49 lines
1.9 KiB
Python
49 lines
1.9 KiB
Python
# Copyright 2017 The TensorFlow Authors. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#==============================================================================
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"""Contains utility functions used by summary ops in distribution strategy."""
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from __future__ import absolute_import
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from __future__ import division
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from __future__ import print_function
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from tensorflow.python.distribute import distribution_strategy_context
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from tensorflow.python.framework import ops
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from tensorflow.python.framework import tensor_util
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def skip_summary():
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"""Determines if summary should be skipped.
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If using multiple replicas in distributed strategy, skip summaries on all
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replicas except the first one (replica_id=0).
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Returns:
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True if the summary is skipped; False otherwise.
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"""
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# TODO(priyag): Add a new optional argument that will provide multiple
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# alternatives to override default behavior. (e.g. run on last replica,
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# compute sum or mean across replicas).
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replica_context = distribution_strategy_context.get_replica_context()
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if not replica_context:
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return False
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# TODO(b/118385803): when replica_id of _TPUReplicaContext is properly
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# initialized, remember to change here as well.
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replica_id = replica_context.replica_id_in_sync_group
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if isinstance(replica_id, ops.Tensor):
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replica_id = tensor_util.constant_value(replica_id)
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return replica_id and replica_id > 0
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