async def publish():
pub = Pub("a")
i = 0
while True:
await asyncio.sleep(0.01)
pub._put(i)
i += 1
async def publish():
pub = Pub('a')
i = 0
while True:
await gen.sleep(0.01)
pub._put(i)
i += 1
async def publish():
pub = Pub('a')
i = 0
while True:
await gen.sleep(0.01)
pub.put(i)
i += 1
async def test_repr(c, s, a, b):
pub = Pub("my-topic")
sub = Sub("my-topic")
assert "my-topic" in str(pub)
assert "Pub" in str(pub)
assert "my-topic" in str(sub)
assert "Sub" in str(sub)
def pingpong(a, b, start=False, n=1000, msg=1):
sub = Sub(a)
pub = Pub(b)
while not pub.subscribers:
sleep(0.01)
if start:
pub.put(msg) # other sub may not have started yet
for i in range(n):
msg = next(sub)
pub.put(msg)
# if i % 100 == 0:
# print(a, b, i)
return n
def test_client(c, s):
with pytest.raises(Exception):
get_worker()
sub = Sub('a')
pub = Pub('a')
sps = s.extensions['pubsub']
cps = c.extensions['pubsub']
start = time()
while not set(sps.client_subscribers['a']) == {c.id}:
yield gen.sleep(0.01)
assert time() < start + 3
pub.put(123)
result = yield sub.__anext__()
assert result == 123
def test_client(c, s):
with pytest.raises(Exception):
get_worker()
sub = Sub("a")
pub = Pub("a")
sps = s.extensions["pubsub"]
cps = c.extensions["pubsub"]
start = time()
while not set(sps.client_subscribers["a"]) == {c.id}:
yield gen.sleep(0.01)
assert time() < start + 3
pub.put(123)
result = yield sub.__anext__()
assert result == 123
def _sampler_worker(i, sampler_class):
try:
with threadpool_limits(1):
_sample_trace = nested_helper(sample_trace, i)
def logp_and_grad(x):
return density.logp_and_grad(x, original_space=False)
_sampler = sampler_class(logp_and_grad=logp_and_grad,
sample_trace=_sample_trace,
dask_key=dask_key,
process_lock=process_lock)
t = _sampler.run(n_run, verbose)
t._samples_original = density.to_original(t.samples)
t._logp_original = density.to_original_density(
t.logp, x_trans=t.samples)
return t
except Exception:
if use_dask:
pub = Pub(dask_key)
pub.put(['Error', i])
raise
def pingpong(a, b, start=False, n=1000, msg=1):
sub = Sub(a)
pub = Pub(b)
while not pub.subscribers:
sleep(0.01)
if start:
pub.put(msg) # other sub may not have started yet
for i in range(n):
msg = next(sub)
pub.put(msg)
# if i % 100 == 0:
# print(a, b, i)
return n
def f(x):
pub = Pub('a')
pub.put(x)
