Line data    Source code

       1              : /**
       2              :  * Copyright (c) 2025 Huawei Technologies Co., Ltd.
       3              :  * This program is free software, you can redistribute it and/or modify it under the terms and conditions of
       4              :  * CANN Open Software License Agreement Version 2.0 (the "License").
       5              :  * Please refer to the License for details. You may not use this file except in compliance with the License.
       6              :  * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED,
       7              :  * INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.
       8              :  * See LICENSE in the root of the software repository for the full text of the License.
       9              :  */
      10              : 
      11              : #ifndef ALL_GATHER_MESH_PUB_H
      12              : #define ALL_GATHER_MESH_PUB_H
      13              : 
      14              : #include "alg_template_base_pub.h"
      15              : 
      16              : namespace hccl {
      17              : class AllGatherMesh : public AlgTemplateBase {
      18              : public:
      19              :     explicit AllGatherMesh(const HcclDispatcher dispatcher); // 所有大环的rank个数，commcombine提供接口
      20              : 
      21              :     ~AllGatherMesh() override;
      22              : 
      23              :     // should be called soon after template AllGatherMesh instance created
      24              :     HcclResult Prepare(
      25              :         std::vector<Stream>& meshStreams, std::vector<std::shared_ptr<LocalNotify>>& meshSignal,
      26              :         std::vector<std::shared_ptr<LocalNotify>>& meshSignalAux, u32 userRank = INVALID_VALUE_RANKID,
      27              :         HcomCollOpInfo* opInfo = nullptr, u32 interRank = INVALID_VALUE_RANKID, u32 interRankSize = 0) override;
      28              : 
      29              :     HcclResult RunAsync(const u32 rank, const u32 rankSize, const std::vector<LINK>& links) override;
      30              : 
      31              : protected:
      32              :     // 获取向该rank往前的第i个rank
      33            0 :     inline u32 BackwardRank(u32 rank, u32 rankSize, u32 step) const
      34              :     {
      35            0 :         if (rankSize == 0) {
      36            0 :             return 0;
      37              :         }
      38            0 :         return (rank + rankSize - step) % rankSize;
      39              :     }
      40              : 
      41              :     inline u32 ForwardRank(u32 rank, u32 rankSize, u32 step) const
      42              :     {
      43              :         if (rankSize == 0) {
      44              :             return 0;
      45              :         }
      46              :         return (rank + step) % rankSize;
      47              :     }
      48              :     virtual HcclResult RunAllGather(
      49              :         const std::vector<LINK>& links, const std::vector<Slice>& outputSlices, const std::vector<Slice>& inputSlices);
      50              :     std::vector<Stream> meshStreams_; /** 多steam**/
      51              : 
      52              :     std::vector<std::shared_ptr<LocalNotify>>* meshSignal_{nullptr};    /* 每个ring创建一个signal */
      53              :     std::vector<std::shared_ptr<LocalNotify>>* meshSignalAux_{nullptr}; /* 从stream wait，主steam record */
      54              :     u32 interRank_;                                                     // 在所有rank环上的rankid
      55              :     u32 interRankSize_;
      56              :     u32 userRank_;
      57              : 
      58              : private:
      59              :     HcclResult Tx(const LINK& link, const Slice& txSlice, const Slice& dstSlice, Stream stream);
      60              :     HcclResult Rx(const LINK& link, const Slice& srcSlice, const Slice& rxSlice, Stream stream);
      61              : };
      62              : } // namespace hccl
      63              : 
      64              : #endif /* ALL_GATHER_MESH_PUB_H */