def sendMessage(self):
self.count += 1
print "Sending Message: seq %d" % self.count
ComponentProxy("RetRecv", defer=False, retry=False).catchMessage("messgae %d caught." % self.count)
sendMessage = automatic(sendMessage, 10)
class TimingServiceLocator(ServiceLocator):
"""ServiceLocator with passive expiration.
Attributes:
expire -- number of seconds to expire a service
Methods:
expire_services -- check service timestamps (automatic)
"""
implementation = "slp"
logger = logging.getLogger("Cobalt.Components.TimingServiceLocator")
def __init__(self, expire=180, *args, **kwargs):
"""Initialize a TimingServiceLocator.
Keyword arguments:
expire -- Number of seconds when services expire.
Additional arguments are passed to ServiceLocator.
"""
ServiceLocator.__init__(self, *args, **kwargs)
self.expire = expire
def expire_services(self):
"""Check each service timestamp.
Unregister expired services.
"""
now = time.time()
for service in self.services.values():
if now - service.stamp > self.expire:
self.logger.info("%s expired" % (service.name))
self.unregister(service.name)
expire_services = automatic(expire_services)
class Simulator(BGBaseSystem):
"""Generic system simulator.
Methods:
configure -- load partitions from an xml file
reserve_partition -- lock a partition for use by a process_group (exposed)
release_partition -- release a locked (busy) partition (exposed)
add_process_groups -- add (start) a process group on the system (exposed, query)
get_process_groups -- retrieve process groups (exposed, query)
wait_process_groups -- get process groups that have exited, and remove them from the system (exposed, query)
signal_process_groups -- send a signal to the head process of the specified process groups (exposed, query)
update_partition_state -- simulates updating partition state from the bridge API (automatic)
"""
name = "system"
implementation = "simulator"
logger = logger
MIN_RUN_TIME = 60
MAX_RUN_TIME = 180
def __init__(self, *args, **kwargs):
BGBaseSystem.__init__(self, *args, **kwargs)
self.process_groups.item_cls = BGSimProcessGroup
self.config_file = kwargs.get("config_file", None)
self.failed_components = sets.Set()
if self.config_file is not None:
self.configure(self.config_file)
def __getstate__(self):
flags = {}
for part in self._partitions.values():
sched = None
func = None
queue = None
if hasattr(part, 'scheduled'):
sched = part.scheduled
if hasattr(part, 'functional'):
func = part.functional
if hasattr(part, 'queue'):
queue = part.queue
flags[part.name] = (sched, func, queue)
return {
'managed_partitions': self._managed_partitions,
'version': 2,
'config_file': self.config_file,
'partition_flags': flags
}
def __setstate__(self, state):
self._managed_partitions = state['managed_partitions']
self.config_file = state['config_file']
self._partitions = PartitionDict()
self.process_groups = BGProcessGroupDict()
self.process_groups.item_cls = BGSimProcessGroup
self.node_card_cache = dict()
self._partitions_lock = thread.allocate_lock()
self.failed_components = sets.Set()
self.pending_diags = dict()
self.failed_diags = list()
self.bridge_in_error = False
self.cached_partitions = None
self.offline_partitions = []
if self.config_file is not None:
self.configure(self.config_file)
if 'partition_flags' in state:
for pname, flags in state['partition_flags'].items():
if pname in self._partitions:
self._partitions[pname].scheduled = flags[0]
self._partitions[pname].functional = flags[1]
self._partitions[pname].queue = flags[2]
else:
logger.info("Partition %s is no longer defined" % pname)
self.update_relatives()
self.lock = threading.Lock()
self.statistics = Statistics()
def save_me(self):
Component.save(self)
save_me = automatic(save_me)
def configure(self, config_file):
"""Configure simulated partitions.
Arguments:
config_file -- xml configuration file
"""
def _get_node_card(name):
if not self.node_card_cache.has_key(name):
self.node_card_cache[name] = NodeCard(name)
return self.node_card_cache[name]
self.logger.info("configure()")
try:
system_doc = ElementTree.parse(config_file)
except IOError:
self.logger.error("unable to open file: %r" % config_file)
self.logger.error("exiting...")
sys.exit(1)
except:
self.logger.error("problem loading data from file: %r" %
config_file)
self.logger.error("exiting...")
sys.exit(1)
system_def = system_doc.getroot()
if system_def.tag != "BG":
self.logger.error("unexpected root element in %r: %r" %
(config_file, system_def.tag))
self.logger.error("exiting...")
sys.exit(1)
# that 32 is not really constant -- it needs to either be read from cobalt.conf or from the bridge API
NODES_PER_NODECARD = 32
# initialize a new partition dict with all partitions
#
partitions = PartitionDict()
tmp_list = []
# this is going to hold partition objects from the bridge (not our own Partition)
wiring_cache = {}
bp_cache = {}
for partition_def in system_def.getiterator("Partition"):
if not partition_def.get("name").startswith("ANL"):
continue
node_list = []
switch_list = []
for nc in partition_def.getiterator("NodeCard"):
node_list.append(_get_node_card(nc.get("id")))
nc_count = len(node_list)
# remove partitions which have less than 512 nodes
if (NODES_PER_NODECARD * nc_count) < 512:
continue
if not wiring_cache.has_key(nc_count):
wiring_cache[nc_count] = []
wiring_cache[nc_count].append(partition_def.get("name"))
for s in partition_def.getiterator("Switch"):
switch_list.append(s.get("id"))
tmp_list.append(
dict(
name=partition_def.get("name"),
queue=partition_def.get("queue", "default"),
size=NODES_PER_NODECARD * nc_count,
node_cards=node_list,
switches=switch_list,
state="idle",
))
partitions.q_add(tmp_list)
# find the wiring deps
for size in wiring_cache:
for p in wiring_cache[size]:
p = partitions[p]
s1 = sets.Set(p.switches)
for other in wiring_cache[size]:
other = partitions[other]
if (p.name == other.name):
continue
s2 = sets.Set(other.switches)
if s1.intersection(s2):
self.logger.info(
"found a wiring dep between %s and %s", p.name,
other.name)
partitions[p.name]._wiring_conflicts.add(other.name)
# update object state
self._partitions.clear()
self._partitions.update(partitions)
print "Total partitions: ", len(self._partitions)
def reserve_partition(self, name, size=None):
"""Reserve a partition and block all related partitions.
Arguments:
name -- name of the partition to reserve
size -- size of the process group reserving the partition (optional)
"""
try:
partition = self.partitions[name]
except KeyError:
self.logger.error("reserve_partition(%r, %r) [does not exist]" %
(name, size))
return False
if partition.state != "allocated":
self.logger.error("reserve_partition(%r, %r) [%s]" %
(name, size, partition.state))
return False
if not partition.functional:
self.logger.error("reserve_partition(%r, %r) [not functional]" %
(name, size))
if size is not None and size > partition.size:
self.logger.error("reserve_partition(%r, %r) [size mismatch]" %
(name, size))
return False
self._partitions_lock.acquire()
try:
partition.state = "busy"
partition.reserved_until = False
except:
self.logger.error("error in reserve_partition", exc_info=True)
self._partitions_lock.release()
# explicitly call this, since the above "busy" is instantaneously available
self.update_partition_state()
self.logger.info("reserve_partition(%r, %r)" % (name, size))
return True
reserve_partition = exposed(reserve_partition)
def release_partition(self, name):
"""Release a reserved partition.
Arguments:
name -- name of the partition to release
"""
try:
partition = self.partitions[name]
except KeyError:
self.logger.error("release_partition(%r) [already free]" % (name))
return False
if not partition.state == "busy":
self.logger.info("release_partition(%r) [not busy]" % (name))
return False
self._partitions_lock.acquire()
try:
partition.state = "idle"
except:
self.logger.error("error in release_partition", exc_info=True)
self._partitions_lock.release()
# explicitly unblock the blocked partitions
self.update_partition_state()
self.logger.info("release_partition(%r)" % (name))
return True
release_partition = exposed(release_partition)
def add_process_groups(self, specs):
"""Create a simulated process group.
Arguments:
spec -- dictionary hash specifying a process group to start
"""
self.logger.info("add_process_groups(%r)" % (specs))
script_specs = []
other_specs = []
for spec in specs:
if spec.get('mode') == "script":
script_specs.append(spec)
else:
other_specs.append(spec)
# start up script jobs
new_pgroups = []
if script_specs:
try:
for spec in script_specs:
script_pgroup = ComponentProxy("script-manager").add_jobs(
[spec])
new_pgroup = self.process_groups.q_add([spec])
new_pgroup[0].script_id = script_pgroup[0]['id']
self.reserve_resources_until(
spec['location'],
time.time() + 60 * float(spec['walltime']),
new_pgroup[0].jobid)
new_pgroups.append(new_pgroup[0])
except (ComponentLookupError, xmlrpclib.Fault):
raise ProcessGroupCreationError(
"system::add_process_groups failed to communicate with script-manager"
)
process_groups = self.process_groups.q_add(other_specs)
for process_group in process_groups:
self.start(process_group)
return new_pgroups + process_groups
add_process_groups = exposed(query(all_fields=True)(add_process_groups))
def get_process_groups(self, specs):
"""Query process_groups from the simulator."""
return self.process_groups.q_get(specs)
get_process_groups = exposed(query(get_process_groups))
def wait_process_groups(self, specs):
"""get process groups that have finished running."""
self.logger.info("wait_process_groups(%r)" % (specs))
process_groups = [
pg for pg in self.process_groups.q_get(specs)
if pg.exit_status is not None
]
for process_group in process_groups:
# jobs that were launched on behalf of the script manager shouldn't release the partition
if not process_group.true_mpi_args:
self.reserve_resources_until(process_group.location, None,
process_group.jobid)
del self.process_groups[process_group.id]
return process_groups
wait_process_groups = exposed(query(wait_process_groups))
def signal_process_groups(self, specs, signame="SIGINT"):
"""Simulate the signaling of a process_group."""
self.logger.info("signal_process_groups(%r, %r)" % (specs, signame))
process_groups = self.process_groups.q_get(specs)
for process_group in process_groups:
if process_group.mode == "script":
try:
pgroup = ComponentProxy("script-manager").signal_jobs(
[{
'id': process_group.script_id
}], "SIGTERM")
except (ComponentLookupError, xmlrpclib.Fault):
logger.error(
"Failed to communicate with script manager when killing job"
)
else:
process_group.signals.append(signame)
return process_groups
signal_process_groups = exposed(query(signal_process_groups))
def start(self, process_group):
thread.start_new_thread(self._mpirun, (process_group, ))
def _mpirun(self, process_group):
argv = process_group._get_argv()
try:
stdout = open(process_group.stdout or "/dev/null", "a")
except:
stdout = open("/dev/null", "a")
try:
stderr = open(process_group.stderr or "/dev/null", "a")
except:
stderr = open("/dev/null", "a")
try:
clfn = process_group.cobalt_log_file or "/dev/null"
cobalt_log_file = open(clfn, "a")
print >> cobalt_log_file, "%s\n" % " ".join(argv[1:])
cobalt_log_file.close()
except:
logger.error("Job %s/%s: unable to open cobaltlog file %s",
process_group.id,
process_group.user,
clfn,
exc_info=True)
try:
partition = argv[argv.index("-partition") + 1]
except ValueError:
print >> stderr, "ERROR: '-partition' is a required flag"
print >> stderr, "FE_MPI (Info) : Exit status: 1"
process_group.exit_status = 1
return
except IndexError:
print >> stderr, "ERROR: '-partition' requires a value"
print >> stderr, "FE_MPI (Info) : Exit status: 1"
process_group.exit_status = 1
return
try:
mode = argv[argv.index("-mode") + 1]
except ValueError:
print >> stderr, "ERROR: '-mode' is a required flag"
print >> stderr, "FE_MPI (Info) : Exit status: 1"
process_group.exit_status = 1
return
except IndexError:
print >> stderr, "ERROR: '-mode' requires a value"
print >> stderr, "FE_MPI (Info) : Exit status: 1"
process_group.exit_status = 1
return
try:
size = argv[argv.index("-np") + 1]
except ValueError:
print >> stderr, "ERROR: '-np' is a required flag"
print >> stderr, "FE_MPI (Info) : Exit status: 1"
process_group.exit_status = 1
return
except IndexError:
print >> stderr, "ERROR: '-np' requires a value"
print >> stderr, "FE_MPI (Info) : Exit status: 1"
process_group.exit_status = 1
return
try:
size = int(size)
except ValueError:
print >> stderr, "ERROR: '-np' got invalid value %r" % (size)
print >> stderr, "FE_MPI (Info) : Exit status: 1"
print >> stdout, "ENVIRONMENT"
print >> stdout, "-----------"
for key, value in process_group.env.iteritems():
print >> stdout, "%s=%s" % (key, value)
print >> stdout
print >> stderr, "FE_MPI (Info) : Initializing MPIRUN"
reserved = self.reserve_partition(partition, size)
if not reserved:
print >> stderr, "BE_MPI (ERROR): Failed to run process on partition"
print >> stderr, "BE_MPI (Info) : BE completed"
print >> stderr, "FE_MPI (ERROR): Failure list:"
print >> stderr, "FE_MPI (ERROR): - 1. ProcessGroup execution failed - unable to reserve partition", partition
print >> stderr, "FE_MPI (Info) : FE completed"
print >> stderr, "FE_MPI (Info) : Exit status: 1"
process_group.exit_status = 1
return
hardware_failure = False
for nc in self.partitions[partition].node_cards:
if nc.id in self.failed_components:
hardware_failure = True
break
for switch in self.partitions[partition].switches:
if switch in self.failed_components:
hardware_failure = True
break
if hardware_failure:
excuses = [
"incorrectly polarized packet accelerator",
"the Internet is full",
"side fumbling detected",
"unilateral phase detractors offline",
]
print >> stderr, "BE_MPI (ERROR): Booting aborted - partition is in DEALLOCATING ('D') state"
print >> stderr, "BE_MPI (ERROR): Partition has not reached the READY ('I') state"
print >> stderr, "BE_MPI (Info) : Checking for block error text:"
print >> stderr, "BE_MPI (ERROR): block error text '%s.'" % random.choice(
excuses)
print >> stderr, "BE_MPI (Info) : Starting cleanup sequence"
time.sleep(20)
self.release_partition(partition)
print >> stderr, "BE_MPI (Info) : Partition", partition, "switched to state FREE ('F')"
print >> stderr, "FE_MPI (ERROR): Failure list:"
print >> stderr, "FE_MPI (ERROR): - 1.", partition, "couldn't boot."
print >> stderr, "FE_MPI (Info) : FE completed"
print >> stderr, "FE_MPI (Info) : Exit status: 1"
process_group.exit_status = 1
return
print >> stderr, "FE_MPI (Info) : process group with id", process_group.id
print >> stderr, "FE_MPI (Info) : Waiting for process_group to terminate"
print >> stdout, "Running process_group: %s" % " ".join(argv)
start_time = time.time()
run_time = random.randint(self.MIN_RUN_TIME, self.MAX_RUN_TIME)
my_exit_status = 0
self.logger.info("process group %d running for about %f seconds",
process_group.id, run_time)
while time.time() < (start_time + run_time):
if "SIGKILL" in process_group.signals:
process_group.exit_status = 1
return
elif "SIGTERM" in process_group.signals:
print >> stderr, "FE_MPI (Info) : ProcessGroup got signal SIGTERM"
my_exit_status = 1
break
else:
time.sleep(1) # tumblers better than pumpers
print >> stderr, "FE_MPI (Info) : ProcessGroup", process_group.id, "switched to state TERMINATED ('T')"
print >> stderr, "FE_MPI (Info) : ProcessGroup sucessfully terminated"
print >> stderr, "BE_MPI (Info) : Releasing partition", partition
released = self.release_partition(partition)
if not released:
print >> stderr, "BE_MPI (ERROR): Partition", partition, "could not switch to state FREE ('F')"
print >> stderr, "BE_MPI (Info) : BE completed"
print >> stderr, "FE_MPI (Info) : FE completed"
print >> stderr, "FE_MPI (Info) : Exit status: 1"
process_group.exit_status = 1
return
print >> stderr, "BE_MPI (Info) : Partition", partition, "switched to state FREE ('F')"
print >> stderr, "BE_MPI (Info) : BE completed"
print >> stderr, "FE_MPI (Info) : FE completed"
print >> stderr, "FE_MPI (Info) : Exit status:", my_exit_status
process_group.exit_status = my_exit_status
def update_partition_state(self):
# first, set all of the nodecards to not busy
for nc in self.node_card_cache.values():
nc.used_by = ''
self._partitions_lock.acquire()
try:
for p in self._partitions.values():
p._update_node_cards()
now = time.time()
# since we don't have the bridge, a partition which isn't busy
# should be set to idle and then blocked states can be derived
for p in self._partitions.values():
if p.state != "busy":
p.state = "idle"
if p.reserved_until and now > p.reserved_until:
p.reserved_until = None
p.reserved_by = None
for p in self._partitions.values():
if p.state == "busy":
# when the partition becomes busy, if a script job isn't reserving it, then release the reservation
if not p.reserved_by:
p.reserved_until = False
else:
if p.reserved_until:
p.state = "allocated"
for part in p._parents:
if part.state == "idle":
part.state = "blocked (%s)" % (p.name, )
for part in p._children:
if part.state == "idle":
part.state = "blocked (%s)" % (p.name, )
for diag_part in self.pending_diags:
if p.name == diag_part.name or p.name in diag_part.parents or p.name in diag_part.children:
p.state = "blocked by pending diags"
for nc in p.node_cards:
if nc.used_by:
p.state = "blocked (%s)" % nc.used_by
break
for dep_name in p._wiring_conflicts:
if self._partitions[dep_name].state in [
"allocated", "busy"
]:
p.state = "blocked-wiring (%s)" % dep_name
break
for part_name in self.failed_diags:
part = self._partitions[part_name]
if p.name == part.name:
p.state = "failed diags"
elif p.name in part.parents or p.name in part.children:
p.state = "blocked by failed diags"
except:
self.logger.error("error in update_partition_state", exc_info=True)
self._partitions_lock.release()
update_partition_state = automatic(update_partition_state)
def add_failed_components(self, component_names):
success = []
for name in component_names:
if self.node_card_cache.has_key(name):
self.failed_components.add(name)
success.append(name)
else:
for p in self._partitions.values():
if name in p.switches:
self.failed_components.add(name)
success.append(name)
break
return success
add_failed_component = exposed(add_failed_components)
def del_failed_components(self, component_names):
success = []
for name in component_names:
try:
self.failed_components.remove(name)
success.append(name)
except KeyError:
pass
return success
del_failed_components = exposed(del_failed_components)
def list_failed_components(self, component_names):
return list(self.failed_components)
list_failed_components = exposed(list_failed_components)
def launch_diags(self, partition, test_name):
exit_value = 0
for nc in partition.node_cards:
if nc.id in self.failed_components:
exit_value = 1
for switch in partition.switches:
if switch in self.failed_components:
exit_value = 2
self.finish_diags(partition, test_name, exit_value)
class OrcmBaseSystem(Component):
"""base system class.
Methods:
add_partitions -- tell the system to manage partitions (exposed, query)
get_partitions -- retrieve partitions in the simulator (exposed, query)
del_partitions -- tell the system not to manage partitions (exposed, query)
set_partitions -- change random attributes of partitions (exposed, query)
update_relatives -- should be called when partitions are added and removed from the managed list
"""
def __init__(self, *args, **kwargs):
orcm.orcmapi_init()
Component.__init__(self, *args, **kwargs)
self.process_groups = ProcessGroupDict()
self.all_nodes = set()
self.running_nodes = set()
self.down_nodes = set()
self.queue_assignments = {}
self.node_order = {}
self.configure()
self.queue_assignments["default"] = set(self.all_nodes)
self.alloc_only_nodes = {} # nodename:starttime
self.cleaning_processes = []
#keep track of which jobs still have hosts being cleaned
self.cleaning_host_count = {} # jobid:count
self.locations_by_jobid = {} #jobid:[locations]
self.jobid_to_user = {} #jobid:username
self.alloc_timeout = int(
get_orcm_system_config("allocation_timeout", 300))
self.logger.info("allocation timeout set to %d seconds." %
self.alloc_timeout)
def __del__(self):
orcm.orcmapi_finalize()
def __getstate__(self):
state = {}
state.update(Component.__getstate__(self))
state.update({
"orcm_base_version": 1,
"queue_assignments": self.queue_assignments,
"down_nodes": self.down_nodes
})
return state
def __setstate__(self, state):
Component.__setstate__(self, state)
self.all_nodes = set()
self.node_order = {}
self.configure()
self.queue_assignments = state.get('queue_assignments', {})
nonexistent_queues = []
#make sure we can't try and schedule nodes that don't exist
if self.queue_assignments == {}:
self.queue_assignments["default"] = set(self.all_nodes)
else:
#remove nodes that have disappeared
for queue, nodes in self.queue_assignments.iteritems():
corrected_nodes = self.all_nodes & set(nodes)
if corrected_nodes == set():
nonexistent_queues.append(queue)
self.queue_assignments[queue] = corrected_nodes
for queue in nonexistent_queues:
del self.queue_assignments[queue]
self.down_nodes = self.all_nodes & set(state.get('down_nodes', set()))
self.process_groups = ProcessGroupDict()
self.running_nodes = set()
self.alloc_only_nodes = {} # nodename:starttime
if not state.has_key("cleaning_processes"):
self.cleaning_processes = []
self.cleaning_host_count = {} # jobid:count
self.locations_by_jobid = {} #jobid:[locations]
self.jobid_to_user = {} #jobid:username
self.alloc_timeout = int(
get_orcm_system_config("allocation_timeout", 300))
self.logger.info("allocation timeout set to %d seconds." %
self.alloc_timeout)
def save_me(self):
'''Automatically write statefiles.'''
Component.save(self)
save_me = automatic(save_me)
def validate_job(self, spec):
"""validate a job for submission
Arguments:
spec -- job specification dictionary
"""
# spec has {nodes, walltime*, procs, mode, kernel}
max_nodes = len(self.all_nodes)
sys_type = 'orcm'
job_types = ['co', 'vn', 'smp', 'dual', 'script']
spec['mode'] = 'script'
try:
spec['nodecount'] = int(spec['nodecount'])
except:
raise JobValidationError("Non-integer node count")
if not 0 < spec['nodecount'] <= max_nodes:
raise JobValidationError("Node count out of realistic range")
if float(spec['time']) < 5 and float(spec['time']) > 0:
raise JobValidationError("Walltime less than minimum")
if spec['mode'] not in job_types:
raise JobValidationError("%s is an invalid mode" % spec['mode'])
if not spec['proccount']:
spec['proccount'] = spec['nodecount']
else:
try:
spec['proccount'] = int(spec['proccount'])
except:
JobValidationError("non-integer proccount")
if spec['proccount'] < 1:
raise JobValidationError("negative proccount")
if spec['proccount'] > spec['nodecount']:
if spec['mode'] not in ['vn', 'dual']:
raise JobValidationError("proccount too large")
# need to handle kernel
return spec
validate_job = exposed(validate_job)
def fail_partitions(self, specs):
self.logger.error("Fail_partitions not used on orcm systems.")
return ""
fail_partitions = exposed(fail_partitions)
def unfail_partitions(self, specs):
self.logger.error("unfail_partitions not used on orcm systems.")
return ""
unfail_partitions = exposed(unfail_partitions)
def _find_job_location(self, args):
'''Get a list of nodes capable of running a job.
'''
nodes = args['nodes']
jobid = args['jobid']
available_nodes = self._get_available_nodes(args)
if nodes <= len(available_nodes):
return {jobid: [available_nodes.pop() for i in range(nodes)]}
else:
return None
def _get_available_nodes(self, args):
'''Get all nodes required for a job, ignoring forbidden ones (i.e. reserved nodes).
'''
queue = args['queue']
forbidden = args.get("forbidden", [])
required = args.get("required", [])
if required:
available_nodes = set(required)
else:
available_nodes = self.queue_assignments[queue].difference(
forbidden)
available_nodes = available_nodes.difference(self.running_nodes)
available_nodes = available_nodes.difference(self.down_nodes)
return available_nodes
def _backfill_cmp(self, left, right):
return cmp(left[1], right[1])
# the argument "required" is used to pass in the set of locations allowed by a reservation;
def find_job_location(self, arg_list, end_times):
'''Find the best location for a job and start the job allocation process
'''
best_location_dict = {}
winner = arg_list[0]
jobid = None
user = None
# first time through, try for starting jobs based on utility scores
for args in arg_list:
location_data = self._find_job_location(args)
if location_data:
best_location_dict.update(location_data)
jobid = int(args['jobid'])
user = args['user']
break
# the next time through, try to backfill, but only if we couldn't find anything to start
if not best_location_dict:
job_end_times = {}
total = 0
for item in sorted(end_times, cmp=self._backfill_cmp):
total += len(item[0])
job_end_times[total] = item[1]
needed = winner['nodes'] - len(self._get_available_nodes(winner))
now = time.time()
backfill_cutoff = 0
for num in sorted(job_end_times):
if needed <= num:
backfill_cutoff = job_end_times[num] - now
for args in arg_list:
if 60 * float(args['walltime']) > backfill_cutoff:
continue
location_data = self._find_job_location(args)
if location_data:
best_location_dict.update(location_data)
self.logger.info("backfilling job %s" % args['jobid'])
jobid = int(args['jobid'])
user = args['user']
break
# reserve the stuff in the best_partition_dict, as those partitions are allegedly going to
# be running jobs very soon
for jobid_str, location_list in best_location_dict.iteritems():
self.running_nodes.update(location_list)
self.logger.info("Job %s: Allocating nodes: %s" %
(int(jobid_str), location_list))
#just in case we're not going to be running a job soon, and have to
#return this to the pool:
self.jobid_to_user[jobid] = user
alloc_time = time.time()
for location in location_list:
self.alloc_only_nodes[location] = alloc_time
self.locations_by_jobid[jobid] = location_list
return best_location_dict
find_job_location = exposed(find_job_location)
def check_alloc_only_nodes(self):
'''Check to see if nodes that we have allocated but not run yet should be freed.
'''
jobids = []
check_time = time.time()
dead_locations = []
for location, start_time in self.alloc_only_nodes.iteritems():
if int(check_time) - int(start_time) > self.alloc_timeout:
self.logger.warning(
"Location: %s: released. Time between allocation and run exceeded.",
location)
dead_locations.append(location)
if dead_locations == []:
#well we don't have anything dying this time.
return
for jobid, locations in self.locations_by_jobid.iteritems():
clear_from_dead_locations = False
for location in locations:
if location in dead_locations:
clear_from_dead_locations = True
if jobid not in jobids:
jobids.append(jobid)
#bagging the jobid will cause all locs assoc with job to be
#cleaned so clear them out to make this faster
if clear_from_dead_locations:
for location in locations:
if location in dead_locations:
dead_locations.remove(location)
if dead_locations == []:
#well we don't have anything dying this time.
break
self.invoke_node_cleanup(jobids)
return
check_alloc_only_nodes = automatic(
check_alloc_only_nodes,
get_orcm_system_config("automatic_method_interval", 10.0))
def invoke_node_cleanup(self, jobids):
'''Invoke cleanup for nodes that have exceeded their allocated time
'''
found_locations = set()
for jobid in jobids:
user = self.jobid_to_user[jobid]
locations = self.locations_by_jobid[jobid]
locations_to_clean = set()
for location in locations:
if location not in found_locations:
try:
del self.alloc_only_nodes[location]
except KeyError:
self.logger.warning(
'WANING: Location: %s Jobid: %s; Location already removed from alloc_only_nodes',
location, jobid)
else:
locations_to_clean.add(location)
found_locations.add(location)
# self.clean_nodes(list(locations_to_clean), user, jobid)
def _walltimecmp(self, dict1, dict2):
return -cmp(float(dict1['walltime']), float(dict2['walltime']))
def find_queue_equivalence_classes(self,
reservation_dict,
active_queue_names,
passthrough_partitions=[]):
'''Take a dictionary of reservation information and a list of active
queues return a list of dictionaries containing queues, partition
associations and reservation data.
Input:
reservation_dict: A dict of reservations and associated partitions
active_queue_names: A list of queues that you can schedule jobs from
passthrough_partitions: not used in this implementation
Output:
A dictionary of queues and associated reservations that have resources
in common with each other
'''
equiv = []
for q in self.queue_assignments:
# skip queues that aren't "running"
if not q in active_queue_names:
continue
found_a_match = False
for e in equiv:
if e['data'].intersection(self.queue_assignments[q]):
e['queues'].add(q)
e['data'].update(self.queue_assignments[q])
found_a_match = True
break
if not found_a_match:
equiv.append({
'queues': set([q]),
'data': set(self.queue_assignments[q]),
'reservations': set()
})
real_equiv = []
for eq_class in equiv:
found_a_match = False
for e in real_equiv:
if e['queues'].intersection(eq_class['queues']):
e['queues'].update(eq_class['queues'])
e['data'].update(eq_class['data'])
found_a_match = True
break
if not found_a_match:
real_equiv.append(eq_class)
equiv = real_equiv
for eq_class in equiv:
for res_name in reservation_dict:
skip = True
for host_name in reservation_dict[res_name].split(":"):
if host_name in eq_class['data']:
eq_class['reservations'].add(res_name)
for key in eq_class:
eq_class[key] = list(eq_class[key])
del eq_class['data']
return equiv
find_queue_equivalence_classes = exposed(find_queue_equivalence_classes)
def reserve_resources_until(self, location, time, jobid):
'''hold onto resources until a timeout has passed, and then clear the
nodes for another job.
'''
#WARNING: THIS IS VERY DIFFERENT FROM BLUE GENES!
#THIS WILL FORCIBLY CLEAR THE NODE!
if time is None:
for host in location:
self.running_nodes.discard(host)
self.logger.info("hasty job kill: freeing %s" % host)
else:
self.logger.error("failed to reserve location '%r' until '%s'" %
(location, time))
return True #So we can progress.
reserve_resources_until = exposed(reserve_resources_until)
def nodes_up(self, node_list, user_name=None):
changed = []
for n in node_list:
if n in self.down_nodes:
self.down_nodes.remove(n)
changed.append(n)
if n in self.running_nodes:
self.running_nodes.remove(n)
changed.append(n)
if changed:
self.logger.info("%s marking nodes up: %s", user_name,
", ".join(changed))
return changed
nodes_up = exposed(nodes_up)
def nodes_down(self, node_list, user_name=None):
changed = []
for n in node_list:
if n in self.all_nodes:
self.down_nodes.add(n)
changed.append(n)
if changed:
self.logger.info("%s marking nodes down: %s", user_name,
", ".join(changed))
return changed
nodes_down = exposed(nodes_down)
def get_node_status(self):
def my_cmp(left, right):
return cmp(left[2], right[2])
self.configure()
status_list = []
for n in self.all_nodes:
if n in self.running_nodes:
status = "allocated"
elif n in self.down_nodes:
status = "down"
else:
status = "idle"
status_list.append((n, status, self.node_order[n]))
status_list.sort(my_cmp)
return status_list
get_node_status = exposed(get_node_status)
def get_queue_assignments(self):
ret = {}
for q in self.queue_assignments:
ret[q] = list(self.queue_assignments[q])
return ret
get_queue_assignments = exposed(get_queue_assignments)
def set_queue_assignments(self, queue_names, node_list, user_name=None):
checked_nodes = set()
for n in node_list:
if n in self.all_nodes:
checked_nodes.add(n)
queue_list = queue_names.split(":")
for q in queue_list:
if q not in self.queue_assignments:
self.queue_assignments[q] = set()
for q in self.queue_assignments.keys():
if q not in queue_list:
self.queue_assignments[q].difference_update(checked_nodes)
if len(self.queue_assignments[q]) == 0:
del self.queue_assignments[q]
else:
self.queue_assignments[q].update(checked_nodes)
self.logger.info("%s assigning queues %s to nodes %s", user_name,
queue_names, " ".join(checked_nodes))
return list(checked_nodes)
set_queue_assignments = exposed(set_queue_assignments)
def verify_locations(self, location_list):
"""Providing a system agnostic interface for making sure a 'location string' is valid"""
ret = []
for l in location_list:
if l in self.all_nodes:
ret.append(l)
return ret
verify_locations = exposed(verify_locations)
def configure(self):
'''Add nodes from ORCM to Cobalt's configuration of tracked nodes.
'''
nodelist = PP_node_t()
node_count = c_int(0)
counter = 0
orcm.orcmapi_get_nodes(byref(nodelist), byref(node_count))
self.down_nodes.clear()
for i in range(node_count.value):
name = nodelist[i].contents.name
state = nodelist[i].contents.state
self.all_nodes.add(name)
self.node_order[name] = counter
if (state == ORCM_NODE_STATE_UNKNOWN) or (state
== ORCM_NODE_STATE_DOWN):
self.down_nodes.add(name)
counter += 1
# this gets called by bgsched in order to figure out if there are partition overlaps;
# it was written to provide the data that bgsched asks for and raises an exception
# if you try to ask for more
def get_partitions(self, specs):
'''Fetch node information and their respective states.
'''
partitions = []
for spec in specs:
item = {}
for node in self.all_nodes:
if "name" in spec:
if spec["name"] == '*':
item.update({"name": node})
elif spec["name"] == node:
item.update({"name": node})
if "name" in spec:
spec.pop("name")
if "children" in spec:
item.update({"children": []})
spec.pop("children")
if "parents" in spec:
item.update({"parents": []})
spec.pop("parents")
if spec:
raise NotSupportedError(
"orcm clusters lack information on: %s" %
", ".join(spec.keys()))
if item:
partitions.append(item)
return partitions
get_partitions = exposed(get_partitions)
def launch_script(self, config_option, host, jobid, user, group_name):
'''Start our script processes used for node prep and cleanup.
'''
#TODO: ORCM_launch
def launch_session(self, jobid, nodes, nodelist, user):
o_user = c_char_p(user)
o_jobid = c_int(jobid)
o_nodes = c_int(nodes)
o_nodelist = c_char_p(nodelist)
retval = orcm.orcmapi_launch_session(o_jobid, o_nodes, o_nodelist,
o_user)
return retval
launch_session = exposed(launch_session)
def cancel_session(self, jobid):
o_jobid = c_int(jobid)
retval = orcm.orcmapi_cancel_session(o_jobid)
return retval
cancel_session = exposed(cancel_session)
def del_process_groups(self, jobid):
'''Set actions to take when deleting process groups. This must be
overridden in the implementation.
'''
raise NotImplementedError("Must be overridden in child class")
class ClusterSystem(ClusterBaseSystem):
"""cluster system component.