def __init__(self,
key,
*args,
tf_config=None,
tf_option=None,
scheduler_info=None,
**kwargs):
# here we made this thread an OWNER of this task by secede from it's ThreadPoolExecutor.
# NOTE: `thread_pool_secede` ONLY works in NON-coroutine actor_exectutor, ref:worker.actor_execute()
self.dask_worker = get_worker()
self.thrid = threading.get_ident()
thread_pool_secede(adjust=True)
self.dask_worker.loop.add_callback(self.dask_worker.transition,
thread_state.key, "long-running")
self.key = key
self.name = self.dask_worker.name
self.hostname = socket.gethostname()
self.address = self.dask_worker.address
self.scheduler_info = scheduler_info
model_name = self.key.partition(':')[0]
self.model_name = model_name[:-4] if model_name.endswith(
'.zip') else model_name
self.tf_option = json.loads(tf_option) if isinstance(
tf_option, str) else tf_option
self.tf_config = json.loads(tf_config) if isinstance(
tf_config, str) else tf_config
self.dask_cwd = os.path.abspath(os.getcwd())
self.tf_model_pool_dir = os.path.abspath(DASK_MODEL_POOL_DIR)
self.tf_data_pool_dir = os.path.abspath(DASK_DATA_POOL_DIR)
self.tf_data_dir = os.path.join(self.tf_data_pool_dir, self.model_name)
self.tf_config_dir = os.path.join(self.tf_data_dir, 'config')
self.tf_save_dir = os.path.join(self.tf_data_dir, 'ckpt')
self.tf_log_dir = os.path.join(self.tf_data_dir, 'log')
os.system('mkdir -p %r; rm -rf %r; mkdir -p %r %r %r %r' %
(self.tf_save_dir, self.tf_save_dir, self.tf_data_dir,
self.tf_config_dir, self.tf_save_dir, self.tf_log_dir))
os.chdir(self.tf_data_dir)
self.sys_stdio = (sys.__stdin__, sys.__stdout__, sys.__stderr__,
sys.stdin, sys.stdout, sys.stderr)
self.stdout = open(os.path.join(self.tf_log_dir, '%s.log' %
self.key.partition(':')[-1]),
'a+',
encoding=sys.stdout.encoding)
sys.__stdout__ = sys.__stderr__ = sys.stdout = sys.stderr = self.stdout
self.stdin = sys.stdin
self.sys_path, self.sys_argv = sys.path[:], sys.argv[:]
logger.info(
'Accepted Tensorflow Key:%s, Job:%s, Options:%s, Scheduler:%s',
key, tf_config, tf_option, scheduler_info)
self.devices = dict(tensorflow_devices())
self.future_chunk_size = DASK_READ_CHUNK_SIZE
self.args = args
self.kwargs = kwargs
self.sub = Sub(self.key, worker=self.dask_worker)
self.result = Pub(model_name, worker=self.dask_worker)
self.exe = self.preflight()
self.dask_worker.loop.add_callback(self.flight, self.exe)
class TFActor(object):
def __del__(self):
self.recovery()
def __str__(self):
return "<%s %s>" % (self.__class__.__name__, self.key)
def __init__(self,
key,
*args,
tf_config=None,
tf_option=None,
scheduler_info=None,
**kwargs):
# here we made this thread an OWNER of this task by secede from it's ThreadPoolExecutor.
# NOTE: `thread_pool_secede` ONLY works in NON-coroutine actor_exectutor, ref:worker.actor_execute()
self.dask_worker = get_worker()
self.thrid = threading.get_ident()
thread_pool_secede(adjust=True)
self.dask_worker.loop.add_callback(self.dask_worker.transition,
thread_state.key, "long-running")
self.key = key
self.name = self.dask_worker.name
self.hostname = socket.gethostname()
self.address = self.dask_worker.address
self.scheduler_info = scheduler_info
model_name = self.key.partition(':')[0]
self.model_name = model_name[:-4] if model_name.endswith(
'.zip') else model_name
self.tf_option = json.loads(tf_option) if isinstance(
tf_option, str) else tf_option
self.tf_config = json.loads(tf_config) if isinstance(
tf_config, str) else tf_config
self.dask_cwd = os.path.abspath(os.getcwd())
self.tf_model_pool_dir = os.path.abspath(DASK_MODEL_POOL_DIR)
self.tf_data_pool_dir = os.path.abspath(DASK_DATA_POOL_DIR)
self.tf_data_dir = os.path.join(self.tf_data_pool_dir, self.model_name)
self.tf_config_dir = os.path.join(self.tf_data_dir, 'config')
self.tf_save_dir = os.path.join(self.tf_data_dir, 'ckpt')
self.tf_log_dir = os.path.join(self.tf_data_dir, 'log')
