forked from huawei/mindspore2022
131 lines
4.6 KiB
C++
131 lines
4.6 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_FRONTEND_PARALLEL_DEVICE_MANAGER_H_
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#define MINDSPORE_CCSRC_FRONTEND_PARALLEL_DEVICE_MANAGER_H_
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#include <cstdint>
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#include <cstring>
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#include <map>
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#include <memory>
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#include <string>
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#include <utility>
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#include <vector>
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#include "common/utils.h"
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#include "frontend/parallel/device.h"
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#include "frontend/parallel/device_matrix.h"
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#include "frontend/parallel/group_manager.h"
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#include "frontend/parallel/status.h"
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#include "frontend/parallel/strategy.h"
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#include "utils/convert_utils.h"
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namespace mindspore {
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namespace parallel {
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#define MAX_DEVICE_NUM 1024
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constexpr char HCCL_BACKEND[] = "hccl";
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constexpr char NCCL_BACKEND[] = "nccl";
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constexpr char UNDEFINED_BACKEND[] = "undefined_backend";
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class DeviceManager;
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using DeviceManagerPtr = std::shared_ptr<DeviceManager>;
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// 'g_device_manager' is the globally unique manager to manage the devices.
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extern DeviceManagerPtr g_device_manager;
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class Stage {
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// This class is used in pipeline-parallelization. Available devices are partitioned into multiple stages.
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// Currently, the function of pipeline-parallelization and this class are NOT implemented.
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public:
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explicit Stage(std::vector<Device> devices) : devices_(std::move(devices)), number_(0), rank_(0) {
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gm_ = GroupManager();
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}
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Stage(const std::vector<mindspore::parallel::Device> &devices, int num, int rank);
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~Stage() = default;
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int GetStageNum() const { return number_; }
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size_t GetDevicesNum() const { return devices_.size(); }
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std::vector<Device> GetDevicesList() { return devices_; }
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int global_rank(Group *g) const;
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private:
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std::vector<Device> devices_;
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int number_;
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int32_t rank_;
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GroupManager gm_;
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};
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// This method is used for initializing the global DeviceManager 'g_device_manager',
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// arguments including 'device_num' and 'global_rank'
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bool InitDevice(int32_t device_num, int32_t global_rank, const std::string &backend);
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void CheckGlobalDeviceManager();
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std::string HashName(const std::string &rank_list_name);
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class DeviceManager {
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// This class is used to manage the abstract devices, including group-related and stage-related management.
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public:
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DeviceManager() : local_rank_(0), global_rank_(0), stage_num_(0) { gm_ = GroupManager(); }
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~DeviceManager() = default;
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Status Init(const RankList &devices, int32_t local_device, const RankList &stage_map, const std::string &backend);
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static DeviceManager &GetInstance();
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RankList GetDeviceListByStageId(int32_t stage_id) const;
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RankList global_device_list(int32_t stage_id, int32_t rank, int32_t split_num) const;
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Device CreateNewDeviceByRank(int32_t rank) const;
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std::vector<Device> CreateDeviceListByRankList(RankList ranks);
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std::string GenerateGroupNameByRanks(RankList dev_ranks);
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Group CreateGroup(const std::string &group_name, const std::vector<Device> &devices);
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Group CreateGroup(const RankList &dev_ranks);
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std::shared_ptr<Stage> GetStageById(int32_t stage_id);
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size_t DeviceNum() const { return devices_.size(); }
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int32_t GetStageNum() const { return static_cast<const int32_t>(stage_devices_.size()); }
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int32_t global_rank() const { return global_rank_; }
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std::string backend() const { return backend_; }
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void set_global_rank(int32_t global_rank) { global_rank_ = global_rank; }
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void Clear();
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std::string world_group() const { return gm_.world_group(); }
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std::string FindRankListNameByHashName(const std::string &hash_name);
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private:
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std::vector<std::shared_ptr<Device>> devices_;
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// each stage has a list of devices
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std::vector<std::vector<int32_t>> stage_devices_;
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std::shared_ptr<Device> device_;
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std::vector<std::shared_ptr<Stage>> stages_;
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GroupManager gm_;
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std::string backend_;
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// bimap:
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std::map<std::string, std::string> rank_to_group_; // the key is rank list, value is hash name
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std::map<std::string, std::string> group_to_rank_; // the key is hash name, value is rank list
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int32_t local_rank_;
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int32_t global_rank_;
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int32_t stage_num_;
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};
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} // namespace parallel
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} // namespace mindspore
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#endif // MINDSPORE_CCSRC_FRONTEND_PARALLEL_DEVICE_MANAGER_H_
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