1/* Copyright 2020 The TensorFlow Authors. All Rights Reserved.
2
3Licensed under the Apache License, Version 2.0 (the "License");
4you may not use this file except in compliance with the License.
5You may obtain a copy of the License at
6
7 http://www.apache.org/licenses/LICENSE-2.0
8
9Unless required by applicable law or agreed to in writing, software
10distributed under the License is distributed on an "AS IS" BASIS,
11WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12See the License for the specific language governing permissions and
13limitations under the License.
14==============================================================================*/
15#ifndef TENSORFLOW_CORE_NCCL_COLLECTIVE_COMMUNICATOR_H_
16#define TENSORFLOW_CORE_NCCL_COLLECTIVE_COMMUNICATOR_H_
17
18#include "tensorflow/core/framework/collective.h"
19
20namespace tensorflow {
21
22// Creates a NcclCommunicator if built with NCCL support (unless configured to
23// use no GPU devices), otherwise it returns nullptr.
24std::unique_ptr<NcclCommunicatorInterface> MaybeCreateNcclCommunicator(
25 const ConfigProto& config);
26
27} // namespace tensorflow
28
29#endif // TENSORFLOW_CORE_NCCL_COLLECTIVE_COMMUNICATOR_H_
30