from typing import Any, Callable, Dict, List, Optional, Set
import cloudpickle # type: ignore
+from overrides import overrides
from ansi import bg, fg, underline, reset
import argparse_utils
import config
from exec_utils import run_silently, cmd_in_background
from decorator_utils import singleton
-import histogram
+import histogram as hist
logger = logging.getLogger(__name__)
RSYNC = 'rsync -q --no-motd -W --ignore-existing --timeout=60 --size-only -z'
SSH = 'ssh -oForwardX11=no'
-HIST = histogram.SimpleHistogram(
- histogram.SimpleHistogram.n_evenly_spaced_buckets(
- int(0), int(500), 25
- )
-)
-
-
-def run_local_bundle(fun, *args, **kwargs):
- logger.debug(f"Running local bundle at {fun.__name__}")
- start = time.time()
- result = fun(*args, **kwargs)
- end = time.time()
- duration = end - start
- logger.debug(f"{fun.__name__} finished; used {duration:.1f}s")
- HIST.add_item(duration)
- return result
-
-
-def run_cloud_pickle(pickle):
- fun, args, kwargs = cloudpickle.loads(pickle)
- logger.debug(f"Running pickled bundle at {fun.__name__}")
- start = time.time()
- result = fun(*args, **kwargs)
- end = time.time()
- duration = end - start
- logger.debug(f"{fun.__name__} finished; used {duration:.1f}s")
- return result
def make_cloud_pickle(fun, *args, **kwargs):
- logger.info(f"Making cloudpickled bundle at {fun.__name__}")
+ logger.debug(f"Making cloudpickled bundle at {fun.__name__}")
return cloudpickle.dumps((fun, args, kwargs))
class BaseExecutor(ABC):
- def __init__(self):
- pass
+ def __init__(self, *, title=''):
+ self.title = title
+ self.task_count = 0
+ self.histogram = hist.SimpleHistogram(
+ hist.SimpleHistogram.n_evenly_spaced_buckets(
+ int(0), int(500), 50
+ )
+ )
@abstractmethod
def submit(self,
wait: bool = True) -> None:
pass
+ def adjust_task_count(self, delta: int) -> None:
+ self.task_count += delta
+ logger.debug(f'Executor current task count is {self.task_count}')
+
class ThreadExecutor(BaseExecutor):
def __init__(self,
max_workers=workers,
thread_name_prefix="thread_executor_helper"
)
- self.job_count = 0
+ def run_local_bundle(self, fun, *args, **kwargs):
+ logger.debug(f"Running local bundle at {fun.__name__}")
+ start = time.time()
+ result = fun(*args, **kwargs)
+ end = time.time()
+ self.adjust_task_count(-1)
+ duration = end - start
+ logger.debug(f"{fun.__name__} finished; used {duration:.1f}s")
+ self.histogram.add_item(duration)
+ return result
+
+ @overrides
def submit(self,
function: Callable,
*args,
**kwargs) -> fut.Future:
- self.job_count += 1
- logger.debug(
- f'Submitted work to threadpool; there are now {self.job_count} items.'
- )
+ self.adjust_task_count(+1)
newargs = []
newargs.append(function)
for arg in args:
newargs.append(arg)
return self._thread_pool_executor.submit(
- run_local_bundle,
+ self.run_local_bundle,
*newargs,
**kwargs)
+ @overrides
def shutdown(self,
wait = True) -> None:
- logger.debug("Shutting down threadpool executor.")
- print(HIST)
+ logger.debug(f'Shutting down threadpool executor {self.title}')
+ print(self.histogram)
self._thread_pool_executor.shutdown(wait)
self._process_executor = fut.ProcessPoolExecutor(
max_workers=workers,
)
- self.job_count = 0
+ def run_cloud_pickle(self, pickle):
+ fun, args, kwargs = cloudpickle.loads(pickle)
+ logger.debug(f"Running pickled bundle at {fun.__name__}")
+ result = fun(*args, **kwargs)
+ self.adjust_task_count(-1)
+ return result
+
+ @overrides
def submit(self,
function: Callable,
*args,
**kwargs) -> fut.Future:
- # Bundle it up before submitting because pickle sucks.
+ start = time.time()
+ self.adjust_task_count(+1)
pickle = make_cloud_pickle(function, *args, **kwargs)
- self.job_count += 1
- logger.debug(
- f'Submitting work to processpool executor; there are now {self.job_count} items.'