os.system('mkdir -p %r; rm -rf %r; mkdir -p %r %r %r %r' %
(self.tf_save_dir, self.tf_save_dir, self.tf_data_dir,
self.tf_config_dir, self.tf_save_dir, self.tf_log_dir))
os.chdir(self.tf_data_dir)
self.sys_stdio = (sys.__stdin__, sys.__stdout__, sys.__stderr__,
sys.stdin, sys.stdout, sys.stderr)
self.stdout = open(os.path.join(self.tf_log_dir, '%s.log' %
self.key.partition(':')[-1]),
'a+',
encoding=sys.stdout.encoding)
sys.__stdout__ = sys.__stderr__ = sys.stdout = sys.stderr = self.stdout
self.stdin = sys.stdin
self.sys_path, self.sys_argv = sys.path[:], sys.argv[:]
logger.info(
'Accepted Tensorflow Key:%s, Job:%s, Options:%s, Scheduler:%s',
key, tf_config, tf_option, scheduler_info)
self.devices = dict(tensorflow_devices())
self.future_chunk_size = DASK_READ_CHUNK_SIZE
self.args = args
self.kwargs = kwargs
self.sub = Sub(self.key, worker=self.dask_worker)
self.result = Pub(model_name, worker=self.dask_worker)
self.exe = self.preflight()
self.dask_worker.loop.add_callback(self.flight, self.exe)
def device_info(self, xla=None, gpu=True):
if xla is None:
return gpu_filter([
v for (x, v) in self.devices.items()
if v['name'].find('GPU') >= 0
],
gpu_flag=gpu)
elif xla is True:
return gpu_filter([
v for (x, v) in self.devices.items()
if v['name'].find('XLA') >= 0
],
gpu_flag=gpu)
else:
return gpu_filter([
v
for (x, v) in self.devices.items() if v['name'].find('XLA') < 0
],
gpu_flag=gpu)
def tensorflow_env(self,
tf_option,
tf_config,
dask_context,
cuda_indexes=None):
model_entrypoint = os.path.join(self.tf_model_pool_dir,
self.model_name)
zip_ep, pkg_ep = model_entrypoint + '.zip', os.path.join(
model_entrypoint, '__main__.py')
if os.path.exists(pkg_ep) and os.path.isfile(pkg_ep):
model_entrypoint = pkg_ep
elif os.path.exists(zip_ep) and os.path.isfile(zip_ep):
model_entrypoint = zip_ep
else:
raise Exception(USAGE_INFO)
env_dict = {}
for key in ('LANG', 'PATH', 'CUDA_HOME', 'LD_LIBRARY_PATH', 'USER',
'HOME', 'HOSTNAME', 'SHELL', 'TERM', 'SHLVL', 'MAIL',
'SSH_CONNECTION', 'SSH_TTY', 'SSH_CLIENT'):
val = os.getenv(key)
if val is not None:
env_dict[key] = val
env_dict.update(
XLA_FLAGS='--xla_hlo_profile',
TF_DASK_PID=str(os.getpid()),
RF_DASK_PGRP=str(os.getpgrp()),
TF_XLA_FLAGS=("--tf_xla_cpu_global_jit " +
os.environ.get("TF_XLA_FLAGS", "")),
TF_MODEL=self.model_name,
TF_CONTEXT=json.dumps(dask_context),
TF_CONFIG=json.dumps(tf_config),
TF_MODEL_POOL_DIR=self.tf_model_pool_dir,
TF_DATA_POOL_DIR=self.tf_data_pool_dir,
TF_MODEL_ENTRYPOINT=model_entrypoint,
TF_CONFIG_DIR=self.tf_config_dir,
TF_DATA_DIR=self.tf_data_dir,
TF_LOG_DIR=self.tf_log_dir,
TF_SAVE_DIR=self.tf_save_dir,
PYTHONPATH=':'.join(
[self.tf_model_pool_dir, self.tf_data_dir, self.dask_cwd]),
PYTHONHASHSEED=str(int(DASK_PYTHONHASHSEED)),
PYTHONIOENCODING=sys.getdefaultencoding(),
PYTHONUNBUFFERED='True',
)
if cuda_indexes: # we explicitly assign GPU indexes to use; let tensorflow aware of ONLY these indexes
env_dict['CUDA_VISIBLE_DEVICES'] = cuda_indexes
return env_dict
def log(self, msg, *args, flush=True):
self.stdout.write((msg % args) if args else msg)
if flush:
self.stdout.flush()
def run_model(self, stdin, stdout, *args, **kwargs):
import sys
sys.stdin = stdin
self.stdout = sys.stdout = sys.stderr = sys.__stdout__ = sys.__stderr__ = stdout
self.log('HERE IN ASYNC SUBPROCESS: %s' % os.getpid())
model_name = os.getenv('TF_MODEL')
model_entry = os.getenv('TF_MODEL_ENTRYPOINT')
if model_entry.endswith('.zip'):
model_root, modname = model_entry, '__main__'
elif model_entry.endswith('.py'):
model_root, modname = os.path.dirname(
model_entry), os.path.basename(model_entry).rsplit('.', 1)[0]
self.log('HERE IN ASYNC MODEL START, %s, %s' % (modname, model_root))
sys.path.insert(0, model_root)
__import__(modname)
def preflight(self):
# this NODE is selected for this task
node_name, node_port, cuda_indexes, dask_url = self.tf_config.pop(
