def test22(self):
pool = AsyncRequestsPool()
x = self.ForTestingInterface()
y = self.ForTestingInterface()
request1 = x.sleep.asynchronous(0.5)
request2 = y.sleep.asynchronous(1.5)
finished_requests = []
def handle_result(request, index):
self.assertTrue(request.is_result_available())
finished_requests.append(index)
pool.add_request(request1, handle_result, [1])
pool.add_request(request2, handle_result, [2])
pool.wait()
self.assertEquals(len(finished_requests), 1)
self.assertEquals(len(pool), 1)
pool.wait()
self.assertEquals(len(finished_requests), 2)
self.assertEquals(len(pool), 0)
self.assertTrue(request1.is_result_available())
self.assertTrue(request2.is_result_available())
self.assertEquals(request1.result(), 0)
self.assertEquals(request2.result(), 0)
y.stop()
x.stop()
def test29(self):
pool = AsyncRequestsPool()
x = self.ForTestingInterface()
y = self.ForTestingInterface()
sequenced_requests_indices = []
def next_request(index):
if index < 4:
sequenced_requests_indices.append(index)
return x.sleep.asynchronous(0.5)
else:
return None
request1 = ASyncRequestSequence(next_request)
request2 = y.sleep.asynchronous(1.0)
finished_requests = []
def handle_result(request, index):
self.assertTrue(request.is_result_available())
self.assertTrue(request.is_finished)
finished_requests.append(index)
pool.add_request(request1, handle_result, [1])
pool.add_request(request2, handle_result, [2])
pool.wait()
self.assertEquals(len(finished_requests), 1)
self.assertEquals(len(pool), 1)
self.assertEquals(finished_requests, [2])
self.assertTrue(len(sequenced_requests_indices) > 0)
pool.wait()
self.assertEquals(len(finished_requests), 2)
self.assertEquals(len(pool), 0)
x.sleep(0.1)
self.assertEquals(sequenced_requests_indices, [0, 1, 2, 3])
self.assertTrue(request1.is_result_available())
self.assertTrue(request2.is_result_available())
self.assertEquals(request1.result(), [0, 0, 0, 0])
self.assertEquals(request2.result(), 0)
y.stop()
x.stop()
def test23(self):
pool = AsyncRequestsPool()
x = ForTestingInterface(channel_type='sockets')
y = ForTestingInterface(channel_type='sockets')
request1 = x.sleep.asynchronous(0.2)
request2 = y.sleep.asynchronous(0.2)
finished_requests = []
def handle_result(request, index):
self.assertTrue(request.is_result_available())
finished_requests.append(index)
pool.add_request(request1, handle_result, [1])
pool.add_request(request2, handle_result, [2])
time.sleep(1.0)
pool.wait()
pool.wait()
self.assertEquals(len(finished_requests), 2)
self.assertEquals(len(pool), 0)
self.assertTrue(request1.is_result_available())
self.assertTrue(request2.is_result_available())
self.assertEquals(request1.result(), 0)
self.assertEquals(request2.result(), 0)
pool.wait()
self.assertEquals(len(pool), 0)
y.stop()
x.stop()
class JobServer(object):
def __init__(self,
hosts=[],
channel_type="mpi",
preamble=None,
retry_jobs=True,
no_wait=True,
verbose=True,
max_retries=2,
use_threading=False):
self.hosts = []
self.job_list = deque()
self.idle_codes = []
self.retry_jobs = retry_jobs
self.max_retries = max_retries
self._finished_jobs = deque()
self.preamble = preamble
self.pool = AsyncRequestsPool()
self.number_available_codes = 0
self.number_starting_codes = 0
self.no_wait = no_wait
self.last_finished_job = None
self.use_threading = use_threading
self.verbose = verbose
if self.verbose:
print("AMUSE JobServer launching")
self.add_hosts(hosts=hosts, channel_type=channel_type)
def no_hosts(self):
if self.number_available_codes == 0 and self.number_starting_codes == 0:
return True
return False
def add_hosts(self, hosts=[], channel_type="mpi"):
self.hosts.append(hosts)
if self.verbose:
print("JobServer: connecting %i hosts" % len(hosts))
if not self.use_threading:
for host in hosts:
self.number_starting_codes += 1
self._startup(channel_type=channel_type,
hostname=host,
label=host,
copy_worker_code=True,
redirection="none")
else:
threads = []
for host in hosts:
kwargs = dict(channel_type=channel_type,
