ray.tune.logger.JsonLoggerCallback
ray.tune.logger.JsonLoggerCallback#
- class ray.tune.logger.JsonLoggerCallback[source]#
Bases:
ray.tune.logger.logger.LoggerCallback
Logs trial results in json format.
Also writes to a results file and param.json file when results or configurations are updated. Experiments must be executed with the JsonLoggerCallback to be compatible with the ExperimentAnalysis tool.
PublicAPI: This API is stable across Ray releases.
Methods
Get the state of the callback.
log_trial_restore
(trial)Handle logging when a trial restores.
log_trial_save
(trial)Handle logging when a trial saves a checkpoint.
on_checkpoint
(iteration, trials, trial, ...)Called after a trial saved a checkpoint with Tune.
on_experiment_end
(trials, **info)Called after experiment is over and all trials have concluded.
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.
set_state
(state)Set the state of the callback.
setup
([stop, num_samples, total_num_samples])Called once at the very beginning of training.