'dask').split(':', 3)
job_name, task_index = self.tf_config['task']['type'], self.tf_config[
'task']['index']
tensorflow_addr = self.tf_config['cluster'][job_name][task_index]
using_xla_gpu_devices = self.device_info(xla=True, gpu=True)
using_xla_gpu_device_names = sorted(
[x['name'] for x in using_xla_gpu_devices])
if isinstance(self.tf_option, (str, bytes)):
import tensorflow as tf
tf_option = tf.compat.v1.ConfigProto.FromString(self.tf_option)
elif self.tf_option is not None:
tf_option = self.tf_option
else:
tf_option = tensorflow_options()
dask_context = {
'model_task':
'%s, %s' % (self.key, ','.join(using_xla_gpu_device_names)),
'model_addr':
tensorflow_addr,
'worker_addr':
self.address,
'schduler_addr':
self.scheduler_info,
'workspace':
DASK_WORKSPACE,
'local_dir':
self.dask_cwd,
'pid':
os.getpid(),
'thread_id':
self.thrid,
'code':
0,
}
env_dict = self.tensorflow_env(tf_option,
self.tf_config,
dask_context,
cuda_indexes=cuda_indexes)
cmd = [
sys.executable, r'-u', env_dict['TF_MODEL_ENTRYPOINT'], self.key
]
fmt = 'Model Start, key:%s,\n cmd:%s\n dask_context:%s\n sys.path:%s\n tf_option:%s\n tf_config:%s\n\n'
self.log(fmt % (self.key, cmd, dask_context, self.sys_path, tf_option,
self.tf_config))
for k, v in env_dict.items():
if not isinstance(k, str) or not isinstance(v, str):
self.log('Error env k:%s, v:%s\n' % (k, v))
exe_package = partial(process.Subprocess,
cmd,
executable=DASK_PYTHON_INTERPRETER,
cwd=env_dict['TF_DATA_DIR'],
env=env_dict,
preexec_fn=None,
stdin=self.stdin,
stdout=self.stdout,
stderr=self.stdout,
encoding=sys.getdefaultencoding(),
pass_fds=(self.stdin.fileno(),
self.stdout.fileno()),
universal_newlines=False,
bufsize=0,
restore_signals=False,
start_new_session=False)
return exe_package
def flight(self, exe_package):
# flighting in main thread, since `SIGCHLD` MUST received in it; and then correctly call exit callback.
self.exe = exe_package()
self.exe.set_exit_callback(self.landed)
msg = '\n ***** Tensorflow Task Inited, key:%s, sub:%s, pid:%s ***** ' % (
self.key, self.exe.pid, os.getpid())
self.log(msg)
def landed(self, retval=0):
self.log("worker pub msg: %s", {self.key: retval})
self.result.put({self.key: retval})
ident = yield self.dask_worker.scheduler.identity()
msg = yield self.sub._get(timeout=10)
self.log('Tensorflow Push Message Received, sub:%s, msg:%s, ident:%s' %
(self.key, msg, ident))
msg = '\n ***** Tensorflow Task Finished, key:%s, ret:%s, tid:%s, pid:%s, ***** \n\n' % (
self.key, retval, threading.get_ident(), os.getpid())
self.log(msg)
self.recovery()
def recovery(self):
if self.sys_stdio is None:
return
self.log('State Recovery:%s', self.key)
os.chdir(self.dask_cwd)
sys.__stdin__, sys.__stdout__, sys.__stderr__, sys.stdin, sys.stdout, sys.stderr = self.sys_stdio
sys.path, sys.argv = self.sys_path, self.sys_argv
if self.stdin:
if self.stdin != sys.__stdin__:
self.stdin.close()
else:
self.stdin.flush()
if self.stdout:
if self.stdout != sys.__stdout__:
self.stdout.close()
else:
self.stdout.flush()
self.stdin = self.stdout = self.sys_stdio = self.sys_path = self.sys_argv = self.dask_worker = None
del self.result
del self.exe
del self.sub
def publish_event(dask_pub: distributed.Pub, event: BaseTaskEvent) -> None:
dask_pub.put(event.json())
def run(self, n_run=None, verbose=True, n_update=None):
if self._dask_key is None:
def sw(message, *args, **kwargs):
warnings._showwarning_orig(self._prefix + str(message), *args,
**kwargs)
else:
pub = Pub(self._dask_key)
def sw(message, category, *args, **kwargs):
pub.put([category, self._prefix + str(message)])
try:
warnings.showwarning = sw
i_iter = self._sample_trace.i_iter
n_iter = self._sample_trace.n_iter
n_warmup = self._sample_trace.n_warmup
if n_run is None:
n_run = n_iter - i_iter
else:
try:
n_run = int(n_run)
assert n_run > 0
except Exception:
raise ValueError(self._prefix + 'invalid value for n_run.')
