ray.tune.syncer.SyncerCallback

class ray.tune.syncer.SyncerCallback(enabled: bool = True, sync_period: float = 300)

Bases: ray.tune.callback.Callback

Callback to synchronize trial directories on a worker node with the driver.

DeveloperAPI: This API may change across minor Ray releases.

Methods

get_state()	Get the state of the callback.
on_experiment_end(trials, **info)	Wait for background sync processes to finish on experiment end.
on_step_begin(iteration, trials, **info)	Called at the start of each tuning loop step.
on_step_end(iteration, trials, **info)	Called at the end of each tuning loop step.
on_trial_recover(iteration, trials, trial, ...)	Called after a trial instance failed (errored) but the trial is scheduled for retry.
on_trial_restore(iteration, trials, trial, ...)	Called after restoring a trial instance.
on_trial_save(iteration, trials, trial, **info)	Called after receiving a checkpoint from a trial.
set_state(state)	Set the state of the callback.
setup([stop, num_samples, total_num_samples])	Called once at the very beginning of training.