Methods:
configure -- load partitions from the bridge API
add_process_groups -- add (start) an mpirun process on the system (exposed, ~query)
get_process_groups -- retrieve mpirun processes (exposed, query)
wait_process_groups -- get process groups that have exited, and remove them from the system (exposed, query)
signal_process_groups -- send a signal to the head process of the specified process groups (exposed, query)
update_partition_state -- update partition state from the bridge API (runs as a thread)
"""
name = "system"
implementation = "cluster_system"
logger = logger
def __init__(self, *args, **kwargs):
ClusterBaseSystem.__init__(self, *args, **kwargs)
self.process_groups.item_cls = ClusterProcessGroup
def __setstate__(self, state):
ClusterBaseSystem.__setstate__(self, state)
self.process_groups.item_cls = ClusterProcessGroup
def add_process_groups(self, specs):
"""Create a process group.
Arguments:
spec -- dictionary hash specifying a process group to start
"""
self.logger.info("add_process_groups(%r)", specs)
process_groups = self.process_groups.q_add(specs)
for pgroup in process_groups:
self.logger.info(
"Job %s/%s: process group %s created to track script",
pgroup.user, pgroup.jobid, pgroup.id)
#System has started the job. We need remove them from the temp, alloc array
#in cluster_base_system.
for pg in process_groups:
for location in pg.location:
del self.alloc_only_nodes[location]
return process_groups
add_process_groups = exposed(query(add_process_groups))
def get_process_groups(self, specs):
self._get_exit_status()
return self.process_groups.q_get(specs)
get_process_groups = exposed(query(get_process_groups))
def _get_exit_status(self):
try:
running = ComponentProxy("forker").active_list("process group")
except:
self.logger.error(
"failed to contact forker component for list of running jobs")
return
for each in self.process_groups.itervalues():
if each.head_pid not in running and each.exit_status is None:
# FIXME: i bet we should consider a retry thing here -- if we fail enough times, just
# assume the process is dead? or maybe just say there's no exit code the first time it happens?
# maybe the second choice is better
try:
dead_dict = ComponentProxy("forker").get_status(
each.head_pid)
except Queue.Empty:
self.logger.error(
"failed call for get_status from forker component for pg %s",
each.head_pid)
return
if dead_dict is None:
self.logger.info(
"Job %s/%s: process group %i: exited with unknown status",
each.user, each.jobid, each.id)
each.exit_status = 1234567
else:
each.exit_status = dead_dict["exit_status"]
if dead_dict["signum"] == 0:
self.logger.info(
"process group %i: job %s/%s exited with status %i",
each.id, each.jobid, each.user, each.exit_status)
else:
if dead_dict["core_dump"]:
core_dump_str = ", core dumped"
else:
core_dump_str = ""
self.logger.info(
"process group %i: job %s/%s terminated with signal %s%s",
each.id, each.jobid, each.user,
dead_dict["signum"], core_dump_str)
_get_exit_status = automatic(_get_exit_status)
def wait_process_groups(self, specs):
self._get_exit_status()
process_groups = [
pg for pg in self.process_groups.q_get(specs)
if pg.exit_status is not None
]
for process_group in process_groups:
self.clean_nodes(
pg.location, pg.user, pg.jobid
) #FIXME: This call is a good place to look for problems
return process_groups
wait_process_groups = locking(exposed(query(wait_process_groups)))
def signal_process_groups(self, specs, signame="SIGINT"):
my_process_groups = self.process_groups.q_get(specs)
for pg in my_process_groups:
if pg.exit_status is None:
try:
ComponentProxy("forker").signal(pg.head_pid, signame)
except:
self.logger.error(
"Failed to communicate with forker when signalling job"
)
return my_process_groups
signal_process_groups = exposed(query(signal_process_groups))
def del_process_groups(self, jobid):
'''delete a process group and don't track it anymore.
jobid -- jobid associated with the process group we are removing
'''
del_items = self.process_groups.q_del([{'jobid': jobid}])
if del_items == []:
self.logger.warning(
"Job %s: Process group not found for this jobid.", jobid)
else:
self.logger.info("Job %s: Process group deleted.", jobid)
else:
each.exit_status = 128 + signum
if core_dump:
core_dump_str = ", core dumped"
else:
core_dump_str = ""
self.logger.info("process group %i: job %s/%s terminated with signal %s%s",
each.id, each.jobid, each.user, signum, core_dump_str)
if pid in self.diag_pids:
part, test = self.diag_pids[pid]
del self.diag_pids[pid]
self.logger.info("Diagnostic %s on %s finished. rc=%d" % \
(test, part.name, status))
self.finish_diags(part, test, status)
"""
_get_exit_status = automatic(_get_exit_status)
def wait_process_groups (self, specs):
self._get_exit_status()
process_groups = [pg for pg in self.process_groups.q_get(specs) if pg.exit_status is not None]
for process_group in process_groups:
if not process_group.true_mpi_args:
self._mark_partition_for_cleaning(process_group.location[0], process_group.jobid)
del self.process_groups[process_group.id]
return process_groups
wait_process_groups = exposed(query(wait_process_groups))
def signal_process_groups (self, specs, signame="SIGINT"):
my_process_groups = self.process_groups.q_get(specs)
for pg in my_process_groups:
if pg.exit_status is None:
# this is how waitpid + WNOHANG reports things are running
# but not yet dead
if pid == 0:
break
signum = 0
core_dump = False
exit_status = None
if os.WIFEXITED(status):
exit_status = os.WEXITSTATUS(status)
elif os.WIFSIGNALED(status):
signum = os.WTERMSIG(status)
if os.WCOREDUMP(status):
core_dump = True
exit_status = 128 + signum
if exit_status is None:
self.logger.info("pid %s died but had no status", pid)
break
if signum:
self.logger.info("pid %s died with status %s and signal %s", pid, status, signum)
else:
self.logger.info("pid %s died with status %s", pid, status)
for each in self.children.itervalues():
if each.pid == pid:
self.logger.info("task %s: dead pid %s matches", each.label, pid)
each.exit_status = exit_status
each.core_dump = core_dump
each.signum = signum
wait = automatic(wait)
class OrcmSystem (OrcmBaseSystem):
"""ORCM system component.
Methods:
add_process_groups -- add (start) an mpirun process on the system (exposed, ~query)
get_process_groups -- retrieve mpirun processes (exposed, query)
wait_process_groups -- get process groups that have exited, and remove them from the system (exposed, query)
signal_process_groups -- send a signal to the head process of the specified process groups (exposed, query)
update_partition_state -- update partition state from the bridge API (runs as a thread)
"""
name = "system"
implementation = "orcm_system"
logger = logger
def __init__ (self, *args, **kwargs):
OrcmBaseSystem.__init__(self, *args, **kwargs)
self.process_groups.item_cls = OrcmProcessGroup
def __del__ (self):
OrcmBaseSystem.__del__(self)
def __getstate__(self):
state = {}
state.update(OrcmBaseSystem.__getstate__(self))
# state.update({
# "orcm_system_version": 1 })
return state
def __setstate__(self, state):
OrcmBaseSystem.__setstate__(self, state)
self.process_groups.item_cls = OrcmProcessGroup
def add_process_groups (self, specs):
"""Create a process group.
Arguments:
spec -- dictionary hash specifying a process group to start
"""
self.logger.info("add_process_groups(%r)", specs)
process_groups = self.process_groups.q_add(specs)
for pgroup in process_groups:
self.logger.info("Job %s/%s: process group %s created to track script", pgroup.user, pgroup.jobid, pgroup.id)
#System has started the job. We need remove them from the temp, alloc array
#in orcm_base_system.
self.apg_started = True
for pgroup in process_groups:
for location in pgroup.location:
try:
del self.alloc_only_nodes[location]
except KeyError:
logger.critical("%s already removed from alloc_only_nodes list", location)
return process_groups
add_process_groups = exposed(query(add_process_groups))
def get_process_groups (self, specs):
self._get_exit_status()
return self.process_groups.q_get(specs)
get_process_groups = exposed(query(get_process_groups))
def _get_exit_status (self):
children = {}
cleanup = {}
_get_exit_status = automatic(_get_exit_status,
float(get_orcm_system_config('get_exit_status_interval', 10)))
def wait_process_groups (self, specs):
process_groups = self.process_groups.q_get(specs)
return process_groups
wait_process_groups = locking(exposed(query(wait_process_groups)))
def signal_process_groups (self, specs, signame="SIGINT"):
my_process_groups = self.process_groups.q_get(specs)
for pg in my_process_groups:
OrcmBaseSystem.cancel_session(self, pg.jobid)
pg.exit_status = 0
for host in pg.location:
self.running_nodes.discard(host)
return my_process_groups
signal_process_groups = exposed(query(signal_process_groups))
def del_process_groups(self, jobid):
'''delete a process group and don't track it anymore.
jobid -- jobid associated with the process group we are removing
'''
del_items = self.process_groups.q_del([{'jobid':jobid}])
if del_items == []:
self.logger.warning("Job %s: Process group not found for this jobid.", jobid)
else:
self.logger.info("Job %s: Process group deleted.", jobid)
return
# has already been waited upon
for forker, child_id in children.keys():
if children[(forker, child_id)]['pg'] is None:
cleanup[forker].append(child['id'])
# cleanup any children that have completed and been processed
for forker in cleanup.keys():
if len(cleanup[forker]) > 0:
try:
ComponentProxy(forker).cleanup_children(cleanup[forker])
except ComponentLookupError:
self.logger.error("failed to contact the %s component to cleanup children", forker)
except:
self.logger.error("unexpected exception while requesting that the %s component perform cleanup",
forker, exc_info=True)
_get_exit_status = automatic(_get_exit_status,
float(get_cluster_system_config('get_exit_status_interval', 10)))
def wait_process_groups (self, specs):
self._get_exit_status()
process_groups = [pg for pg in self.process_groups.q_get(specs) if pg.exit_status is not None]
for process_group in process_groups:
self.clean_nodes(process_group.location, process_group.user, process_group.jobid)
return process_groups
wait_process_groups = locking(exposed(query(wait_process_groups)))
def signal_process_groups (self, specs, signame="SIGINT"):
my_process_groups = self.process_groups.q_get(specs)
for pg in my_process_groups:
if pg.exit_status is None:
try:
ComponentProxy(pg.forker).signal(pg.head_pid, signame)
class BBSimulator(BBSystem):
"""Simulator for Breadboard system component
Methods (whether inherited, overridden, or new):
add_process_groups -- inherited
get_process_groups -- inherited
signal_process_groups -- inherited
wait_process_groups -- inherited
_start_pg -- OVERRIDDEN
_check_builds_done -- OVERRIDDEN
_sim_builds_done -- NEW
_sim_start -- NEW
_sim_runjob -- NEW
node_done_building -- inherited
_wait -- inherited
_release_resources -- OVERRIDDEN
add_resources -- inherited
remove_resources -- inherited
get_resources -- inherited
set_attributes -- inherited
remove_attributes -- inherited
validate_job -- inherited
verify_locations -- inherited
find_job_location -- inherited
find_queue_equivalence_classes -- inherited
"""
name = "system"
implementation = "breadboard simulator"
def __init__(self, *args, **kwargs):
BBSystem.__init__(self, *args, **kwargs)
self.process_groups.item_cls = BBSimProcessGroup
def _start_pg(self, pgp):
"""Modified _start_pg for simulator"""
specs = [{"name": name, "attributes": "*"} for name in pgp.location]
resources = self.get_resources(specs)
action = "build-%s" % pgp.kernel
for res in resources:
# Set build action for each resource
specs = [{"name": res.name}]
new_attrs = {"attributes": {"action": action}}
self.set_attributes(specs, new_attrs)
# REMOVED linking/unlinking PXE stuff
for res in resources:
# REMOVED "pm -c" call
pgp.building_nodes.append(res.name)
def _check_builds_done(self):
"""Modified _check_builds_done for simulator"""
for pgp in self.process_groups.itervalues():
if len(pgp.building_nodes) > 0 or len(pgp.pinging_nodes) > 0:
specs = [{
"name": name,
"attributes": "*"
} for name in pgp.building_nodes]
building = self.get_resources(specs)
build_action = "build-%s" % pgp.kernel
for node in building:
if node.attributes["action"] != build_action:
pgp.building_nodes.remove(node.name)
pgp.pinging_nodes.append(node.name)
for nodename in pgp.pinging_nodes:
# REMOVED actual call to ping
# Simulate ping success with 70-30 chance
if random.randint(0, 9) >= 3:
pgp.pinging_nodes.remove(nodename)
if len(pgp.building_nodes) == 0 and len(
pgp.pinging_nodes) == 0:
# CALLING new system '_sim_start()' method instead of
# PG start() method
self._sim_start(pgp)
_check_builds_done = automatic(_check_builds_done)
def _sim_builds_done(self):
"""Used to simulate a node finishing building"""
for pgp in self.process_groups.itervalues():
if len(pgp.building_nodes) > 0:
if random.randint(0, 9) >= 3:
for name in pgp.location:
self.node_done_building(name)
_sim_builds_done = automatic(_sim_builds_done)
def _sim_start(self, pgp):
"""Starts a thread to simulate running a process group"""
thread.start_new_thread(self._sim_runjob, (pgp, ))
def _sim_runjob(self, pgp):
"""Simulates running a process group"""
argv = pgp.get_argv()
stdout = open(pgp.stdout or "/dev/null", "a")
stderr = open(pgp.stderr or "/dev/null", "a")
try:
cobalt_log_file = open(pgp.cobalt_log_file or "/dev/null", "a")
print >> cobalt_log_file, "%s\n" % " ".join(argv[1:])
cobalt_log_file.close()
except IOError:
logger.error("Job %s/%s: unable to open cobalt log file %s" %
(pgp.id, pgp.user, pgp.cobalt_log_file))
print >> stdout, "Running process_group: %s" % " ".join(argv)
start_time = time.time()
run_time = random.randint(60, 180)
my_exit_status = 0
print "Running for about %f seconds" % run_time
while time.time() < (start_time + run_time):
if "SIGKILL" in pgp.signals:
pgp.exit_status = 1
os.remove(pgp.nodefile[1])
return
elif "SIGTERM" in pgp.signals:
print >> stderr, "ProcessGroup got signal SIGTERM"
my_exit_status = 1
break
else:
Cobalt.Util.sleep(1)
print >> stderr, "ProcessGroup %s switched to state TERMINATED" % pgp.id
print >> stderr, "Exit Status:", my_exit_status
pgp.exit_status = my_exit_status
os.remove(pgp.nodefile[1])
def _release_resources(self, pgp):
"""Modified _release_resources for simulator"""
# REMOVED call to "pm -0"
specs = [{"name": name} for name in pgp.location]
new_attrs = {"state": "idle"}
self.set_attributes(specs, new_attrs)
each.exit_status = 128 + signum
if core_dump:
core_dump_str = ", core dumped"
else:
core_dump_str = ""
self.logger.info("process group %i: job %s/%s terminated with signal %s%s",
each.id, each.jobid, each.user, signum, core_dump_str)
if pid in self.diag_pids:
part, test = self.diag_pids[pid]
del self.diag_pids[pid]
self.logger.info("Diagnostic %s on %s finished. rc=%d" % \
(test, part.name, status))
self.finish_diags(part, test, status)
"""
_get_exit_status = automatic(_get_exit_status)
def wait_process_groups(self, specs):
self._get_exit_status()
process_groups = [
pg for pg in self.process_groups.q_get(specs)
if pg.exit_status is not None
]
for process_group in process_groups:
if not process_group.true_mpi_args:
self._mark_partition_for_cleaning(process_group.location[0],
process_group.jobid)
del self.process_groups[process_group.id]
return process_groups
wait_process_groups = exposed(query(wait_process_groups))
class HistoryManager(Component):
'''Historical Data Manager'''
implementation = 'histm'
name = 'history-manager'
def __init__(self, *args, **kwargs):
Component.__init__(self, *args, **kwargs)
self.least_item = int(get_histm_config('least_item', 10)) # tunable
self.lastDays = int(get_histm_config("last_days", 60)) # tunable
self.jobinfo_file = get_histm_config("jobinfo_file", "jobinfo.hist")
self.jobinfo_script = get_histm_config("jobinfo_script", "jobinfo.py")
self.fraction = float(get_histm_config("fraction", 0.8))
self.minimum_ap = float(get_histm_config("minimum_ap", 0.5))
self.job_dict = {} #historical job dictionary
self.project_set = set([]) #distinct project names of historical jobs
self.user_set = set([]) #distinct user names of historical jobs
self.pair_set = set([]) #distinct (user, project) pair
self.Ap_dict_proj = {} #dictionary of walltime adjusting parameters by project name
self.Ap_dict_user = {} #dictionary of walltime adjusting parameters by user name
self.Ap_dict_paired = {} #dictionary of walltime adjusting parameters by double key (user, project)
self.update_Ap_Dict()
def update_job_dict(self):
'''initialize/update job_dict from jobinfo_file'''
try:
input_file = open(self.jobinfo_file, "r")
except IOError:
logger.error("History manager: unable to open jobinfo file %s", self.jobinfo_file)
return
for line in input_file:
line = line.strip('\n')
jobspec = parse_jobinfo(line)
jobid = jobspec.get('jobid')
if not self.job_dict.has_key(jobid):
self.job_dict[jobid] = {}
self.job_dict[jobid] = jobspec
self.project_set.add(jobspec.get('project'))
self.user_set.add(jobspec.get('user'))
key_pair = (jobspec.get('user'), jobspec.get('project'))
self.pair_set.add(key_pair)
input_file.close()
def update_Ap_Dict(self):
'''Update dictionary Adjust Parameter (Ap), including project based Dict and user based Dict'''
self.update_job_dict()
for projectname in self.project_set:
if not self.Ap_dict_proj.has_key(projectname):
ap = self.calculate_Ap('project', projectname)
self.Ap_dict_proj[projectname] = ap
for username in self.user_set:
if not self.Ap_dict_proj.has_key(username):
ap = self.calculate_Ap('user', username)
self.Ap_dict_user[username] = ap
for keypair in self.pair_set:
if not self.Ap_dict_paired.has_key(keypair):
ap = self.calculate_Ap_paired(keypair)
keystr = "%s:%s" % (keypair[0], keypair[1])
self.Ap_dict_paired[keystr] = ap
print "***********Adjusting Parameter Dict Updated***********"
update_Ap_Dict = automatic(update_Ap_Dict, update_interval*3600)
def calculate_Ap(self, keyname, valname):
'''get Adjust Parameter from dict, keyname: either 'project' or 'user', valname: value of the key'''
Rlist = [] #list of R values
for id in self.job_dict.keys():
if self.job_dict[id][keyname] == valname:
Rlist.append(float(self.job_dict[id]['Rvalue']))
if len(Rlist) > self.least_item:
Rlist.sort()
pos = int(self.fraction * len(Rlist))
Ap = Rlist[pos]
else:
Ap = 1
if Ap > 1:
Ap = 1
return Ap
def calculate_Ap_paired(self, keypair):
username = keypair[0]
projectname = keypair[1]
Rlist = []
for id in self.job_dict.keys():
if self.job_dict[id]['user'] == username and self.job_dict[id]['project'] == projectname:
Rlist.append(float(self.job_dict[id]['Rvalue']))
if len(Rlist) > self.least_item:
Rlist.sort()
pos = int(self.fraction * len(Rlist))
Ap = Rlist[pos]
else:
Ap = 1
if Ap < self.minimum_ap:
Ap = self.minimum_ap
if Ap > 1:
Ap = 1
return Ap
def get_Ap(self, key, val):
Ap = 1
if key == 'user':
Ap = self.Ap_dict_user.get(val, 1)
if key == 'project':
Ap = self.Ap_dict_proj.get(val, 1)
return Ap
get_Ap = exposed(get_Ap)
def get_Ap_by_keypair(self, username, projectname):
keypair = "%s:%s" % (username, projectname)
Ap = self.Ap_dict_paired.get(keypair, 1)
return Ap
get_Ap_by_keypair = exposed(get_Ap_by_keypair)
def get_Ap_dict(self, key):
if key == 'project':
return self.Ap_dict_proj
elif key == 'user':
return self.Ap_dict_user
else:
return None
get_Ap_dict = exposed(get_Ap_dict)
def is_alive(self):
return True
is_alive = exposed(is_alive)
class HeckleSystem(Component):
"""
Cobalt System component for handling / interacting with Heckle resource manager
External Methods:
add_process_groups -- allocates nodes
get_process_groups -- get process groups based on specs
signal_process_groups -- signal a process group
wait_process_groups -- removed process groups based on specs
Internal Methods:
__init__:
_start_pg:
_check_builds_done:
_wait:
_release_resources:
get_resources:
Queue Manager Methods:
validate_job:
verify_locations:
find_job_locations:
find_queue_equivalence_classes:
"""
name = "system"
implementation = "HeckleBreadboard"
queue_assignments = {}
def __init__(self, *args, **kwargs):
Component.__init__(self, *args, **kwargs)
self.process_groups = ProcessGroupDict()
self.process_groups.item_cls = HeckleProcessGroup
self.queue_assignments["default"] = self.get_resources()
self.hacky_forbidden_nodes = [
] #This is a temporary fix for the forbidden nodes issue
def __repr__(self):
"""
printout representation of the class
"""
indict = self.__dict__
printstr = ""
printstr += "Heckle System Object: Values"
for element in indict:
printstr += str(element) + "::"
if indict[element] == None:
printstr += "None, "
else:
printstr += str(indict[element]) + ", "
printstr += " Process Groups:"
for element in self.process_groups:
printstr += str(element) + "::" + \
str(self.process_groups[element]) + ", "
return printstr
#####################
# Main set of methods
#####################
def add_process_groups(self, specs):
"""
This function takes the specs (a list of jobs) and initiates each job as
a process group.
The process group abstracts the actual job into an object, providing a
single point of control and interaction for all the nodes within that job.
Each job is described by a dict. Each dict contains:
size:
kernel: a String, the name of the kernel image to load.
executable: A string, the name of the command to execute upon the
head node; this could be considered the actual job's file.
stdin, stdout, stderr: Three separate strings, each containing
the file to use for standard communication with the job as it
is running. May be specified, or False.
kerneloptions: A string containing various options for the kernel,
or False.
args: A list
umask: An integer
jobid: An integer
cobalt_log_file: A string containing the log file to use in the
initiation and running of the job itself.
location: List of strings of node / resource names
env: A dict of key:value strings, specifying the environment in
which the job is to run on the node
id: A number
mode:
nodect:
cwd: A string, specifying the current working directory in which
to run the job on the node
walltime: Integer; the time, in minutes, allocated for the job
to run on the node.
user: A string, the name of the user under which this job is to run.
"""
logstr = "System:add_process_groups:"
LOGGER.debug(logstr + "Specs are %s" % specs)
return self.process_groups.q_add(specs)
add_process_groups = exposed(query(add_process_groups))
def get_process_groups(self, specs):
"""get a list of existing allocations"""
LOGGER.debug("System:get_process_groups: specs are %s" % specs)
self._wait()
return self.process_groups.q_get(specs)
get_process_groups = exposed(query(get_process_groups))
def signal_process_groups(self, specs, sig):
"""Free the specified process group (set of allocated nodes)"""
LOGGER.debug(
"System:signal_process_groups: Specs are %s, sig is %s"\
% (specs, sig) )
return self.process_groups.q_get(specs, lambda x, y: x.signal(y), sig)
signal_process_groups = exposed(query(signal_process_groups))
def wait_process_groups(self, specs):
"""Remove terminated process groups"""
LOGGER.debug("System:wait_process_groups; specs are %s" % specs)
return self.process_groups.q_del(specs, lambda x, \
_:self._release_resources(x))
wait_process_groups = exposed(query(wait_process_groups))
#########################################
# Methods for dealing with Process Groups
#########################################
def _check_builds_done(self):
"""
Check to see if the nodes are done building
Starts the process group if all nodes in them are done building
"""
#LOGGER.debug( "System:Check Build Done: Waiting to Start..." )
#sleep(20)
exstr = "System:check_build_done:"
retval = True
pg_list = [x for x in self.process_groups.itervalues()\
if (len(x.pinging_nodes) > 0)]
hiccup = HeckleConnector()
for pgp in pg_list:
for nodename in pgp.pinging_nodes:
teststr = hiccup.get_node_bootstate(nodename)
if teststr == "READY":
if 'fakebuild' in pgp.__dict__ and pgp.fakebuild:
pgp.pinging_nodes.remove(nodename)
LOGGER.debug( exstr + "Node %s done building; "\
+ "%s pinging nodes left" %\
( nodename, len(pgp.pinging_nodes)-1 ) )
else:
LOGGER.debug( exstr + "Node %s not done yet" %\
nodename )
if teststr == "COMPLETED":
LOGGER.debug( exstr +
"Removing node %s...%i pinging nodes left" \
% (nodename, len(pgp.pinging_nodes)-1) )
pgp.pinging_nodes.remove(nodename)
elif teststr in ["BOOTING", "", ""]:
LOGGER.debug(exstr + "Node %s not done yet." % nodename)
elif teststr == "UNALLOCATED":
raise Exception(
exstr +
"Node 'UNALLOCATED'; Possible build error, or system timed out."
)
elif teststr == "CRITFAIL":
raise Exception(
exstr +
"Node says, 'CRITFAIL'. It timed out while building.")
#####################
#### Need to figure a better way to fail gracefully
#####################
if len(pgp.pinging_nodes) == 0:
LOGGER.debug(
"System:Check Build Done: No Pinging Nodes left, Start PG %s Running." \
% pgp.jobid)
pgp.start()
else:
retval = False
return retval
_check_builds_done = automatic(_check_builds_done)
def _wait(self):
"""
Calls the process group container's wait() method
"""
waitlen = len(self.process_groups.keys())
LOGGER.debug("System:_wait:%s process groups." % waitlen)
for pgp in self.process_groups.itervalues():
pgp.wait()
try:
del (self.hacky_forbidden_nodes[pgp.location])
except:
pass
_wait = automatic(_wait)
def _release_resources(self, pgp):
"""
Releases all the Heckle nodes, unreserving them
"""
LOGGER.debug("System:release")
LOGGER.debug("System:Locations are: %s" % pgp.location)
hiccup = HeckleConnector()
hiccup.free_reserved_node(uid=pgp.uid, node_list=pgp.location)
try:
del (self.hacky_forbidden_nodes[pgp.location])
except:
pass
def get_resources(self, specs=None):
"""
Returns a list of free resources (nodes) which match the given specs.
Specs is a dict which describes a job
"""
LOGGER.debug("System:get Resources")
##################################
### Look at this as a future change
##################################
hiccup = HeckleConnector()
if not specs:
return hiccup.node_list
else:
return hiccup.list_available_nodes(**specs)
get_resources = exposed(query(get_resources))
##########################################################
# Methods for interacting with scheduler and queue-manager
##########################################################
def validate_job(self, spec):
"""
Validates a job for submission
-- will the job ever run under the current Heckle configuration?
Steps:
1) Validate Kernel
2) Validate HW
3) Validate Job versus overall
"""
LOGGER.debug("System:Validate Job: Specs are %s" % spec)
hiccup = HeckleConnector()
try:
kernel = spec['kernel']
valid_kernel = hiccup.validkernel(kernel)
if not valid_kernel:
raise Exception("System:Validate Job: Bad Kernel")
except:
spec['kernel'] = 'default'
try:
valid_hw = hiccup.validhw(**spec['attrs'])
if not valid_hw:
raise Exception("System:Validate Job: Bad Hardware Specs: %s" %
spec)
except Exception as strec:
raise Exception("System:Validate Job: Validate Job: %s" % strec)
#try:
#valid_job = hiccup.validjob( **spec )
#if not valid_job:
#raise Exception(
#"System: validate Job: Never enough nodes")
#except:
#raise Exception("System: validate Job: Never enough nodes")
return spec
validate_job = exposed(validate_job)
def verify_locations(self, location_list):
"""
Makes sure a location list is valid
location list is a list of fully qualified strings of node names
ex: nodename.mcs.anl.gov
"""
LOGGER.debug("System:validate Job: Verify Locations")
hiccup = HeckleConnector()
heckle_set = set(hiccup.list_all_nodes())
location_set = set(location_list)
if heckle_set >= location_set:
return location_list
else:
not_valid_list = list(location_set.difference(heckle_set))
raise Exception(
"System:VerifyLocations: Invalid location names: %s" %
not_valid_list)
verify_locations = exposed(verify_locations)
def find_job_location(self, job_location_args, end_times):
"""
Finds a group of not-busy nodes in which to run the job
Arguments:
job_location_args -- A list of dictionaries with info about the job
jobid -- string identifier
nodes -- int number of nodes
queue -- string queue name
required -- ??
utility_score -- ??
threshold -- ??
walltime -- ??
attrs -- dictionary of attributes to match against
end_times -- supposed time the job will end
Returns: Dictionary with list of nodes a job can run on, keyed by jobid
"""
LOGGER.debug("System:find_job_location")
locations = {}
def jobsort(job):
"""Used to sort job list by utility score"""
return job["utility_score"]
job_location_args.sort(key=jobsort)
#Try to match jobs to nodes which can run them
hiccup = HeckleConnector()
for job in job_location_args:
if "attrs" not in job or job["attrs"] is None:
job["attrs"] = {}
print "Job is %s" % job
tempjob = job.copy()
if self.hacky_forbidden_nodes:
if 'forbidden' not in tempjob.keys():
tempjob['forbidden'] = self.hacky_forbidden_nodes
else:
tempjob['forbidden'].extend(self.hacky_forbidden_nodes)
#############################
### Look at this as point of change
### Think: For node in unreserved nodes
### Choose node from list
### Remove node from unreserved nodes
#############################
try:
resources = hiccup.find_job_location(**
job) #get matching nodes
if not resources:
continue
except Exception as err:
LOGGER.info("System:find_job_location: Error %s" % err)
continue
node_list = []
# Build a list of appropriate nodes
for node in resources:
node_list.append(node)
self.hacky_forbidden_nodes.append(node)
locations[job["jobid"]] = node_list
LOGGER.info("System:find_job_location: locations are %s" % locations)
return locations
find_job_location = exposed(find_job_location)
def find_queue_equivalence_classes(self, reservation_dict, \
active_queue_names):
"""
Finds equivalent queues
An equivalent queue is a queue which can run upon the same partition(s)
For now, with one partition (everything!) this is irrelevant.
Returns: equiv= [{'reservations': [], 'queues': ['default']}]
"""
#LOGGER.debug("System:find queue equivalence classes" )
equiv = []
#print "Reservation_Dict is: %s" % reservation_dict
#print "Active_queue_names is %s" % active_queue_names
#print "Queue assignments are: %s" % self.queue_assignments
for queue in self.queue_assignments:
# skip queues that aren't running
if not queue in active_queue_names:
continue
found_a_match = False
#print "Heckle Queue is %s" % queue
for equ in equiv:
print "Heckle Equ is %s" % equ
if equ['data'].intersection(self.queue_assignments[queue]):
equ['queues'].add(queue)
equ['data'].update(self.queue_assignments[queue])
found_a_match = True
break
if not found_a_match:
equiv.append({
'queues': set([queue]),
'data': set(self.queue_assignments[queue]),
'reservations': set()
})
real_equiv = []
for eq_class in equiv:
found_a_match = False
for equ in real_equiv:
if equ['queues'].intersection(eq_class['queues']):
equ['queues'].update(eq_class['queues'])
equ['data'].update(eq_class['data'])
found_a_match = True
break
if not found_a_match:
real_equiv.append(eq_class)
equiv = real_equiv
for eq_class in equiv:
for res_name in reservation_dict:
for host_name in reservation_dict[res_name].split(":"):
if host_name in eq_class['data']:
eq_class['reservations'].add(res_name)
for key in eq_class:
eq_class[key] = list(eq_class[key])
del eq_class['data']
return equiv
find_queue_equivalence_classes = exposed(find_queue_equivalence_classes)
def get_partitions(self, locations):
"""
Work-around to get the cqadm to run a single job on this system
PRE: locations is a list of dict of strings of possible node names
POST: if good, return locations
if not good, raise exception and list bad nodes
"""
logstr = "System:get_partition: "
hiccup = HeckleConnector()
heckle_node_set = set(hiccup.list_all_nodes())
locs = locations[0]['name']
LOGGER.debug(logstr + "raw is are: %s" % locations)
LOGGER.debug(logstr + "vals are: %s" % locs)
if type(locs) == ListType:
locset = set(locs)
badlocations = locset.difference(heckle_node_set)
if badlocations:
raise Exception(logstr +
"Bad Locations: %s " % list(badlocations))
elif type(locs) == StringType:
if locs not in locations:
raise Exception(logstr + "Bad Locations: %s" % locs)
else:
raise Exception( logstr +
"location needs to be string or list of strings, you provided %s : %s" \
% ( type(locs), locs))
return locations
get_partitions = exposed(get_partitions)
class ClusterSystem (ClusterBaseSystem):
"""cluster system component.
Methods:
configure -- load partitions from the bridge API
add_process_groups -- add (start) an mpirun process on the system (exposed, ~query)
get_process_groups -- retrieve mpirun processes (exposed, query)
wait_process_groups -- get process groups that have exited, and remove them from the system (exposed, query)
signal_process_groups -- send a signal to the head process of the specified process groups (exposed, query)
update_partition_state -- update partition state from the bridge API (runs as a thread)
"""
name = "system"
implementation = "cluster_system"
logger = logger
def __init__ (self, *args, **kwargs):
ClusterBaseSystem.__init__(self, *args, **kwargs)
self.process_groups.item_cls = ClusterProcessGroup
def __setstate__(self, state):
ClusterBaseSystem.__setstate__(self, state)
self.process_groups.item_cls = ClusterProcessGroup
def add_process_groups (self, specs):
"""Create a process group.