if n_run > n_iter - i_iter:
self._sample_trace.n_iter = i_iter + n_run
n_iter = self._sample_trace.n_iter
if verbose:
if n_update is None:
n_update = n_run // 5
else:
try:
n_update = int(n_update)
assert n_update > 0
except Exception:
warnings.warn(
self._prefix + 'invalid value for n_update. Using '
'n_run//5 for now.', RuntimeWarning)
n_update = n_run // 5
t_s = time.time()
t_i = time.time()
for i in range(i_iter, i_iter + n_run):
if verbose:
if i > i_iter and not i % n_update:
t_d = time.time() - t_i
t_i = time.time()
n_div = np.sum(
self._sample_trace.stats._diverging[-n_update:])
msg_0 = (self._prefix +
'sampling proceeding [ {} / {} ], '
'last {} samples used {:.2f} seconds'.format(
i, n_iter, n_update, t_d))
if n_div / n_update > 0.05:
msg_1 = (', while divergence encountered in {} '
'sample(s).'.format(n_div))
else:
msg_1 = '.'
if self.warmup:
msg_2 = ' (warmup)'
else:
msg_2 = ''
if self._dask_key is None:
if self.has_lock:
self.process_lock.acquire()
print(msg_0 + msg_1 + msg_2)
if self.has_lock:
self.process_lock.release()
else:
pub.put(
['SamplingProceeding', msg_0 + msg_1 + msg_2])
self.warmup = bool(i < n_warmup)
self.astep()
if verbose:
t_f = time.time()
msg = (self._prefix + 'sampling finished [ {} / {} ], '
'obtained {} samples in {:.2f} seconds.'.format(
n_iter, n_iter, n_run, t_f - t_s))
if self._dask_key is None:
if self.has_lock:
self.process_lock.acquire()
print(msg)
if self.has_lock:
self.process_lock.release()
else:
pub.put(['SamplingFinished', msg])
return self._sample_trace
finally:
warnings.showwarning = warnings._showwarning_orig
def run(self,
n_iter=3000,
n_warmup=1000,
verbose=True,
n_update=None,
return_copy=True):
n_iter = int(n_iter)
n_warmup = int(n_warmup)
if self._dask_key is not None:
pub = Pub(self._dask_key)
def sw(message, category, *args, **kwargs):
pub.put([category, self._prefix + str(message)])
warnings.showwarning = sw
try:
if not n_iter >= 0:
raise ValueError(self._prefix + 'n_iter cannot be negative.')
if n_warmup > n_iter:
warnings.warn(
self._prefix + 'n_warmup is larger than n_iter. Setting '
'n_warmup = n_iter for now.', RuntimeWarning)
n_warmup = n_iter
if self._trace.n_iter > self._trace.n_warmup and n_warmup > 0:
warnings.warn(
self._prefix + 'self.trace indicates that warmup has '
'completed, so n_warmup will be set to 0.', RuntimeWarning)
n_warmup = 0
i_iter = self._trace.i_iter
self._trace._n_iter += n_iter
self._trace._n_warmup += n_warmup
n_iter = self._trace._n_iter
n_warmup = self._trace._n_warmup
if verbose:
n_run = n_iter - i_iter
if n_update is None:
n_update = n_run // 5
else:
n_update = int(n_update)
if n_update <= 0:
warnings.warn(
self._prefix + 'invalid n_update value. Using '
'n_run // 5 for now.', RuntimeWarning)
n_update = n_run // 5
t_s = time.time()
t_i = time.time()
for i in range(i_iter, n_iter):
if verbose:
if i > i_iter and not i % n_update:
t_d = time.time() - t_i
t_i = time.time()
n_div = np.sum(
self._trace._stats._diverging[-n_update:])
msg_0 = (self._prefix +
'sampling proceeding [ {} / {} ], '
'last {} samples used {:.2f} seconds'.format(
i, n_iter, n_update, t_d))
if n_div / n_update > 0.05:
msg_1 = (', while divergence encountered in {} '
'sample(s).'.format(n_div))
else:
msg_1 = '.'
