message: Clean up some text in cross_device_ops.
diff: @@ -916,15 +916,15 @@ def _choose_all_reduce_algorithm(device_links):
  def choose_the_best(devices, session_config=None):
  - """Find the best subclass of CrossDeviceOps given a tensorflow session.
  + """Find the best subclass of CrossDeviceOps given a session config.
  Args:
  - devices: a list of devices passed for distribute strategy.
  - session_config: a tensorflow session config or None. If None, it will make
  - deciesion based on all local devices.
  + devices: a list of devices passed to `tf.distribute.Strategy`.
  + session_config: a `tf.ConfigProto` or `None`. If `None`, it will make
  + decision based on all local devices.
  Returns:
  - a subclass of CrossDeviceOps.
  + A subclass of `CrossDeviceOps`.
  """
  requested_devices = set([device_util.canonicalize(d) for d in devices])
  machine_devices = device_lib.list_local_devices(session_config=session_config)
  @@ -937,13 +937,13 @@ def choose_the_best(devices, session_config=None):
  "Device is available but not used by distribute strategy: %s", d.name)
  if len(using_devices) != len(requested_devices):
  - logging.warning("Not all devices in distribute strategy are visible by "
  - "TensorFlow sessions.")
  + logging.warning("Not all devices in `tf.distribute.Strategy` are visible "
  + "to TensorFlow.")
  return ReductionToOneDeviceCrossDeviceOps()
  if any(d.device_type.lower() != "gpu" for d in using_devices):
  - logging.warning("Not all devices in DistributionStrategy are visible to "
  - "TensorFlow session.")
  + logging.warning("Not all devices in `tf.distribute.Strategy` are visible "
  + "to TensorFlow.")
  return ReductionToOneDeviceCrossDeviceOps()
  device_links = [[] for _ in range(len(using_devices))]
  