LCOV - code coverage report
Current view: top level - legacy/ascend950/service/collective/alg/coll_alg_factory/alg_template/ins_alg_template - ins_temp_reduce_nhr.cc (source / functions) Coverage Total Hit
Test: coverage.info Lines: 0.0 % 190 0
Test Date: 2026-08-18 17:47:01 Functions: 0.0 % 15 0

            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              : #include "log.h"
      12              : #include "alg_data_trans_wrapper.h"
      13              : #include "ins_temp_reduce_nhr.h"
      14              : 
      15              : namespace Hccl {
      16            0 : InsTempReduceNHR::InsTempReduceNHR(
      17              :     const RankId virtualRank, const u32 tempRankSize, const std::vector<std::vector<RankId>>& tempVTopo,
      18            0 :     const std::map<RankId, u32>& tempVirtRankMap)
      19            0 :     : InsAlgTemplateBase(virtualRank, tempRankSize, tempVTopo, tempVirtRankMap)
      20            0 : {}
      21              : 
      22            0 : InsTempReduceNHR::~InsTempReduceNHR() {}
      23              : 
      24            0 : HcclResult InsTempReduceNHR::CalcRes(AlgTempResReq& tempResReq)
      25              : {
      26              :     // NHR 需要的 que Num 为 1
      27            0 :     tempResReq.queNum = 1;
      28            0 :     tempResReq.streamNum = tempResReq.queNum;
      29            0 :     tempResReq.queNotifys = CreateMasterSlaveQueNotifiesRequest(tempResReq.queNum);
      30              : 
      31            0 :     CHK_PRT_RET(
      32              :         CalcResLinksNHR(myRank_, tempRankSize_, tempVTopo_, tempResReq) != HcclResult::HCCL_SUCCESS,
      33              :         HCCL_ERROR("[CollAlgFactory] [InsTempReduceNHR] Rank [%d], resLinks calculation error!", myRank_),
      34              :         HcclResult::HCCL_E_INTERNAL);
      35              : 
      36            0 :     return HcclResult::HCCL_SUCCESS;
      37              : }
      38              : 
      39              : /*
      40              :  * Desc: 将数据按照rank切分为chuck 块,给后续的reduce操作使用
      41              :  * param: dataSize: 待处理的输入数据大小
      42              :  * return: sliceInfoVec: 存储数据切分结果
      43              :  * return: HcclResult
      44              :  */
      45            0 : HcclResult InsTempReduceNHR::CalcSlice(const u64 dataSize, RankSliceInfo& sliceInfoVec)
      46              : {
      47              :     // 按 rank 切分数据(与 AllReduceNHR 保持一致)
      48            0 :     std::vector<SliceInfo> tmp(tempVTopo_.size());
      49            0 :     sliceInfoVec.resize(tempRankSize_, tmp);
      50              : 
      51            0 :     u64 unitAlignSize = DataTypeSizeGet(dataType_);
      52            0 :     u64 chunkSize = RoundUp(dataSize, (tempRankSize_ * unitAlignSize)) * unitAlignSize;
      53              : 
      54            0 :     u64 accumOff = 0;
      55            0 :     for (u32 rankIdx = 0; rankIdx < tempRankSize_; rankIdx++) {
      56            0 :         u64 currChunkSize = ((dataSize - accumOff) > chunkSize) ? chunkSize : (dataSize - accumOff);
      57            0 :         SliceInfo slice = {accumOff, currChunkSize};
      58            0 :         sliceInfoVec[rankIdx][0] = slice;
      59            0 :         accumOff += currChunkSize;
      60              :     }
      61              : 
      62            0 :     CHK_PRT_RET(
      63              :         (sliceInfoVec[tempRankSize_ - 1][0].offset + sliceInfoVec[tempRankSize_ - 1][0].size != dataSize),
      64              :         HCCL_ERROR("[InsTempReduceNHR] chunkSize:[%llu], Rank:[%d], SliceInfo calculation error!", chunkSize, myRank_),
      65              :         HcclResult::HCCL_E_INTERNAL);
      66              : 
      67            0 :     return HcclResult::HCCL_SUCCESS;
      68            0 : }
      69              : 
      70              : /*