Arguments:
spec -- dictionary hash specifying a process group to start
"""
self.logger.info("add_process_groups(%r)", specs)
process_groups = self.process_groups.q_add(specs)
for pgroup in process_groups:
self.logger.info("job %s/%s: process group %s created to track script",
pgroup.jobid, pgroup.user, pgroup.id)
return process_groups
add_process_groups = exposed(query(add_process_groups))
def get_process_groups (self, specs):
self._get_exit_status()
return self.process_groups.q_get(specs)
get_process_groups = exposed(query(get_process_groups))
def _get_exit_status (self):
try:
running = ComponentProxy("forker").active_list()
except:
self.logger.error("failed to contact forker component for list of running jobs")
return
for each in self.process_groups.itervalues():
if each.head_pid not in running and each.exit_status is None:
# FIXME: i bet we should consider a retry thing here -- if we fail enough times, just
# assume the process is dead? or maybe just say there's no exit code the first time it happens?
# maybe the second choice is better
try:
dead_dict = ComponentProxy("forker").get_status(each.head_pid)
except Queue.Empty:
self.logger.error("failed call for get_status from forker component for pg %s", each.head_pid)
return
if dead_dict is None:
self.logger.info("process group %i: job %s/%s exited with unknown status", each.id, each.jobid, each.user)
each.exit_status = 1234567
else:
each.exit_status = dead_dict["exit_status"]
if dead_dict["signum"] == 0:
self.logger.info("process group %i: job %s/%s exited with status %i",
each.id, each.jobid, each.user, each.exit_status)
else:
if dead_dict["core_dump"]:
core_dump_str = ", core dumped"
else:
core_dump_str = ""
self.logger.info("process group %i: job %s/%s terminated with signal %s%s",
each.id, each.jobid, each.user, dead_dict["signum"], core_dump_str)
_get_exit_status = automatic(_get_exit_status)
def wait_process_groups (self, specs):
self._get_exit_status()
process_groups = [pg for pg in self.process_groups.q_get(specs) if pg.exit_status is not None]
for process_group in process_groups:
thread.start_new_thread(self.clean_nodes, (process_group,))
return process_groups
wait_process_groups = locking(exposed(query(wait_process_groups)))
def signal_process_groups (self, specs, signame="SIGINT"):
my_process_groups = self.process_groups.q_get(specs)
for pg in my_process_groups:
if pg.exit_status is None:
try:
ComponentProxy("forker").signal(pg.head_pid, signame)
except:
self.logger.error("Failed to communicate with forker when signalling job")
return my_process_groups
signal_process_groups = exposed(query(signal_process_groups))
def clean_nodes(self, pg):
try:
tmp_data = pwd.getpwnam(pg.user)
groupid = tmp_data.pw_gid
group_name = grp.getgrgid(groupid)[0]
except KeyError:
group_name = ""
self.logger.error("Job %s/%s unable to determine group name for epilogue" % (pg.jobid, pg.user))
processes = []
for host in pg.location:
h = host.split(":")[0]
try:
p = subprocess.Popen(["/usr/bin/ssh", h, pg.config.get("epilogue"), str(pg.jobid), pg.user, group_name],
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
p.host = h
processes.append(p)
except:
self.logger.error("Job %s/%s failed to run epilogue on host %s", pg.jobid, pg.user, h, exc_info=True)
start = time.time()
dirty_nodes = []
while True:
running = False
for p in processes:
if p.poll() is None:
running = True
break
if not running:
break
if time.time() - start > float(pg.config.get("epilogue_timeout")):
for p in processes:
if p.poll() is None:
try:
os.kill(p.pid, signal.SIGTERM)
dirty_nodes.append(p.host)
self.logger.error("Job %s/%s epilogue timed out on host %s" % (pg.jobid, pg.user, p.host))
except:
self.logger.error("epilogue for %s already terminated" %p.host)
break
else:
time.sleep(5)
for p in processes:
if p.poll() > 0:
self.logger.error("epilogue failed for host %s", p.host)
self.logger.error("stderr from epilogue on host %s: [%s]", p.host, p.stderr.read().strip())
self.lock.acquire()
try:
self.logger.info("job finished on %s", Cobalt.Util.merge_nodelist(pg.location))
for host in pg.location:
self.running_nodes.discard(host)
if dirty_nodes:
for host in dirty_nodes:
self.down_nodes.add(host)
self.logger.info("epilogue timed out, marking host %s down" % host)
p = subprocess.Popen([pg.config.get("epi_epilogue"), str(pg.jobid), pg.user, group_name] + dirty_nodes)
del self.process_groups[pg.id]
except:
self.logger.error("error in clean_nodes", exc_info=True)
self.lock.release()
class BGSystem(BGBaseSystem):
"""Blue Gene system component.
Methods:
configure -- load partitions from the bridge API
update_partition_state -- update partition state from the bridge API (runs as a thread)
"""
name = "system"
implementation = __name__.split('.')[-1]
logger = logger
bgsystem_config = BGBaseSystem.bgsystem_config
_configfields = ['diag_script_location', 'diag_log_file', 'kernel']
mfields = [
field for field in _configfields if not bgsystem_config.has_key(field)
]
if mfields:
print "Missing option(s) in cobalt config file [bgsystem] section: %s" % (
" ".join(mfields))
sys.exit(1)
if bgsystem_config.get('kernel') == "true":
_kernel_configfields = ['bootprofiles', 'partitionboot']
mfields = [
field for field in _kernel_configfields
if not bgsystem_config.has_key(field)
]
if mfields:
print "Missing option(s) in cobalt config file [bgsystem] section: %s" % (
" ".join(mfields))
sys.exit(1)
def __init__(self, *args, **kwargs):
BGBaseSystem.__init__(self, *args, **kwargs)
sys.setrecursionlimit(5000)
self.process_groups.item_cls = BGProcessGroup
self.diag_pids = dict()
self.configure()
# initiate the process before starting any threads
thread.start_new_thread(self.update_partition_state, tuple())
def __getstate__(self):
state = {}
state.update(BGBaseSystem.__getstate__(self))
state.update({'bgsystem_version': 3})
return state
def __setstate__(self, state):
BGBaseSystem.__setstate__(self, state)
self.process_groups.item_cls = BGProcessGroup
self.configure()
self.update_relatives()
self._restore_partition_state(state)
# initiate the process before starting any threads
thread.start_new_thread(self.update_partition_state, tuple())
def save_me(self):
Component.save(self)
save_me = automatic(save_me,
float(bgsystem_config.get('save_me_interval', 10)))
def _get_node_card(self, name, state):
if not self.node_card_cache.has_key(name):
self.node_card_cache[name] = NodeCard(name, state)
return self.node_card_cache[name]
def _new_partition_dict(self, partition_def, bp_cache={}):
# that 32 is not really constant -- it needs to either be read from cobalt.conf or from the bridge API -- replaced for now by config file check.
#NODES_PER_NODECARD = 32
#we're going to get this from the bridge. I think we can get the
#size of the target partition and eliminate this.
node_list = []
if partition_def.small:
bp_name = partition_def.base_partitions[0].id
for nc in partition_def._node_cards:
node_list.append(
self._get_node_card(bp_name + "-" + nc.id, nc.state))
else:
try:
for bp in partition_def.base_partitions:
if bp.id not in bp_cache:
bp_cache[bp.id] = []
for nc in Cobalt.bridge.NodeCardList.by_base_partition(
bp):
bp_cache[bp.id].append(
self._get_node_card(bp.id + "-" + nc.id,
nc.state))
node_list += bp_cache[bp.id]
except BridgeException:
print "Error communicating with the bridge during initial config. Terminating."
sys.exit(1)
d = dict(
name=partition_def.id,
queue="default",
size=partition_def.
partition_size, #self.NODES_PER_NODECARD * len(node_list),
node_cards=node_list,
switches=[s.id for s in partition_def.switches],
state=_get_state(partition_def),
)
return d
def _detect_wiring_deps(self, partition, wiring_cache={}):
def _kernel():
s2 = set(p.switches)
if s1.intersection(s2):
p._wiring_conflicts.add(partition.name)
partition._wiring_conflicts.add(p.name)
self.logger.debug(
"%s and %s havening problems (wiring conflict)" %
(partition.name, p.name))
s1 = set(partition.switches)
if wiring_cache.has_key(partition.size):
for p in wiring_cache[partition.size]:
if partition.name != p.name:
_kernel()
else:
wiring_cache[partition.size] = [partition]
for p in self._partitions.values():
if p.size == partition.size and partition.name != p.name:
wiring_cache[partition.size].append(p)
_kernel()
def configure(self):
"""Read partition data from the bridge."""
self.logger.info("configure()")
try:
system_def = Cobalt.bridge.PartitionList.by_filter()
except BridgeException:
print "Error communicating with the bridge during initial config. Terminating."
sys.exit(1)
# initialize a new partition dict with all partitions
#
partitions = PartitionDict()
tmp_list = []
wiring_cache = {}
bp_cache = {}
for partition_def in system_def:
tmp_list.append(self._new_partition_dict(partition_def, bp_cache))
partitions.q_add(tmp_list)
# update object state
self._partitions.clear()
self._partitions.update(partitions)
# find the wiring deps
start = time.time()
for p in self._partitions.values():
self._detect_wiring_deps(p, wiring_cache)
end = time.time()
self.logger.info("took %f seconds to find wiring deps" % (end - start))
# update state information
for p in self._partitions.values():
if p.state != "busy":
for nc in p.node_cards:
if nc.used_by:
if self.partition_really_busy(p, nc):
p.state = "blocked (%s)" % nc.used_by
break
for dep_name in p._wiring_conflicts:
if self._partitions[dep_name].state == "busy":
p.state = "blocked-wiring (%s)" % dep_name
break
def partition_really_busy(self, part, nc):
'''Check to see if a 16-node partiton is really busy, or it just
it's neighbor is using the nodecard.
True if really busy, else False
'''
if part.size != 16: #Everything else is a full nodecard
return True
really_busy = False
for nc in part.node_cards:
#break out information and see if this is in-use by a sibling.
#get the size of the nc.used_by partition, if it's used by something 32 or larger then we really are busy
if self._partitions[nc.used_by].size > 16:
really_busy = True
break
if nc.used_by:
try:
rack, midplane, nodecard = Cobalt.Components.bg_base_system.parse_nodecard_location(
nc.used_by)
except RuntimeError:
#This isn't in use by a nodecard-level partition, so yeah, this is busy.
really_busy = True
break
if (int(rack) != nc.rack or int(midplane) != nc.midplane
or int(nodecard) != nc.nodecard):
really_busy = True
break
return really_busy
def update_partition_state(self):
"""Use the quicker bridge method that doesn't return nodecard information to update the states of the partitions"""
def _start_partition_cleanup(p):
self.logger.info("partition %s: marking partition for cleaning",
p.name)
p.cleanup_pending = True
partitions_cleanup.append(p)
_set_partition_cleanup_state(p)
p.reserved_until = False
p.reserved_by = None
p.used_by = None
def _set_partition_cleanup_state(p):
p.state = "cleanup"
for part in p._children:
if bridge_partition_cache[
part.name].state == "RM_PARTITION_FREE":
part.state = "blocked (%s)" % (p.name, )
else:
part.state = "cleanup"
for part in p._parents:
if part.state == "idle":
part.state = "blocked (%s)" % (p.name, )
while True:
try:
system_def = Cobalt.bridge.PartitionList.info_by_filter()
except BridgeException:
self.logger.error(
"Error communicating with the bridge to update partition state information."
)
self.bridge_in_error = True
Cobalt.Util.sleep(5) # wait a little bit...
continue # then try again
try:
bg_object = Cobalt.bridge.BlueGene.by_serial()
for bp in bg_object.base_partitions:
for nc in Cobalt.bridge.NodeCardList.by_base_partition(bp):
self.node_card_cache[bp.id + "-" +
nc.id].state = nc.state
except:
self.logger.error(
"Error communicating with the bridge to update nodecard state information."
)
self.bridge_in_error = True
Cobalt.Util.sleep(5) # wait a little bit...
continue # then try again
self.bridge_in_error = False
busted_switches = []
for s in bg_object.switches:
if s.state != "RM_SWITCH_UP":
busted_switches.append(s.id)
# set all of the nodecards to not busy
for nc in self.node_card_cache.values():
nc.used_by = ''
# update the state of each partition
self._partitions_lock.acquire()
now = time.time()
partitions_cleanup = []
bridge_partition_cache = {}
self.offline_partitions = []
missing_partitions = set(self._partitions.keys())
new_partitions = []
try:
for partition in system_def:
bridge_partition_cache[partition.id] = partition
missing_partitions.discard(partition.id)
if self._partitions.has_key(partition.id):
p = self._partitions[partition.id]
p.state = _get_state(partition)
p._update_node_cards()
if p.reserved_until and now > p.reserved_until:
self.logger.info(
"partition %s: reservation has expired; clearing reservation.",
p.name)
p.reserved_until = False
p.reserved_by = None
else:
new_partitions.append(partition)
# remove the missing partitions and their wiring relations
for pname in missing_partitions:
self.logger.info("missing partition removed: %s", pname)
p = self._partitions[pname]
for dep_name in p._wiring_conflicts:
self.logger.debug(
"removing wiring dependency from: %s", dep_name)
self._partitions[dep_name]._wiring_conflicts.discard(
p.name)
if p.name in self._managed_partitions:
self._managed_partitions.discard(p.name)
del self._partitions[p.name]
bp_cache = {}
wiring_cache = {}
# throttle the adding of new partitions so updating of
# machine state doesn't get bogged down
for partition in new_partitions[:8]:
self.logger.info("new partition found: %s", partition.id)
bridge_p = Cobalt.bridge.Partition.by_id(partition.id)
self._partitions.q_add(
[self._new_partition_dict(bridge_p, bp_cache)])
p = self._partitions[bridge_p.id]
self._detect_wiring_deps(p, wiring_cache)
# if partitions were added or removed, then update the relationships between partitions
if len(missing_partitions) > 0 or len(new_partitions) > 0:
self.update_relatives()
for p in self._partitions.values():
if p.cleanup_pending:
if p.used_by:
# if the partition has a pending cleanup request, then set the state so that cleanup will be
# performed
_start_partition_cleanup(p)
else:
# if the cleanup has already been initiated, then see how it's going
busy = []
parts = list(p._all_children)
parts.append(p)
for part in parts:
bpart = bridge_partition_cache[part.name]
try:
if bpart.state != "RM_PARTITION_FREE":
self.logger.debug(
"partition %s: sub-partition %s is still busy; attempting another destroy",
p.name, part.name)
busy.append(part.name)
bpart.destroy()
except Cobalt.bridge.IncompatibleState:
pass
except:
self.logger.info(
"partition %s: an exception occurred while attempting to destroy partition %s",
p.name,
part.name,
exc_info=1)
if len(busy) > 0:
_set_partition_cleanup_state(p)
self.logger.info(
"partition %s: still cleaning; busy partition(s): %s",
p.name, ", ".join(busy))
else:
p.cleanup_pending = False
self.logger.info(
"partition %s: cleaning complete", p.name)
if p.state == "busy":
# FIXME: this should not be necessary any longer since all jobs reserve the resources. --brt
# when the partition becomes busy, if a script job isn't reserving it, then release the reservation
if not p.reserved_by:
p.reserved_until = False
elif p.state != "cleanup":
if p.reserved_until:
p.state = "allocated"
for part in p._parents:
if part.state == "idle":
part.state = "blocked (%s)" % (p.name, )
for part in p._children:
if part.state == "idle":
part.state = "blocked (%s)" % (p.name, )
elif bridge_partition_cache[
p.
name].state == "RM_PARTITION_FREE" and p.used_by:
# FIXME: should we check the partition state or use reserved by == NULL instead? now that all jobs
# reserve resources, a partition without a reservation that is also in use should probably be cleaned
# up regardless of partition state. --brt
# if the job assigned to the partition has completed, then set the state so that cleanup will be
# performed
_start_partition_cleanup(p)
continue
for diag_part in self.pending_diags:
if p.name == diag_part.name or p.name in diag_part.parents or p.name in diag_part.children:
p.state = "blocked by pending diags"
for nc in p.node_cards:
if nc.used_by:
if self.partition_really_busy(p, nc):
p.state = "blocked (%s)" % nc.used_by
if nc.state != "RM_NODECARD_UP":
p.state = "hardware offline: nodecard %s" % nc.id
self.offline_partitions.append(p.name)
for s in p.switches:
if s in busted_switches:
p.state = "hardware offline: switch %s" % s
self.offline_partitions.append(p.name)
for dep_name in p._wiring_conflicts:
if self._partitions[dep_name].state in [
"busy", "allocated", "cleanup"
]:
p.state = "blocked-wiring (%s)" % dep_name
break
for part_name in self.failed_diags:
part = self._partitions[part_name]
if p.name == part.name:
p.state = "failed diags"
elif p.name in part.parents or p.name in part.children:
p.state = "blocked by failed diags"
except:
self.logger.error("error in update_partition_state",
exc_info=True)
self._partitions_lock.release()
# cleanup partitions and set their kernels back to the default (while _not_ holding the lock)
pnames_cleaned = []
for p in partitions_cleanup:
self.logger.info(
"partition %s: starting partition destruction", p.name)
pnames_destroyed = []
parts = list(p._all_children)
parts.append(p)
for part in parts:
pnames_cleaned.append(part.name)
bpart = bridge_partition_cache[part.name]
try:
if bpart.state != "RM_PARTITION_FREE":
bpart.destroy()
pnames_destroyed.append(part.name)
except Cobalt.bridge.IncompatibleState:
pass
except:
self.logger.info(
"partition %s: an exception occurred while attempting to destroy partition %s",
p.name,
part.name,
exc_info=1)
if len(pnames_destroyed) > 0:
self.logger.info(
"partition %s: partition destruction initiated for %s",
p.name, ", ".join(pnames_destroyed))
else:
self.logger.info(
"partition %s: no partition destruction was required",
p.name)
try:
self._clear_kernel(p.name)
self.logger.info("partition %s: kernel settings cleared",
p.name)
except:
self.logger.error(
"partition %s: failed to clear kernel settings",
p.name)
job_filter = Cobalt.bridge.JobFilter()
job_filter.job_type = Cobalt.bridge.JOB_TYPE_ALL_FLAG
jobs = Cobalt.bridge.JobList.by_filter(job_filter)
for job in jobs:
if job.partition_id in pnames_cleaned:
try:
job.cancel()
self.logger.info("partition %s: task %d canceled",
job.partition_id, job.db_id)
except (Cobalt.bridge.IncompatibleState,
Cobalt.bridge.JobNotFound):
pass
Cobalt.Util.sleep(10)
def _mark_partition_for_cleaning(self, pname, jobid):
self._partitions_lock.acquire()
try:
p = self._partitions[pname]
if p.used_by == jobid:
p.cleanup_pending = True
self.logger.info("partition %s: partition marked for cleanup",
pname)
elif p.used_by != None:
self.logger.info("partition %s: job %s was not the current partition user (%s); partition not marked " + \
"for cleanup", pname, jobid, p.used_by)
except:
self.logger.exception(
"partition %s: unexpected exception while marking the partition for cleanup",
pname)
self._partitions_lock.release()
def _validate_kernel(self, kernel):
if self.bgsystem_config.get('kernel') != 'true':
return True
kernel_dir = "%s/%s" % (os.path.expandvars(
self.bgsystem_config.get('bootprofiles')), kernel)
return os.path.exists(kernel_dir)
def _set_kernel(self, partition, kernel):
'''Set the kernel to be used by jobs run on the specified partition'''
if self.bgsystem_config.get('kernel') != 'true':
if kernel != "default":
raise Exception("custom kernel capabilities disabled")
return
partition_link = "%s/%s" % (os.path.expandvars(
self.bgsystem_config.get('partitionboot')), partition)
kernel_dir = "%s/%s" % (os.path.expandvars(
self.bgsystem_config.get('bootprofiles')), kernel)
try:
current = os.readlink(partition_link)
except OSError, e:
if e.errno == errno.ENOENT:
self.logger.warning(
"partition %s: partitionboot location %s does not exist; creating link",
partition, partition_link)
current = None
elif e.errno == errno.EINVAL:
self.logger.warning(
"partition %s: partitionboot location %s is not a symlink; removing and resetting",
partition, partition_link)
current = None
else:
self.logger.warning(
"partition %s: failed to read partitionboot location %s: %s",
partition, partition_link, e.strerror)
raise
if current != kernel_dir:
if not self._validate_kernel(kernel):
self.logger.error(
"partition %s: kernel directory \"%s\" does not exist",
partition, kernel_dir)
raise Exception("kernel directory \"%s\" does not exist" %
(kernel_dir, ))
if current:
self.logger.info(
"partition %s: updating boot image; currently set to \"%s\"",
partition,
current.split('/')[-1])
try:
try:
os.unlink(partition_link)
except OSError, e:
if e.errno != errno.ENOENT:
self.logger.error(
"partition %s: unable to unlink \"%s\": %s",
partition, partition_link, e.strerror)
raise
try:
os.symlink(kernel_dir, partition_link)
except OSError, e:
self.logger.error(
"partition %s: failed to reset boot location \"%s\" to \"%s\": %s"
% (partition, partition_link, kernel_dir, e.strerror))
raise
for forker in cleanup.keys():
if len(cleanup[forker]) > 0:
try:
ComponentProxy(forker).cleanup_children(cleanup[forker])
except ComponentLookupError:
self.logger.error(
"failed to contact the %s component to cleanup children",
forker)
except:
self.logger.error(
"unexpected exception while requesting that the %s component perform cleanup",
forker,
exc_info=True)
_get_exit_status = automatic(
_get_exit_status,
float(get_cluster_system_config('get_exit_status_interval', 10)))
def wait_process_groups(self, specs):
self._get_exit_status()
process_groups = [
pg for pg in self.process_groups.q_get(specs)
if pg.exit_status is not None
]
for process_group in process_groups:
self.clean_nodes(process_group.location, process_group.user,
process_group.jobid)
return process_groups
wait_process_groups = locking(exposed(query(wait_process_groups)))
def check_services (self):
"""Ping each service to check its availability.
Unregister unresponsive services.
"""
for service in self.services.values():
try:
ServerProxy(service.location).ping()
except socket.error, e:
self.logger.warn("unable to contact %s [%s]" % (service.name, e))
self.unregister(service.name)
except Exception, e:
self.logger.error("error in %s (%s)" % (service.name, e))
self.unregister(service.name)
check_services = automatic(check_services)
class TimingServiceLocator (ServiceLocator):
"""ServiceLocator with passive expiration.
Attributes:
expire -- number of seconds to expire a service
Methods:
expire_services -- check service timestamps (automatic)
"""
implementation = "slp"
class Simulator(BGBaseSystem):
"""Generic system simulator.
Methods:
configure -- load partitions from an xml file
reserve_partition -- lock a partition for use by a process_group (exposed)
release_partition -- release a locked (busy) partition (exposed)
add_process_groups -- add (start) a process group on the system (exposed, query)
get_process_groups -- retrieve process groups (exposed, query)
wait_process_groups -- get process groups that have exited, and remove them from the system (exposed, query)
signal_process_groups -- send a signal to the head process of the specified process groups (exposed, query)
update_partition_state -- simulates updating partition state from the bridge API (automatic)
"""
name = "system"
implementation = "simulator"
logger = logger
bgsystem_config = BGBaseSystem.bgsystem_config
def __init__(self, *args, **kwargs):
BGBaseSystem.__init__(self, *args, **kwargs)
sys.setrecursionlimit(5000) #why this magic number?
self.process_groups.item_cls = BGSimProcessGroup
self.config_file = kwargs.get("config_file", None)
self.failed_components = set()
if self.config_file is not None:
self.configure(self.config_file)
def __getstate__(self):
state = {}
state.update(BGBaseSystem.__getstate__(self))
state.update({'simulator_version': 3, 'config_file': self.config_file})
return state
def __setstate__(self, state):
BGBaseSystem.__setstate__(self, state)
self.config_file = state['config_file']
self.process_groups.item_cls = BGSimProcessGroup
if self.config_file is not None:
self.configure(self.config_file)
self.update_relatives()
self._restore_partition_state(state)
def save_me(self):
Component.save(self)
save_me = automatic(save_me,
float(bgsystem_config.get('save_me_interval', 10)))
def configure(self, config_file):
"""Configure simulated partitions.
Arguments:
config_file -- xml configuration file
"""
def _get_node_card(name):
if not self.node_card_cache.has_key(name):
self.node_card_cache[name] = NodeCard(name)
return self.node_card_cache[name]
self.logger.info("configure()")
try:
system_doc = ElementTree.parse(config_file)
except IOError:
self.logger.error("unable to open file: %r" % config_file)
self.logger.error("exiting...")
sys.exit(1)
except:
self.logger.error("problem loading data from file: %r" %
config_file)
self.logger.error("exiting...")
sys.exit(1)
system_def = system_doc.getroot()
if system_def.tag != "BG":
self.logger.error("unexpected root element in %r: %r" %
(config_file, system_def.tag))
self.logger.error("exiting...")
sys.exit(1)
# that 32 is not really constant -- it needs to either be read from cobalt.conf or from the bridge API
NODES_PER_NODECARD = 32
# initialize a new partition dict with all partitions
#
partitions = PartitionDict()
tmp_list = []
# this is going to hold partition objects from the bridge (not our own Partition)
wiring_cache = {}
bp_cache = {}
for partition_def in system_def.getiterator("Partition"):
node_list = []
switch_list = []
for nc in partition_def.getiterator("NodeCard"):
node_list.append(_get_node_card(nc.get("id")))
nc_count = len(node_list)
if not wiring_cache.has_key(nc_count):
wiring_cache[nc_count] = []
wiring_cache[nc_count].append(partition_def.get("name"))
for s in partition_def.getiterator("Switch"):
switch_list.append(s.get("id"))
tmp_list.append(
dict(
name=partition_def.get("name"),
queue=partition_def.get("queue", "default"),
size=NODES_PER_NODECARD * nc_count,
node_cards=node_list,
switches=switch_list,
state="idle",
))
partitions.q_add(tmp_list)
# find the wiring deps
for size in wiring_cache:
for p in wiring_cache[size]:
p = partitions[p]
s1 = set(p.switches)
for other in wiring_cache[size]:
other = partitions[other]
if (p.name == other.name):
continue
s2 = set(other.switches)
if s1.intersection(s2):
self.logger.info(
"found a wiring dep between %s and %s", p.name,
other.name)
partitions[p.name]._wiring_conflicts.add(other.name)
# update object state
self._partitions.clear()
self._partitions.update(partitions)
def reserve_partition(self, name, size=None):
"""Reserve a partition and block all related partitions.
Arguments:
name -- name of the partition to reserve
size -- size of the process group reserving the partition (optional)
"""
try:
self._partitions_lock.acquire()
try:
partition = self.partitions[name]
except KeyError:
self.logger.error(
"reserve_partition(%r, %r) [does not exist]" %
(name, size))
return False
if partition.state != "allocated":
self.logger.error("reserve_partition(%r, %r) [%s]" %
(name, size, partition.state))
return False
if not partition.functional:
self.logger.error(
"reserve_partition(%r, %r) [not functional]" %
(name, size))
if size is not None and size > partition.size:
self.logger.error("reserve_partition(%r, %r) [size mismatch]" %
(name, size))
return False
partition.state = "busy"
# partition.reserved_until = False
finally:
self._partitions_lock.release()
# explicitly call this, since the above "busy" is instantaneously available
self.update_partition_state()
self.logger.info("reserve_partition(%r, %r)" % (name, size))
return True
reserve_partition = exposed(reserve_partition)
def release_partition(self, name):
"""Release a reserved partition.
Arguments:
name -- name of the partition to release
"""
try:
self._partitions_lock.acquire()
try:
partition = self.partitions[name]
except KeyError:
self.logger.error("release_partition(%r) [already free]" %
(name))
return False
if not partition.state == "busy":
self.logger.info("release_partition(%r) [not busy]" % (name))
return False
if partition.used_by is not None:
partition.state = "allocated"
else:
partition.state = "idle"
finally:
self._partitions_lock.release()
# explicitly unblock the blocked partitions
self.update_partition_state()
self.logger.info("release_partition(%r)" % (name))
return True
release_partition = exposed(release_partition)
def _mark_partition_for_cleaning(self, pname, jobid):
pass
def _set_kernel(self, partition, kernel):
# TODO: allow the kernel set step to work in the simulator. For now this doesn't fly.
pass
def update_partition_state(self):
# first, set all of the nodecards to not busy
for nc in self.node_card_cache.values():
nc.used_by = ''
self._partitions_lock.acquire()
try:
for p in self._partitions.values():
p._update_node_cards()
now = time.time()
# since we don't have the bridge, a partition which isn't busy
# should be set to idle and then blocked states can be derived
for p in self._partitions.values():
if p.state != "busy":
p.state = "idle"
if p.reserved_until and now > p.reserved_until:
p.reserved_until = None
p.reserved_by = None
for p in self._partitions.values():
if p.state == "busy":
# when the partition becomes busy, if a script job isn't reserving it, then release the reservation
if not p.reserved_by:
p.reserved_until = False
else:
if p.reserved_until:
p.state = "allocated"
for part in p._parents:
if part.state == "idle":
part.state = "blocked (%s)" % (p.name, )
for part in p._children:
if part.state == "idle":
part.state = "blocked (%s)" % (p.name, )
for diag_part in self.pending_diags:
if p.name == diag_part.name or p.name in diag_part.parents or p.name in diag_part.children:
p.state = "blocked by pending diags"
for nc in p.node_cards:
if nc.used_by:
p.state = "blocked (%s)" % nc.used_by
break
for dep_name in p._wiring_conflicts:
if self._partitions[dep_name].state in [
"allocated", "busy"
]:
p.state = "blocked-wiring (%s)" % dep_name
break
for part_name in self.failed_diags:
part = self._partitions[part_name]
if p.name == part.name:
p.state = "failed diags"
elif p.name in part.parents or p.name in part.children:
p.state = "blocked by failed diags"
except:
self.logger.error("error in update_partition_state", exc_info=True)
self._partitions_lock.release()
update_partition_state = automatic(update_partition_state)
def add_failed_components(self, component_names):
success = []
for name in component_names:
if self.node_card_cache.has_key(name):
self.failed_components.add(name)
success.append(name)
else:
for p in self._partitions.values():
if name in p.switches:
self.failed_components.add(name)
success.append(name)
break
return success
add_failed_component = exposed(add_failed_components)
def del_failed_components(self, component_names):
success = []
for name in component_names:
try:
self.failed_components.remove(name)
success.append(name)
except KeyError:
pass
return success
del_failed_components = exposed(del_failed_components)
def list_failed_components(self, component_names):
return list(self.failed_components)
list_failed_components = exposed(list_failed_components)
def launch_diags(self, partition, test_name):
exit_value = 0
for nc in partition.node_cards:
if nc.id in self.failed_components:
exit_value = 1
for switch in partition.switches:
if switch in self.failed_components:
exit_value = 2
self.finish_diags(partition, test_name, exit_value)
class HeckleSystem(Component):
"""
Cobalt System component for handling / interacting with Heckle resource manager
External Methods:
add_process_groups -- allocates nodes
get_process_groups -- get process groups based on specs
signal_process_groups -- signal a process group
wait_process_groups -- removed process groups based on specs
Internal Methods:
__init__:
_start_pg:
_check_builds_done:
_wait:
_release_resources:
get_resources:
Queue Manager Methods:
validate_job:
verify_locations:
find_job_locations:
find_queue_equivalence_classes:
"""
name = "system"
implementation = "HeckleBreadboard"
queue_assignments = {}
def __init__(self, *args, **kwargs):
logger.debug(
"heckle: System: init ... %s ... &&&&&&&&&&&&&&&&&&&&&&&&&&&&& I am here as well &&&&&&&&&&&&&&&&&&&&&&&&&"
% threading.current_thread().getName())
Component.__init__(self, *args, **kwargs)
self.process_groups = ProcessGroupDict()
self.process_groups.item_cls = HeckleProcessGroup
self.resources = ResourceDict()
self.queue_assignments["default"] = self.resources.keys()
print "\n\n\n\n"
print "Queue assignments are: %s" % self.queue_assignments
def __repr__(self):
"""
printout representation of the class
"""
indict = self.__dict__
printstr = ""
printstr += "Heckle System Object: Values"
for element in indict:
printstr += str(element) + "::"
if indict[element] == None:
printstr += "None, "
else:
printstr += str(indict[element]) + ", "
printstr += " Process Groups:"
for element in self.process_groups:
printstr += str(element) + "::" + str(
self.process_groups[element]) + ", "
return printstr
#####################
# Main set of methods
#####################
def add_process_groups(self, specs):
"""
Allocate nodes and add the list of those allocated to the PGDict
specs is a list of dictionaries
Each dictionary contains the specifications for all the nodes in the process group
"""
#Debug - Take out to really rebuild
#### Need to check the environment variable for fakebuild
try:
specs[0]['fakebuild'] = specs[0]['env']['fakebuild']
del specs[0]['env']['fakebuild']
except:
pass
print "Heckle System: add_process_groups: <<<<<<<<<<<<<<<<<< OK< Debug< This< : %s" % specs
HICCUP = HeckleConnector()
#try:
reservation = HICCUP.make_reservation(**(specs[0]))
heckle_res_id = reservation.id
uid = specs[0]['user']
logger.debug("Heckle System: heckle_res_id = %i" % heckle_res_id)
specs[0]['heckle_res_id'] = heckle_res_id
return self.process_groups.q_add(
specs, lambda x, _: self._start_pg(
x, heckle_res_id=heckle_res_id, uid=uid))
#except Exception as hec_except:
## could do something here about problems
## 1) Kill job, then resubmit job w/o node name(s)
## Would require access to cqadm via api
## 2) Put job / node in fail state
## 3) Simply fail
#raise Exception("Heckle System Object: add_process_groups: %s" % hec_except)
add_process_groups = exposed(query(add_process_groups))
def get_process_groups(self, specs):
"""get a list of existing allocations"""
#logger.debug( "Heckle System: get_process_groups" )
self._wait()
return self.process_groups.q_get(specs)
get_process_groups = exposed(query(get_process_groups))
def signal_process_groups(self, specs, sig):
"""Free the specified process group (set of allocated nodes)"""
logger.debug(
"Heckle System: signal_process_groups: Specs are %s, sig is %s" %
(specs, sig))
return self.process_groups.q_get(specs, lambda x, y: x.signal(y), sig)
signal_process_groups = exposed(query(signal_process_groups))
def wait_process_groups(self, specs):
"""Remove terminated process groups"""
logger.debug("Heckle System: wait_process_groups; specs are %s" %
specs)
return self.process_groups.q_del(
specs, lambda x, _: self._release_resources(x))
wait_process_groups = exposed(query(wait_process_groups))
#########################################
# Methods for dealing with Process Groups
#########################################
def _start_pg(self, pgp, heckle_res_id, uid):
"""
Populates the process group with its resources
gets node information for nodes in process group
Updates those attributes
Places nodes in the pinging nodes list, to see if they're built
"""
logger.debug("Heckle System: start_pg: PGP is %s" % pgp)
nodelist = pgp.location
for node in nodelist:
node_attributes = self.resources[node]
node_attributes['mac'] = node_attributes['mac'].replace("-", ":")
node_attributes['heckle_res_id'] = heckle_res_id
pgp.resource_attributes[node] = node_attributes._get_dict()
pgp.uid = uid
pgp.pinging_nodes.append(nodelist)
add_process_groups = exposed(query(add_process_groups))
def _check_builds_done(self):
"""
Check to see if the nodes are done building
Starts the process group if all nodes in them are done building
"""
#logger.debug( "heckle: System: Check Build Done: Waiting to Start..." )
#sleep(20)
retval = True
pg_list = [
x for x in self.process_groups.itervalues()
if (len(x.pinging_nodes) > 0)
]
self.resources.update()
for pgp in pg_list:
for nodename in pgp.pinging_nodes:
teststr = self.resources[nodename]['bootstate']
if teststr == "COMPLETED":
logger.debug(
"heckle: System: Check Build Done: Removing node %s...%i pinging nodes left"
% (nodename, len(pgp.pinging_nodes) - 1))
pgp.pinging_nodes.remove(nodename)
elif teststr in ["BOOTING", "", ""]:
logger.debug(
"Heckle System: Check Build Done: Node %s not done yet."
% nodename)
elif teststr == "UNALLOCATED":
raise Exception(
"HIC_SO: _check_builds_done: Node says, 'UNALLOCATED'. Possible build error, or system timed out."