+ result = self._process_executor.submit(
+ self.run_cloud_pickle,
+ pickle
)
- return self._process_executor.submit(run_cloud_pickle, pickle)
+ result.add_done_callback(
+ lambda _: self.histogram.add_item(
+ time.time() - start
+ )
+ )
+ return result
+ @overrides
def shutdown(self, wait=True) -> None:
- logger.debug('Shutting down processpool executor')
- print(HIST)
+ logger.debug(f'Shutting down processpool executor {self.title}')
self._process_executor.shutdown(wait)
+ print(self.histogram)
+
+ def __getstate__(self):
+ state = self.__dict__.copy()
+ state['_process_executor'] = None
+ return state
@dataclass
class BundleDetails:
pickled_code: bytes
uuid: str
+ fname: str
worker: Optional[RemoteWorkerRecord]
username: Optional[str]
machine: Optional[str]
policy: RemoteWorkerSelectionPolicy) -> None:
super().__init__()
self.workers = workers
+ self.policy = policy
self.worker_count = 0
for worker in self.workers:
self.worker_count += worker.count
msg = f"We need somewhere to schedule work; count was {self.worker_count}"
logger.critical(msg)
raise Exception(msg)
- self.policy = policy
self.policy.register_worker_pool(self.workers)
self.cv = threading.Condition()
self._helper_executor = fut.ThreadPoolExecutor(
self.status = RemoteExecutorStatus(self.worker_count)
self.total_bundles_submitted = 0
logger.debug(
- f'Creating remote processpool with {self.worker_count} remote endpoints.'
+ f'Creating remote processpool with {self.worker_count} remote worker threads.'
)
def is_worker_available(self) -> bool:
def launch(self, bundle: BundleDetails) -> Any:
"""Find a worker for bundle or block until one is available."""
+ self.adjust_task_count(+1)
uuid = bundle.uuid
hostname = bundle.hostname
avoid_machine = None
bundle.worker = worker
machine = bundle.machine = worker.machine
username = bundle.username = worker.username
+ fname = bundle.fname
self.status.record_acquire_worker(worker, uuid)
logger.debug(f'Running bundle {uuid} on {worker}...')
return self.post_launch_work(bundle)
except Exception as e:
logger.exception(e)
- logger.info(f"Bundle {uuid} seems to have failed?!")
+ logger.info(f"{uuid}/{fname}: bundle seems to have failed?!")
if bundle.failure_count < config.config['executors_max_bundle_failures']:
return self.launch(bundle)
else:
- logger.info(f"Bundle {uuid} is poison, giving up on it.")
+ logger.info(f"{uuid}/{fname}: bundle is poison, giving up on it.")
return None
# Send input to machine if it's not local.
if hostname not in machine:
cmd = f'{RSYNC} {bundle.code_file} {username}@{machine}:{bundle.code_file}'
- logger.info(f"Copying work to {worker} via {cmd}")
+ logger.info(f"{uuid}/{fname}: Copying work to {worker} via {cmd}")
run_silently(cmd)
# Do it.
cmd = (f'{SSH} {bundle.username}@{bundle.machine} '
- f'"source remote-execution/bin/activate &&'
+ f'"source py39-venv/bin/activate &&'
f' /home/scott/lib/python_modules/remote_worker.py'
f' --code_file {bundle.code_file} --result_file {bundle.result_file}"')
p = cmd_in_background(cmd, silent=True)
bundle.pid = pid = p.pid
- logger.info(f"Running {cmd} in the background as process {pid}")
+ logger.info(f"{uuid}/{fname}: Start training on {worker} via {cmd} (background pid {pid})")
while True:
try:
- p.wait(timeout=0.5)
+ p.wait(timeout=0.25)
except subprocess.TimeoutExpired:
self.heartbeat()
break
else:
logger.debug(
- f"{pid}/{bundle.uuid} has finished its work normally."
+ f"{uuid}/{fname}: pid {pid} has finished its work normally."
)
break
return self.post_launch_work(bundle)
except Exception as e:
logger.exception(e)
- logger.info(f"Bundle {uuid} seems to have failed?!")
+ logger.info(f"{uuid}: Bundle seems to have failed?!")
if bundle.failure_count < config.config['executors_max_bundle_failures']:
return self.launch(bundle)
- logger.info(f"Bundle {uuid} is poison, giving up on it.")
+ logger.info(f"{uuid}: Bundle is poison, giving up on it.")
return None
def post_launch_work(self, bundle: BundleDetails) -> Any:
machine = bundle.machine
result_file = bundle.result_file
code_file = bundle.code_file
+ fname = bundle.fname
+ uuid = bundle.uuid
# Whether original or backup, if we finished first we must
# fetch the results if the computation happened on a
# remote machine.
+ bundle.end_ts = time.time()
if not was_cancelled:
assert bundle.machine is not None
if bundle.hostname not in bundle.machine:
cmd = f'{RSYNC} {username}@{machine}:{result_file} {result_file} 2>/dev/null'
logger.info(
- f"Fetching results from {username}@{machine} via {cmd}"
+ f"{uuid}/{fname}: Fetching results from {username}@{machine} via {cmd}"
)
try:
run_silently(cmd)
except subprocess.CalledProcessError:
- pass
+ logger.critical(f'Failed to copy {username}@{machine}:{result_file}!')
run_silently(f'{SSH} {username}@{machine}'
f' "/bin/rm -f {code_file} {result_file}"')
- bundle.end_ts = time.time()
+ dur = bundle.end_ts - bundle.start_ts
+ self.histogram.add_item(dur)
assert bundle.worker is not None
self.status.record_release_worker_already_locked(
bundle.worker,
bundle.uuid,
was_cancelled
)
- if not was_cancelled:
- dur = bundle.end_ts - bundle.start_ts
- HIST.add_item(dur)
-
- # Original or not, the results should be back on the local
- # machine. Are they?