hostname=host,
label=host,
copy_worker_code=True,
redirection="none")
threads.append(
threading.Thread(target=self._startup, kwargs=kwargs))
for thread in threads:
self.number_starting_codes += 1
thread.daemon = True
thread.start()
if not self.no_wait:
if self.verbose:
print("... waiting")
for thread in threads:
thread.join()
else:
if self.verbose:
print("... waiting for first available host")
while self.number_available_codes == 0 and self.number_starting_codes > 0:
sleep(0.1)
if self.no_wait:
if self.verbose:
print("JobServer: launched")
else:
if self.verbose:
print("JobServer: launched with", len(self.idle_codes),
"hosts")
def _startup(self, *args, **kwargs):
try:
code = RemoteCodeInterface(*args, **kwargs)
except Exception as ex:
self.number_starting_codes -= 1
print("JobServer: startup failed on", kwargs['hostname']
or "default")
print(ex)
else:
if self.preamble is not None:
code.execute(self.preamble)
self.number_available_codes += 1
self.number_starting_codes -= 1
if self.no_wait:
if self.number_available_codes & (self.number_available_codes -
1) == 0:
if self.verbose:
print("JobServer: hosts now available:",
self.number_available_codes)
if self.number_starting_codes == 0:
if self.verbose:
print("JobServer: hosts in total:",
self.number_available_codes)
if self.job_list:
self._add_job(self.job_list.popleft(), code)
else:
self.idle_codes.append(code)
def exec_(self, arg):
while self.number_starting_codes > 0:
sleep(0.1)
self.waitall()
for code in self.idle_codes:
code.execute(arg)
def submit_job(self, f, args=(), kwargs={}):
if len(self.pool) == 0 and not self.job_list:
if self.verbose:
print("JobServer: submitting first job on queue")
job = Job(f, args, kwargs)
self.job_list.append(job)
if self.idle_codes:
self._add_job(self.job_list.popleft(), self.idle_codes.pop())
return job
def wait(self):
if self._finished_jobs:
self.last_finished_job = self._finished_jobs.popleft()
return True
elif len(self.pool) == 0 and not self.job_list:
if self.verbose:
print("JobServer: no more jobs on queue or running")
return False
else:
while len(self.pool) == 0 and self.job_list:
if self.number_available_codes > 0:
raise Exception("JobServer: this should not happen")
if self.number_starting_codes == 0:
raise Exception("JobServer: no codes available")
self.pool.wait()
self.last_finished_job = self._finished_jobs.popleft()
return True
def waitall(self):
while len(self.pool) == 0 and self.job_list:
if self.number_available_codes > 0:
raise Exception("JobServer: this should not happen")
if self.number_starting_codes == 0:
raise Exception("JobServer: no codes available")
while len(self.pool) > 0 or self.job_list:
self.pool.wait()
self.last_finished_job = self._finished_jobs[-1]
@property
def finished_jobs(self):
while self._finished_jobs:
yield self._finished_jobs.popleft()
def _finalize_job(self, request, job, code):
try:
job.result = request.result()
job.err = None
except Exception as ex:
job.result = None
job.err = ex
if job.err and not isinstance(job.err, RemoteCodeException):
del code
self.number_available_codes -= 1
if self.retry_jobs and job.retries < self.max_retries:
retry = Job(job.f, job.args, job.kwargs, job.retries + 1)
self.job_list.append(retry)
else:
self.idle_codes.append(code)
if self.job_list and self.idle_codes:
self._add_job(self.job_list.popleft(), self.idle_codes.pop())
if not self.job_list:
if self.verbose:
print("JobServer: last job dispatched")
self._finished_jobs.append(job)
def _add_job(self, job, code):
job.request = code.async_func(job.f, *job.args, **job.kwargs)
self.pool.add_request(job.request, self._finalize_job, [job, code])
def __del__(self):
if not self.no_hosts():
self.waitall()
if self.job_list:
warnings.warn(
"JobServer: Warning: shutting down with unfinished jobs")
for code in self.idle_codes:
code.stop()
if self.number_starting_codes > 0:
warnings.warn(
"JobServer: Warning: some hosts startup threads possibly blocking"
)