)
elif teststr == "CRITFAIL":
raise Exception(
"HIC_SO: _check_builds_done: Node says, 'CRITFAIL'. It timed out while building."
)
#####################
#### Need to figure a better way to fail gracefully on this one...
#####################
elif teststr == "READY":
raise Exception(
"HIC_SO: _check_builds_done: Node says, 'READY'. The Heckle Reservation is already ready already, skipping pinging."
)
if len(pgp.pinging_nodes) == 0:
logger.debug(
"Heckle System: Check Build Done: No Pinging Nodes left, Start PG Running."
)
pgp.start()
else:
retval = False
return retval
_check_builds_done = automatic(_check_builds_done)
def _wait(self):
"""
Calls the process group container's wait() method
"""
#logger.debug( "Heckle System: wait" )
for pgp in self.process_groups.itervalues():
pgp.wait()
_wait = automatic(_wait)
def _release_resources(self, pgp):
"""
Releases all the Heckle nodes, unreserving them
"""
logger.debug("Heckle System: Release %s" % pgp.location)
#self.resources[pgp.location]['action']='Free'
HICCUP = HeckleConnector()
HICCUP.free_reserved_node(uid=pgp.uid, node_list=pgp.location)
self.resources.free(nodes=pgp.location)
def get_resources(self, specs={}):
"""
Returns a list of names for all the FREE resources (nodes) which match the given specs.
"""
logger.debug("Heckle System: get Resources, specs are %s" % specs)
##################################
### Look at this as a future change
##################################
specs['current reservation'] = 9999999
specs['allocatable'] = 'True'
res_list = self.resources >= specs
logger.debug("Heckle System: get Resources, resources are %s" %
res_list)
return res_list
get_resources = exposed(query(get_resources))
##########################################################
# Methods for interacting with scheduler and queue-manager
##########################################################
def validate_job(self, spec):
"""
Validates a job for submission
-- will the job ever run under the current Heckle configuration?
Steps:
1) Validate Kernel
2) Validate HW
3) Validate Job versus overall
"""
logger.debug("Heckle System: Validate Job: Specs are %s" % spec)
try:
checklist = spec['attrs']
except:
checklist = {}
#del(checklist['action'])
try:
nodecount = spec['nodecount']
except:
nodecount = 1
glossary = self.resources.glossary
dnelist = [] # for attributes which do not exist in glossary
badlist = [] # for attributes in glossary which do not exist
##################################
### Look at this as a future change
### Think: Refresh Resources Info
##################################
#1st step: Are there enough nodes at all?
if nodecount >= self.resources.node_count():
pass
else:
raise Exception(
"Validate Job: Not enough nodes; Requested %s, only have %s in the system."
% (nodecount, self.resources.nodecount()))
for att in checklist:
val = checklist[att]
try:
if val in glossary[att]:
pass
else:
badlist.append("%s:%s" % (att, val)) # Bad attribute
except:
dnelist.append(att) #Attribute does not exist
checklist['current reservation'] = 9999999
checklist['allocatable'] = 'True'
retlist = self.resources >= checklist
retcount = len(retlist)
goodlen = retcount >= nodecount
if goodlen and not badlist and not dnelist:
return spec #Good Job!
else:
retstr = "Validate Job: "
if badlist or dnelist:
if badlist:
restr += "No value for attribute: %s" % badlist
if dnelist:
retstr += "Attributes Do Not Exist: %s" % dnelist
else:
retstr += "Need %s nodes, only have %s nodes: %s" % (
nodecount, retcount, retlist)
raise Exception(retstr)
return spec
validate_job = exposed(validate_job)
def verify_locations(self, location_list):
"""
Makes sure a location list is valid
location list is a list of fully qualified strings of node names
ex: nodename.mcs.anl.gov
"""
logger.debug("heckle: System: Validate Job: Verify Locations")
return location_list in self.resources.glossary
verify_locations = exposed(verify_locations)
def find_job_location(self, job_location_args, end_times):
"""
Finds a group of not-busy nodes in which to run the job
Arguments:
job_location_args -- A list of dictionaries with info about the job
jobid -- string identifier
nodes -- int number of nodes
queue -- string queue name
required -- ??
utility_score -- ??
threshold -- ??
walltime -- ??
attrs -- dictionary of attributes to match against
end_times -- supposed time the job will end
Returns: Dictionary with list of nodes a job can run on, keyed by jobid
"""
logger.debug("heckle: System: find_job_location")
locations = {}
def jobsort(job):
"""Used to sort job list by utility score"""
return job["utility_score"]
job_location_args.sort(key=jobsort)
#Try to match jobs to nodes which can run them
for job in job_location_args:
if "attrs" not in job or job["attrs"] is None:
attrs = {}
else:
attrs = job['attrs']
attrs['current reservation'] = 9999999
attrs['allocatable'] = 'True'
nodecount = int(job['nodes'])
print "Heckle System: Find Job Location: Job is %s" % job
#############################
### Look at this as point of change
### Think: For node in unreserved nodes
### Choose node from list
### Remove node from unreserved nodes
#############################
print "Heckle System: Find Job Location: Free Nodes is %s" % self.resources.getfreenodes(
)
nodelist = (self.resources >= attrs) # get Matching Node
print "Nodelist at this stage is %s" % nodelist
if len(nodelist) >= nodecount:
print "Nodecount = %s" % nodecount
retlist = nodelist[:nodecount]
self.resources.allocate(retlist)
print "Heckle System: Find Job Location: Remaining nodelist is %s" % retlist
else:
raise Exception(
"Heckle System: find_job_locations: Not Enough matching Nodes Available"
)
locations[job["jobid"]] = retlist
print "Locations is now: %s" % locations
logger.info("heckle: find_job_location: locations are %s" % locations)
return locations
find_job_location = exposed(find_job_location)
def find_queue_equivalence_classes(self, reservation_dict,
active_queue_names):
"""
Finds equivalent queues
An equivalent queue is a queue which can run upon the same partition(s)
For now, with one partition (everything!) this is irrelevant.
Returns: equiv= [{'reservations': [], 'queues': ['default']}]
"""
logger.debug("Heckle System: find queue equivalence classes")
equiv = []
#print "Reservation_Dict is: %s" % reservation_dict
#print "Active_queue_names is %s" % active_queue_names
#print "Queue assignments are: %s" % self.queue_assignments
for queue in self.queue_assignments:
# skip queues that aren't running
if not queue in active_queue_names:
continue
found_a_match = False
print "Heckle Queue is %s" % queue
for equ in equiv:
print "Heckle Equ is %s" % equ
if equ['data'].intersection(self.queue_assignments[queue]):
equ['queues'].add(queue)
equ['data'].update(self.queue_assignments[queue])
found_a_match = True
break
if not found_a_match:
equiv.append({
'queues': set([queue]),
'data': set(self.queue_assignments[queue]),
'reservations': set()
})
real_equiv = []
for eq_class in equiv:
found_a_match = False
for equ in real_equiv:
if equ['queues'].intersection(eq_class['queues']):
equ['queues'].update(eq_class['queues'])
equ['data'].update(eq_class['data'])
found_a_match = True
break
if not found_a_match:
real_equiv.append(eq_class)
equiv = real_equiv
for eq_class in equiv:
for res_name in reservation_dict:
for host_name in reservation_dict[res_name].split(":"):
if host_name in eq_class['data']:
eq_class['reservations'].add(res_name)
for key in eq_class:
eq_class[key] = list(eq_class[key])
del eq_class['data']
return equiv
find_queue_equivalence_classes = exposed(find_queue_equivalence_classes)
def get_partitions(self, locations):
"""
Work-around to get the cqadm to run a single job on this system
PRE: locations is a list of dict of strings of possible node names
POST: if good, return locations
if not good, raise exception and list bad nodes
"""
nodelist = self.resources.Glossary.nodelist
logger.debug("Heckle System: get_partitions: raw is are: %s" %
locations)
logger.debug("Heckle System: get_partitions: vals are: %s" % locs)
if locations in nodelist:
return locations
else:
raise Exception(
"heckle: System: get_partition: Bad Locations: %s " %
badlocations)
get_partitions = exposed(get_partitions)
class MessageQueue(Component):
name = "cdbwriter"
implementation = "cdbwriter"
logger = logging.getLogger("Cobalt.Components.cdbwriter")
_configfields = ['user', 'pwd', 'database', 'schema']
_config = ConfigParser.ConfigParser()
_config.read(Cobalt.CONFIG_FILES)
if not config._sections.has_key('cdbwriter'):
logger.error('"cdbwriter" section missing from config file.')
config = _config._sections['cdbwriter']
mfields = [field for field in _configfields if not config.has_key(field)]
if mfields:
logger.error(
"Missing option(s) in cobalt config file [cdbwriter] section: %s" %
(" ".join(mfields)))
sys.exit(1)
def __init__(self, *args, **kwargs):
Component.__init__(self, *args, **kwargs)
self.sync_state = Cobalt.Util.FailureMode("Foreign Data Sync")
self.connected = False
self.msg_queue = []
self.decoder = LogMessageDecoder()
self.overflow = False
self.overflow_filename = None
self.overflow_file = None
self.clearing_overflow = False
self.max_queued = int(get_cdbwriter_config('max_queued_msgs', '-1'))
if self.max_queued <= 0:
logger.info("message queue set to unlimited.")
self.max_queued = None
self.overflow_filename = get_cdbwriter_config(
'overflow_file', None)
if self.overflow_filename == None:
logger.warning(
"No file given to catch maximum messages. Setting queue size to unlimited."
)
self.max_queued = None
def __getstate__(self):
state = {}
state.update(Component.__getstate__(self))
state.update({
'cdbwriter_version': 1,
'msg_queue': self.msg_queue,
'overflow': self.overflow
})
return state
def __setstate__(self, state):
Component.__setstate__(self, state)
self.msg_queue = state['msg_queue']
self.connected = False
self.decoder = LogMessageDecoder()
self.clearing_overflow = False
self.overflow_filename = None
self.overflow_file = None
self.max_queued = int(get_cdbwriter_config('max_queued_msgs', '-1'))
if self.max_queued <= 0:
logger.info("message queue set to unlimited.")
self.max_queued = None
else:
self.overflow_filename = get_cdbwriter_config(
'overflow_file', None)
if self.max_queued and (self.overflow_filename == None):
logger.warning(
"No file given to catch maximum messages. Setting queue size to unlimited."
)
self.max_queued = None
if state.has_key('overflow') and self.max_queued:
self.overflow = state['overflow']
else:
self.overflow = False
def init_database_connection(self):
user = get_cdbwriter_config('user', None)
pwd = get_cdbwriter_config('pwd', None)
database = get_cdbwriter_config('database', None)
schema = get_cdbwriter_config('schema', None)
try:
self.database_writer = DatabaseWriter(database, user, pwd, schema)
except:
#make this a log statement
logging.error("Unable to connect to %s as %s" % (database, user))
self.connected = False
logging.debug(traceback.format_exc())
else:
self.connected = True
def iterate(self):
"""Go through the messages that are sitting on the queue and
load them into the database."""
#if we're not connected, try to reconnect to the database
if not self.connected:
logger.debug("Attempting reconnection.")
self.init_database_connection()
if self.connected and self.overflow:
self.clearing_overflow = True
self.open_overflow('r')
if self.overflow_file:
overflow_queue = [
self.decoder.decode(line) for line in self.overflow_file
]
overflow_queue.extend(self.msg_queue)
self.msg_queue = overflow_queue
self.close_overflow()
self.del_overflow()
self.overflow = False
while self.msg_queue and self.connected:
msg = self.msg_queue[0]
try:
self.database_writer.addMessage(msg)
except db2util.adapterError:
logger.error(
"Error updating databse. Unable to add message due to adapter error. Message dropped."
)
logging.debug(traceback.format_exc())
self.msg_queue.pop(0)
except:
logger.error("Error updating databse. Unable to add message.")
logging.debug(traceback.format_exc())
self.connected = False
#if we were clearing an overflow, here we go again.
if ((self.max_queued != None)
and (len(self.msg_queue) >= self.max_queued)):
self.overflow = True
self.open_overflow('a')
if self.overflow_file != None:
self.queue_to_overflow()
self.close_overflow()
break
else:
#message added
self.msg_queue.pop(0)
self.clearing_overflow = False
iterate = automatic(iterate)
def add_message(self, msg):
#keep the queue from consuming all memory
if ((self.max_queued != None)
and (len(self.msg_queue) >= self.max_queued)
and (not self.clearing_overflow)):
self.overflow = True
self.open_overflow('a')
if self.overflow_file == None:
logger.critical("MESSAGE DROPPED: %s", msg)
else:
self.queue_to_overflow()
self.close_overflow()
#and now queue as normal
msgDict = None
try:
msgDict = self.decoder.decode(msg)
except ValueError:
logger.error("Bad message recieved. Failed to decode string %s" %
msg)
return
except:
logging.debug(traceback.format_exc())
self.msg_queue.append(msgDict)
add_message = exposed(add_message)
def save_me(self):
Component.save(self)
save_me = automatic(save_me)
def open_overflow(self, mode):
try:
self.overflow_file = open(self.overflow_filename, mode)
except:
self.logger.critical(
"Unable to open overflow file! Information to database will be lost!"
)
def close_overflow(self):
if self.overflow and self.overflow_file:
self.overflow_file.close()
self.overflow_file = None
def del_overflow(self):
os.remove(self.overflow_filename)
def queue_to_overflow(self):
elements_written = 0
if len(self.msg_queue) == 0:
return
while self.msg_queue:
msg = self.msg_queue.pop(0)
try:
self.overflow_file.write(
json.dumps(msg, cls=LogMessageEncoder) + '\n')
elements_written += 1
except IOError:
logger.error(
'Could only partially empty queue, %d messages written' %
elements_written)
self.msg_queue.insert(0, msg)
if elements_written > 0:
del self.msg_queue[0:elements_written -
1] #empty the queue of what we have written
return len(self.msg_queue)
class BGSched(Component):
implementation = "bgsched"
name = "scheduler"
logger = logging.getLogger("Cobalt.Components.scheduler")
_configfields = ['utility_file']
_config = ConfigParser.ConfigParser()
print Cobalt.CONFIG_FILES
_config.read(Cobalt.CONFIG_FILES)
if not _config._sections.has_key('bgsched'):
print '''"bgsched" section missing from cobalt config file'''
sys.exit(1)
config = _config._sections['bgsched']
mfields = [field for field in _configfields if not config.has_key(field)]
if mfields:
print "Missing option(s) in cobalt config file [bgsched] section: %s" % (
" ".join(mfields))
sys.exit(1)
if config.get("default_reservation_policy"):
global DEFAULT_RESERVATION_POLICY
DEFAULT_RESERVATION_POLICY = config.get("default_reservation_policy")
def __init__(self, *args, **kwargs):
Component.__init__(self, *args, **kwargs)
self.COMP_QUEUE_MANAGER = "queue-manager"
self.COMP_SYSTEM = "system"
self.reservations = ReservationDict()
self.queues = QueueDict(self.COMP_QUEUE_MANAGER)
self.jobs = JobDict(self.COMP_QUEUE_MANAGER)
self.started_jobs = {}
self.sync_state = Cobalt.Util.FailureMode("Foreign Data Sync")
self.active = True
self.get_current_time = time.time
self.id_gen = IncrID()
global bgsched_id_gen
bgsched_id_gen = self.id_gen
self.cycle_id_gen = IncrID()
global bgsched_cycle_id_gen
bgsched_cycle_id_gen = self.cycle_id_gen
def __getstate__(self):
return {
'reservations': self.reservations,
'version': 1,
'active': self.active,
'next_res_id': self.id_gen.idnum + 1,
'next_cycle_id': self.cycle_id_gen.idnum + 1,
'msg_queue': dbwriter.msg_queue,
'overflow': dbwriter.overflow
}
def __setstate__(self, state):
self.reservations = state['reservations']
if 'active' in state:
self.active = state['active']
else:
self.active = True
self.id_gen = IncrID()
self.id_gen.set(state['next_res_id'])
global bgsched_id_gen
bgsched_id_gen = self.id_gen
self.cycle_id_gen = IncrID()
self.cycle_id_gen.set(state['next_cycle_id'])
global bgsched_cycle_id_gen
bgsched_cycle_id_gen = self.cycle_id_gen
self.queues = QueueDict(self.COMP_QUEUE_MANAGER)
self.jobs = JobDict(self.COMP_QUEUE_MANAGER)
self.started_jobs = {}
self.sync_state = Cobalt.Util.FailureMode("Foreign Data Sync")
self.get_current_time = time.time
self.lock = threading.Lock()
self.statistics = Statistics()
if state.has_key('msg_queue'):
dbwriter.msg_queue = state['msg_queue']
if state.has_key('overflow') and (dbwriter.max_queued != None):
dbwriter.overflow = state['overflow']
# order the jobs with biggest utility first
def utilitycmp(self, job1, job2):
return -cmp(job1.score, job2.score)
def prioritycmp(self, job1, job2):
"""Compare 2 jobs first using queue priority and then first-in, first-out."""
val = cmp(self.queues[job1.queue].priority,
self.queues[job2.queue].priority)
if val == 0:
return self.fifocmp(job1, job2)
else:
# we want the higher priority first
return -val
def fifocmp(self, job1, job2):
"""Compare 2 jobs for first-in, first-out."""
def fifo_value(job):
if job.index is not None:
return int(job.index)
else:
return job.jobid
# Implement some simple variations on FIFO scheduling
# within a particular queue, based on queue policy
fifoval = cmp(fifo_value(job1), fifo_value(job2))
if (job1.queue == job2.queue):
qpolicy = self.queues[job1.queue].policy
sizeval = cmp(int(job1.nodes), int(job2.nodes))
wtimeval = cmp(int(job1.walltime), int(job2.walltime))
if (qpolicy == 'largest-first' and sizeval):
return -sizeval
elif (qpolicy == 'smallest-first' and sizeval):
return sizeval
elif (qpolicy == 'longest-first' and wtimeval):
return -wtimeval
elif (qpolicy == 'shortest-first' and wtimeval):
return wtimeval
else:
return fifoval
else:
return fifoval
return cmp(fifo_value(job1), fifo_value(job2))
def save_me(self):
Component.save(self)
save_me = automatic(save_me)
#user_name in this context is the user setting/modifying the res.
def add_reservations(self, specs, user_name):
self.logger.info("%s adding reservation: %r" % (user_name, specs))
added_reservations = self.reservations.q_add(specs)
for added_reservation in added_reservations:
self.logger.info("Res %s/%s: %s adding reservation: %r" %
(added_reservation.res_id,
added_reservation.cycle_id, user_name, specs))
dbwriter.log_to_db(user_name, "creating", "reservation",
added_reservation)
return added_reservations
add_reservations = exposed(query(add_reservations))
def del_reservations(self, specs, user_name):
self.logger.info("%s releasing reservation: %r" % (user_name, specs))
del_reservations = self.reservations.q_del(specs)
for del_reservation in del_reservations:
self.logger.info("Res %s/%s/: %s releasing reservation: %r" %
(del_reservation.res_id, del_reservation.cycle_id,
user_name, specs))
#dbwriter.log_to_db(user_name, "ending", "reservation", del_reservation)
return del_reservations
del_reservations = exposed(query(del_reservations))
def get_reservations(self, specs):
return self.reservations.q_get(specs)
get_reservations = exposed(query(get_reservations))
def set_reservations(self, specs, updates, user_name):
log_str = "%s modifying reservation: %r with updates %r" % (
user_name, specs, updates)
self.logger.info(log_str)
#handle defers as a special case: have to log these, and not drop a mod record.
def _set_reservations(res, newattr):
res.update(newattr)
updates['__cmd_user'] = user_name
mod_reservations = self.reservations.q_get(specs, _set_reservations,
updates)
for mod_reservation in mod_reservations:
self.logger.info("Res %s/%s: %s modifying reservation: %r" %
(mod_reservation.res_id, mod_reservation.cycle_id,
user_name, specs))
return mod_reservations
set_reservations = exposed(query(set_reservations))
def release_reservations(self, specs, user_name):
self.logger.info("%s requested release of reservation: %r" %
(user_name, specs))
self.logger.info("%s releasing reservation: %r" % (user_name, specs))
rel_res = self.get_reservations(specs)
for res in rel_res:
dbwriter.log_to_db(user_name, "released", "reservation", res)
del_reservations = self.reservations.q_del(specs)
for del_reservation in del_reservations:
self.logger.info("Res %s/%s/: %s releasing reservation: %r" %
(del_reservation.res_id, del_reservation.cycle_id,
user_name, specs))
return del_reservations
release_reservations = exposed(query(release_reservations))
def check_reservations(self):
ret = ""
reservations = self.reservations.values()
for i in range(len(reservations)):
for j in range(i + 1, len(reservations)):
# if at least one reservation is cyclic, we want *that* reservation to be the one getting its overlaps method
# called
if reservations[i].cycle is not None:
res1 = reservations[i]
res2 = reservations[j]
else:
res1 = reservations[j]
res2 = reservations[i]
# we subtract a little bit because the overlaps method isn't really meant to do this
# it will report warnings when one reservation starts at the same time another ends
if res1.overlaps(res2.start, res2.duration - 0.00001):
# now we need to check for overlap in space
results = ComponentProxy(self.COMP_SYSTEM).get_partitions(
[{
'name': p,
'children': '*',
'parents': '*'
} for p in res2.partitions.split(":")])
for p in res1.partitions.split(":"):
for r in results:
if p == r['name'] or p in r['children'] or p in r[
'parents']:
ret += "Warning: reservation '%s' overlaps reservation '%s'\n" % (
res1.name, res2.name)
return ret
check_reservations = exposed(check_reservations)
def sync_data(self):
started = self.get_current_time()
for item in [self.jobs, self.queues]:
try:
item.Sync()
except (ComponentLookupError, xmlrpclib.Fault):
# the ForeignDataDicts already include FailureMode stuff
pass
# print "took %f seconds for sync_data" % (time.time() - started, )
#sync_data = automatic(sync_data)
def _run_reservation_jobs(self, reservations_cache):
# handle each reservation separately, as they shouldn't be competing for resources
for cur_res in reservations_cache.itervalues():
#print "trying to run res jobs in", cur_res.name, self.started_jobs
queue = cur_res.queue
if not (self.queues.has_key(queue)
and self.queues[queue].state == 'running'):
continue
temp_jobs = self.jobs.q_get([{
'is_runnable': True,
'queue': queue
}])
active_jobs = []
for j in temp_jobs:
if not self.started_jobs.has_key(
j.jobid) and cur_res.job_within_reservation(j):
active_jobs.append(j)
if not active_jobs:
continue
active_jobs.sort(self.utilitycmp)
job_location_args = []
for job in active_jobs:
job_location_args.append({
'jobid':
str(job.jobid),
'nodes':
job.nodes,
'queue':
job.queue,
'required':
cur_res.partitions.split(":"),
'utility_score':
job.score,
'walltime':
job.walltime,
'attrs':
job.attrs,
'user':
job.user,
})
# there's no backfilling in reservations
try:
best_partition_dict = ComponentProxy(
self.COMP_SYSTEM).find_job_location(job_location_args, [])
except:
self.logger.error("failed to connect to system component")
best_partition_dict = {}
for jobid in best_partition_dict:
job = self.jobs[int(jobid)]
self._start_job(job, best_partition_dict[jobid],
{str(job.jobid): cur_res.res_id})
def _start_job(self, job, partition_list, resid=None):
"""Get the queue manager to start a job."""
cqm = ComponentProxy(self.COMP_QUEUE_MANAGER)
try:
self.logger.info("trying to start job %d on partition %r" %
(job.jobid, partition_list))
cqm.run_jobs([{
'tag': "job",
'jobid': job.jobid
}], partition_list, None, resid)
except ComponentLookupError:
self.logger.error("failed to connect to queue manager")
return
self.started_jobs[job.jobid] = self.get_current_time()
def schedule_jobs(self):
'''look at the queued jobs, and decide which ones to start'''
started_scheduling = self.get_current_time()
if not self.active:
return
self.sync_data()
# if we're missing information, don't bother trying to schedule jobs
if not (self.queues.__oserror__.status
and self.jobs.__oserror__.status):
self.sync_state.Fail()
return
self.sync_state.Pass()
self.lock.acquire()
try:
# cleanup any reservations which have expired
for res in self.reservations.values():
if res.is_over():
self.logger.info("reservation %s has ended; removing" %
(res.name))
self.logger.info("Res %s/%s: Ending reservation: %r" %
(res.res_id, res.cycle_id, res.name))
#dbwriter.log_to_db(None, "ending", "reservation",
# res)
del_reservations = self.reservations.q_del([{
'name':
res.name
}])
reservations_cache = self.reservations.copy()
except:
# just to make sure we don't keep the lock forever
self.logger.error("error in schedule_jobs", exc_info=True)
self.lock.release()
# clean up the started_jobs cached data
# TODO: Make this tunable.
now = self.get_current_time()
for job_name in self.started_jobs.keys():
if (now - self.started_jobs[job_name]) > 60:
del self.started_jobs[job_name]
active_queues = []
spruce_queues = []
res_queues = set()
for item in reservations_cache.q_get([{'queue': '*'}]):
if self.queues.has_key(item.queue):
if self.queues[item.queue].state == 'running':
res_queues.add(item.queue)
for queue in self.queues.itervalues():
if queue.name not in res_queues and queue.state == 'running':
if queue.policy == "high_prio":
spruce_queues.append(queue)
else:
active_queues.append(queue)
# handle the reservation jobs that might be ready to go
self._run_reservation_jobs(reservations_cache)
# figure out stuff about queue equivalence classes
if __running_mode__ == "simulation":
equiv = [{'reservations': [], 'queues': ['default']}]
else:
res_info = {}
for cur_res in reservations_cache.values():
res_info[cur_res.name] = cur_res.partitions
try:
equiv = ComponentProxy(
self.COMP_SYSTEM).find_queue_equivalence_classes(
res_info,
[q.name for q in active_queues + spruce_queues])
except:
self.logger.error("failed to connect to system component")
return
for eq_class in equiv:
# recall that is_runnable is True for certain types of holds
temp_jobs = self.jobs.q_get([{'is_runnable':True, 'queue':queue.name} for queue in active_queues \
if queue.name in eq_class['queues']])
active_jobs = []
for j in temp_jobs:
if not self.started_jobs.has_key(j.jobid):
active_jobs.append(j)
temp_jobs = self.jobs.q_get([{'is_runnable':True, 'queue':queue.name} for queue in spruce_queues \
if queue.name in eq_class['queues']])
spruce_jobs = []
for j in temp_jobs:
if not self.started_jobs.has_key(j.jobid):
spruce_jobs.append(j)
# if there are any pending jobs in high_prio queues, those are the only ones that can start
if spruce_jobs:
active_jobs = spruce_jobs
# get the cutoff time for backfilling
#
# BRT: should we use 'has_resources' or 'is_active'? has_resources returns to false once the resource epilogue
# scripts have finished running while is_active only returns to false once the job (not just the running task) has
# completely terminated. the difference is likely to be slight unless the job epilogue scripts are heavy weight.
temp_jobs = [
job for job in self.jobs.q_get([{
'has_resources': True
}]) if job.queue in eq_class['queues']
]
end_times = []
for job in temp_jobs:
# take the max so that jobs which have gone overtime and are being killed
# continue to cast a small backfilling shadow (we need this for the case
# that the final job in a drained partition runs overtime -- which otherwise
# allows things to be backfilled into the drained partition)
##*AdjEst*
if running_job_walltime_prediction:
runtime_estimate = float(job.walltime_p)
else:
runtime_estimate = float(job.walltime)
end_time = max(
float(job.starttime) + 60 * runtime_estimate, now + 5 * 60)
end_times.append([job.location, end_time])
for res_name in eq_class['reservations']:
cur_res = reservations_cache[res_name]
if not cur_res.cycle:
end_time = float(cur_res.start) + float(cur_res.duration)
else:
done_after = float(cur_res.duration) - (
(now - float(cur_res.start)) % float(cur_res.cycle))
if done_after < 0:
done_after += cur_res.cycle
end_time = now + done_after
if cur_res.is_active():
for part_name in cur_res.partitions.split(":"):
end_times.append([[part_name], end_time])
if not active_jobs:
continue
active_jobs.sort(self.utilitycmp)
# now smoosh lots of data together to be passed to the allocator in the system component
job_location_args = []
for job in active_jobs:
forbidden_locations = set()
for res_name in eq_class['reservations']:
cur_res = reservations_cache[res_name]
if cur_res.overlaps(self.get_current_time(),
60 * float(job.walltime) + SLOP_TIME):
forbidden_locations.update(
cur_res.partitions.split(":"))
job_location_args.append({
'jobid': str(job.jobid),
'nodes': job.nodes,
'queue': job.queue,
'forbidden': list(forbidden_locations),
'utility_score': job.score,
'walltime': job.walltime,
'walltime_p': job.walltime_p, #*AdjEst*
'attrs': job.attrs,
'user': job.user,
})
try:
best_partition_dict = ComponentProxy(
self.COMP_SYSTEM).find_job_location(
job_location_args, end_times)
except:
self.logger.error("failed to connect to system component",
exc_info=True)
best_partition_dict = {}
for jobid in best_partition_dict:
job = self.jobs[int(jobid)]
self._start_job(job, best_partition_dict[jobid])
# print "took %f seconds for scheduling loop" % (time.time() - started_scheduling, )
schedule_jobs = locking(automatic(schedule_jobs))
def get_resid(self, queue_name):
return None
get_resid = exposed(get_resid)
def enable(self, user_name):
"""Enable scheduling"""
self.logger.info("%s enabling scheduling", user_name)
self.active = True
enable = exposed(enable)
def disable(self, user_name):
"""Disable scheduling"""
self.logger.info("%s disabling scheduling", user_name)
self.active = False
disable = exposed(disable)
def set_res_id(self, id_num):
"""Set the reservation id number."""
self.id_gen.set(id_num)
logger.info("Reset res_id generator to %s." % id_num)
set_res_id = exposed(set_res_id)
def set_cycle_id(self, id_num):
"""Set the cycle id number."""
self.cycle_id_gen.set(id_num)
logger.info("Reset cycle_id generator to %s." % id_num)
set_cycle_id = exposed(set_cycle_id)
def force_res_id(self, id_num):
"""Override the id-generator and change the resid to id_num"""
self.id_gen.idnum = id_num - 1
logger.warning("Forced res_id generator to %s." % id_num)
force_res_id = exposed(force_res_id)
def force_cycle_id(self, id_num):
"""Override the id-generator and change the cycleid to id_num"""
self.cycle_id_gen.idnum = id_num - 1
logger.warning("Forced cycle_id generator to %s." % id_num)
force_cycle_id = exposed(force_cycle_id)
def get_next_res_id(self):
"""Get what the next resid number would be"""
return self.id_gen.idnum + 1
get_next_res_id = exposed(get_next_res_id)
def get_next_cycle_id(self):
"""get what the next cycleid number would be"""
return self.cycle_id_gen.idnum + 1
get_next_cycle_id = exposed(get_next_cycle_id)
def __flush_msg_queue(self):
"""Send queued messages to the database-writer component"""
dbwriter.flush_queue()
__flush_msg_queue = automatic(
__flush_msg_queue, float(get_bgsched_config('db_flush_interval', 10)))
class BBSystem(Component):
"""Breadboard system component.
