def testSyncDetection(self):
kubernetes_conf = {"provider": {"type": "kubernetes", "namespace": "test_ray"}}
docker_conf = {"docker": {"image": "bogus"}, "provider": {"type": "aws"}}
aws_conf = {"provider": {"type": "aws"}}
with tempfile.TemporaryDirectory() as dir:
kubernetes_file = os.path.join(dir, "kubernetes.yaml")
with open(kubernetes_file, "wt") as fp:
yaml.safe_dump(kubernetes_conf, fp)
docker_file = os.path.join(dir, "docker.yaml")
with open(docker_file, "wt") as fp:
yaml.safe_dump(docker_conf, fp)
aws_file = os.path.join(dir, "aws.yaml")
with open(aws_file, "wt") as fp:
yaml.safe_dump(aws_conf, fp)
kubernetes_syncer = detect_cluster_syncer(None, kubernetes_file)
self.assertTrue(issubclass(kubernetes_syncer, KubernetesSyncer))
self.assertEqual(kubernetes_syncer._namespace, "test_ray")
docker_syncer = detect_cluster_syncer(None, docker_file)
self.assertTrue(issubclass(docker_syncer, DockerSyncer))
aws_syncer = detect_cluster_syncer(None, aws_file)
self.assertEqual(aws_syncer, None)
# Should still return DockerSyncer, since it was passed explicitly
syncer = detect_cluster_syncer(
tune.SyncConfig(syncer=DockerSyncer), kubernetes_file
)
self.assertTrue(issubclass(syncer, DockerSyncer))
def create_default_callbacks(
callbacks: Optional[List[Callback]],
sync_config: SyncConfig,
loggers: Optional[List[Logger]],
metric: Optional[str] = None,
):
"""Create default callbacks for `tune.run()`.
This function takes a list of existing callbacks and adds default
callbacks to it.
Specifically, three kinds of callbacks will be added:
1. Loggers. Ray Tune's experiment analysis relies on CSV and JSON logging.
2. Syncer. Ray Tune synchronizes logs and checkpoint between workers and
the head node.
2. Trial progress reporter. For reporting intermediate progress, like trial
results, Ray Tune uses a callback.
These callbacks will only be added if they don't already exist, i.e. if
they haven't been passed (and configured) by the user. A notable case
is when a Logger is passed, which is not a CSV or JSON logger - then
a CSV and JSON logger will still be created.
Lastly, this function will ensure that the Syncer callback comes after all
Logger callbacks, to ensure that the most up-to-date logs and checkpoints
are synced across nodes.
"""
callbacks = callbacks or []
has_syncer_callback = False
has_csv_logger = False
has_json_logger = False
has_tbx_logger = False
has_trial_progress_callback = any(
isinstance(c, TrialProgressCallback) for c in callbacks)
if not has_trial_progress_callback:
trial_progress_callback = TrialProgressCallback(metric=metric)
callbacks.append(trial_progress_callback)
# Track syncer obj/index to move callback after loggers
last_logger_index = None
syncer_index = None
# Deprecate: 1.9
# Create LegacyLoggerCallback for passed Logger classes
if loggers:
add_loggers = []
for trial_logger in loggers:
if isinstance(trial_logger, LoggerCallback):
callbacks.append(trial_logger)
elif isinstance(trial_logger, type) and issubclass(
trial_logger, Logger):
add_loggers.append(trial_logger)
else:
raise ValueError(
f"Invalid value passed to `loggers` argument of "
f"`tune.run()`: {trial_logger}")
if add_loggers:
callbacks.append(LegacyLoggerCallback(add_loggers))
# Check if we have a CSV, JSON and TensorboardX logger
for i, callback in enumerate(callbacks):
if isinstance(callback, LegacyLoggerCallback):
last_logger_index = i
if CSVLogger in callback.logger_classes:
has_csv_logger = True
if JsonLogger in callback.logger_classes:
has_json_logger = True
if TBXLogger in callback.logger_classes:
has_tbx_logger = True
elif isinstance(callback, CSVLoggerCallback):
has_csv_logger = True
last_logger_index = i
elif isinstance(callback, JsonLoggerCallback):
has_json_logger = True
last_logger_index = i
elif isinstance(callback, TBXLoggerCallback):
has_tbx_logger = True
last_logger_index = i
elif isinstance(callback, SyncerCallback):
syncer_index = i
has_syncer_callback = True
# If CSV, JSON or TensorboardX loggers are missing, add
if os.environ.get("TUNE_DISABLE_AUTO_CALLBACK_LOGGERS", "0") != "1":
if not has_csv_logger:
callbacks.append(CSVLoggerCallback())
last_logger_index = len(callbacks) - 1
if not has_json_logger:
callbacks.append(JsonLoggerCallback())
last_logger_index = len(callbacks) - 1
if not has_tbx_logger:
try:
callbacks.append(TBXLoggerCallback())
last_logger_index = len(callbacks) - 1
except ImportError:
logger.warning(
"The TensorboardX logger cannot be instantiated because "
"either TensorboardX or one of it's dependencies is not "
"installed. Please make sure you have the latest version "
"of TensorboardX installed: `pip install -U tensorboardx`")
# If no SyncerCallback was found, add
if (not has_syncer_callback and
os.environ.get("TUNE_DISABLE_AUTO_CALLBACK_SYNCER", "0") != "1"):
# Detect Docker and Kubernetes environments
_cluster_syncer = detect_cluster_syncer(sync_config)
syncer_callback = SyncerCallback(sync_function=_cluster_syncer)
callbacks.append(syncer_callback)
syncer_index = len(callbacks) - 1
if (syncer_index is not None and last_logger_index is not None
and syncer_index < last_logger_index):
if (not has_csv_logger or not has_json_logger
or not has_tbx_logger) and not loggers:
# Only raise the warning if the loggers were passed by the user.
# (I.e. don't warn if this was automatic behavior and they only
# passed a customer SyncerCallback).
raise ValueError(
"The `SyncerCallback` you passed to `tune.run()` came before "
"at least one `LoggerCallback`. Syncing should be done "
"after writing logs. Please re-order the callbacks so that "
"the `SyncerCallback` comes after any `LoggerCallback`.")
else:
# If these loggers were automatically created. just re-order
# the callbacks
syncer_obj = callbacks[syncer_index]
callbacks.pop(syncer_index)
callbacks.insert(last_logger_index, syncer_obj)
return callbacks