      71              :  * Desc: 返回当前rank能处理的数据量和scratch buffer之间的比例关系
      72              :  * param: input: 输入数据位置
      73              :  * param: output 输出数据位置
      74              :  */
      75            0 : u32 InsTempReduceNHR::CalcScratchMultiple(BufferType input, BufferType output)
      76              : {
      77              :     (void)input;
      78              :     (void)output;
      79              :     // 单算子模式下需要 1 倍的 scratch(ccl buffer),图/流水(OFFLOAD)模式下不需要
      80            0 :     u32 multiple = 0;
      81            0 :     if (op_.opMode == OpMode::OPBASE) {
      82            0 :         multiple = 1;
      83              :     }
      84            0 :     return multiple;
      85              : }
      86              : 
      87            0 : HcclResult InsTempReduceNHR::GenExtIns(
      88              :     const TempFuncs& tempFuncs, const TemplateDataParams& tempAlgParams, const ResLinks& tempLinks,
      89              :     std::vector<InsQuePtr>& tempInsQues)
      90              : {
      91            0 :     HCCL_INFO("[InsTempReduceNHR][GenExtIns] ReduceNHR begin: rank[%d] start", myRank_);
      92            0 :     if (IsPcieLink(tempLinks)) {
      93            0 :         dmaMode_ = DmaMode::GET;
      94              :     }
      95            0 :     opMode_ = tempFuncs.opMode;
      96            0 :     enableCounterNotify_ = tempFuncs.enableCounterNotify;
      97            0 :     queNum_ = tempVTopo_.size();
      98              : 
      99            0 :     CHK_PRT_RET(
     100              :         queNum_ != tempInsQues.size(),
     101              :         HCCL_ERROR("[CollAlgFactory] [InsTempReduceNHR] Rank [%d], requiredQue Error.", myRank_),
     102              :         HcclResult::HCCL_E_INTERNAL);
     103              : 
     104              :     // 1. 切片
     105            0 :     RankSliceInfo sliceInfoVec;
     106            0 :     CHK_RET(CalcSlice(tempAlgParams.sliceSize, sliceInfoVec));
     107              : 
     108              :     // 2. PreCopy (OPBASE 模式下将 userIn -> scratch)
     109            0 :     CHK_RET(PreCopy(tempAlgParams, tempInsQues));
     110              : 
     111              :     // 3. ReduceScatter 阶段 (pairwise reduce)
     112            0 :     CHK_RET(RunReduceScatter(sliceInfoVec, tempLinks, tempInsQues));
     113              : 
     114              :     // 4. PrepareDataForGather 阶段
     115            0 :     CHK_RET(PrepareDataForGather(sliceInfoVec, tempInsQues));
     116              : 
     117              :     // 5. Gather 阶段 (将每个 chunk 聚合到 root)
     118            0 :     CHK_RET(RunGather(sliceInfoVec, tempLinks, tempInsQues));
     119              : 
     120              :     // 6. PostCopy (OPBASE 且在 root 上将 scratch -> userOut)
     121            0 :     CHK_RET(PostCopy(tempAlgParams, tempInsQues));
     122              : 
     123            0 :     HCCL_INFO("[InsTempReduceNHR][GenExtIns] ReduceNHR finished: rank[%d] end", myRank_);
     124            0 :     return HcclResult::HCCL_SUCCESS;
     125            0 : }
     126              : 
     127            0 : HcclResult InsTempReduceNHR::PreCopy(const TemplateDataParams& tempAlgParams, std::vector<InsQuePtr>& tempInsQues)
     128              : {
     129              :     // 单算子模式,需要先将数据拷贝到cclBuffer
     130            0 :     if (opMode_ == OpMode::OPBASE) {
     131            0 :         reduceInBuffType_ = BufferType::SCRATCH;
     132            0 :         reduceInBuffBaseOff_ = tempAlgParams.buffInfo.inBuffBaseOff;
     133              : 
     134            0 :         if (tempAlgParams.buffInfo.inBuffType != BufferType::SCRATCH) {
     135            0 :             HCCL_INFO("[InsTempReduceNHR][PreCopy] Opbase copy from userIn to scratchBuffer");
     136              :             DataSlice usrInSlices = DataSlice(