Methods:
add_process_groups -- allocates nodes
get_process_groups -- get process groups based on specs
signal_process_groups -- signal a process group
wait_process_groups -- removed process groups based on specs
"""
name = "system"
implementation = "Breadboard"
def __init__(self, *args, **kwargs):
Component.__init__(self, *args, **kwargs)
self.resources = ResourceDict()
self.process_groups = ProcessGroupDict()
self.process_groups.item_cls = BBProcessGroup
self.queue_assignments = {}
self.queue_assignments["default"] = sets.Set(self.resources)
#####################
# Main set of methods
#####################
def add_process_groups(self, specs):
"""Allocate nodes and add the list of those allocated to the PGDict"""
return self.process_groups.q_add(specs, lambda x, _: self._start_pg(x))
add_process_groups = exposed(query(add_process_groups))
def get_process_groups(self, specs):
"""Get a list of existing allocations"""
self._wait()
return self.process_groups.q_get(specs)
get_process_groups = exposed(query(get_process_groups))
def signal_process_groups(self, specs, sig):
"""Free the specified process group (set of allocated nodes)"""
return self.process_groups.q_get(specs, lambda x, y: x.signal(y), sig)
signal_process_groups = exposed(query(signal_process_groups))
def wait_process_groups(self, specs):
"""Remove terminated process groups"""
return self.process_groups.q_del(
specs, lambda x, _: self._release_resources(x))
wait_process_groups = exposed(query(wait_process_groups))
#########################################
# Methods for dealing with Process Groups
#########################################
def _start_pg(self, pgp):
"""Starts a process group by initiating building/rebooting nodes"""
###########################################
### The following is for back-compatibility
### with bballoc (bbtools) until breadboard
### is switched entirely to run on cobalt
###########################################
bbdata = bblib.BBConfig("/etc/bb.xml")
bbdata.SetNodeAttr(pgp.location, {
"user": pgp.user,
"state": "Cobalt",
"comment": "Managed by Cobalt"
})
bbdata.WriteAndClose()
###########################################
### End of back-compatibility
###########################################
specs = [{"name": name, "attributes": "*"} for name in pgp.location]
resources = self.get_resources(specs)
action = "build-%s" % pgp.kernel
for res in resources:
# Set build action for each resource
specs = [{"name": res.name}]
new_attrs = {"attributes": {"action": action}}
self.set_attributes(specs, new_attrs)
mac = res.attributes["mac"]
linkname = "/tftpboot/pxelinux.cfg/01-%s" \
% mac.replace(":", "-").lower()
if os.readlink(linkname) == action:
continue
os.unlink(linkname)
os.symlink(action, linkname)
for res in resources:
# Cycle power
os.system("/usr/sbin/pm -c %s" % res.name)
# Add resource to list of building nodes
pgp.building_nodes.append(res.name)
def _check_builds_done(self):
"""Checks if nodes are done building for each process group and
scripts can begin running"""
for pgp in [
x for x in self.process_groups.itervalues()
if (len(x.building_nodes) > 0 or len(x.pinging_nodes) > 0)
]:
specs = [{
"name": name,
"attributes": "*"
} for name in pgp.building_nodes]
building = self.get_resources(specs)
build_action = "build-%s" % pgp.kernel
for node in building:
if node.attributes["action"] != build_action:
pgp.building_nodes.remove(node.name)
pgp.pinging_nodes.append(node.name)
for nodename in pgp.pinging_nodes:
if os.system("/bin/ping -c 1 -W 1 %s > /dev/null" % nodename):
continue
pgp.pinging_nodes.remove(nodename)
if len(pgp.building_nodes) == 0 and len(pgp.pinging_nodes) == 0:
pgp.start()
_check_builds_done = automatic(_check_builds_done)
def node_done_building(self, node):
"""Sets a node as done building
Arguments:
node -- string name of node that is done building
Returns: nothing
"""
specs = [{"name": node, "attributes": "*"}]
nodedata = self.get_resources(specs)
if len(nodedata) > 0:
buildimage = nodedata[0].attributes["action"]
nodedata[0].attributes["action"] = buildimage.replace(
"build-", "boot-")
node_done_building = exposed(node_done_building)
def _wait(self):
"""Calls the process group container's wait() method"""
for pgp in self.process_groups.itervalues():
pgp.wait()
_wait = automatic(_wait)
def _release_resources(self, pgp):
"""Releases the resources held by a process group"""
os.system("/usr/sbin/pm -0 %s" % " ".join(pgp.location))
specs = [{"name": name} for name in pgp.location]
new_attrs = {"state": "idle"}
self.set_attributes(specs, new_attrs)
###########################################
### The following is for back-compatibility
### with bballoc (bbtools) until breadboard
### is switched entirely to run on cobalt
###########################################
bbdata = bblib.BBConfig("/etc/bb.xml")
bbdata.SetNodeAttr(pgp.location, {"user": "******"})
bbdata.WriteAndClose()
###########################################
### End of back-compatibility
###########################################
####################################
# Methods for dealing with resources
####################################
def add_resources(self, specs):
"""Add a resource to this system
Arguments:
specs -- A list of dictionaries with the attributes for the resources
Returns: list of values added
"""
try:
ret = self.resources.q_add(specs)
for res in ret:
self.queue_assignments["default"].add(res)
except KeyError:
ret = "KeyError"
return ret
add_resources = exposed(query(add_resources))
def remove_resources(self, specs):
"""Remove a resource from this system
Arguments:
specs -- A list of dictionaries with the attributes to pick which
resources to remove
Returns: list of resources removed
"""
ret = self.resources.q_del(specs)
for res in ret:
self.queue_assignments["default"].discard(res)
return ret
remove_resources = exposed(remove_resources)
def get_resources(self, specs):
"""Returns a list of all the resources for this system matching the
given specs (list of dictionaries)"""
return self.resources.q_get(specs)
get_resources = exposed(query(get_resources))
def set_attributes(self, specs, newattrs):
"""Sets an attribute in specified resources
Arguments:
specs -- list of dictionaries with resource attributes to match
newattrs -- a dictionary with key:val pairs of attributes to set
Returns: a list of the changed resources
"""
return self.resources.q_get(
specs,
lambda x, y: [set_attr(x, key, val) for key, val in y.iteritems()],
newattrs)
set_attributes = exposed(query(set_attributes))
def remove_attributes(self, specs, attrs):
"""Removes other attributes in specified resources
Arguments:
specs -- list of dictionaries with resource attributes to match
attrs -- list of names of attributes to remove from resource.attributes
Returns: a list of the changed resources
"""
return self.resources.q_get(
specs, lambda x, y: [rem_attr(x, key) for key in y], attrs)
remove_attributes = exposed(query(remove_attributes))
##########################################################
# Methods for interacting with scheduler and queue-manager
##########################################################
def validate_job(self, spec):
"""Validate a job for submission
Arguments:
spec -- job specification dictionary
"""
max_nodes = len(
self.get_resources([{
"name": "*",
"functional": True,
"scheduled": True
}]))
try:
spec["nodecount"] = int(spec["nodecount"])
except ValueError:
raise JobValidationError("Non-integer node count")
if not 0 < spec["nodecount"] <= max_nodes:
raise JobValidationError("Node count out of realistic range")
if float(spec["time"]) < 15:
raise JobValidationError("Walltime less than minimum 15 minutes")
if "kernel" in spec:
if not (os.path.exists(
"/tftpboot/pxelinux.cfg/build-%s" % spec["kernel"])
and os.path.exists(
"/tftpboot/pxelinux.cfg/boot-%s" % spec["kernel"])):
raise JobValidationError(
("Specified image %s (from -k " +
"'kernel' flag does not exist") % spec["kernel"])
if "attrs" in spec:
matched_res = self.resources.get_attr_matched_resources(
[{
"name": "*",
"functional": True,
"scheduled": True,
"attributes": "*"
}], spec["attrs"])
if spec["nodecount"] > len(matched_res):
raise JobValidationError("Not enough nodes exist with the " +
"attributes to match")
return spec
validate_job = exposed(validate_job)
def verify_locations(self, location_list):
"""Makes sure a 'location string' is valid"""
resources = self.get_resources([{"name": r} for r in location_list])
return [r.name for r in resources]
verify_locations = exposed(verify_locations)
def find_job_location(self, job_location_args, end_times):
"""Finds and reserves a list of nodes in which the job can run
Arguments:
job_location_args -- A list of dictionaries with info about the job
jobid -- string identifier
nodes -- int number of nodes
queue -- string queue name
required -- ??
utility_score -- ??
threshold -- ??
walltime -- ??
attrs -- dictionary of attributes to match against
end_times -- supposed time the job will end
Returns: Dictionary with list of nodes a job can run on, keyed by jobid
"""
locations = {}
def jobsort(job):
"""Used to sort job list by utility score"""
return job["utility_score"]
job_location_args.sort(key=jobsort)
for job in job_location_args:
specs = [{
"name": "*",
"functional": True,
"scheduled": True,
"state": "idle",
"attributes": "*"
}]
if "attrs" not in job or job["attrs"] is None:
job["attrs"] = {}
resources = self.resources.get_attr_matched_resources(
specs, job["attrs"])
if len(resources) < job["nodes"]:
#Can't schedule job - not enough resources
continue
def namesort(res):
"""Used to sort resources by name"""
return res.name
resources.sort(key=namesort)
used_resources = resources[:job["nodes"]]
for res in used_resources:
res.state = "busy"
locations[job["jobid"]] = [r.name for r in used_resources]
return locations
find_job_location = exposed(find_job_location)
def find_queue_equivalence_classes(self, reservation_dict,
active_queue_names):
"""Finds equivalent queues"""
equiv = []
for queue in self.queue_assignments:
# skip queues that aren't running
if not queue in active_queue_names:
continue
found_a_match = False
for equ in equiv:
if equ['data'].intersection(self.queue_assignments[queue]):
equ['queues'].add(queue)
equ['data'].update(self.queue_assignments[queue])
found_a_match = True
break
if not found_a_match:
equiv.append({
'queues': set([queue]),
'data': set(self.queue_assignments[queue]),
'reservations': set()
})
real_equiv = []
for eq_class in equiv:
found_a_match = False
for equ in real_equiv:
if equ['queues'].intersection(eq_class['queues']):
equ['queues'].update(eq_class['queues'])
equ['data'].update(eq_class['data'])
found_a_match = True
break
if not found_a_match:
real_equiv.append(eq_class)
equiv = real_equiv
for eq_class in equiv:
for res_name in reservation_dict:
for host_name in reservation_dict[res_name].split(":"):
if host_name in eq_class['data']:
eq_class['reservations'].add(res_name)
for key in eq_class:
eq_class[key] = list(eq_class[key])
del eq_class['data']
return equiv
find_queue_equivalence_classes = exposed(find_queue_equivalence_classes)
class BGSystem(BGBaseSystem):
"""Blue Gene system component.
Methods:
configure -- load partitions from the bridge API
add_process_groups -- add (start) an mpirun process on the system (exposed, ~query)
get_process_groups -- retrieve mpirun processes (exposed, query)
wait_process_groups -- get process groups that have exited, and remove them from the system (exposed, query)
signal_process_groups -- send a signal to the head process of the specified process groups (exposed, query)
update_partition_state -- update partition state from the bridge API (runs as a thread)
"""
name = "system"
implementation = "bgsystem"
logger = logger
_configfields = ['diag_script_location', 'diag_log_file', 'kernel']
_config = ConfigParser.ConfigParser()
_config.read(Cobalt.CONFIG_FILES)
if not _config._sections.has_key('bgsystem'):
print '''"bgsystem" section missing from cobalt config file'''
sys.exit(1)
config = _config._sections['bgsystem']
mfields = [field for field in _configfields if not config.has_key(field)]
if mfields:
print "Missing option(s) in cobalt config file [bgsystem] section: %s" % (
" ".join(mfields))
sys.exit(1)
if config.get('kernel') == "true":
_kernel_configfields = ['bootprofiles', 'partitionboot']
mfields = [
field for field in _kernel_configfields
if not config.has_key(field)
]
if mfields:
print "Missing option(s) in cobalt config file [bgsystem] section: %s" % (
" ".join(mfields))
sys.exit(1)
def __init__(self, *args, **kwargs):
BGBaseSystem.__init__(self, *args, **kwargs)
sys.setrecursionlimit(5000)
self.process_groups.item_cls = BGProcessGroup
self.diag_pids = dict()
self.configure()
# initiate the process before starting any threads
thread.start_new_thread(self.update_partition_state, tuple())
def __getstate__(self):
flags = {}
for part in self._partitions.values():
sched = None
func = None
queue = None
if hasattr(part, 'scheduled'):
sched = part.scheduled
if hasattr(part, 'functional'):
func = part.functional
if hasattr(part, 'queue'):
queue = part.queue
flags[part.name] = (sched, func, queue)
return {
'managed_partitions': self._managed_partitions,
'version': 1,
'partition_flags': flags
}
def __setstate__(self, state):
sys.setrecursionlimit(5000)
self._managed_partitions = state['managed_partitions']
self._partitions = PartitionDict()
self.process_groups = BGProcessGroupDict()
self.process_groups.item_cls = BGProcessGroup
self.node_card_cache = dict()
self._partitions_lock = thread.allocate_lock()
self.pending_diags = dict()
self.failed_diags = list()
self.diag_pids = dict()
self.pending_script_waits = sets.Set()
self.bridge_in_error = False
self.cached_partitions = None
self.offline_partitions = []
self.configure()
if 'partition_flags' in state:
for pname, flags in state['partition_flags'].items():
if pname in self._partitions:
self._partitions[pname].scheduled = flags[0]
self._partitions[pname].functional = flags[1]
self._partitions[pname].queue = flags[2]
else:
logger.info("Partition %s is no longer defined" % pname)
self.update_relatives()
# initiate the process before starting any threads
thread.start_new_thread(self.update_partition_state, tuple())
self.lock = threading.Lock()
self.statistics = Statistics()
def save_me(self):
Component.save(self)
save_me = automatic(save_me)
def _get_node_card(self, name, state):
if not self.node_card_cache.has_key(name):
self.node_card_cache[name] = NodeCard(name, state)
return self.node_card_cache[name]
def _new_partition_dict(self, partition_def, bp_cache={}):
# that 32 is not really constant -- it needs to either be read from cobalt.conf or from the bridge API
NODES_PER_NODECARD = 32
node_list = []
if partition_def.small:
bp_name = partition_def.base_partitions[0].id
for nc in partition_def._node_cards:
node_list.append(
self._get_node_card(bp_name + "-" + nc.id, nc.state))
else:
try:
for bp in partition_def.base_partitions:
if bp.id not in bp_cache:
bp_cache[bp.id] = []
for nc in Cobalt.bridge.NodeCardList.by_base_partition(
bp):
bp_cache[bp.id].append(
self._get_node_card(bp.id + "-" + nc.id,
nc.state))
node_list += bp_cache[bp.id]
except BridgeException:
print "Error communicating with the bridge during initial config. Terminating."
sys.exit(1)
d = dict(
name=partition_def.id,
queue="default",
size=NODES_PER_NODECARD * len(node_list),
bridge_partition=partition_def,
node_cards=node_list,
switches=[s.id for s in partition_def.switches],
state=_get_state(partition_def),
)
return d
def _detect_wiring_deps(self, partition, wiring_cache={}):
def _kernel():
s2 = sets.Set(p.switches)
if s1.intersection(s2):
p._wiring_conflicts.add(partition.name)
partition._wiring_conflicts.add(p.name)
self.logger.debug("%s and %s havening problems" %
(partition.name, p.name))
s1 = sets.Set(partition.switches)
if wiring_cache.has_key(partition.size):
for p in wiring_cache[partition.size]:
if partition.name != p.name:
_kernel()
else:
wiring_cache[partition.size] = [partition]
for p in self._partitions.values():
if p.size == partition.size and partition.name != p.name:
wiring_cache[partition.size].append(p)
_kernel()
def configure(self):
"""Read partition data from the bridge."""
self.logger.info("configure()")
try:
system_def = Cobalt.bridge.PartitionList.by_filter()
except BridgeException:
print "Error communicating with the bridge during initial config. Terminating."
sys.exit(1)
# initialize a new partition dict with all partitions
#
partitions = PartitionDict()
tmp_list = []
wiring_cache = {}
bp_cache = {}
for partition_def in system_def:
tmp_list.append(self._new_partition_dict(partition_def, bp_cache))
partitions.q_add(tmp_list)
# update object state
self._partitions.clear()
self._partitions.update(partitions)
# find the wiring deps
start = time.time()
for p in self._partitions.values():
self._detect_wiring_deps(p, wiring_cache)
end = time.time()
self.logger.info("took %f seconds to find wiring deps" % (end - start))
# update state information
for p in self._partitions.values():
if p.state != "busy":
for nc in p.node_cards:
if nc.used_by:
p.state = "blocked (%s)" % nc.used_by
break
for dep_name in p._wiring_conflicts:
if self._partitions[dep_name].state == "busy":
p.state = "blocked-wiring (%s)" % dep_name
break
def update_partition_state(self):
"""Use the quicker bridge method that doesn't return nodecard information to update the states of the partitions"""
def _start_partition_cleanup(p):
self.logger.info("partition %s: marking partition for cleaning",
p.name)
p.cleanup_pending = True
partitions_cleanup.append(p)
_set_partition_cleanup_state(p)
p.reserved_until = False
p.reserved_by = None
p.used_by = None
def _set_partition_cleanup_state(p):
p.state = "cleanup"
for part in p._children:
if part.bridge_partition.state == "RM_PARTITION_FREE":
part.state = "blocked (%s)" % (p.name, )
else:
part.state = "cleanup"
for part in p._parents:
if part.state == "idle":
part.state = "blocked (%s)" % (p.name, )
while True:
try:
system_def = Cobalt.bridge.PartitionList.info_by_filter()
except BridgeException:
self.logger.error(
"Error communicating with the bridge to update partition state information."
)
self.bridge_in_error = True
time.sleep(5) # wait a little bit...
continue # then try again
try:
bg_object = Cobalt.bridge.BlueGene.by_serial()
for bp in bg_object.base_partitions:
for nc in Cobalt.bridge.NodeCardList.by_base_partition(bp):
self.node_card_cache[bp.id + "-" +
nc.id].state = nc.state
except:
self.logger.error(
"Error communicating with the bridge to update nodecard state information."
)
self.bridge_in_error = True
time.sleep(5) # wait a little bit...
continue # then try again
self.bridge_in_error = False
busted_switches = []
for s in bg_object.switches:
if s.state != "RM_SWITCH_UP":
busted_switches.append(s.id)
# set all of the nodecards to not busy
for nc in self.node_card_cache.values():
nc.used_by = ''
# update the state of each partition
self._partitions_lock.acquire()
now = time.time()
partitions_cleanup = []
self.offline_partitions = []
missing_partitions = set(self._partitions.keys())
new_partitions = []
try:
for partition in system_def:
missing_partitions.discard(partition.id)
if self._partitions.has_key(partition.id):
p = self._partitions[partition.id]
p.state = _get_state(partition)
p.bridge_partition = partition
p._update_node_cards()
if p.reserved_until and now > p.reserved_until:
p.reserved_until = False
p.reserved_by = None
else:
new_partitions.append(partition)
# remove the missing partitions and their wiring relations
for pname in missing_partitions:
self.logger.info("missing partition removed: %s", pname)
p = self._partitions[pname]
for dep_name in p._wiring_conflicts:
self.logger.debug(
"removing wiring dependency from: %s", dep_name)
self._partitions[dep_name]._wiring_conflicts.discard(
p.name)
if p.name in self._managed_partitions:
self._managed_partitions.discard(p.name)
del self._partitions[p.name]
bp_cache = {}
wiring_cache = {}
# throttle the adding of new partitions so updating of
# machine state doesn't get bogged down
for partition in new_partitions[:8]:
self.logger.info("new partition found: %s", partition.id)
bridge_p = Cobalt.bridge.Partition.by_id(partition.id)
self._partitions.q_add(
[self._new_partition_dict(bridge_p, bp_cache)])
p = self._partitions[bridge_p.id]
p.bridge_partition = partition
self._detect_wiring_deps(p, wiring_cache)
# if partitions were added or removed, then update the relationships between partitions
if len(missing_partitions) > 0 or len(new_partitions) > 0:
self.update_relatives()
for p in self._partitions.values():
if p.cleanup_pending:
if p.used_by:
# if the partition has a pending cleanup request, then set the state so that cleanup will be
# performed
_start_partition_cleanup(p)
else:
# if the cleanup has already been initiated, then see how it's going
busy = []
parts = list(p._all_children)
parts.append(p)
for part in parts:
if part.bridge_partition.state != "RM_PARTITION_FREE":
busy.append(part.name)
if len(busy) > 0:
_set_partition_cleanup_state(p)
self.logger.info(
"partition %s: still cleaning; busy partition(s): %s",
p.name, ", ".join(busy))
else:
p.cleanup_pending = False
self.logger.info(
"partition %s: cleaning complete", p.name)
if p.state == "busy":
# when the partition becomes busy, if a script job isn't reserving it, then release the reservation
if not p.reserved_by:
p.reserved_until = False
elif p.state != "cleanup":
if p.reserved_until:
p.state = "allocated"
for part in p._parents:
if part.state == "idle":
part.state = "blocked (%s)" % (p.name, )
for part in p._children:
if part.state == "idle":
part.state = "blocked (%s)" % (p.name, )
elif p.bridge_partition.state == "RM_PARTITION_FREE" and p.used_by:
# if the job assigned to the partition has completed, then set the state so that cleanup will be
# performed
_start_partition_cleanup(p)
continue
for diag_part in self.pending_diags:
if p.name == diag_part.name or p.name in diag_part.parents or p.name in diag_part.children:
p.state = "blocked by pending diags"
for nc in p.node_cards:
if nc.used_by:
p.state = "blocked (%s)" % nc.used_by
if nc.state != "RM_NODECARD_UP":
p.state = "hardware offline: nodecard %s" % nc.id
self.offline_partitions.append(p.name)
for s in p.switches:
if s in busted_switches:
p.state = "hardware offline: switch %s" % s
self.offline_partitions.append(p.name)
for dep_name in p._wiring_conflicts:
if self._partitions[dep_name].state in [
"busy", "allocated", "cleanup"
]:
p.state = "blocked-wiring (%s)" % dep_name
break
for part_name in self.failed_diags:
part = self._partitions[part_name]
if p.name == part.name:
p.state = "failed diags"
elif p.name in part.parents or p.name in part.children:
p.state = "blocked by failed diags"
except:
self.logger.error("error in update_partition_state",
exc_info=True)
self._partitions_lock.release()
# cleanup partitions and set their kernels back to the default (while _not_ holding the lock)
pnames_cleaned = []
for p in partitions_cleanup:
self.logger.info(
"partition %s: starting partition destruction", p.name)
pnames_destroyed = []
parts = list(p._all_children)
parts.append(p)
for part in parts:
pnames_cleaned.append(part.name)
try:
bpart = part.bridge_partition
if bpart.state != "RM_PARTITION_FREE":
bpart.destroy()
pnames_destroyed.append(part.name)
except Cobalt.bridge.IncompatibleState:
pass
except:
self.logger.info(
"partition %s: an exception occurred while attempting to destroy partition %s",
p.name, part.name)
if len(pnames_destroyed) > 0:
self.logger.info(
"partition %s: partition destruction initiated for %s",
p.name, ", ".join(pnames_destroyed))
else:
self.logger.info(
"partition %s: no partition destruction was required",
p.name)
try:
self._clear_kernel(p.name)
self.logger.info("partition %s: kernel settings cleared",
p.name)
except:
self.logger.error(
"partition %s: failed to clear kernel settings",
p.name)
job_filter = Cobalt.bridge.JobFilter()
job_filter.job_type = Cobalt.bridge.JOB_TYPE_ALL_FLAG
jobs = Cobalt.bridge.JobList.by_filter(job_filter)
for job in jobs:
if job.partition_id in pnames_cleaned:
try:
job.cancel()
self.logger.info("partition %s: task %d canceled",
job.partition_id, job.db_id)
except (Cobalt.bridge.IncompatibleState,
Cobalt.bridge.JobNotFound):
pass
time.sleep(10)
def _mark_partition_for_cleaning(self, pname, jobid):
self._partitions_lock.acquire()
try:
p = self._partitions[pname]
if p.used_by == jobid:
p.cleanup_pending = True
self.logger.info("partition %s: partition marked for cleanup",
pname)
elif p.used_by != None:
self.logger.info("partition %s: job %s was not the current partition user (%s); partition not marked " + \
"for cleanup", pname, jobid, p.used_by)
except:
self.logger.exception(
"partition %s: unexpected exception while marking the partition for cleanup",
pname)
self._partitions_lock.release()
def _validate_kernel(self, kernel):
if self.config.get('kernel') != 'true':
return True
kernel_dir = "%s/%s" % (os.path.expandvars(
self.config.get('bootprofiles')), kernel)
return os.path.exists(kernel_dir)
def _set_kernel(self, partition, kernel):
'''Set the kernel to be used by jobs run on the specified partition'''
if self.config.get('kernel') != 'true':
if kernel != "default":
raise Exception("custom kernel capabilities disabled")
return
partition_link = "%s/%s" % (os.path.expandvars(
self.config.get('partitionboot')), partition)
kernel_dir = "%s/%s" % (os.path.expandvars(
self.config.get('bootprofiles')), kernel)
try:
current = os.readlink(partition_link)
except OSError:
self.logger.error(
"partition %s: failed to read partitionboot location %s" %
(partition, partition_link))
raise Exception("failed to read partitionboot location %s" %
(partition_link, ))
if current != kernel_dir:
if not self._validate_kernel(kernel):
self.logger.error(
"partition %s: kernel directory \"%s\" does not exist" %
(partition, kernel_dir))
raise Exception("kernel directory \"%s\" does not exist" %
(kernel_dir, ))
self.logger.info(
"partition %s: updating boot image; currently set to \"%s\"" %
(partition, current.split('/')[-1]))
try:
os.unlink(partition_link)
os.symlink(kernel_dir, partition_link)
except OSError:
self.logger.error(
"partition %s: failed to reset boot location" %
(partition, ))
raise Exception("failed to reset boot location for partition" %
(partition, ))
self.logger.info(
"partition %s: boot image updated; now set to \"%s\"" %
(partition, kernel))
def _clear_kernel(self, partition):
'''Set the kernel to be used by a partition to the default value'''
if self.config.get('kernel') == 'true':
try:
self._set_kernel(partition, "default")
except:
logger.error("partition %s: failed to reset boot location" %
(partition, ))
def generate_xml(self):
"""This method produces an XML file describing the managed partitions, suitable for use with the simulator."""
ret = "<BG>\n"
ret += "<PartitionList>\n"
for p_name in self._managed_partitions:
p = self._partitions[p_name]
ret += " <Partition name='%s'>\n" % p.name
for nc in p.node_cards:
ret += " <NodeCard id='%s' />\n" % nc.id
for s in p.switches:
ret += " <Switch id='%s' />\n" % s
ret += " </Partition>\n"
ret += "</PartitionList>\n"
ret += "</BG>\n"
return ret
generate_xml = exposed(generate_xml)
def add_process_groups(self, specs):
"""Create a process group.
Arguments:
spec -- dictionary hash specifying a process group to start
"""
self.logger.info("add_process_groups(%r)" % (specs))
script_specs = []
other_specs = []
for spec in specs:
if spec.get('mode', False) == "script":
script_specs.append(spec)
else:
other_specs.append(spec)
# start up script jobs
script_pgroups = []
if script_specs:
for spec in script_specs:
try:
self._set_kernel(
spec.get('location')[0], spec.get('kernel', "default"))
except Exception, e:
new_pgroup = self.process_groups.q_add([spec])
pgroup = new_pgroup[0]
pgroup.nodect = self._partitions[pgroup.location[0]].size
pgroup.exit_status = 1
self.logger.info(
"process group %s: job %s/%s failed to set the kernel; %s",
pgroup.id, pgroup.jobid, pgroup.user, e)
else:
try:
script_pgroup = ComponentProxy(
"script-manager").add_jobs([spec])
except (ComponentLookupError, xmlrpclib.Fault):
self._clear_kernel(spec.get('location')[0])
# FIXME: jobs that were already started are not reported
raise ProcessGroupCreationError(
"system::add_process_groups failed to communicate with script-manager"
)
new_pgroup = self.process_groups.q_add([spec])
pgroup = new_pgroup[0]
pgroup.script_id = script_pgroup[0]['id']
pgroup.nodect = self._partitions[pgroup.location[0]].size
self.logger.info(
"job %s/%s: process group %s created to track script",
pgroup.jobid, pgroup.user, pgroup.id)
self.reserve_resources_until(
spec['location'],
time.time() + 60 * float(spec['walltime']),
pgroup.jobid)
if pgroup.kernel != "default":
self.logger.info(
"process group %s: job %s/%s using kernel %s",
pgroup.id, pgroup.jobid, pgroup.user,
pgroup.kernel)
script_pgroups.append(pgroup)
# start up non-script mode jobs
process_groups = self.process_groups.q_add(other_specs)
for pgroup in process_groups:
pgroup.nodect = self._partitions[pgroup.location[0]].size
self.logger.info(
"job %s/%s: process group %s created to track mpirun status",
pgroup.jobid, pgroup.user, pgroup.id)
try:
if not pgroup.true_mpi_args:
self._set_kernel(pgroup.location[0], pgroup.kernel)
except Exception, e:
# FIXME: setting exit_status to signal the job has failed isn't really the right thing to do. another flag
# should be added to the process group that wait_process_group uses to determine when a process group is no
# longer active. an error message should also be attached to the process group so that cqm can report the
# problem to the user.
pgroup.exit_status = 1
self.logger.info(
"process group %s: job %s/%s failed to set the kernel; %s",
pgroup.id, pgroup.jobid, pgroup.user, e)
else:
if pgroup.kernel != "default" and not pgroup.true_mpi_args:
self.logger.info(
"process group %s: job %s/%s using kernel %s",
pgroup.id, pgroup.jobid, pgroup.user, pgroup.kernel)
pgroup.start()
self.logger.info("%s: job exited with unknown status", each.label)
# FIXME: should we use a negative number instead to indicate internal errors? --brt
each.exit_status = 1234567
else:
each.exit_status = dead_dict["exit_status"]
if dead_dict["signum"] == 0:
self.logger.info("%s: job exited with status %i", each.label, each.exit_status)
else:
if dead_dict["core_dump"]:
core_dump_str = ", core dumped"
else:
core_dump_str = ""
self.logger.info("%s: terminated with signal %s%s", each.label, dead_dict["signum"], core_dump_str)
self.reserve_resources_until(each.location, None, each.jobid)
_get_exit_status = automatic(_get_exit_status)
def wait_process_groups (self, specs):
"""get process groups that have finished running."""
#self.logger.info("wait_process_groups(%r)" % (specs))
self._get_exit_status()
process_groups = [pg for pg in self.process_groups.q_get(specs) if pg.exit_status is not None]
for process_group in process_groups:
self.reserve_resources_until(process_group.location, None, process_group.jobid)
del self.process_groups[process_group.id]
return process_groups
wait_process_groups = exposed(query(wait_process_groups))
break
signum = 0
core_dump = False
exit_status = None
if os.WIFEXITED(status):
exit_status = os.WEXITSTATUS(status)
elif os.WIFSIGNALED(status):
signum = os.WTERMSIG(status)
if os.WCOREDUMP(status):
core_dump = True
exit_status = 128 + signum
if exit_status is None:
self.logger.info("pid %s died but had no status", pid)
break
if signum:
self.logger.info("pid %s died with status %s and signal %s",
pid, status, signum)
else:
self.logger.info("pid %s died with status %s", pid, status)
for each in self.children.itervalues():
if each.pid == pid:
self.logger.info("task %s: dead pid %s matches",
each.label, pid)
each.exit_status = exit_status
each.core_dump = core_dump
each.signum = signum
wait = automatic(wait)
each.exit_status = dead_dict["exit_status"]
if dead_dict["signum"] == 0:
self.logger.info("%s: job exited with status %i",
each.label, each.exit_status)
else:
if dead_dict["core_dump"]:
core_dump_str = ", core dumped"
else:
core_dump_str = ""
self.logger.info("%s: terminated with signal %s%s",
each.label, dead_dict["signum"],
core_dump_str)
self.reserve_resources_until(each.location, None,
each.jobid)
_get_exit_status = automatic(_get_exit_status)
def wait_process_groups(self, specs):
"""get process groups that have finished running."""
#self.logger.info("wait_process_groups(%r)" % (specs))
self._get_exit_status()
process_groups = [
pg for pg in self.process_groups.q_get(specs)
if pg.exit_status is not None
]
for process_group in process_groups:
self.reserve_resources_until(process_group.location, None,
process_group.jobid)
del self.process_groups[process_group.id]
return process_groups
class Qsimulator(Simulator):
'''Cobalt Queue Simulator'''
implementation = "qsim"
name = "queue-manager"
alias = Simulator.name
def __init__(self, *args, **kwargs):
print "kwargs= ", kwargs
#initialize partitions
Simulator.__init__(self, *args, **kwargs)
partnames = self._partitions.keys()
self.init_partition(partnames)
self.part_size_list = []
for part in self.partitions.itervalues():
if int(part.size) not in self.part_size_list:
self.part_size_list.append(int(part.size))
self.part_size_list.sort()
#get command line parameters
self.FAILURE_FREE = True
self.FRACTION = kwargs.get("fraction", 1)
self.workload_file = kwargs.get("workload")
self.output_log = kwargs.get("outputlog")
self.failure_log = kwargs.get('failurelog')
self.weibull = kwargs.get('weibull')
if self.weibull:
self.SCALE = float(kwargs.get('scale'))
if self.SCALE == 0:
self.SCALE = default_SCALE
self.SHAPE = float(kwargs.get('shape'))
if self.SHAPE == 0:
self.SHAPE = default_SHAPE
self.fault_aware = kwargs.get('faultaware')
self.SENSITIVITY = default_SENSITIVITY
self.SPECIFICITY = default_SPECIFICITY
if self.fault_aware:
self.SENSITIVITY = float(kwargs.get('sensitivity', default_SENSITIVITY))
self.SPECIFICITY = float(kwargs.get('specificity', defalt_SPECIFICITY))
if self.failure_log or self.weibull:
self.FAILURE_FREE = False
#initialize time stamps and job queues
#time stamp format: ('EVENT', 'time_stamp_date', time_stamp_second, {'job_id':str(jobid), 'location':[partition1, partition2,...]})
self.time_stamps = [('I', '0', 0, {})]
self.cur_time_index = 0
self.queues = SimQueueDict(policy=kwargs['policy'])
self.init_queues()
self.visible_jobs = []
#initialize failures
self.failure_dict = {}
if not self.FAILURE_FREE:
if self.failure_log:
#if specified failure log, use log trace failure
self.inject_failures()
elif self.weibull:
#else MAKE failures by Weibull distribution
self.make_failures()
#initialize PBS-style logger
self.pbslog = PBSlogger(self.output_log)
#initialize debug logger
self.dbglog = PBSlogger(self.output_log+"-debug")
#finish tag
self.finished = False
#tag for controlling time stamp increment
self.increment_tag = True
#register local alias "system" for this component
local_components["system"] = self
print "Simulation starts:"
def register_alias(self):
'''register alternate name for the Qsimulator, by registering in slp
with another name for the same location. in this case 'system' is the
alternate name'''
try:
slp = Cobalt.Proxy.ComponentProxy("service-location", defer=False)
except ComponentLookupError:
print >> sys.stderr, "unable to find service-location"
qsim_quit()
svc_location = slp.locate(self.name)
if svc_location:
slp.register(self.alias, svc_location)
register_alias = automatic(register_alias, 30)
def is_finished(self):
return self.finished
is_finished = exposed(is_finished)
def init_partition(self, namelist):
'''add all paritions and apply activate and enable'''
func = self.add_partitions
args = ([{'tag':'partition', 'name':partname, 'size':"*",
'functional':False, 'scheduled':False, 'queue':"*",
'deps':[]} for partname in namelist],)
apply(func, args)
func = self.set_partitions
args = ([{'tag':'partition', 'name':partname} for partname in namelist],
{'scheduled':True, 'functional': True})
apply(func, args)
def get_current_time_event(self):
return self.time_stamps[self.cur_time_index][0]
def get_current_time(self):
'''get current time in date format'''
return self.time_stamps[self.cur_time_index][1]
def get_current_time_sec(self):
return self.time_stamps[self.cur_time_index][2]
get_current_time_sec = exposed(get_current_time_sec)
def get_current_time_job(self):
ret = None
if self.time_stamps[self.cur_time_index][3].has_key('jobid'):
ret = self.time_stamps[self.cur_time_index][3]['jobid']
return ret
def get_current_time_partition(self):
if self.get_current_time_event() in set(["R","S"]):
return self.time_stamps[self.cur_time_index][3]['location']
else:
return None
def get_current_time_stamp(self):
'''get current time stamp index'''
return self.cur_time_index
get_current_time_stamp = exposed(get_current_time_stamp)
def get_current_time_stamp_tuple(self):
return self.time_stamps[self.cur_time_index]
def time_increment(self):
'''the current time stamp increments by 1'''
if self.cur_time_index < len(self.time_stamps) - 1:
self.cur_time_index += 1
print " "
print str(self.get_current_time()) + \
" Time stamp is incremented by 1, current time stamp: " + \
str(self.cur_time_index)
else:
print str(self.get_current_time()) +\
" Reached maximum time stamp: %s, simulating finished! " \
% (str(self.cur_time_index))
self.finished = True
self.pbslog.closeLog()
qsim_quit() #simulation completed, exit!!!
