ray.train.v2.api.data_parallel_trainer.DataParallelTrainer.fit

DataParallelTrainer.fit() → Result

Launches the Ray Train controller to run training on workers.

Returns:

A Result object containing the training result.

Raises:

• ray.train.v2.api.exceptions.ControllerError – If a non-retryable error occurs in the Ray Train controller itself, or if the number of retries configured in FailureConfig is exhausted.

• ray.train.v2.api.exceptions.WorkerGroupError – If one or more workers fail during training and the number of retries configured in FailureConfig is exhausted.