def _work_queue_submit_wait(task_queue=multiprocessing.Queue(),
launch_cmd=None,
env=None,
collector_queue=multiprocessing.Queue(),
data_dir=".",
full=False,
shared_fs=False,
autolabel=False,
autolabel_window=None,
autocategory=False,
max_retries=0,
should_stop=None,
port=WORK_QUEUE_DEFAULT_PORT,
wq_log_dir=None,
project_password_file=None,
project_name=None):
"""Thread to handle Parsl app submissions to the Work Queue objects.
Takes in Parsl functions submitted using submit(), and creates a
Work Queue task with the appropriate specifications, which is then
submitted to Work Queue. After tasks are completed, processes the
exit status and exit code of the task, and sends results to the
Work Queue collector thread.
To avoid python's global interpreter lock with work queue's wait, this
function should be launched as a process, not as a lightweight thread. This
means that any communication should be done using the multiprocessing
module capabilities, rather than shared memory.
"""
logger.debug("Starting WorkQueue Submit/Wait Process")
setproctitle("parsl: Work Queue submit/wait")
# Enable debugging flags and create logging file
wq_debug_log = None
if wq_log_dir is not None:
logger.debug("Setting debugging flags and creating logging file")
wq_debug_log = os.path.join(wq_log_dir, "debug_log")
# Create WorkQueue queue object
logger.debug("Creating WorkQueue Object")
try:
logger.debug("Listening on port {}".format(port))
q = WorkQueue(port, debug_log=wq_debug_log)
except Exception as e:
logger.error("Unable to create WorkQueue object: {}".format(e))
raise e
# Specify WorkQueue queue attributes
if project_name:
q.specify_name(project_name)
if project_password_file:
q.specify_password_file(project_password_file)
if autolabel:
q.enable_monitoring()
if autolabel_window is not None:
q.tune('category-steady-n-tasks', autolabel_window)
# Only write logs when the wq_log_dir is specified, which it most likely will be
if wq_log_dir is not None:
wq_master_log = os.path.join(wq_log_dir, "master_log")
wq_trans_log = os.path.join(wq_log_dir, "transaction_log")
if full and autolabel:
wq_resource_log = os.path.join(wq_log_dir, "resource_logs")
q.enable_monitoring_full(dirname=wq_resource_log)
q.specify_log(wq_master_log)
q.specify_transactions_log(wq_trans_log)
orig_ppid = os.getppid()
result_file_of_task_id = {
} # Mapping taskid -> result file for active tasks.
while not should_stop.value:
# Monitor the task queue
ppid = os.getppid()
if ppid != orig_ppid:
logger.debug("new Process")
break
# Submit tasks
while task_queue.qsize() > 0 and not should_stop.value:
# Obtain task from task_queue
try:
task = task_queue.get(timeout=1)
logger.debug("Removing task from queue")
except queue.Empty:
continue
pkg_pfx = ""
if task.env_pkg is not None:
pkg_pfx = "./{} -e {} ".format(
os.path.basename(package_run_script),
os.path.basename(task.env_pkg))
# Create command string
logger.debug(launch_cmd)
command_str = launch_cmd.format(
package_prefix=pkg_pfx,
mapping=os.path.basename(task.map_file),
function=os.path.basename(task.function_file),
result=os.path.basename(task.result_file))
logger.debug(command_str)
# Create WorkQueue task for the command
logger.debug("Sending task {} with command: {}".format(
task.id, command_str))
try:
t = Task(command_str)
except Exception as e:
logger.error("Unable to create task: {}".format(e))
collector_queue.put_nowait(
WqTaskToParsl(
id=task.id,
result_received=False,
result=None,
reason="task could not be created by work queue",
status=-1))
continue
t.specify_category(task.category)
if autolabel:
q.specify_category_mode(
task.category, WORK_QUEUE_ALLOCATION_MODE_MAX_THROUGHPUT)
if task.cores is not None:
t.specify_cores(task.cores)
if task.memory is not None:
t.specify_memory(task.memory)
if task.disk is not None:
t.specify_disk(task.disk)
if task.gpus is not None:
t.specify_gpus(task.gpus)
if task.priority is not None:
t.specify_priority(task.priority)
if task.running_time_min is not None:
t.specify_running_time_min(task.running_time_min)
if max_retries is not None:
logger.debug(f"Specifying max_retries {max_retries}")
t.specify_max_retries(max_retries)
else:
logger.debug("Not specifying max_retries")
# Specify environment variables for the task
if env is not None:
for var in env:
t.specify_environment_variable(var, env[var])
if task.env_pkg is not None:
t.specify_input_file(package_run_script, cache=True)
t.specify_input_file(task.env_pkg, cache=True)
# Specify script, and data/result files for task
t.specify_input_file(exec_parsl_function.__file__, cache=True)
t.specify_input_file(task.function_file, cache=False)
t.specify_input_file(task.map_file, cache=False)
t.specify_output_file(task.result_file, cache=False)
t.specify_tag(str(task.id))
result_file_of_task_id[str(task.id)] = task.result_file
logger.debug("Parsl ID: {}".format(task.id))
# Specify input/output files that need to be staged.
# Absolute paths are assumed to be in shared filesystem, and thus
# not staged by work queue.
if not shared_fs:
for spec in task.input_files:
if spec.stage:
t.specify_input_file(spec.parsl_name,
spec.parsl_name,
cache=spec.cache)
for spec in task.output_files:
if spec.stage:
t.specify_output_file(spec.parsl_name,
spec.parsl_name,
cache=spec.cache)
# Submit the task to the WorkQueue object
logger.debug("Submitting task {} to WorkQueue".format(task.id))
try:
wq_id = q.submit(t)
except Exception as e:
logger.error(
"Unable to submit task to work queue: {}".format(e))
collector_queue.put_nowait(
WqTaskToParsl(
id=task.id,
result_received=False,
result=None,
reason="task could not be submited to work queue",
status=-1))
continue
logger.info("Task {} submitted to WorkQueue with id {}".format(
task.id, wq_id))
# If the queue is not empty wait on the WorkQueue queue for a task
task_found = True
if not q.empty():
while task_found and not should_stop.value:
# Obtain the task from the queue
t = q.wait(1)
if t is None:
task_found = False
continue
# When a task is found:
parsl_id = t.tag
logger.debug(
"Completed WorkQueue task {}, parsl task {}".format(
t.id, t.tag))
result_file = result_file_of_task_id.pop(t.tag)
# A tasks completes 'succesfully' if it has result file,
# and it can be loaded. This may mean that the 'success' is
# an exception.
logger.debug("Looking for result in {}".format(result_file))
try:
with open(result_file, "rb") as f_in:
result = pickle.load(f_in)
logger.debug("Found result in {}".format(result_file))
collector_queue.put_nowait(
WqTaskToParsl(id=parsl_id,
result_received=True,
result=result,
reason=None,
status=t.return_status))
# If a result file could not be generated, explain the
# failure according to work queue error codes. We generate
# an exception and wrap it with RemoteExceptionWrapper, to
# match the positive case.
except Exception as e:
reason = _explain_work_queue_result(t)
logger.debug(
"Did not find result in {}".format(result_file))
logger.debug(
"Wrapper Script status: {}\nWorkQueue Status: {}".
format(t.return_status, t.result))
logger.debug(
"Task with id parsl {} / wq {} failed because:\n{}".
format(parsl_id, t.id, reason))
collector_queue.put_nowait(
WqTaskToParsl(id=parsl_id,
result_received=False,
result=e,
reason=reason,
status=t.return_status))
logger.debug("Exiting WorkQueue Monitoring Process")
return 0