return self.cur_time_index
def insert_time_stamp(self, new_time_date, event, info):
'''insert time stamps in the same order'''
if event not in SET_event:
print "invalid event type,", event
return
new_time_sec = date_to_sec(new_time_date)
new_time_tuple = (event, new_time_date, new_time_sec, info)
pos = len(self.time_stamps)
while new_time_sec < self.time_stamps[pos-1][2]:
pos = pos - 1
self.time_stamps.insert(pos, new_time_tuple)
#print "insert time stamp ", new_time_tuple, " at pos ", pos
return pos
def init_queues(self):
'''parses the work load log file, initializes queues and sorted time
stamp list'''
raw_jobs = parse_work_load(self.workload_file)
specs = []
tag = 0
for key in raw_jobs:
spec = {'valid':True}
tmp = raw_jobs[key]
spec['jobid'] = tmp.get('jobid')
spec['queue'] = tmp.get('queue')
#convert submittime from "%m/%d/%Y %H:%M:%S" to Unix time sec
format_sub_time = tmp.get('submittime')
if format_sub_time:
spec['submittime'] = date_to_sec(format_sub_time)
spec['first_subtime'] = spec['submittime'] #set the first submit time
else:
spec['valid'] = False
#convert walltime from 'hh:mm:ss' to float of minutes
format_walltime = tmp.get('Resource_List.walltime')
spec['walltime'] = 0
if format_walltime:
segs = format_walltime.split(':')
spec['walltime'] = str(int(segs[0])*60 + int(segs[1]))
else: #invalid job entry, discard
spec['valid'] = False
if tmp.get('start') and tmp.get('end'):
act_run_time = float(tmp.get('end')) - float(tmp.get('start'))
spec['runtime'] = str(round(act_run_time, 1))
if IDEALWALLTIME:
wtime = (round(act_run_time / 60, 2) + float(spec['walltime']))/2
#wtime = act_run_time / 60
spec['walltime'] = str(round(wtime, 2))
else:
spec['valid'] = False
if tmp.get('Resource_List.nodect'):
spec['nodes'] = tmp.get('Resource_List.nodect')
else: #invalid job entry, discard
spec['valid'] = False
if tmp.get('user'):
spec['user'] = tmp.get('user')
if tmp.get('project'):
spec['project'] = tmp.get('project')
spec['state'] = 'invisible'
spec['start_time'] = '0'
spec['end_time'] = '0'
#add the job spec to the spec list
if spec['valid'] == True:
specs.append(spec)
#adjust workload density
if FRACTION != 1:
tune_workload(specs, FRACTION)
print "workload adjusted: last submit job=", specs[len(specs)-1].get('submittime')
print "Initializing jobs and time stamps list, wait one moment... ..."
for spec in specs:
format_sub_time = sec_to_date(spec['submittime'])
if not self.time_stamps.__contains__(format_sub_time):
self.insert_time_stamp(format_sub_time, 'Q', {'jobid':str(spec['jobid'])})
print "total job number:", len(specs)
self.add_jobs(specs)
return 0
def log_job_event(self, eventtype, timestamp, spec):
'''log job events(Queue,Start,End) to PBS-style log'''
def len2 (_input):
_input = str(_input)
if len(_input) == 1:
return "0" + _input
else:
return _input
if eventtype == 'Q': #submitted(queued) for the first time
message = "%s;Q;%d;queue=%s" % (timestamp, spec['jobid'], spec['queue'])
elif eventtype == 'R': #resume running after failure recovery
message = "%s;R;%s" % (timestamp, ":".join(spec['location']))
else:
wall_time = spec['walltime']
walltime_minutes = len2(int(float(wall_time)) % 60)
walltime_hours = len2(int(float(wall_time)) // 60)
log_walltime = "%s:%s:00" % (walltime_hours, walltime_minutes)
if eventtype == 'S': #start running
message = "%s;S;%d;queue=%s qtime=%s Resource_List.nodect=%s Resource_List.walltime=%s start=%s exec_host=%s" % \
(timestamp, spec['jobid'], spec['queue'], spec['submittime'],
spec['nodes'], log_walltime, spec['start_time'], ":".join(spec['location']))
elif eventtype == 'E': #end
message = "%s;E;%d;queue=%s qtime=%s Resource_List.nodect=%s Resource_List.walltime=%s start=%s end=%f exec_host=%s runtime=%s" % \
(timestamp, spec['jobid'], spec['queue'], spec['submittime'], spec['nodes'], log_walltime, spec['start_time'],
round(float(spec['end_time']), 1), ":".join(spec['location']),
spec['runtime'])
elif eventtype == 'F': #failure
frag_runtime = round(float(spec['failure_time']) - float(spec['start_time']), 1) #running time before failure(after the latest start)
message = "%s;F;%d;queue=%s qtime=%s Resource_List.nodect=%s Resource_List.walltime=%s exec_host=%s start=%s frag_runtime=%s complete=%f" % \
(timestamp, spec['jobid'], spec['queue'], spec['submittime'],
spec['nodes'], log_walltime, ":".join(spec['location']), spec['start_time'],
frag_runtime, round(frag_runtime / float(spec['runtime']), 2)
)
elif eventtype == 'P': #pending
message = "%s;P;%d;queue=%s qtime=%s Resource_List.nodect=%s Resource_List.walltime=%s exec_host=%s start=%s" % \
(timestamp, spec['jobid'], spec['queue'], spec['submittime'],
spec['nodes'], log_walltime, ":".join(spec['location']), spec['start_time'],
)
else:
print "invalid event type, type=", type
return
self.pbslog.LogMessage(message)
def get_new_states(self, jobspec):
'''return the new state updates of a specific job at specific time
stamp, including invisible->queued, running->ended'''
updates = {}
curstate = jobspec['state']
newstate = curstate
job_id = jobspec['jobid']
cur_event = self.get_current_time_event()
#handle job submssion event
if cur_event == 'Q' and curstate == "invisible":
newstate = "queued"
updates['is_runnable'] = True
updates['is_visible'] = True
self.log_job_event('Q', self.get_current_time(), jobspec)
#handle job completion event
elif cur_event == 'E' and curstate == "running":
newstate = "ended"
updates['is_runnable'] = False
updates['has_resources'] = False
updates['is_visible'] = False
#release partition immediately
partitions = jobspec['location']
for partition in partitions:
self.release_partition(partition)
self.queues.del_jobs([{'jobid':job_id}])
#write to output log
if jobspec['end_time']:
end = float(jobspec['end_time'])
else:
end = 0
end_datetime = sec_to_date(end)
self.log_job_event('E', end_datetime, jobspec)
#handle job failure event
elif cur_event == 'F' and curstate == "running":
print "entered failure handling"
#release partition
partitions = jobspec['location']
for partition in partitions:
print "partition %s start repairing" % (partition)
self.start_repair_partition(partition)
#write to output log
if jobspec['failure_time']:
fail = float(jobspec['failure_time'])
else:
fail = 0
failure_datetime = sec_to_date(fail)
self.log_job_event('F', failure_datetime, jobspec)
print self.get_current_time(), " job %d failed at %s!!" % (job_id, ":".join(jobspec['location']))
rec_updates = self.recovery_mgr(jobspec)
if not rec_updates == {}:
updates.update(rec_updates)
updates['has_resources'] = False
if updates.has_key('state'):
newstate = updates['state']
if CHECKPOINT:
print "enter checkpoint handling****"
#runtime before failed after latest start
frag_runtime = float(jobspec['failure_time']) - float(jobspec['start_time'])
updates['remain_time'] = jobspec['remain_time'] - frag_runtime
else:#other event
pass
if updates and not curstate == newstate:
print self.get_current_time(), "state changed, job", job_id, \
":", curstate, "->", newstate
updates['state'] = newstate
return updates
def update_job_states(self, specs, updates):
'''update the state of the jobs associated to the current time stamp'''
def _update_job_states(job, newattr):
'''callback function to update job states'''
temp = job.to_rx()
newattr = self.get_new_states(temp)
if newattr:
temp.update(newattr)
job.update(newattr)
ids_str = self.get_current_time_job()
ids = ids_str.split(':')
cur_event = self.get_current_time_event()
for id in ids:
for spec in specs:
spec['jobid'] = int(id)
ret_jobs = self.queues.get_jobs(specs, _update_job_states, updates)
if cur_event == "Q":
self.visible_jobs.extend(ret_jobs)
elif cur_event=="E":
self.visible_jobs = [j for j in self.visible_jobs if j not in ret_jobs]
return 0
def run_job_updates(self, jobspec, newattr):
''' return the state updates (including state queued -> running,
setting the start_time, end_time)'''
updates = {}
#print "enter run_job_updates, jobspec=", jobspec
start = self.get_current_time_sec()
updates['start_time'] = start
updates['starttime'] = start
updates['state'] = 'running'
updates['system_state'] = 'running'
updates['is_runnable'] = False
updates['has_resources'] = True
print self.get_current_time(), "run job state change, job", jobspec['jobid'], \
":", jobspec['state'], "->", updates['state']
#determine whether the job is going to fail before completion
location = newattr['location']
duration = jobspec['remain_time']
#print "duration=", duration
nearest_failure = self.get_next_failure(location, start, duration)
if (nearest_failure):
updates['failure_time'] = date_to_sec(nearest_failure)
new_time_stamp = nearest_failure
self.insert_time_stamp(new_time_stamp, 'F', {'jobid':str(jobspec['jobid'])})
else: # will complete
end = start + duration
updates['end_time'] = end
new_time_stamp = sec_to_date(end)
#print "new_time_stamp=", new_time_stamp
self.insert_time_stamp(new_time_stamp, 'E', {'jobid':str(jobspec['jobid'])})
updates.update(newattr)
return updates
def start_job(self, specs, updates):
'''update the job state and start_time and end_time when cqadm --run
is issued to a group of jobs'''
partitions = updates['location']
for partition in partitions:
self.reserve_partition(partition)
def _start_job(job, newattr):
'''callback function to update job start/end time'''
temp = job.to_rx()
newattr = self.run_job_updates(temp, newattr)
temp.update(newattr)
job.update(newattr)
self.log_job_event('S', self.get_current_time(), temp)
return self.queues.get_jobs(specs, _start_job, updates)
def add_jobs(self, specs):
'''Add a job, currently for unit test only'''
response = self.queues.add_jobs(specs)
return response
add_jobs = exposed(query(add_jobs))
def get_jobs(self, specs):
'''get a list of jobs, each time triggers time stamp increment and job
states update'''
jobs = []
if self.increment_tag:
self.time_increment()
eventtype = self.get_current_time_event()
print "current event type====", eventtype
if eventtype == "R":
self.release_repaired_partition()
#if the repaired job associated with some pending jobs,
#returen empty list to scheduler, in order to ensure the next
#time stamp will restart the pending job other than scheduling other jobs at this time stamp
#this will avoid run multiple jobs on the same partition(once a bug, solved)
if self.get_current_time_job():
return jobs
elif eventtype == "S":
self.restart_pending_job()
return jobs
else:
self.update_job_states(specs, {})
if len(self.recovering_jobs) > 0:
self.update_recovering_jobs({})
self.increment_tag = True
jobs = self.visible_jobs
# print "running jobs=", [job.jobid for job in self.running_jobs]
# print "queueing jobs=", [job.jobid for job in self.queuing_jobs]
# print "visible jobs=", [job.jobid for job in self.visible_jobs]
# print "return jobs=", len(jobs)
return jobs
get_jobs = exposed(query(get_jobs))
def update_recovering_jobs(self, updates):
print "enter update_recovering_jobs()"
def _update_recovering_jobs(job, newattr):
'''callback function to update job states'''
temp = job.to_rx()
print "temp=", temp
newattr = self.recovery_mgr(temp)
print "update_recovering_jobs newattr=", newattr
print "temp=", temp
if newattr:
temp.update(newattr)
job.update(newattr)
ids = [job.jobid for job in self.recovering_jobs]
print "ids=", ids
ret = self.queues.get_jobs([{'tag':"job", 'state': "recovering"}], _update_recovering_jobs, updates)
return 0
def _get_queuing_jobs(self):
return [job for job in self.visible_jobs if job.is_runnable==True]
queuing_jobs = property(_get_queuing_jobs)
def _get_running_jobs(self):
return [job for job in self.visible_jobs if job.has_resources==True]
running_jobs = property(_get_running_jobs)
def _get_recovering_jobs(self):
return self.queues.get_jobs([{'jobid':"*", 'state':"recovering"}])
recovering_jobs = property(_get_recovering_jobs)
def get_visible_jobs(self):
return self.visible_jobs;
get_visible_jobs = exposed(get_visible_jobs)
def get_running_jobs(self):
return [job for job in self.visible_jobs if job.has_resources==True]
get_running_jobs = exposed(get_running_jobs)
def get_queuing_jobs(self):
return [job for job in self.visible_jobs if job.is_runnable==True]
get_queuing_jobs = exposed(get_queuing_jobs)
def _get_job_by_id(self, jobid):
jobs = self.queues.get_jobs([{'jobid':jobid}])
if len(jobs) == 1:
return jobs[0]
else:
return None
def add_queues(self, specs):
'''add queues'''
return self.queues.add_queues(specs)
add_queues = exposed(query(add_queues))
def get_queues(self, specs):
'''get queues'''
return self.queues.get_queues(specs)
get_queues = exposed(query(get_queues))
def run_jobs(self, specs, nodelist):
'''run a queued job, by updating the job state, start_time and
end_time'''
print "run job specs=", specs, " on partion", nodelist
if specs:
self.start_job(specs, {'location': nodelist})
#set tag false, enable scheduling another job at the same time
self.increment_tag = False
#print "current running jobs=", [job.jobid for job in self.running_jobs]
return self.running_jobs
run_jobs = exposed(query(run_jobs))
def get_midplanes(self, partname):
'''return a list of sub-partitions each contains 512-nodes(midplane)'''
midplane_list = []
partition = self._partitions[partname]
if partition.size == MIDPLANE_SIZE:
midplane_list.append(partname)
elif partition.size > MIDPLANE_SIZE:
children = partition.children
for part in children:
if self._partitions[part].size == MIDPLANE_SIZE:
midplane_list.append(part)
else:
parents = partition.parents
for part in parents:
if self._partitions[part].size == MIDPLANE_SIZE:
midplane_list.append(part)
return midplane_list
def get_next_failure(self, location, now, duration):
'''return the next(closest) failure moment according the partition failure list'''
if (self.FAILURE_FREE):
return None
def _find_next_failure(partname, now):
next = None
failure_list = self.failure_dict[partname]
if failure_list:
for fail_time in failure_list:
if date_to_sec(fail_time) > now:
next = fail_time
break
return next
closest_fail_sec = MAXINT
partitions = location
midplanes = set()
for partition in partitions:
tmp_midplanes = self.get_midplanes(partition)
for item in tmp_midplanes:
if item not in midplanes:
midplanes.add(item)
for midplane in midplanes:
next = _find_next_failure(midplane, now)
if (next):
next_sec = date_to_sec(next)
if next_sec < closest_fail_sec:
closest_fail_sec =next_sec
if closest_fail_sec == MAXINT:
next_failure_date = None
else:
job_end_sec = now + duration
if closest_fail_sec < job_end_sec:
next_failure_date = sec_to_date(closest_fail_sec)
else:
next_failure_date = None
#print "next_failure_date=", next_failure_date
return next_failure_date
def will_job_fail(self, mtbf, nodes, hours):
'''simulate static failure chance, [not used]'''
return False
print "mtbf=%d, nodes=%d, hours=%f" % (mtbf,nodes,hours)
failure_chance = 1 - (1 - hours * 1.0/mtbf) ** nodes
if failure_chance > 0.7 :
failure_chance = 0.7
random_num = random.random()
print "failure chance=%f, random_num=%f" % (failure_chance, random_num)
if random_num < failure_chance:
return True
else:
return False
def nodes_static(self):
'''static the node requested by each job, [not used]'''
jobs = self.queues.get_jobs([{'jobid':"*", 'queue':"*", 'nodes':"*"}])
nodesdict = {}
for job in jobs:
nodes = int(job.nodes)
nodesstr = nodes
if (nodesdict.has_key(nodesstr)):
nodesdict[nodesstr] = nodesdict[nodesstr] + 1
else:
nodesdict[nodesstr] = 1
keys = nodesdict.keys()
keys.sort()
for key in keys:
print key, ":", nodesdict[key]
def gen_failure_list(self, scale, shape, startdate, enddate):
'''generate a synthetic failure time list based on weibull distribution
and start/end date time'''
failure_moments = []
ttf_list = []
start = date_to_sec(startdate)
end = date_to_sec(enddate)
cur_failure = start
while True:
ttf = random.weibullvariate(scale,shape)
cur_failure += ttf
if cur_failure < end:
ttf_list.append(ttf)
failure_moments.append(sec_to_date(cur_failure))
else:
break
return failure_moments, ttf_list
def make_failures(self):
'''generate failure lists for each 512-nodes partition'''
ttf_dict = {}
start = self.time_stamps[1][1]
end = self.time_stamps[len(self.time_stamps)-1][1]
for partition in self._partitions.values():
if partition.size == MIDPLANE_SIZE:
fl, ttfs = self.gen_failure_list(self.SCALE, self.SHAPE, start, end)
self.failure_dict[partition.name] = fl
ttf_dict[partition.name] = ttfs
partnames = self.failure_dict.keys()
partnames.sort()
f = open(default_FAILURE_LOG, "w")
total_f = 0
mtbf = 0
for part in partnames:
f_list = self.failure_dict[part]
print part, " ", f_list
f.write("%s;%s\n" % (part, ";".join(f_list)))
total_f += len(f_list)
ttfs = ttf_dict[part]
if len(ttfs)==0:
mtbf = 0
else:
total = 0
for ttf in ttfs:
total += ttf
mtbf = total / len(ttfs)
start_sec = date_to_sec(start)
end_sec = date_to_sec(end)
f.write("Total=%d\nMTBF=%f" % (total_f, (end_sec-start_sec)/(total_f*3600)))
f.close()
def inject_failures(self):
'''parse failure trace log to make failure list for each 1-midplane partition'''
raw_job_dict = {}
partnames = set(self._partitions.keys())
flog = open(self.failure_log, "r")
self.failure_dict = {}
for line in flog:
print "line=", line
line = line.strip('\n')
parsedline = line.split(";")
print "parsedline=", parsedline
failure_list = []
part = parsedline[0]
if part in partnames:
for i in range(1, len(parsedline)):
failure_moment = parsedline[i]
if len(failure_moment) == 0:
continue
failure_list.append(failure_moment)
self.failure_dict[part] = failure_list
partnames = self.failure_dict.keys()
partnames.sort()
for part in partnames:
f_list = self.failure_dict[part]
print part, " ", f_list
def get_failure_chance(self, location, duration):
now = date_to_sec(self.get_current_time())
next_fail = self.get_next_failure(location, now, duration)
if (next_fail != None):
return self.SENSITIVITY
else:
return 1 - self.SPECIFICITY
get_failure_chance = exposed(get_failure_chance)
def recovery_mgr(self, jobspec):
"""Recovery manager, this function can be extended to support various recovery options.
at this version, the failed job is sent back to the rear of the queue. The extended code
is ready and available at private code branch(wtang)."""
updates = {}
updates = self.handle_reque_rear(jobspec)
recovery_option = jobspec['recovery_opt']
print "rec_opt=", recovery_option
#if_else structure remains room for recovery option extending
if recovery_option == 1:
#resubmit the job
#resubmit the job, the submit time changed to NOW
updates = self.handle_reque_rear(jobspec)
return updates
def handle_reque_rear(self, jobspec):
'''handle option 1 - resubmit the job to rear of waiting queue'''
updates = {}
updates['state'] = "queued"
updates['start_time'] = 0
updates['submittime'] = self.get_current_time_sec()
return updates
def start_repair_partition(self, partname):
'''partition failed, assuming get repaired MTTR seconds later'''
now = self.get_current_time_sec()
time_to_repair = now + MTTR
time_to_repair_date = sec_to_date(time_to_repair)
self.insert_time_stamp(time_to_repair_date, "R", {'location':partname})
def release_repaired_partition(self):
'''enter release_repaired_partition() partition repaired'''
partition = self.get_current_time_partition()
if partition == None:
return False
self.release_partition(partition)
print "partition %s gets repaired" % (partition)
self.log_job_event('R', self.get_current_time(), {'location':partition})
return True
def restart_pending_job(self):
'''restart jobs that pending for the nodes repair'''
partname = self.get_current_time_partition()
print "enter restart_pending_job() partname=", partname
ids_str = self.get_current_time_job()
ids = ids_str.split(':')
jobspecs = []
for id in ids:
spec = {'tag':'job', 'jobid':int(id)}
jobspecs.append(spec)
print "restart pending job ", jobspecs, " on repaired partition ", partname
self.run_jobs(jobspecs, [partname])
def possible_locations(self, job):
'''find the partitions with the size that can right accomodates the job
(returned partions are not necessarily idle)'''
locations = []
proper_partsize = 64
job_nodes = int(job['nodes'])
for psize in self.part_size_list:
if psize >= job_nodes:
proper_partsize = psize
break
for part in self.cached_partitions.itervalues():
if int(part.size) == proper_partsize:
locations.append(part)
return locations
def _find_job_location(self, args, drain_partitions=set(), backfilling=False):
jobid = args['jobid']
nodes = args['nodes']
queue = args['queue']
utility_score = args['utility_score']
walltime = args['walltime']
forbidden = args.get("forbidden", [])
required = args.get("required", [])
best_score = sys.maxint
best_partition = None
# get partitions of proper size as the candidates
candidate_partitions = self.possible_locations(args)
#exclude the partitions already drained
if drain_partitions:
candidate_partitions = [part for part in candidate_partitions if part not in drain_partitions]
now = self.get_current_time_sec()
for partition in candidate_partitions:
#skip partitions that are not "idle"
if partition.state != "idle":
continue
if backfilling:
#skip the partition with too short cutoff to backfill the job
if 60*float(walltime) > (partition.backfill_time - now):
continue
# let's check the impact on partitions that would become blocked
score = 0
for p in partition.parents:
if self.cached_partitions[p].state == "idle" and self.cached_partitions[p].scheduled:
score += 1
for ch in partition.children:
score += 0.01
if (FAULTAWARE):
Pf = 0
Pf = self.get_failure_chance(partition.name, 60*float(walltime))
score += Pf
# the lower the score, the fewer new partitions will be blocked by this selection
if score < best_score:
best_score = score
best_partition = partition
elif score == best_score:
if partition.name > best_partition.name:
best_partition = partition
if best_partition:
#print "return bestpartition=",{jobid: [best_partition.name, best_partition.state]}
return {jobid: [best_partition.name]}
def find_job_location(self, arg_list, end_times):
best_partition_dict = {}
if self.bridge_in_error:
print "bridge_in_error"
return {}
self.cached_partitions = self.partitions
# first, figure out backfilling cutoffs per partition (which we'll also
# use for picking which partition to drain)
job_end_times = {}
for item in end_times:
job_end_times[item[0][0]] = item[1]
now = self.get_current_time_sec()
for p in self.cached_partitions.itervalues():
if p.state == "idle":
p.backfill_time = now
else:
p.backfill_time = now + 5*60
p.draining = False
for p in self.cached_partitions.itervalues():
if p.name in job_end_times:
if job_end_times[p.name] > p.backfill_time:
p.backfill_time = job_end_times[p.name]
for parent_name in p.parents:
parent_partition = self.cached_partitions[parent_name]
if p.backfill_time > parent_partition.backfill_time:
parent_partition.backfill_time = p.backfill_time
for p in self.cached_partitions.itervalues():
if p.backfill_time == now:
continue
for child_name in p.children:
child_partition = self.cached_partitions[child_name]
if child_partition.backfill_time == now or child_partition.backfill_time > p.backfill_time:
child_partition.backfill_time = p.backfill_time
# first time through, try for starting jobs based on utility scores
drain_partitions = set()
# the sets draining_jobs and cannot_start are for efficiency, not correctness
draining_jobs = set()
cannot_start = set()
for idx in range(len(arg_list)):
winning_job = arg_list[idx]
for jj in range(idx, len(arg_list)):
job = arg_list[jj]
# this job isn't good enough!
if job['utility_score'] < winning_job['threshold']:
break
if job['jobid'] not in cannot_start:
partition_name = self._find_job_location(job, drain_partitions)
if partition_name:
best_partition_dict.update(partition_name)
break
cannot_start.add(job['jobid'])
# we already picked a drain location for the winning job
if winning_job['jobid'] in draining_jobs:
continue
location = self._find_drain_partition(winning_job)
if location is not None:
for p_name in location.parents:
drain_partitions.add(self.cached_partitions[p_name])
for p_name in location.children:
drain_partitions.add(self.cached_partitions[p_name])
self.cached_partitions[p_name].draining = True
drain_partitions.add(location)
#self.logger.info("job %s is draining %s" % (winning_job['jobid'], location.name))
#self.dbglog.LogMessage("job %s is draining %s" % (winning_job['jobid'], location.name))
location.draining = True
draining_jobs.add(winning_job['jobid'])
# at this time, we only want to try launching one job at a time
if best_partition_dict:
# msg = "idx=%s, jj=%s, job=%s, partition=%s" % (idx, jj, job['jobid'],best_partition_dict[job['jobid']])
#print msg
# self.dbglog.LogMessage(msg)
break
# the next time through, try to backfill, but only if we couldn't find anything to start
if not best_partition_dict:
# arg_list.sort(self._walltimecmp)
# msg = "try to backfill jobs..."
# self.dbglog.LogMessage(msg)
for args in arg_list:
partition_name = self._find_job_location(args, backfilling=True)
if partition_name:
msg = "backfilling job %s(%s)" % (args['jobid'], args['nodes'])
self.logger.info(msg)
self.dbglog.LogMessage(msg)
best_partition_dict.update(partition_name)
break
# reserve the stuff in the best_partition_dict, as those partitions are allegedly going to
# be running jobs very soon
#
# also, this is the only part of finding a job location where we need to lock anything
#self._partitions_lock.acquire()
try:
for p in self.partitions.itervalues():
# push the backfilling info from the local cache back to the real objects
p.draining = self.cached_partitions[p.name].draining
p.backfill_time = self.cached_partitions[p.name].backfill_time
for partition_list in best_partition_dict.itervalues():
part = self.partitions[partition_list[0]]
##part.reserved_until = self.get_current_time_sec() + 5*60
part.state = "starting job"
for p in part._parents:
if p.state == "idle":
p.state = "blocked by starting job"
for p in part._children:
if p.state == "idle":
p.state = "blocked by starting job"
except:
self.logger.error("error in find_job_location", exc_info=True)
#self._partitions_lock.release()
#print "best_partition_dict=", best_partition_dict
return best_partition_dict
find_job_location = locking(exposed(find_job_location))
class Simulator(BGBaseSystem):
"""Generic system simulator.
Methods:
configure -- load partitions from an xml file
reserve_partition -- lock a partition for use by a process_group (exposed)
release_partition -- release a locked (busy) partition (exposed)
add_process_groups -- add (start) a process group on the system (exposed, query)
get_process_groups -- retrieve process groups (exposed, query)
wait_process_groups -- get process groups that have exited, and remove them from the system (exposed, query)
signal_process_groups -- send a signal to the head process of the specified process groups (exposed, query)
update_partition_state -- simulates updating partition state from the bridge API (automatic)
"""
name = "system"
implementation = "simulator"
logger = logger
MIN_RUN_TIME = 60
MAX_RUN_TIME = 180
def __init__(self, *args, **kwargs):
BGBaseSystem.__init__(self, *args, **kwargs)
sys.setrecursionlimit(5000) #why this magic number?
self.process_groups.item_cls = BGSimProcessGroup
self.config_file = kwargs.get("config_file", None)
self.failed_components = set()
if self.config_file is not None:
self.configure(self.config_file)
def __getstate__(self):
flags = {}
for part in self._partitions.values():
sched = None
func = None
queue = None
if hasattr(part, 'scheduled'):
sched = part.scheduled
if hasattr(part, 'functional'):
func = part.functional
if hasattr(part, 'queue'):
queue = part.queue
flags[part.name] = (sched, func, queue)
return {
'managed_partitions': self._managed_partitions,
'version': 2,
'config_file': self.config_file,
'partition_flags': flags
}
def __setstate__(self, state):
Cobalt.Util.fix_set(state)
sys.setrecursionlimit(5000)
self._managed_partitions = state['managed_partitions']
self.config_file = state['config_file']
self._partitions = PartitionDict()
self.process_groups = BGProcessGroupDict()
self.process_groups.item_cls = BGSimProcessGroup
self.node_card_cache = dict()
self._partitions_lock = thread.allocate_lock()
self.failed_components = set()
self.pending_diags = dict()
self.failed_diags = list()
self.bridge_in_error = False
self.cached_partitions = None
self.offline_partitions = []
if self.config_file is not None:
self.configure(self.config_file)
if 'partition_flags' in state:
for pname, flags in state['partition_flags'].items():
if pname in self._partitions:
self._partitions[pname].scheduled = flags[0]
self._partitions[pname].functional = flags[1]
self._partitions[pname].queue = flags[2]
else:
logger.info("Partition %s is no longer defined" % pname)
self.update_relatives()
self.lock = threading.Lock()
self.statistics = Statistics()
def save_me(self):
Component.save(self)
save_me = automatic(save_me)
def configure(self, config_file):
"""Configure simulated partitions.
Arguments:
config_file -- xml configuration file
"""
def _get_node_card(name):
if not self.node_card_cache.has_key(name):
self.node_card_cache[name] = NodeCard(name)
return self.node_card_cache[name]
self.logger.info("configure()")
try:
system_doc = ElementTree.parse(config_file)
except IOError:
self.logger.error("unable to open file: %r" % config_file)
self.logger.error("exiting...")
sys.exit(1)
except:
self.logger.error("problem loading data from file: %r" %
config_file)
self.logger.error("exiting...")
sys.exit(1)
system_def = system_doc.getroot()
if system_def.tag != "BG":
self.logger.error("unexpected root element in %r: %r" %
(config_file, system_def.tag))
self.logger.error("exiting...")
sys.exit(1)
# that 32 is not really constant -- it needs to either be read from cobalt.conf or from the bridge API
NODES_PER_NODECARD = 32
# initialize a new partition dict with all partitions
#
partitions = PartitionDict()
tmp_list = []
# this is going to hold partition objects from the bridge (not our own Partition)
wiring_cache = {}
bp_cache = {}
for partition_def in system_def.getiterator("Partition"):
node_list = []
switch_list = []
for nc in partition_def.getiterator("NodeCard"):
node_list.append(_get_node_card(nc.get("id")))
nc_count = len(node_list)
if not wiring_cache.has_key(nc_count):
wiring_cache[nc_count] = []
wiring_cache[nc_count].append(partition_def.get("name"))
for s in partition_def.getiterator("Switch"):
switch_list.append(s.get("id"))
tmp_list.append(
dict(
name=partition_def.get("name"),
queue=partition_def.get("queue", "default"),
size=NODES_PER_NODECARD * nc_count,
node_cards=node_list,
switches=switch_list,
state="idle",
))
partitions.q_add(tmp_list)
# find the wiring deps
for size in wiring_cache:
for p in wiring_cache[size]:
p = partitions[p]
s1 = set(p.switches)
for other in wiring_cache[size]:
other = partitions[other]
if (p.name == other.name):
continue
s2 = set(other.switches)
if s1.intersection(s2):
self.logger.info(
"found a wiring dep between %s and %s", p.name,
other.name)
partitions[p.name]._wiring_conflicts.add(other.name)
# update object state
self._partitions.clear()
self._partitions.update(partitions)
def reserve_partition(self, name, size=None):
"""Reserve a partition and block all related partitions.
Arguments:
name -- name of the partition to reserve
size -- size of the process group reserving the partition (optional)
"""
try:
partition = self.partitions[name]
except KeyError:
self.logger.error("reserve_partition(%r, %r) [does not exist]" %
(name, size))
return False
if partition.state != "allocated":
self.logger.error("reserve_partition(%r, %r) [%s]" %
(name, size, partition.state))
return False
if not partition.functional:
self.logger.error("reserve_partition(%r, %r) [not functional]" %
(name, size))
if size is not None and size > partition.size:
self.logger.error("reserve_partition(%r, %r) [size mismatch]" %
(name, size))
return False
self._partitions_lock.acquire()
try:
partition.state = "busy"
partition.reserved_until = False
except:
self.logger.error("error in reserve_partition", exc_info=True)
self._partitions_lock.release()
# explicitly call this, since the above "busy" is instantaneously available
self.update_partition_state()
self.logger.info("reserve_partition(%r, %r)" % (name, size))
return True
reserve_partition = exposed(reserve_partition)
def release_partition(self, name):
"""Release a reserved partition.
Arguments:
name -- name of the partition to release
"""
try:
partition = self.partitions[name]
except KeyError:
self.logger.error("release_partition(%r) [already free]" % (name))
return False
if not partition.state == "busy":
self.logger.info("release_partition(%r) [not busy]" % (name))
return False
self._partitions_lock.acquire()
try:
partition.state = "idle"
except:
self.logger.error("error in release_partition", exc_info=True)
self._partitions_lock.release()
# explicitly unblock the blocked partitions
self.update_partition_state()
self.logger.info("release_partition(%r)" % (name))
return True
release_partition = exposed(release_partition)
def add_process_groups(self, specs):
"""Create a simulated process group.
Arguments:
spec -- dictionary hash specifying a process group to start
"""
self.logger.info("add_process_groups(%r)" % (specs))
# FIXME: setting exit_status to signal the job has failed isn't really the right thing to do. another flag should be
# added to the process group that wait_process_group uses to determine when a process group is no longer active. an
# error message should also be attached to the process group so that cqm can report the problem to the user.
process_groups = self.process_groups.q_add(specs)
for pgroup in process_groups:
pgroup.label = "Job %s/%s/%s" % (pgroup.jobid, pgroup.user,
pgroup.id)
pgroup.nodect = self._partitions[pgroup.location[0]].size
self.logger.info(
"%s: process group %s created to track job status",
pgroup.label, pgroup.id)
try:
#TODO: allow the kernel set step to work in the simulator. For now this doesn't fly.
pass
#self._set_kernel(pgroup.location[0], pgroup.kernel)
except Exception, e:
self.logger.error("%s: failed to set the kernel; %s",
pgroup.label, e)
pgroup.exit_status = 255
else:
if pgroup.kernel != "default":
self.logger.info("%s: now using kernel %s", pgroup.label,
pgroup.kernel)
if pgroup.mode == "script":
pgroup.forker = 'user_script_forker'
else:
pgroup.forker = 'bg_mpirun_forker'
if self.reserve_resources_until(
pgroup.location,
float(pgroup.starttime) + 60 * float(pgroup.walltime),
pgroup.jobid):
try:
pgroup.start()
if pgroup.head_pid == None:
self.logger.error(
"%s: process group failed to start using the %s component; releasing resources",
pgroup.label, pgroup.forker)
self.reserve_resources_until(
pgroup.location, None, pgroup.jobid)
pgroup.exit_status = 255
except (ComponentLookupError, xmlrpclib.Fault), e:
self.logger.error(
"%s: failed to contact the %s component",
pgroup.label, pgroup.forker)
# do not release the resources; instead re-raise the exception and allow cqm to the opportunity to retry
# until the job has exhausted its maximum alloted time
del self.process_groups[pgroup.id]
raise
except (ComponentLookupError, xmlrpclib.Fault), e:
self.logger.error(
"%s: a fault occurred while attempting to start the process group using the %s "
"component", pgroup.label, pgroup.forker)
# do not release the resources; instead re-raise the exception and allow cqm to the opportunity to retry
# until the job has exhausted its maximum alloted time
del self.process_groups[process_group.id]
raise
except:
class BGBaseSystem(Component):
"""base system class.