- if not os.path.exists(result_file):
- msg = f'{result_file} unexpectedly missing, wtf?!'
- logger.critical(msg)
- bundle.failure_count += 1
- self.release_worker(bundle.worker)
- raise Exception(msg)
# Only the original worker should unpickle the file contents
- # though since it's the only one whose result matters.
+ # though since it's the only one whose result matters. The
+ # original is also the only job that may delete result_file
+ # from disk. Note that the original may have been cancelled
+ # if one of the backups finished first; it still must read the
+ # result from disk.
if is_original:
- logger.debug(f"Unpickling {result_file}.")
+ logger.debug(f"{uuid}/{fname}: Unpickling {result_file}.")
try:
with open(f'{result_file}', 'rb') as rb:
serialized = rb.read()
if bundle.backup_bundles is not None:
for backup in bundle.backup_bundles:
logger.debug(
- f'Notifying backup {backup.uuid} that it is cancelled'
+ f'{uuid}/{fname}: Notifying backup {backup.uuid} that it\'s cancelled'
)
backup.is_cancelled.set()
- # This is a backup.
+ # This is a backup job.
else:
# Backup results don't matter, they just need to leave the
- # result file in the right place for their original to
- # read later.
+ # result file in the right place for their originals to
+ # read/unpickle later.
result = None
# Tell the original to stop if we finished first.
if not was_cancelled:
logger.debug(
- f'Notifying original {bundle.src_bundle.uuid} that it is cancelled'
+ f'{uuid}/{fname}: Notifying original {bundle.src_bundle.uuid} that it\'s cancelled'
)
bundle.src_bundle.is_cancelled.set()
assert bundle.worker is not None
self.release_worker(bundle.worker)
+ self.adjust_task_count(-1)
return result
- def create_original_bundle(self, pickle):
+ def create_original_bundle(self, pickle, fname: str):
from string_utils import generate_uuid
uuid = generate_uuid(as_hex=True)
code_file = f'/tmp/{uuid}.code.bin'
bundle = BundleDetails(
pickled_code = pickle,
uuid = uuid,
+ fname = fname,
worker = None,
username = None,
machine = None,
failure_count = 0,
)
self.status.record_bundle_details(bundle)
- logger.debug(f'Created original bundle {uuid}')
+ logger.debug(f'{uuid}/{fname}: Created original bundle')
return bundle
def create_backup_bundle(self, src_bundle: BundleDetails):
backup_bundle = BundleDetails(
pickled_code = src_bundle.pickled_code,
uuid = uuid,
+ fname = src_bundle.fname,
worker = None,
username = None,
machine = None,
)
src_bundle.backup_bundles.append(backup_bundle)
self.status.record_bundle_details_already_locked(backup_bundle)
- logger.debug(f'Created backup bundle {uuid}')
+ logger.debug(f'{uuid}/{src_bundle.fname}: Created backup bundle')
return backup_bundle
def schedule_backup_for_bundle(self,
assert self.status.lock.locked()
backup_bundle = self.create_backup_bundle(src_bundle)
logger.debug(
- f'Scheduling backup bundle {backup_bundle.uuid} for execution'
+ f'{backup_bundle.uuid}/{backup_bundle.fname}: Scheduling backup for execution...'
)
self._helper_executor.submit(self.launch, backup_bundle)
# they will move the result_file to this machine and let
# the original pick them up and unpickle them.
+ @overrides
def submit(self,
function: Callable,
*args,
**kwargs) -> fut.Future:
pickle = make_cloud_pickle(function, *args, **kwargs)
- bundle = self.create_original_bundle(pickle)
+ bundle = self.create_original_bundle(pickle, function.__name__)
self.total_bundles_submitted += 1
- logger.debug(
- f'Submitted work to remote executor; {self.total_bundles_submitted} items now submitted'
- )
return self._helper_executor.submit(self.launch, bundle)
+ @overrides
def shutdown(self, wait=True) -> None:
self._helper_executor.shutdown(wait)
- print(HIST)
+ logging.debug(f'Shutting down RemoteExecutor {self.title}')
+ print(self.histogram)
@singleton
RemoteWorkerRecord(
username = 'scott',
machine = 'meerkat.cabin',
- weight = 7,
+ weight = 5,
count = 2,
),
)
projects / python_utils.git / blobdiff