forked from huawei/mindspore2022
76 lines
2.4 KiB
C++
76 lines
2.4 KiB
C++
/**
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* Copyright 2019 Huawei Technologies Co., Ltd
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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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#ifndef MINDSPORE_CCSRC_PARALLEL_GROUP_MANAGER_H_
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#define MINDSPORE_CCSRC_PARALLEL_GROUP_MANAGER_H_
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#include <cstdint>
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#include <map>
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#include <string>
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#include <vector>
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#include "parallel/device.h"
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#include "parallel/status.h"
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namespace mindspore {
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namespace parallel {
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constexpr char HCCL_WORLD_GROUP[] = "hccl_world_group";
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constexpr char NCCL_WORLD_GROUP[] = "nccl_world_group";
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constexpr char UNDEFINED_WORLD_GROUP[] = "undefined_world_group";
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// Devices that need communication should in the same group. These classes are used to
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// create and destroy group among devices.
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class Group {
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public:
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Group();
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~Group() = default;
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Status Init(const std::string& name, const std::vector<Device>& devices);
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std::vector<Device> GetDevicesList() const;
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std::string name() const { return name_; }
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bool IsInThisGroup(int32_t device_rank);
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Status GetIndex(size_t* index);
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size_t GetDevNum() const { return devices_.size(); }
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private:
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std::string name_;
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std::vector<Device> devices_;
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};
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class GroupManager {
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public:
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GroupManager();
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~GroupManager() = default;
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Status CreateGroup(const std::string& name, const std::vector<Device>& devices, Group* group);
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Status DestroyGroup(Group* group);
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Status DestroyAllGroups();
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Status GetRankID(const std::string& name, unsigned int* rank_id);
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Status GetRankSize(const std::string& name, unsigned int* rank_size);
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Status FindGroup(const std::string& name, Group** group);
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std::string world_group() const { return world_group_; }
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void set_world_group(const std::string& name) { world_group_ = name; }
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void Clear();
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private:
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// the key is group name (name_)
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std::map<std::string, Group> groups_;
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std::string world_group_;
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};
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} // namespace parallel
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} // namespace mindspore
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#endif // MINDSPORE_CCSRC_PARALLEL_GROUP_MANAGER_H_
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