Methods:
add_partitions -- tell the system to manage partitions (exposed, query)
get_partitions -- retrieve partitions in the simulator (exposed, query)
del_partitions -- tell the system not to manage partitions (exposed, query)
set_partitions -- change random attributes of partitions (exposed, query)
update_relatives -- should be called when partitions are added and removed from the managed list
"""
def __init__(self, *args, **kwargs):
Component.__init__(self, *args, **kwargs)
self._partitions = PartitionDict()
self._managed_partitions = set()
self.process_groups = BGProcessGroupDict()
self.node_card_cache = dict()
self._partitions_lock = thread.allocate_lock()
self.pending_diags = dict()
self.failed_diags = list()
self.bridge_in_error = False
self.cached_partitions = None
self.offline_partitions = []
def _get_partitions(self):
return PartitionDict([(partition.name, partition)
for partition in self._partitions.itervalues()
if partition.name in self._managed_partitions])
partitions = property(_get_partitions)
def add_partitions(self, specs, user_name=None):
self.logger.info("%s called add_partitions(%r)", user_name, specs)
specs = [{'name': spec.get("name")} for spec in specs]
self._partitions_lock.acquire()
try:
partitions = [
partition for partition in self._partitions.q_get(specs)
if partition.name not in self._managed_partitions
]
except:
partitions = []
self.logger.error("error in add_partitions", exc_info=True)
self._partitions_lock.release()
self._managed_partitions.update(
[partition.name for partition in partitions])
self.update_relatives()
return partitions
add_partition = exposed(query(add_partitions))
def get_partitions(self, specs):
"""Query partitions on simulator."""
self._partitions_lock.acquire()
try:
partitions = self.partitions.q_get(specs)
except:
partitions = []
self.logger.error("error in get_partitions", exc_info=True)
self._partitions_lock.release()
return partitions
get_partitions = exposed(query(get_partitions))
def verify_locations(self, location_list):
"""Providing a system agnostic interface for making sure a 'location string' is valid"""
parts = self.get_partitions([{'name': l} for l in location_list])
return [p.name for p in parts]
verify_locations = exposed(verify_locations)
def del_partitions(self, specs, user_name=None):
"""Remove partitions from the list of managed partitions"""
self.logger.info("%s called del_partitions(%r)", user_name, specs)
self._partitions_lock.acquire()
try:
partitions = [
partition for partition in self._partitions.q_get(specs)
if partition.name in self._managed_partitions
]
except:
partitions = []
self.logger.error("error in del_partitions", exc_info=True)
self._partitions_lock.release()
self._managed_partitions -= set(
[partition.name for partition in partitions])
self.update_relatives()
return partitions
del_partitions = exposed(query(del_partitions))
def set_partitions(self, specs, updates, user_name=None):
"""Update random attributes on matching partitions"""
def _set_partitions(part, newattr):
self.logger.info("%s updating partition %s: %r", user_name,
part.name, newattr)
part.update(newattr)
self._partitions_lock.acquire()
try:
partitions = self._partitions.q_get(specs, _set_partitions,
updates)
except:
partitions = []
self.logger.error("error in set_partitions", exc_info=True)
self._partitions_lock.release()
return partitions
set_partitions = exposed(query(set_partitions))
def update_relatives(self):
"""Call this method after changing the contents of self._managed_partitions"""
for p_name in self._managed_partitions:
self._partitions[p_name]._parents = set()
self._partitions[p_name]._children = set()
for p in self._partitions.itervalues():
p._all_children = set()
for p_name in self._managed_partitions:
p = self._partitions[p_name]
#Check the wiring dependencies of our children.
#Touching those would be bad. --PMR
# new_parents = []
# for par in p._parents:
# for dep_name in par._wiring_conflicts:
# if dep_name in self._managed_partitions:
# new_parents.append(self._partitions[dep_name])
# p._parents.union(set(new_parents))
#
# for child in p._children:
# for dep_name in child._wiring_conflicts:
# if dep_name in self._managed_partitions:
# p._parents.add(self._partitions[dep_name])
# toss the wiring dependencies in with the parents
for dep_name in p._wiring_conflicts:
if dep_name in self._managed_partitions:
p._parents.add(self._partitions[dep_name])
for other in self._partitions.itervalues():
if p.name == other.name:
continue
p_set = set(p.node_cards)
other_set = set(other.node_cards)
if other.name in self._managed_partitions:
# if p is a subset of other, then p is a child; add other to p's list of managed parent partitions, and p to
# other's list of managed child partitions
if p_set.intersection(other_set) == p_set:
p._parents.add(other)
other._children.add(p)
# if p contains other, then p is a parent; add other to p's list of managed child partitions and p to other's
# list of managed parent partitions
elif p_set.union(other_set) == p_set:
p._children.add(other)
other._parents.add(p)
# if p contains other, then p is a parent; add other to p's list of all child partitions
if p_set.union(other_set) == p_set:
p._all_children.add(other)
#Let's get the wiring conflicts for direct childeren as well,
#we shouldn't be able to run on these either. --PMR
for p_name in self._managed_partitions:
#if p_name != "ANL-R10-R47-32768":
# continue
p = self._partitions[p_name]
for child in p._children:
#print "Child %s:" % child.name
for dep_name in child._wiring_conflicts:
#print "Conflict: %s" % dep_name
if dep_name in self._managed_partitions:
p._parents.add(self._partitions[dep_name])
#we shouldn't be scheduling on the parents of our children either
for par in child._parents:
#print "Parent: %s" % par.name
if ((par.name != p_name)
and (par.name in self._managed_partitions)):
p._parents.add(self._partitions[par.name])
#for p_name in self._managed_partitions:
#if p_name != "ANL-R10-R47-32768":
# continue
# print str(p_name) + ":"
# print "Parents: " + str(":".join([par.name for par in self._partitions[p_name]._parents]))
# print "Children:" + str(":".join([child.name for child in self._partitions[p_name]._children]))
# print "Conflicts:" + str(":".join([con for con in self._partitions[p_name]._wiring_conflicts]))
def validate_job(self, spec):
"""validate a job for submission
Arguments:
spec -- job specification dictionary
"""
# spec has {nodes, walltime*, procs, mode, kernel}
max_nodes = max([int(p.size) for p in self._partitions.values()])
try:
sys_type = CP.get('bgsystem', 'bgtype')
except:
sys_type = 'bgl'
if sys_type == 'bgp':
job_types = ['smp', 'dual', 'vn', 'script']
else:
job_types = ['co', 'vn', 'script']
try:
spec['nodecount'] = int(spec['nodecount'])
except:
raise JobValidationError("Non-integer node count")
if not 0 < spec['nodecount'] <= max_nodes:
raise JobValidationError("Node count out of realistic range")
if float(spec['time']) < 5:
raise JobValidationError("Walltime less than minimum")
if not spec['mode']:
if sys_type == 'bgp':
spec['mode'] = 'smp'
else:
spec['mode'] = 'co'
if spec['mode'] not in job_types:
raise JobValidationError("Invalid mode")
if spec['attrs'].has_key("location"):
p_name = spec['attrs']['location']
if not self.partitions.has_key(p_name):
raise JobValidationError("Partition %s not found" % p_name)
if not spec['proccount']:
if spec.get('mode', 'co') == 'vn':
if sys_type == 'bgl':
spec['proccount'] = str(2 * int(spec['nodecount']))
elif sys_type == 'bgp':
spec['proccount'] = str(4 * int(spec['nodecount']))
else:
self.logger.error("Unknown bgtype %s" % (sys_type))
elif spec.get('mode', 'co') == 'dual':
spec['proccount'] = 2 * int(spec['nodecount'])
else:
spec['proccount'] = spec['nodecount']
else:
try:
spec['proccount'] = int(spec['proccount'])
except:
JobValidationError("non-integer proccount")
if spec['proccount'] < 1:
raise JobValidationError("negative proccount")
if spec['proccount'] > spec['nodecount']:
if spec['mode'] not in ['vn', 'dual']:
raise JobValidationError("proccount too large")
if sys_type == 'bgl' and (spec['proccount'] >
(2 * spec['nodecount'])):
raise JobValidationError("proccount too large")
elif sys_type == ' bgp' and (spec['proccount'] >
(4 * spec['nodecount'])):
raise JobValidationError("proccount too large")
# need to handle kernel
return spec
validate_job = exposed(validate_job)
def run_diags(self, partition_list, test_name, user_name=None):
self.logger.info("%s running diags %s on partitions %s", user_name,
test_name, partition_list)
def size_cmp(left, right):
return -cmp(left.size, right.size)
def _find_covering(partition):
kids = [self._partitions[c_name] for c_name in partition.children]
kids.sort(size_cmp)
n = len(kids)
part_node_cards = set(partition.node_cards)
# generate the power set, but try to use the big partitions first (hence the sort above)
for i in xrange(1, 2**n + 1):
test_cover = [kids[j] for j in range(n) if i & 2**j]
test_node_cards = set()
for t in test_cover:
test_node_cards.update(t.node_cards)
if test_node_cards.issubset(
part_node_cards) and test_node_cards.issuperset(
part_node_cards):
return test_cover
return []
def _run_diags(partition):
covering = _find_covering(partition)
for child in covering:
self.pending_diags[child] = test_name
return [child.name for child in covering]
results = []
for partition_name in partition_list:
p = self._partitions[partition_name]
results.append(_run_diags(p))
return results
run_diags = exposed(run_diags)
def launch_diags(self, partition, test_name):
'''override this method in derived classes!'''
pass
def finish_diags(self, partition, test_name, exit_value):
'''call this method somewhere in your derived class where you deal with the exit values of diags'''
if exit_value == 0:
for dead in self.failed_diags[:]:
if dead == partition.name or dead in partition.children:
self.failed_diags.remove(dead)
self.logger.info("removing %s from failed_diags list" %
dead)
else:
if partition.children:
self.run_diags([partition.name], test_name)
else:
self.failed_diags.append(partition.name)
self.logger.info("adding %s to failed_diags list" %
partition.name)
def handle_pending_diags(self):
for p in self.pending_diags.keys():
if p.state in [
"idle", "blocked by pending diags", "failed diags",
"blocked by failed diags"
]:
self.logger.info("launching diagnostics on %s" % p.name)
self.launch_diags(p, self.pending_diags[p])
del self.pending_diags[p]
handle_pending_diags = automatic(handle_pending_diags)
def fail_partitions(self, specs, user_name=None):
self.logger.info("%s failing partition %s", user_name, specs)
parts = self.get_partitions(specs)
if not parts:
ret = "no matching partitions found\n"
else:
ret = ""
for p in parts:
if self.failed_diags.count(p.name) == 0:
ret += "failing %s\n" % p.name
self.failed_diags.append(p.name)
else:
ret += "%s is already marked as failing\n" % p.name
return ret
fail_partitions = exposed(fail_partitions)
def unfail_partitions(self, specs, user_name=None):
self.logger.info("%s unfailing partition %s", user_name, specs)
parts = self.get_partitions(specs)
if not parts:
ret = "no matching partitions found\n"
else:
ret = ""
for p in self.get_partitions(specs):
if self.failed_diags.count(p.name):
ret += "unfailing %s\n" % p.name
self.failed_diags.remove(p.name)
else:
ret += "%s is not currently failing\n" % p.name
return ret
unfail_partitions = exposed(unfail_partitions)
def _find_job_location(self,
args,
drain_partitions=set(),
backfilling=False):
jobid = args['jobid']
nodes = args['nodes']
queue = args['queue']
utility_score = args['utility_score']
walltime = args['walltime']
walltime_p = args.get('walltime_p', walltime) #*AdjEst*
forbidden = args.get("forbidden", [])
required = args.get("required", [])
if walltime_prediction_enabled: # *Adj_Est*
runtime_estimate = float(walltime_p)
else:
runtime_estimate = float(walltime)
best_score = sys.maxint
best_partition = None
available_partitions = set()
requested_location = None
if args['attrs'].has_key("location"):
requested_location = args['attrs']['location']
if required:
# whittle down the list of required partitions to the ones of the proper size
# this is a lot like the stuff in _build_locations_cache, but unfortunately,
# reservation queues aren't assigned like real queues, so that code doesn't find
# these
for p_name in required:
available_partitions.add(self.cached_partitions[p_name])
available_partitions.update(
self.cached_partitions[p_name]._children)
possible = set()
for p in available_partitions:
possible.add(p.size)
desired_size = 0
job_nodes = int(nodes)
for psize in sorted(possible):
if psize >= job_nodes:
desired_size = psize
break
for p in available_partitions.copy():
if p.size != desired_size:
available_partitions.remove(p)
elif p.name in self._not_functional_set:
available_partitions.remove(p)
elif requested_location and p.name != requested_location:
available_partitions.remove(p)
else:
for p in self.possible_locations(nodes, queue):
skip = False
for bad_name in forbidden:
if p.name == bad_name or bad_name in p.children or bad_name in p.parents:
skip = True
break
if not skip:
if (not requested_location) or (p.name
== requested_location):
available_partitions.add(p)
available_partitions -= drain_partitions
now = time.time()
for partition in available_partitions:
# if the job needs more time than the partition currently has available, look elsewhere
if backfilling:
if partition.reserved_by:
#if the partition is reserved, we don't use predicted walltime to backfill
runtime_estimate = float(walltime)
if 60 * runtime_estimate > (partition.backfill_time -
now): # *Adj_Est*
continue
if 60 * float(walltime) > (partition.backfill_time - now):
continue
if partition.state == "idle":
# let's check the impact on partitions that would become blocked
score = 0
for p in partition.parents:
if self.cached_partitions[
p].state == "idle" and self.cached_partitions[
p].scheduled:
score += 1
# the lower the score, the fewer new partitions will be blocked by this selection
if score < best_score:
best_score = score
best_partition = partition
if best_partition:
return {jobid: [best_partition.name]}
def _find_drain_partition(self, job):
# if the user requested a particular partition, we only try to drain that one
if job['attrs'].has_key("location"):
target_name = job['attrs']['location']
return self.cached_partitions.get(target_name, None)
drain_partition = None
locations = self.possible_locations(job['nodes'], job['queue'])
for p in locations:
if not drain_partition:
drain_partition = p
else:
if p.backfill_time < drain_partition.backfill_time:
drain_partition = p
if drain_partition:
# don't try to drain for an entire weekend
hours = (drain_partition.backfill_time - time.time()) / 3600.0
if hours > max_drain_hours:
drain_partition = None
return drain_partition
def possible_locations(self, job_nodes, q_name):
desired_size = 0
job_nodes = int(job_nodes)
if self._defined_sizes.has_key(q_name):
for psize in self._defined_sizes[q_name]:
if psize >= job_nodes:
desired_size = psize
break
if self._locations_cache.has_key(q_name):
return self._locations_cache[q_name].get(desired_size, [])
else:
return []
# this function builds three things, namely a pair of dictionaries keyed by queue names, and a set of
# partition names which are not functional
#
# self._defined_sizes maps queue names to an ordered list of partition sizes available in that queue
# for all schedulable partitions (even if currently offline and not functional)
# self._locations_cache maps queue names to dictionaries which map partition sizes to partition objects;
# this structure will only contain partitions which are fully online, so we don't try to drain a
# broken partition
# self._not_functional_set contains names of partitions which are not functional (either themselves, or
# a parent or child)
def _build_locations_cache(self):
per_queue = {}
defined_sizes = {}
not_functional_set = set()
for target_partition in self.cached_partitions.itervalues():
usable = True
if target_partition.name in self.offline_partitions:
usable = False
else:
for part in self.cached_partitions.itervalues():
if not part.functional:
not_functional_set.add(part.name)
if target_partition.name in part.children or target_partition.name in part.parents:
usable = False
not_functional_set.add(target_partition.name)
break
for queue_name in target_partition.queue.split(":"):
if not per_queue.has_key(queue_name):
per_queue[queue_name] = {}
if not defined_sizes.has_key(queue_name):
defined_sizes[queue_name] = set()
if target_partition.scheduled:
defined_sizes[queue_name].add(target_partition.size)
if target_partition.scheduled and target_partition.functional and usable:
if not per_queue[queue_name].has_key(
target_partition.size):
per_queue[queue_name][target_partition.size] = []
per_queue[queue_name][target_partition.size].append(
target_partition)
for q_name in defined_sizes:
defined_sizes[q_name] = sorted(defined_sizes[q_name])
self._defined_sizes = defined_sizes
self._locations_cache = per_queue
self._not_functional_set = not_functional_set
def find_job_location(self, arg_list, end_times):
best_partition_dict = {}
if self.bridge_in_error:
return {}
self._partitions_lock.acquire()
try:
self.cached_partitions = copy.deepcopy(self.partitions)
except:
self.logger.error("error in copy.deepcopy", exc_info=True)
return {}
finally:
self._partitions_lock.release()
# build the cached_partitions structure first
self._build_locations_cache()
# first, figure out backfilling cutoffs per partition (which we'll also use for picking which partition to drain)
job_end_times = {}
for item in end_times:
job_end_times[item[0][0]] = item[1]
now = time.time()
for p in self.cached_partitions.itervalues():
if p.state == "idle":
p.backfill_time = now
else:
p.backfill_time = now + 5 * 60
p.draining = False
for p in self.cached_partitions.itervalues():
if p.name in job_end_times:
if job_end_times[p.name] > p.backfill_time:
p.backfill_time = job_end_times[p.name]
for parent_name in p.parents:
parent_partition = self.cached_partitions[parent_name]
if p.backfill_time > parent_partition.backfill_time:
parent_partition.backfill_time = p.backfill_time
for p in self.cached_partitions.itervalues():
if p.backfill_time == now:
continue
for child_name in p.children:
child_partition = self.cached_partitions[child_name]
if child_partition.backfill_time == now or child_partition.backfill_time > p.backfill_time:
child_partition.backfill_time = p.backfill_time
# first time through, try for starting jobs based on utility scores
drain_partitions = set()
for job in arg_list:
partition_name = self._find_job_location(job, drain_partitions)
if partition_name:
best_partition_dict.update(partition_name)
break
location = self._find_drain_partition(job)
if location is not None:
for p_name in location.parents:
drain_partitions.add(self.cached_partitions[p_name])
for p_name in location.children:
drain_partitions.add(self.cached_partitions[p_name])
self.cached_partitions[p_name].draining = True
drain_partitions.add(location)
#self.logger.info("job %s is draining %s" % (winning_job['jobid'], location.name))
location.draining = True
# the next time through, try to backfill, but only if we couldn't find anything to start
if not best_partition_dict:
# arg_list.sort(self._walltimecmp)
for args in arg_list:
partition_name = self._find_job_location(args,
backfilling=True)
if partition_name:
self.logger.info("backfilling job %s" % args['jobid'])
best_partition_dict.update(partition_name)
break
# reserve the stuff in the best_partition_dict, as those partitions are allegedly going to
# be running jobs very soon
#
# also, this is the only part of finding a job location where we need to lock anything
self._partitions_lock.acquire()
try:
for p in self.partitions.itervalues():
# push the backfilling info from the local cache back to the real objects
p.draining = self.cached_partitions[p.name].draining
p.backfill_time = self.cached_partitions[p.name].backfill_time
for jobid, partition_list in best_partition_dict.iteritems():
part = self.partitions[partition_list[0]]
# FIXME: use reserve_resources_until() here? --brt
part.used_by = int(jobid)
part.reserved_until = time.time() + 5 * 60
part.state = "allocated"
for p in part._parents:
if p.state == "idle":
p.state = "blocked (%s)" % (part.name, )
for p in part._children:
if p.state == "idle":
p.state = "blocked (%s)" % (part.name, )
except:
self.logger.error("error in find_job_location", exc_info=True)
self._partitions_lock.release()
return best_partition_dict
find_job_location = locking(exposed(find_job_location))
def _walltimecmp(self, dict1, dict2):
return -cmp(float(dict1['walltime']), float(dict2['walltime']))
def find_queue_equivalence_classes(self, reservation_dict,
active_queue_names):
equiv = []
for part in self.partitions.itervalues():
if part.functional and part.scheduled:
part_active_queues = []
for q in part.queue.split(":"):
if q in active_queue_names:
part_active_queues.append(q)
# go on to the next partition if there are no running
# queues using this partition
if not part_active_queues:
continue
found_a_match = False
for e in equiv:
if e['data'].intersection(part.node_card_names):
e['queues'].update(part_active_queues)
e['data'].update(part.node_card_names)
found_a_match = True
break
if not found_a_match:
equiv.append({
'queues': set(part_active_queues),
'data': set(part.node_card_names),
'reservations': set()
})
real_equiv = []
for eq_class in equiv:
found_a_match = False
for e in real_equiv:
if e['queues'].intersection(eq_class['queues']):
e['queues'].update(eq_class['queues'])
e['data'].update(eq_class['data'])
found_a_match = True
break
if not found_a_match:
real_equiv.append(eq_class)
equiv = real_equiv
for eq_class in equiv:
for res_name in reservation_dict:
skip = True
for p_name in reservation_dict[res_name].split(":"):
p = self.partitions[p_name]
if eq_class['data'].intersection(p.node_card_names):
eq_class['reservations'].add(res_name)
for dep_name in p._wiring_conflicts:
if self.partitions.has_key(dep_name):
if eq_class['data'].intersection(
self.partitions[dep_name].node_card_names):
eq_class['reservations'].add(res_name)
break
for key in eq_class:
eq_class[key] = list(eq_class[key])
del eq_class['data']
return equiv
find_queue_equivalence_classes = exposed(find_queue_equivalence_classes)
def can_run(self, target_partition, node_count, partition_dict):
if target_partition.state != "idle":
return False
desired = sys.maxint
for part in partition_dict.itervalues():
if not part.functional:
if target_partition.name in part.children or target_partition.name in part.parents:
return False
else:
if part.scheduled:
if int(node_count) <= int(part.size) < desired:
desired = int(part.size)
return target_partition.scheduled and target_partition.functional and int(
target_partition.size) == desired
def reserve_resources_until(self, location, new_time, jobid):
rc = False
partition_name = location[0]
pg = self.process_groups.find_by_jobid(jobid)
try:
self._partitions_lock.acquire()
used_by = self.partitions[partition_name].used_by
if used_by == None:
self.partitions[partition_name].used_by = jobid
used_by = jobid
if new_time:
if used_by == jobid:
self.partitions[partition_name].reserved_until = new_time
self.partitions[partition_name].reserved_by = jobid
self.logger.info(
"job %s: partition '%s' now reserved until %s", jobid,
partition_name, time.asctime(time.gmtime(new_time)))
rc = True
else:
self.logger.error(
"job %s wasn't allowed to update the reservation on partition %s (owner=%s)",
jobid, partition_name, used_by)
else:
if used_by == jobid:
self.partitions[partition_name].reserved_until = False
self.partitions[partition_name].reserved_by = None
self.logger.info(
"reservation on partition '%s' has been removed",
partition_name)
rc = True
else:
self.logger.error(
"job %s wasn't allowed to clear the reservation on partition %s (owner=%s)",
jobid, partition_name, used_by)
except:
self.logger.exception(
"an unexpected error occurred will adjusting the partition reservation time"
)
finally:
self._partitions_lock.release()
return rc
reserve_resources_until = exposed(reserve_resources_until)
class ClusterBaseSystem(Component):
"""base system class.
Methods:
add_partitions -- tell the system to manage partitions (exposed, query)
get_partitions -- retrieve partitions in the simulator (exposed, query)
del_partitions -- tell the system not to manage partitions (exposed, query)
set_partitions -- change random attributes of partitions (exposed, query)
update_relatives -- should be called when partitions are added and removed from the managed list
"""
def __init__(self, *args, **kwargs):
Component.__init__(self, *args, **kwargs)
self.process_groups = ProcessGroupDict()
self.pending_diags = dict()
self.failed_diags = list()
self.all_nodes = sets.Set()
self.running_nodes = sets.Set()
self.down_nodes = sets.Set()
self.queue_assignments = {}
self.node_order = {}
try:
self.configure(CP.get("cluster_system", "hostfile"))
except:
self.logger.error("unable to load hostfile")
self.queue_assignments["default"] = sets.Set(self.all_nodes)
def __getstate__(self):
return {
"queue_assignments": self.queue_assignments,
"version": 1,
"down_nodes": self.down_nodes
}
def __setstate__(self, state):
self.queue_assignments = state["queue_assignments"]
self.down_nodes = state["down_nodes"]
self.process_groups = ProcessGroupDict()
self.pending_diags = dict()
self.failed_diags = list()
self.all_nodes = sets.Set()
self.running_nodes = sets.Set()
self.node_order = {}
try:
self.configure(CP.get("cluster_system", "hostfile"))
except:
self.logger.error("unable to load hostfile")
self.lock = threading.Lock()
self.statistics = Statistics()
def save_me(self):
Component.save(self)
save_me = automatic(save_me)
def validate_job(self, spec):
"""validate a job for submission
Arguments:
spec -- job specification dictionary
"""
# spec has {nodes, walltime*, procs, mode, kernel}
max_nodes = len(self.all_nodes)
# FIXME: is bgtype really needed for clusters?
try:
sys_type = CP.get('bgsystem', 'bgtype')
except:
sys_type = 'bgl'
if sys_type == 'bgp':
job_types = ['smp', 'dual', 'vn', 'script']
else:
job_types = ['co', 'vn', 'script']
try:
spec['nodecount'] = int(spec['nodecount'])
except:
raise JobValidationError("Non-integer node count")
if not 0 < spec['nodecount'] <= max_nodes:
raise JobValidationError("Node count out of realistic range")
if float(spec['time']) < 5:
raise JobValidationError("Walltime less than minimum")
if not spec['mode']:
if sys_type == 'bgp':
spec['mode'] = 'smp'
else:
spec['mode'] = 'co'
if spec['mode'] not in job_types:
raise JobValidationError("Invalid mode")
if not spec['proccount']:
if spec.get('mode', 'co') == 'vn':
if sys_type == 'bgl':
spec['proccount'] = str(2 * int(spec['nodecount']))
elif sys_type == 'bgp':
spec['proccount'] = str(4 * int(spec['nodecount']))
else:
self.logger.error("Unknown bgtype %s" % (sys_type))
elif spec.get('mode', 'co') == 'dual':
spec['proccount'] = 2 * int(spec['nodecount'])
else:
spec['proccount'] = spec['nodecount']
else:
try:
spec['proccount'] = int(spec['proccount'])
except:
JobValidationError("non-integer proccount")
if spec['proccount'] < 1:
raise JobValidationError("negative proccount")
if spec['proccount'] > spec['nodecount']:
if spec['mode'] not in ['vn', 'dual']:
raise JobValidationError("proccount too large")
if sys_type == 'bgl' and (spec['proccount'] >
(2 * spec['nodecount'])):
raise JobValidationError("proccount too large")
elif sys_type == ' bgp' and (spec['proccount'] >
(4 * spec['nodecount'])):
raise JobValidationError("proccount too large")
# need to handle kernel
return spec
validate_job = exposed(validate_job)
def run_diags(self, partition_list, test_name):
def size_cmp(left, right):
return -cmp(left.size, right.size)
def _find_covering(partition):
kids = [self._partitions[c_name] for c_name in partition.children]
kids.sort(size_cmp)
n = len(kids)
part_node_cards = sets.Set(partition.node_cards)
# generate the power set, but try to use the big partitions first (hence the sort above)
for i in xrange(1, 2**n + 1):
test_cover = [kids[j] for j in range(n) if i & 2**j]
test_node_cards = sets.Set()
for t in test_cover:
test_node_cards.update(t.node_cards)
if test_node_cards.issubset(
part_node_cards) and test_node_cards.issuperset(
part_node_cards):
return test_cover
return []
def _run_diags(partition):
covering = _find_covering(partition)
for child in covering:
self.pending_diags[child] = test_name
return [child.name for child in covering]
results = []
for partition_name in partition_list:
p = self._partitions[partition_name]
results.append(_run_diags(p))
return results
run_diags = exposed(run_diags)
def launch_diags(self, partition, test_name):
'''override this method in derived classes!'''
pass
def finish_diags(self, partition, test_name, exit_value):
'''call this method somewhere in your derived class where you deal with the exit values of diags'''
if exit_value == 0:
for dead in self.failed_diags[:]:
if dead == partition.name or dead in partition.children:
self.failed_diags.remove(dead)
self.logger.info("removing %s from failed_diags list" %
dead)
else:
if partition.children:
self.run_diags([partition.name], test_name)
else:
self.failed_diags.append(partition.name)
self.logger.info("adding %s to failed_diags list" %
partition.name)
def handle_pending_diags(self):
for p in self.pending_diags.keys():
if p.state in [
"idle", "blocked by pending diags", "failed diags",
"blocked by failed diags"
]:
self.logger.info("launching diagnostics on %s" % p.name)
self.launch_diags(p, self.pending_diags[p])
del self.pending_diags[p]
handle_pending_diags = automatic(handle_pending_diags)
def fail_partitions(self, specs):
parts = self.get_partitions(specs)
if not parts:
ret = "no matching partitions found\n"
else:
ret = ""
for p in parts:
if self.failed_diags.count(p.name) == 0:
ret += "failing %s\n" % p.name
self.failed_diags.append(p.name)
else:
ret += "%s is already marked as failing\n" % p.name
return ret
fail_partitions = exposed(fail_partitions)
def unfail_partitions(self, specs):
parts = self.get_partitions(specs)
if not parts:
ret = "no matching partitions found\n"
else:
ret = ""
for p in self.get_partitions(specs):
if self.failed_diags.count(p.name):
ret += "unfailing %s\n" % p.name
self.failed_diags.remove(p.name)
else:
ret += "%s is not currently failing\n" % p.name
return ret
unfail_partitions = exposed(unfail_partitions)
def _find_job_location(self, args):
nodes = int(args['nodes'])
jobid = args['jobid']
available_nodes = self._get_available_nodes(args)
if nodes <= len(available_nodes):
return {jobid: [available_nodes.pop() for i in range(nodes)]}
else:
return None
def _get_available_nodes(self, args):
queue = args['queue']
forbidden = args.get("forbidden", [])
required = args.get("required", [])
if required:
available_nodes = sets.Set(required)
else:
available_nodes = self.queue_assignments[queue].difference(
forbidden)
available_nodes = available_nodes.difference(self.running_nodes)
available_nodes = available_nodes.difference(self.down_nodes)
return available_nodes
def _backfill_cmp(self, left, right):
return cmp(left[1], right[1])
# the argument "required" is used to pass in the set of locations allowed by a reservation;
def find_job_location(self, arg_list, end_times):
best_location_dict = {}
winner = arg_list[0]
# first time through, try for starting jobs based on utility scores
for args in arg_list:
location_data = self._find_job_location(args)
if location_data:
best_location_dict.update(location_data)
break
# the next time through, try to backfill, but only if we couldn't find anything to start
if not best_location_dict:
job_end_times = {}
total = 0
for item in sorted(end_times, cmp=self._backfill_cmp):
total += len(item[0])
job_end_times[total] = item[1]
needed = winner['nodes'] - len(self._get_available_nodes(winner))
now = time.time()
backfill_cutoff = 0
for num in sorted(job_end_times):
if needed <= num:
backfill_cutoff = job_end_times[num] - now
for args in arg_list:
if 60 * float(args['walltime']) > backfill_cutoff:
continue
location_data = self._find_job_location(args)
if location_data:
best_location_dict.update(location_data)
self.logger.info("backfilling job %s" % args['jobid'])
break
# reserve the stuff in the best_partition_dict, as those partitions are allegedly going to
# be running jobs very soon
for location_list in best_location_dict.itervalues():
self.running_nodes.update(location_list)
return best_location_dict
find_job_location = exposed(find_job_location)
def _walltimecmp(self, dict1, dict2):
return -cmp(float(dict1['walltime']), float(dict2['walltime']))
def find_queue_equivalence_classes(self, reservation_dict,
active_queue_names):
equiv = []
for q in self.queue_assignments:
# skip queues that aren't "running"
if not q in active_queue_names:
continue
found_a_match = False
for e in equiv:
if e['data'].intersection(self.queue_assignments[q]):
e['queues'].add(q)
e['data'].update(self.queue_assignments[q])
found_a_match = True
break
if not found_a_match:
equiv.append({
'queues': set([q]),
'data': set(self.queue_assignments[q]),
'reservations': set()
})
real_equiv = []
for eq_class in equiv:
found_a_match = False
for e in real_equiv:
if e['queues'].intersection(eq_class['queues']):
e['queues'].update(eq_class['queues'])
e['data'].update(eq_class['data'])
found_a_match = True
break
if not found_a_match:
real_equiv.append(eq_class)
equiv = real_equiv
for eq_class in equiv:
for res_name in reservation_dict:
skip = True
for host_name in reservation_dict[res_name].split(":"):
if host_name in eq_class['data']:
eq_class['reservations'].add(res_name)
for key in eq_class:
eq_class[key] = list(eq_class[key])
del eq_class['data']
return equiv
find_queue_equivalence_classes = exposed(find_queue_equivalence_classes)
def reserve_resources_until(self, location, time, jobid):
if time is None:
for host in location:
self.running_nodes.discard(host)
self.logger.info("hasty job kill: freeing %s" % host)
else:
self.logger.error("failed to reserve location '%r' until '%s'" %
(location, time))
reserve_resources_until = exposed(reserve_resources_until)
def nodes_up(self, node_list, user_name=None):
changed = []
for n in node_list:
if n in self.down_nodes:
self.down_nodes.remove(n)
changed.append(n)
if n in self.running_nodes:
self.running_nodes.remove(n)
changed.append(n)
if changed:
self.logger.info("%s marking nodes up: %s", user_name,
", ".join(changed))
return changed
nodes_up = exposed(nodes_up)
def nodes_down(self, node_list, user_name=None):
changed = []
for n in node_list:
if n in self.all_nodes:
self.down_nodes.add(n)
changed.append(n)
if changed:
self.logger.info("%s marking nodes down: %s", user_name,
", ".join(changed))
return changed
nodes_down = exposed(nodes_down)
def get_node_status(self):
def my_cmp(left, right):
return cmp(left[2], right[2])
status_list = []
for n in self.all_nodes:
if n in self.running_nodes:
status = "allocated"
elif n in self.down_nodes:
status = "down"
else:
status = "idle"
status_list.append((n, status, self.node_order[n]))
status_list.sort(my_cmp)
return status_list
get_node_status = exposed(get_node_status)
def get_queue_assignments(self):
ret = {}
for q in self.queue_assignments:
ret[q] = list(self.queue_assignments[q])
return ret
get_queue_assignments = exposed(get_queue_assignments)
def set_queue_assignments(self, queue_names, node_list, user_name=None):
checked_nodes = sets.Set()
for n in node_list:
if n in self.all_nodes:
checked_nodes.add(n)
queue_list = queue_names.split(":")
for q in queue_list:
if q not in self.queue_assignments:
self.queue_assignments[q] = sets.Set()
for q in self.queue_assignments.keys():
if q not in queue_list:
self.queue_assignments[q].difference_update(checked_nodes)
if len(self.queue_assignments[q]) == 0:
del self.queue_assignments[q]
else:
self.queue_assignments[q].update(checked_nodes)
self.logger.info("%s assigning queues %s to nodes %s", user_name,
queue_names, " ".join(checked_nodes))
return list(checked_nodes)
set_queue_assignments = exposed(set_queue_assignments)
def verify_locations(self, location_list):
"""Providing a system agnostic interface for making sure a 'location string' is valid"""
ret = []
for l in location_list:
if l in self.all_nodes:
ret.append(l)
return ret
verify_locations = exposed(verify_locations)
def configure(self, filename):
f = open(filename)
counter = 0
for line in f:
name = line.strip()
self.all_nodes.add(name)
self.node_order[name] = counter
counter += 1
f.close()
# this gets called by bgsched in order to figure out if there are partition overlaps;
# it was written to provide the data that bgsched asks for and raises an exception
# if you try to ask for more
def get_partitions(self, specs):
partitions = []
for spec in specs:
item = {}
for n in self.all_nodes:
if "name" in spec:
if spec["name"] == '*':
item.update({"name": n})
elif spec["name"] == n:
item.update({"name": n})
if "name" in spec:
spec.pop("name")
if "children" in spec:
item.update({"children": []})
spec.pop("children")
if "parents" in spec:
item.update({"parents": []})
spec.pop("parents")
if spec:
raise NotSupportedError("clusters lack information on: %s" %
", ".join(spec.keys()))
if item:
partitions.append(item)
return partitions
get_partitions = exposed(get_partitions)
class Simulator(BGBaseSystem):
"""Generic system simulator.
