1 /** 2 * Copyright 2019 Huawei Technologies Co., Ltd 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef MINDSPORE_CCSRC_UTILS_COMM_MANAGER_H 18 #define MINDSPORE_CCSRC_UTILS_COMM_MANAGER_H 19 20 #include <string> 21 #include <vector> 22 #include <utility> 23 #include "utils/log_adapter.h" 24 25 using std::string; 26 using std::vector; 27 28 namespace mindspore { 29 constexpr unsigned int NO_COMM_DLIB_RANK_SIZE = 2048; 30 31 class CommManager { 32 public: 33 static CommManager &GetInstance() noexcept; 34 bool CreateGroupSync(const string &group, const vector<unsigned int> &rank_id_list) const; 35 bool DestroyGroup(const string &group) const; 36 bool GetRankID(const string &group, unsigned int *rank_id) const; 37 bool GetRankSize(const string &group, unsigned int *rank_size) const; 38 ~CommManager() = default; 39 40 CommManager(const CommManager &) = delete; 41 42 private: CommManager(string backend)43 explicit CommManager(string backend) : backend_(std::move(backend)) {} 44 string backend_; 45 }; 46 47 uint32_t GetRank(); 48 49 bool IsStandAlone(); 50 } // namespace mindspore 51 #endif // MINDSPORE_CCSRC_UTILS_COMMUNICATION_MANAGER_H 52