Function basic_train_loop

tensorflow/python/training/basic_loops.py:25–65

Basic loop to train a model. Calls `train_step_fn` in a loop to train a model. The function is called as: ```python train_step_fn(session, *args, **kwargs) ``` It is passed a `tf.compat.v1.Session` in addition to `args` and `kwargs`. The function typically runs one training step i

(supervisor,
                     train_step_fn,
                     args=None,
                     kwargs=None,
                     master="")

@tf_export(v1=["train.basic_train_loop"])
def basic_train_loop(supervisor,
                     train_step_fn,
                     args=None,
                     kwargs=None,
                     master=""):
  """Basic loop to train a model.

  Calls `train_step_fn` in a loop to train a model.  The function is called as:

  ```python
  train_step_fn(session, *args, **kwargs)
  ```

  It is passed a `tf.compat.v1.Session` in addition to `args` and `kwargs`.  The
  function
  typically runs one training step in the session.

  Args:
    supervisor: `tf.compat.v1.train.Supervisor` to run the training services.
    train_step_fn: Callable to execute one training step.  Called repeatedly as
      `train_step_fn(session, *args **kwargs)`.
    args: Optional positional arguments passed to `train_step_fn`.
    kwargs: Optional keyword arguments passed to `train_step_fn`.
    master: Master to use to create the training session.  Defaults to `""`
      which causes the session to be created in the local process.
  """
  if args is None:
    args = []
  if kwargs is None:
    kwargs = {}
  should_retry = True
  while should_retry:
    try:
      should_retry = False
      with supervisor.managed_session(master) as sess:
        while not supervisor.should_stop():
          train_step_fn(sess, *args, **kwargs)
    except errors.AbortedError:
      # Always re-run on AbortedError as it indicates a restart of one of the
      # distributed tensorflow servers.
      should_retry = True