Methods:
configure -- load partitions from an xml file
reserve_partition -- lock a partition for use by a process_group (exposed)
release_partition -- release a locked (busy) partition (exposed)
add_process_groups -- add (start) a process group on the system (exposed, query)
get_process_groups -- retrieve process groups (exposed, query)
wait_process_groups -- get process groups that have exited, and remove them from the system (exposed, query)
signal_process_groups -- send a signal to the head process of the specified process groups (exposed, query)
update_partition_state -- simulates updating partition state from the bridge API (automatic)
"""
name = "system"
implementation = "simulator"
logger = logger
def __init__(self, *args, **kwargs):
BGBaseSystem.__init__(self, *args, **kwargs)
sys.setrecursionlimit(5000) #why this magic number?
self.process_groups.item_cls = BGSimProcessGroup
self.node_card_cache = dict()
self.failed_components = set()
self.config_file = kwargs.get(
"config_file",
get_config_option('bgsystem', 'system_def_file', None))
if self.config_file is not None:
self.logger.log(1, "init: loading machine configuration")
self.configure(self.config_file)
self.logger.log(1, "init: recomputing partition state")
self._recompute_partition_state()
def __getstate__(self):
state = {}
state.update(BGBaseSystem.__getstate__(self))
state.update({
'simulator_version': 4,
'config_file': self.config_file,
'failed_components': self.failed_components
})
return state
def __setstate__(self, state):
try:
self.logger.log(1, "restart: initializing base system class")
BGBaseSystem.__setstate__(self, state)
self.process_groups.item_cls = BGSimProcessGroup
self.node_card_cache = dict()
try:
self.failed_components = state['failed_components']
except KeyError:
self.failed_components = set()
try:
self.config_file = state['config_file']
except KeyError:
self.config_file = os.path.expandvars(
get_config_option('system', 'def_file', ""))
if self.config_file:
self.logger.log(1, "restart: loading machine configuration")
self.configure(self.config_file)
self.logger.log(1, "restart: restoring partition state")
self._restore_partition_state(state)
self.logger.log(1, "restart: recomputing partition state")
self._recompute_partition_state()
except:
self.logger.error(
"A fatal error occurred while restarting the system component",
exc_info=True)
print "A fatal error occurred while restarting the system component. Terminating."
sys.exit(1)
def save_me(self):
Component.save(self)
save_me = automatic(
save_me, float(get_config_option('bgsystem', 'save_me_interval', 10)))
def _recompute_partition_state(self):
self.offline_partitions = []
for p in self._partitions.values():
if p.state != 'idle':
continue
for part_name in self.failed_partitions:
try:
part = self._partitions[part_name]
except KeyError:
pass
else:
if p == part:
p.state = "failed diags"
break
elif p in part._parents or p in part._children:
p.state = "blocked (%s)" % (part.name, )
break
if p.state != 'idle':
continue
for nc in p.node_cards:
if nc.id in self.failed_components:
p.state = "hardware offline: nodecard %s" % nc.id
self.offline_partitions.append(p.name)
break
elif nc.used_by:
p.state = "blocked (%s)" % nc.used_by
break
if p.state != 'idle':
continue
for s in p.switches:
if s in self.failed_components:
p.state = "hardware offline: switch %s" % (s, )
self.offline_partitions.append(p.name)
break
if p.state != 'idle':
continue
for w in p.wires:
if w in self.failed_components:
p.state = "hardware offline: switch %s" % (w, )
self.offline_partitions.append(p.name)
break
if p.state != 'idle':
continue
for dep_name in p._wiring_conflicts:
try:
part = self._partitions[dep_name]
except KeyError:
self.logger.warning(
"partition %s: wiring conflict %s does not exist in partition table",
p.name, dep_name)
else:
if part.state == "busy" or part.used_by:
p.state = "blocked-wiring (%s)" % dep_name
break
if p.state != 'idle':
continue
if p.used_by:
p.state = "allocated"
continue
for part in p._parents.union(p._children):
if part.used_by:
p.state = "blocked (%s)" % (part.name, )
break
def configure(self, config_file):
"""
Configure simulated partitions.
Arguments:
config_file -- xml configuration file
"""
self.logger.log(1, "configure: opening machine configuration file")
def _get_node_card(name):
if not self.node_card_cache.has_key(name):
self.node_card_cache[name] = NodeCard(name)
return self.node_card_cache[name]
try:
system_doc = ElementTree.parse(config_file)
except IOError:
self.logger.error("unable to open file: %r" % config_file)
self.logger.error("exiting...")
sys.exit(1)
except:
self.logger.error("problem loading data from file: %r" %
config_file,
exc_info=True)
self.logger.error("exiting...")
sys.exit(1)
system_def = system_doc.getroot()
if system_def.tag != "BG":
self.logger.error("unexpected root element in %r: %r" %
(config_file, system_def.tag))
self.logger.error("exiting...")
sys.exit(1)
# that 32 is not really constant -- it needs to either be read from cobalt.conf or from the bridge API
NODES_PER_NODECARD = 32
# initialize a new partition dict with all partitions
#
partitions = PartitionDict()
tmp_list = []
# this is going to hold partition objects from the bridge (not our own Partition)
self.logger.log(
1,
"configure: acquiring machine information and creating partition objects"
)
self._partitions.clear()
for partition_def in system_def.getiterator("Partition"):
node_list = []
switch_list = []
wire_list = []
for nc in partition_def.getiterator("NodeCard"):
node_list.append(_get_node_card(nc.get("id")))
nc_count = len(node_list)
for s in partition_def.getiterator("Switch"):
switch_list.append(s.get("id"))
for w in partition_def.getiterator("Wire"):
wire_list.append(w.get("id"))
self._partitions.q_add([
dict(
name=partition_def.get("name"),
queue=partition_def.get("queue", "default"),
size=NODES_PER_NODECARD * nc_count,
node_cards=node_list,
switches=switch_list,
wires=wire_list,
state="idle",
)
])
# find the wiring deps
self.logger.log(1, "configure: looking for wiring dependencies")
for p in self._partitions.values():
self._detect_wiring_deps(p)
# update partition relationship lists
self.logger.log(1, "configure: updating partition relationship lists")
self.update_relatives()
def update_partition_state(self):
# first, set all of the nodecards to not busy
for nc in self.node_card_cache.values():
nc.used_by = ''
self._partitions_lock.acquire()
try:
# first determine if the partition and associate node cards are in use
now = time.time()
for p in self._partitions.values():
# since we don't have the bridge, a partition which isn't busy
# should be set to idle and then blocked states can be derived
if p.state != "busy":
p.state = "idle"
# check if the partition is not longer reserved or the reservation has expired
if p.used_by:
if not p.reserved_until or now > p.reserved_until:
p.reserved_until = None
p.reserved_by = None
p.used_by = None
# for now, assume cleanup happens instantaneously
p.state = 'idle'
p._update_node_cards()
# then set parition states based on that usage as well as failed hardware, resource reservations, etc.
self._recompute_partition_state()
except:
self.logger.error("error in update_partition_state", exc_info=True)
self._partitions_lock.release()
update_partition_state = automatic(update_partition_state)
def _mark_partition_for_cleaning(self, pname, jobid):
pass
def _set_kernel(self, partition, kernel):
# TODO: allow the kernel set step to work in the simulator. For now this doesn't fly.
pass
def reserve_partition(self, name, size=None):
"""Reserve a partition and block all related partitions.
Arguments:
name -- name of the partition to reserve
size -- size of the process group reserving the partition (optional)
"""
try:
self._partitions_lock.acquire()
try:
partition = self.partitions[name]
except KeyError:
self.logger.error(
"reserve_partition(%r, %r) [does not exist]" %
(name, size))
return False
if partition.state != "allocated":
self.logger.error("reserve_partition(%r, %r) [%s]" %
(name, size, partition.state))
return False
if not partition.functional:
self.logger.error(
"reserve_partition(%r, %r) [not functional]" %
(name, size))
return False
if size is not None and size > partition.size:
self.logger.error("reserve_partition(%r, %r) [size mismatch]" %
(name, size))
return False
partition.state = "busy"
# partition.reserved_until = False
finally:
self._partitions_lock.release()
# explicitly call this, since the above "busy" is instantaneously available
self.update_partition_state()
self.logger.info("reserve_partition(%r, %r)" % (name, size))
return True
reserve_partition = exposed(reserve_partition)
def release_partition(self, name):
"""Release a reserved partition.
Arguments:
name -- name of the partition to release
"""
try:
self._partitions_lock.acquire()
try:
partition = self.partitions[name]
except KeyError:
self.logger.error("release_partition(%r) [already free]" %
(name))
return False
if not partition.state == "busy":
self.logger.info("release_partition(%r) [not busy]" % (name))
return False
if partition.used_by is not None:
partition.state = "allocated"
else:
partition.state = "idle"
finally:
self._partitions_lock.release()
# explicitly unblock the blocked partitions
self.update_partition_state()
self.logger.info("release_partition(%r)" % (name))
return True
release_partition = exposed(release_partition)
def add_failed_components(self, component_names):
success = []
for name in component_names:
if self.node_card_cache.has_key(name):
self.failed_components.add(name)
success.append(name)
else:
for p in self._partitions.values():
if name in p.switches:
self.failed_components.add(name)
success.append(name)
break
return success
add_failed_component = exposed(add_failed_components)
def del_failed_components(self, component_names):
success = []
for name in component_names:
try:
self.failed_components.remove(name)
success.append(name)
except KeyError:
pass
return success
del_failed_components = exposed(del_failed_components)
def list_failed_components(self, component_names):
return list(self.failed_components)
list_failed_components = exposed(list_failed_components)
"""Ping each service to check its availability.
Unregister unresponsive services.
"""
for service in self.services.values():
try:
ServerProxy(service.location).ping()
except socket.error, e:
self.logger.warn("unable to contact %s [%s]" %
(service.name, e))
self.unregister(service.name)
except Exception, e:
self.logger.error("error in %s (%s)" % (service.name, e))
self.unregister(service.name)
check_services = automatic(check_services)
class TimingServiceLocator(ServiceLocator):
"""ServiceLocator with passive expiration.
Attributes:
expire -- number of seconds to expire a service
Methods:
expire_services -- check service timestamps (automatic)
"""
implementation = "slp"
logger = logging.getLogger("Cobalt.Components.TimingServiceLocator")
class ClusterBaseSystem (Component):
"""base system class.
Methods:
add_partitions -- tell the system to manage partitions (exposed, query)
get_partitions -- retrieve partitions in the simulator (exposed, query)
del_partitions -- tell the system not to manage partitions (exposed, query)
set_partitions -- change random attributes of partitions (exposed, query)
update_relatives -- should be called when partitions are added and removed from the managed list
"""
global cluster_hostfile
def __init__ (self, *args, **kwargs):
Component.__init__(self, *args, **kwargs)
self.process_groups = ProcessGroupDict()
self.all_nodes = set()
self.running_nodes = set()
self.down_nodes = set()
self.queue_assignments = {}
self.node_order = {}
try:
self.configure(cluster_hostfile)
except:
self.logger.error("unable to load hostfile")
self.queue_assignments["default"] = set(self.all_nodes)
self.alloc_only_nodes = {} # nodename:starttime
self.cleaning_processes = []
#keep track of which jobs still have hosts being cleaned
self.cleaning_host_count = {} # jobid:count
self.locations_by_jobid = {} #jobid:[locations]
self.jobid_to_user = {} #jobid:username
self.alloc_timeout = int(get_cluster_system_config("allocation_timeout", 300))
self.logger.info("allocation timeout set to %d seconds." % self.alloc_timeout)
def __getstate__(self):
state = {}
state.update(Component.__getstate__(self))
state.update({
"cluster_base_version": 1,
"queue_assignments": self.queue_assignments,
"down_nodes": self.down_nodes })
return state
def __setstate__(self, state):
Component.__setstate__(self, state)
self.queue_assignments = state["queue_assignments"]
self.down_nodes = state["down_nodes"]
self.process_groups = ProcessGroupDict()
self.all_nodes = set()
self.running_nodes = set()
self.node_order = {}
try:
self.configure(cluster_hostfile)
except:
self.logger.error("unable to load hostfile")
self.alloc_only_nodes = {} # nodename:starttime
if not state.has_key("cleaning_processes"):
self.cleaning_processes = []
self.cleaning_host_count = {} # jobid:count
self.locations_by_jobid = {} #jobid:[locations]
self.jobid_to_user = {} #jobid:username
self.alloc_timeout = int(get_cluster_system_config("allocation_timeout", 300))
self.logger.info("allocation timeout set to %d seconds." % self.alloc_timeout)
def save_me(self):
Component.save(self)
save_me = automatic(save_me)
def validate_job(self, spec):
"""validate a job for submission
Arguments:
spec -- job specification dictionary
"""
# spec has {nodes, walltime*, procs, mode, kernel}
max_nodes = len(self.all_nodes)
# FIXME: is bgtype really needed for clusters?
try:
sys_type = CP.get('bgsystem', 'bgtype')
except:
sys_type = 'bgl'
if sys_type == 'bgp':
job_types = ['smp', 'dual', 'vn', 'script']
else:
job_types = ['co', 'vn', 'script']
try:
spec['nodecount'] = int(spec['nodecount'])
except:
raise JobValidationError("Non-integer node count")
if not 0 < spec['nodecount'] <= max_nodes:
raise JobValidationError("Node count out of realistic range")
if float(spec['time']) < 5:
raise JobValidationError("Walltime less than minimum")
if not spec['mode']:
if sys_type == 'bgp':
spec['mode'] = 'smp'
else:
spec['mode'] = 'co'
if spec['mode'] not in job_types:
raise JobValidationError("Invalid mode")
if not spec['proccount']:
if spec.get('mode', 'co') == 'vn':
if sys_type == 'bgl':
spec['proccount'] = str(2 * int(spec['nodecount']))
elif sys_type == 'bgp':
spec['proccount'] = str(4 * int(spec['nodecount']))
else:
self.logger.error("Unknown bgtype %s" % (sys_type))
elif spec.get('mode', 'co') == 'dual':
spec['proccount'] = 2 * int(spec['nodecount'])
else:
spec['proccount'] = spec['nodecount']
else:
try:
spec['proccount'] = int(spec['proccount'])
except:
JobValidationError("non-integer proccount")
if spec['proccount'] < 1:
raise JobValidationError("negative proccount")
if spec['proccount'] > spec['nodecount']:
if spec['mode'] not in ['vn', 'dual']:
raise JobValidationError("proccount too large")
if sys_type == 'bgl' and (spec['proccount'] > (2 * spec['nodecount'])):
raise JobValidationError("proccount too large")
elif sys_type == ' bgp'and (spec['proccount'] > (4 * spec['nodecount'])):
raise JobValidationError("proccount too large")
# need to handle kernel
return spec
validate_job = exposed(validate_job)
#there is absolutely no reason for this to exist in cluster_systems at this point. --PMR
def run_diags(self, partition_list, test_name):
self.logger.error("Run_diags not used on cluster systems.")
return None
run_diags = exposed(run_diags)
def launch_diags(self, partition, test_name):
'''override this method in derived classes!'''
raise NotImplementedError("launch_diags is not implemented by this class.")
def finish_diags(self, partition, test_name, exit_value):
'''call this method somewhere in your derived class where you deal with the exit values of diags'''
raise NotImplementedError("Finish diags not implemented in this class.")
def handle_pending_diags(self):
'''implement to handle diags that are still running.
'''
raise NotImplementedError("handle_pending_diags not implemented in this class.")
#can't automate what isn't there
#handle_pending_diags = automatic(handle_pending_diags)
def fail_partitions(self, specs):
self.logger.error("Fail_partitions not used on cluster systems.")
return ""
fail_partitions = exposed(fail_partitions)
def unfail_partitions(self, specs):
self.logger.error("unfail_partitions not used on cluster systems.")
return ""
unfail_partitions = exposed(unfail_partitions)
def _find_job_location(self, args):
nodes = args['nodes']
jobid = args['jobid']
available_nodes = self._get_available_nodes(args)
if nodes <= len(available_nodes):
return {jobid: [available_nodes.pop() for i in range(nodes)]}
else:
return None
def _get_available_nodes(self, args):
queue = args['queue']
forbidden = args.get("forbidden", [])
required = args.get("required", [])
if required:
available_nodes = set(required)
else:
available_nodes = self.queue_assignments[queue].difference(forbidden)
available_nodes = available_nodes.difference(self.running_nodes)
available_nodes = available_nodes.difference(self.down_nodes)
return available_nodes
def _backfill_cmp(self, left, right):
return cmp(left[1], right[1])
# the argument "required" is used to pass in the set of locations allowed by a reservation;
def find_job_location(self, arg_list, end_times):
best_location_dict = {}
winner = arg_list[0]
jobid = None
user = None
# first time through, try for starting jobs based on utility scores
for args in arg_list:
location_data = self._find_job_location(args)
if location_data:
best_location_dict.update(location_data)
jobid = int(args['jobid'])
user = args['user']
break
# the next time through, try to backfill, but only if we couldn't find anything to start
if not best_location_dict:
job_end_times = {}
total = 0
for item in sorted(end_times, cmp=self._backfill_cmp):
total += len(item[0])
job_end_times[total] = item[1]
needed = winner['nodes'] - len(self._get_available_nodes(winner))
now = time.time()
backfill_cutoff = 0
for num in sorted(job_end_times):
if needed <= num:
backfill_cutoff = job_end_times[num] - now
for args in arg_list:
if 60*float(args['walltime']) > backfill_cutoff:
continue
location_data = self._find_job_location(args)
if location_data:
best_location_dict.update(location_data)
self.logger.info("backfilling job %s" % args['jobid'])
jobid = int(args['jobid'])
user = args['user']
break
# reserve the stuff in the best_partition_dict, as those partitions are allegedly going to
# be running jobs very soon
for jobid_str, location_list in best_location_dict.iteritems():
self.running_nodes.update(location_list)
self.logger.info("Job %s: Allocating nodes: %s" % (int(jobid_str), location_list))
#just in case we're not going to be running a job soon, and have to
#return this to the pool:
self.jobid_to_user[jobid] = user
alloc_time = time.time()
for location in location_list:
self.alloc_only_nodes[location] = alloc_time
self.locations_by_jobid[jobid] = location_list
return best_location_dict
find_job_location = exposed(find_job_location)
def check_alloc_only_nodes(self):
loc_to_release = []
jobids = []
check_time = time.time()
dead_locations = []
for location, start_time in self.alloc_only_nodes.iteritems():
if int(check_time) - int(start_time) > self.alloc_timeout:
self.logger.warning("Location: %s: released. Time between "\
"allocation and run exceeded.", location)
dead_locations.append(location)
if dead_locations == []:
#well we don't have anything dying this time.
return
for jobid, locations in self.locations_by_jobid.iteritems():
clear_from_dead_locations = False
for location in locations:
if location in dead_locations:
clear_from_dead_locations = True
if jobid not in jobids:
jobids.append(jobid)
#bagging the jobid will cause all locs assoc with job to be
#cleaned so clear them out to make this faster
if clear_from_dead_locations:
for location in locations:
dead_locations.remove(location)
if dead_locations == []:
#well we don't have anything dying this time.
break
self.invoke_node_cleanup(jobids)
check_alloc_only_nodes = automatic(check_alloc_only_nodes,
get_cluster_system_config("automatic_method_interval",10.0))
def invoke_node_cleanup(self, jobids):
'''Invoke cleanup for nodes that have exceeded their allocated time
'''
for jobid in jobids:
user = self.jobid_to_user[jobid]
locations = self.locations_by_jobid[jobid]
for location in locations:
del self.alloc_only_nodes[location]
self.clean_nodes(locations, user, jobid)
def _walltimecmp(self, dict1, dict2):
return -cmp(float(dict1['walltime']), float(dict2['walltime']))
def find_queue_equivalence_classes(self, reservation_dict, active_queue_names):
equiv = []
for q in self.queue_assignments:
# skip queues that aren't "running"
if not q in active_queue_names:
continue
found_a_match = False
for e in equiv:
if e['data'].intersection(self.queue_assignments[q]):
e['queues'].add(q)
e['data'].update(self.queue_assignments[q])
found_a_match = True
break
if not found_a_match:
equiv.append( { 'queues': set([q]), 'data': set(self.queue_assignments[q]), 'reservations': set() } )
real_equiv = []
for eq_class in equiv:
found_a_match = False
for e in real_equiv:
if e['queues'].intersection(eq_class['queues']):
e['queues'].update(eq_class['queues'])
e['data'].update(eq_class['data'])
found_a_match = True
break
if not found_a_match:
real_equiv.append(eq_class)
equiv = real_equiv
for eq_class in equiv:
for res_name in reservation_dict:
skip = True
for host_name in reservation_dict[res_name].split(":"):
if host_name in eq_class['data']:
eq_class['reservations'].add(res_name)
for key in eq_class:
eq_class[key] = list(eq_class[key])
del eq_class['data']
return equiv
find_queue_equivalence_classes = exposed(find_queue_equivalence_classes)
def reserve_resources_until(self, location, time, jobid):
if time is None:
for host in location:
self.running_nodes.discard(host)
self.logger.info("hasty job kill: freeing %s" % host)
else:
self.logger.error("failed to reserve location '%r' until '%s'" % (location, time))
reserve_resources_until = exposed(reserve_resources_until)
def nodes_up(self, node_list, user_name=None):
changed = []
for n in node_list:
if n in self.down_nodes:
self.down_nodes.remove(n)
changed.append(n)
if n in self.running_nodes:
self.running_nodes.remove(n)
changed.append(n)
if changed:
self.logger.info("%s marking nodes up: %s", user_name, ", ".join(changed))
return changed
nodes_up = exposed(nodes_up)
def nodes_down(self, node_list, user_name=None):
changed = []
for n in node_list:
if n in self.all_nodes:
self.down_nodes.add(n)
changed.append(n)
if changed:
self.logger.info("%s marking nodes down: %s", user_name, ", ".join(changed))
return changed
nodes_down = exposed(nodes_down)
def get_node_status(self):
def my_cmp(left, right):
return cmp(left[2], right[2])
status_list = []
for n in self.all_nodes:
if n in self.running_nodes:
status = "allocated"
elif n in self.down_nodes:
status = "down"
else:
status = "idle"
status_list.append( (n, status, self.node_order[n]) )
status_list.sort(my_cmp)
return status_list
get_node_status = exposed(get_node_status)
def get_queue_assignments(self):
ret = {}
for q in self.queue_assignments:
ret[q] = list(self.queue_assignments[q])
return ret
get_queue_assignments = exposed(get_queue_assignments)
def set_queue_assignments(self, queue_names, node_list, user_name=None):
checked_nodes = set()
for n in node_list:
if n in self.all_nodes:
checked_nodes.add(n)
queue_list = queue_names.split(":")
for q in queue_list:
if q not in self.queue_assignments:
self.queue_assignments[q] = set()
for q in self.queue_assignments.keys():
if q not in queue_list:
self.queue_assignments[q].difference_update(checked_nodes)
if len(self.queue_assignments[q])==0:
del self.queue_assignments[q]
else:
self.queue_assignments[q].update(checked_nodes)
self.logger.info("%s assigning queues %s to nodes %s", user_name, queue_names, " ".join(checked_nodes))
return list(checked_nodes)
set_queue_assignments = exposed(set_queue_assignments)
def verify_locations(self, location_list):
"""Providing a system agnostic interface for making sure a 'location string' is valid"""
ret = []
for l in location_list:
if l in self.all_nodes:
ret.append(l)
return ret
verify_locations = exposed(verify_locations)
def configure(self, filename):
f = open(filename)
counter = 0
for line in f:
name = line.strip()
self.all_nodes.add(name)
self.node_order[name] = counter
counter += 1
f.close()
# this gets called by bgsched in order to figure out if there are partition overlaps;
# it was written to provide the data that bgsched asks for and raises an exception
# if you try to ask for more
def get_partitions (self, specs):
partitions = []
for spec in specs:
item = {}
for n in self.all_nodes:
if "name" in spec:
if spec["name"] == '*':
item.update( {"name": n} )
elif spec["name"] == n:
item.update( {"name": n} )
if "name" in spec:
spec.pop("name")
if "children" in spec:
item.update( {"children": []} )
spec.pop("children")
if "parents" in spec:
item.update( {"parents": []} )
spec.pop("parents")
if spec:
raise NotSupportedError("clusters lack information on: %s" % ", ".join(spec.keys()))
if item:
partitions.append(item)
return partitions
get_partitions = exposed(get_partitions)
def clean_nodes(self, locations, user, jobid):
"""Given a process group, start cleaning the nodes that were involved.
The rest of the cleanup is done in check_done_cleaning.
"""
self.logger.info("Job %s/%s: starting node cleanup." , user, jobid)
try:
tmp_data = pwd.getpwnam(user)
groupid = tmp_data.pw_gid
group_name = grp.getgrgid(groupid)[0]
except KeyError:
group_name = ""
self.logger.error("Job %s/%s: unable to determine group name for epilogue" % (user, jobid))
self.cleaning_host_count[jobid] = 0
for host in locations:
h = host.split(":")[0]
cleaning_process_info ={
"host": h,
"cleaning_id": None,
"user": user,
"jobid": jobid,
"group": group_name,
"start_time":time.time(),
"completed":False,
"retry":False,
}
try:
cleaning_id = self.launch_script("epilogue", h, jobid, user,
group_name)
if cleaning_id == None:
#there was no script to run.
self.running_nodes.discard(cleaning_processes["host"])
return
self.cleaning_host_count[jobid] += 1
cleaning_process_info["cleaning_id"] = cleaning_id
self.cleaning_processes.append(cleaning_process_info)
except ComponentLookupError:
self.logger.warning("Job %s/%s: Error contacting forker "
"component. Will Retry until timeout." % (user, jobid))
cleaning_process_info["retry"] = True
self.cleaning_processes.append(cleaning_process_info)
self.cleaning_host_count[jobid] += 1
except:
self.logger.error("Job %s/%s: Failed to run epilogue on host "
"%s, marking node down", jobid, user, h, exc_info=True)
self.down_nodes.add(h)
self.running_nodes.discard(h)
def launch_script(self, config_option, host, jobid, user, group_name):
'''Start our script processes used for node prep and cleanup.
'''
script = get_cluster_system_config(config_option, None)
if script == None:
self.logger.error("Job %s/%s: %s not defined in the "\
"cluster_system section of the cobalt config file!",
user, jobid, config_option)
return None
else:
cmd = ["/usr/bin/ssh", host, script,
str(jobid), user, group_name]
return ComponentProxy("system_script_forker").fork(cmd, "system epilogue",
"Job %s/%s" % (jobid, user))
#def launch_cleaning_process(self, host, jobid, user, group_name):
# '''Ping the forker to launch the cleaning process.
#
# '''
# epilogue_script = get_cluster_system_config("epilogue", None)
# if epilogue_script == None:
# self.logger.error("Job %s/%s: epilogue not defined in the "\
# "cluster_system section of the cobalt config file!",
# user, jobid)
# return None
# else:
# cmd = ["/usr/bin/ssh", host, epilogue_script,
# str(jobid), user, group_name]
# return ComponentProxy("system_script_forker").fork(cmd, "system epilogue",
# "Job %s/%s" % (jobid, user))
def retry_cleaning_scripts(self):
'''Continue retrying scripts in the event that we have lost contact
with the forker component. Reset start-time to when script starts.
'''
for cleaning_process in self.cleaning_processes:
if cleaning_process['retry'] == True:
try:
cleaning_id = self.launch_script(
"epilogue",
cleaning_process["host"],
cleaning_process['jobid'],
cleaning_process['user'],
cleaning_process['group'])
cleaning_process["cleaning_id"] = cleaning_id
cleaning_process["start_time"] = time.time()
cleaning_process["retry"] = False
except ComponentLookupError:
self.logger.warning("Job %s/%s: Error contacting forker "
"component." % (pg.jobid, pg.user))
except:
self.logger.error("Job %s/%s: Failed to run epilogue on "
"host %s, marking node down", pg.jobid, pg.user, h,
exc_info=True)
self.cleaning_host_count[jobid] -= 1
self.down_nodes.add(h)
self.running_nodes.discard(h)
retry_cleaning_scripts = automatic(retry_cleaning_scripts,
get_cluster_system_config("automatic_method_interval", 10.0))
def check_done_cleaning(self):
"""Check to see if the processes we are using to clean up nodes
post-run are done. If they are, release the nodes back for general
consumption. If the cleanup fails for some reason, then mark the node
down and release it.
"""
if self.cleaning_processes == []:
#don't worry if we have nothing to cleanup
return
for cleaning_process in self.cleaning_processes:
#if we can't reach the forker, we've lost all the cleanup scripts.
#don't try and recover, just assume all nodes that were being
#cleaned are down. --PMR
if cleaning_process['retry'] == True:
continue #skip this. Try anyway, if component came back up.
jobid = cleaning_process['jobid']
user = cleaning_process['user']
try:
exit_status = ComponentProxy("system_script_forker").child_completed(
cleaning_process['cleaning_id'])
ComponentProxy("system_script_forker").child_cleanup(
[cleaning_process['cleaning_id']])
except ComponentLookupError:
self.logger.error("Job %s/%s: Error contacting forker "
"component. Running child processes are "
"unrecoverable." % (jobid, user))
return
if exit_status != None:
#we're done, this node is now free to be scheduled again.
self.running_nodes.discard(cleaning_process["host"])
cleaning_process["completed"] = True
self.cleaning_host_count[jobid] -= 1
else:
#timeout exceeded
if (time.time() - cleaning_process["start_time"] >
float(get_cluster_system_config("epilogue_timeout", 60.0))):
cleaning_process["completed"] = True
try:
forker = ComponentProxy("system_script_forker").signal(
cleaning_process['cleaning_id'], "SIGINT")
child_output = forker.get_child_data(
cleaning_process['cleaning_id'])
forker.child_cleanup([cleaning_process['cleaning_id']])
#mark as dirty and arrange to mark down.
self.down_nodes.add(cleaning_process['host'])
self.running_nodes.discard(cleaning_process['host'].host) # <---????check this!
self.logger.error("Job %s/%s: epilogue timed out on host %s, marking hosts down",
user, jobid, cleaning_process['host'])
self.logger.error("Job %s/%s: stderr from epilogue on host %s: [%s]",
user, jobid,
cleaning_process['host'],
child_output['stderr'].strip())
self.cleaning_host_count[jobid] -= 1
except ComponentLookupError:
self.logger.error("Job %s/%s: Error contacting forker "
"component. Running child processes are "
"unrecoverable." % (jobid, user))
if self.cleaning_host_count[jobid] == 0:
self.del_process_groups(jobid)
#clean up other cleanup-monitoring stuff
self.logger.info("Job %s/%s: job finished on %s",
user, jobid, Cobalt.Util.merge_nodelist(self.locations_by_jobid[jobid]))
del self.locations_by_jobid[jobid]
del self.jobid_to_user[jobid]
self.cleaning_processes = [cleaning_process for cleaning_process in self.cleaning_processes
if cleaning_process["completed"] == False]
check_done_cleaning = automatic(check_done_cleaning,
get_cluster_system_config("automatic_method_interval", 10.0))
def del_process_groups(self, jobid):
raise NotImplementedError("Must be overridden in child class")
class ProcessManager (Component):
"""Generic implementation of process-manager
Methods:
add_jobs -- add jobs to the process manager (exposed)
get_jobs -- query jobs from the process manager (exposed)
wait_jobs -- return and remove finished jobs (exposed)
signal_jobs -- send a signal to jobs (exposed)
check_jobs -- finish jobs that are no longer running on the system (automatic)
"""
name = "process-manager"
logger = logger
def __init__ (self, **kwargs):
Component.__init__(self, **kwargs)
self.jobs = JobDict()
def add_jobs (self, specs):
"""Add a job to the process manager."""
self.logger.info("add_jobs(%r)" % (specs))
jobs = self.jobs.q_add(specs)
system_specs = \
ComponentProxy("system").add_jobs([job.to_rx() for job in jobs])
for system_spec in system_specs:
job = self.jobs[system_spec['id']]
job.state = "running"
return jobs
add_jobs = exposed(query(add_jobs))
def get_jobs (self, specs):
"""Query jobs from the process mananger."""
self.logger.info("get_jobs(%r)" % (specs))
return self.jobs.q_get(specs)
get_jobs = exposed(query(get_jobs))
def wait_jobs (self, specs):
"""Removes and returns jobs that have finished."""
self.logger.info("wait_jobs(%r)" % (specs))
specs = [spec.copy() for spec in specs]
for spec in specs:
spec['state'] = "finished"
return self.jobs.q_del(specs)
wait_jobs = exposed(query(wait_jobs))
def signal_jobs (self, specs, signame="SIGTERM"):
"""Send a signal to existing job processes."""
self.logger.info("signal_jobs(%r, %r)" % (specs, signame))
return ComponentProxy("system").signal_jobs(specs, signame)
signal_jobs = exposed(signal_jobs)
def check_jobs (self):
"""Finish jobs that are no longer running on the system."""
self.logger.info("check_jobs()")
local_job_specs = [job.to_rx(["id"]) for job in self.jobs.values() if job.state != 'finished']
try:
system_job_specs = ComponentProxy("system").get_jobs(local_job_specs)
except ComponentLookupError:
self.logger.error("check_jobs() [unable to contact system]")
return
system_job_ids = [spec['id'] for spec in system_job_specs]
for job in self.jobs.values():
if job.id not in system_job_ids and job.state != "finished":
job.state = "finished"
check_jobs = automatic(check_jobs)