if self.warmup:
msg_2 = ' (warmup)'
else:
msg_2 = ''
if self._dask_key is None:
print(msg_0 + msg_1 + msg_2)
else:
pub.put(
['SamplingProceeding', msg_0 + msg_1 + msg_2])
self.warmup = bool(i < n_warmup)
self.astep()
if verbose:
t_f = time.time()
msg = (self._prefix + 'sampling finished [ {} / {} ], '
'obtained {} samples in {:.2f} seconds.'.format(
n_iter, n_iter, n_run, t_f - t_s))
if self._dask_key is None:
print(msg)
else:
pub.put(['SamplingFinished', msg])
return self.trace if return_copy else self._trace
except:
if self._dask_key is not None:
pub.put(['Error', self._chain_id])
raise
finally:
warnings.showwarning = warnings._showwarning_orig
def f(x):
pub = Pub('a')
pub.put(x)
def f(x):
pub = Pub("a")
pub.put(x)
def tensorflow_scheduler(global_future,
model_name,
client=None,
tf_option=None,
tf_port=None,
**tf_cluster_spec):
scheduler_info = yield client.scheduler.identity()
cuda_free_map = yield client.run(cuda_free_indexes)
tf_configs = tensorflow_gen_config(free_node_name_map=cuda_free_map,
**tf_cluster_spec)
logger.info('Model Schedule %s: \n tf_configs:%s\n\n', model_name,
tf_configs)
tf_option = tf_option if isinstance(tf_option, (str, bytes)) else (
tf_option.SerializeToString() if tf_option else tf_option)
chief_configs, ps_configs, other_configs = [], [], []
for tf_config in tf_configs:
task_type = tf_config['task']['type']
task_index = tf_config['task']['index']
if task_type in ('chief', 'master'):
chief_configs.append(tf_config)
elif task_type in ('ps', ):
ps_configs.append(tf_config)
else:
other_configs.append(tf_config)
s_time = time.time()
dt = datetime.datetime.now()
chief_configs.sort(key=lambda cfg: cfg['task']['index'])
ps_configs.sort(key=lambda cfg: cfg['task']['index'])
other_configs.sort(key=lambda cfg: cfg['task']['index'])
client.loop.set_default_executor(
ThreadPoolExecutor(max_workers=len(tf_configs)))
result_future = Future()
result_future.tf_configs = tf_configs
result_future.tf_option = tf_option
result_future.cuda_map = cuda_free_map
chief_future = Future()
client.loop.add_callback(startup_actors, scheduler_info, client,
model_name, tf_option, tf_configs, chief_future)
chief_actors = yield chief_future
sorted_task_keys = list(
sorted(chief_actors.keys(), key=lambda x: dask_sork_key(x)))
sub = Sub(model_name, client=client)
pubs = {k: Pub(model_name, client=client) for k in sorted_task_keys}
scheduler_info = yield client.scheduler.identity(
) # data flush sync between this client and scheduler
def chief_finish(task_key, actor, fu):
value = fu.result()
logger.info('Tensorflow Finished[%s/%s], key:%s, val:%s',
len(chief_actors), len(tf_configs), task_key, value)
chief_actors[task_key] = actor
if len(chief_actors) == len(tf_configs):
logger.info('Tensorflow Cluster All Finished: %s',
chief_actors.keys())
# Chief First.
msgs = {}
chief_key_actor = sorted_task_keys[0]
while (len(msgs) + 1) < len(chief_actors):
msg = yield sub._get()
logger.info('Sub Rcv %s:%s', type(msg), msg)
msgs.update(msg)
import pdb
pdb.set_trace()
# A = yield chief_actor.get_result()
assert chief_key_actor in msgs, 'Tensorflow Chief Task Required: %s' % chief_key_actor
time.sleep(1)
future = yield model_cleanup(client, model_name)
import pdb
pdb.set_trace()
logger.info("Tensorflow Task clean, %s", chief_actors)
global_future.set_result(chief_actors)