     137            0 :                 tempAlgParams.buffInfo.inBuffType, tempAlgParams.buffInfo.inBuffBaseOff, tempAlgParams.sliceSize);
     138              :             DataSlice scratchSlices
     139            0 :                 = DataSlice(BufferType::SCRATCH, tempAlgParams.buffInfo.scratchBuffBaseOff, tempAlgParams.sliceSize);
     140            0 :             CHK_RET(LocalCopy(tempInsQues[0], usrInSlices, scratchSlices));
     141            0 :             reduceInBuffBaseOff_ = tempAlgParams.buffInfo.scratchBuffBaseOff;
     142              :         } else {
     143            0 :             HCCL_INFO("[InsTempReduceNHR][PreCopy] skip precopy");
     144              :         }
     145              :     } else {
     146              :         // OFFLOAD 图模式直接在用户 buffer 上操作
     147            0 :         HCCL_INFO("[InsTempReduceNHR][PreCopy] offload skip precopy");
     148            0 :         reduceInBuffType_ = tempAlgParams.buffInfo.inBuffType;
     149            0 :         reduceInBuffBaseOff_ = tempAlgParams.buffInfo.inBuffBaseOff;
     150              :     }
     151              : 
     152            0 :     reduceOutBuffType_ = tempAlgParams.buffInfo.outBuffType;
     153            0 :     reduceOutBuffBaseOff_ = tempAlgParams.buffInfo.outBuffBaseOff;
     154              : 
     155            0 :     return HcclResult::HCCL_SUCCESS;
     156              : }
     157              : 
     158              : // 将reduceScatter之后的数据先放到usrOut
     159              : HcclResult
     160            0 : InsTempReduceNHR::PrepareDataForGather(const RankSliceInfo& sliceInfoVec, std::vector<InsQuePtr>& tempInsQues)
     161              : {
     162              :     // 如果是单算子模式,在原来的位置要先做完Gather,然后postCopy把数据放到usrOut
     163              :     // 如果是图模式,直接把数据放到usrOUt,然后在usrOut上做Gather
     164            0 :     HCCL_INFO("[InsTempReduceNHR][PrepareDataForGather] prepare data for Gather");
     165              : 
     166            0 :     if (opMode_ == OpMode::OFFLOAD) {
     167            0 :         u64 size = sliceInfoVec[tempVirtRankMap_[myRank_]][0].size;
     168            0 :         u64 srcOffset = sliceInfoVec[tempVirtRankMap_[myRank_]][0].offset;
     169            0 :         u64 dstOffset = sliceInfoVec[tempVirtRankMap_[myRank_]][0].offset;
     170            0 :         DataSlice srcSlice = DataSlice(reduceInBuffType_, reduceInBuffBaseOff_ + srcOffset, size);
     171            0 :         DataSlice dstSlice = DataSlice(reduceOutBuffType_, reduceOutBuffBaseOff_ + dstOffset, size);
     172            0 :         CHK_RET(LocalCopy(tempInsQues[0], srcSlice, dstSlice));
     173            0 :         reduceInBuffType_ = reduceOutBuffType_;
     174            0 :         reduceInBuffBaseOff_ = reduceOutBuffBaseOff_;
     175              :     }
     176              : 
     177            0 :     return HcclResult::HCCL_SUCCESS;
     178              : }
     179              : 
     180            0 : HcclResult InsTempReduceNHR::PostCopy(const TemplateDataParams& tempAlgParams, std::vector<InsQuePtr>& tempInsQues)
     181              : {
     182              :     // PostCopy 仅在 OPBASE 并且在 root 上执行(root 收到完整结果后写回用户 out)
     183            0 :     RankId rootRank = this->root_; // Executor 在 CreateTemplates 时已调用 SetRoot(op_.root)
     184              : 
     185            0 :     if (myRank_ != rootRank) {
     186            0 :         HCCL_DEBUG("[InsTempReduceNHR][PostCopy] not root, skip postcopy rank[%d]", myRank_);
     187            0 :         return HcclResult::HCCL_SUCCESS;
     188              :     }
     189              : 
     190            0 :     if (opMode_ == OpMode::OPBASE) {
     191            0 :         HCCL_INFO("[InsTempReduceNHR][PostCopy] Opbase root copy from scratchBuffer to userOut");
     192            0 :         DataSlice scratchSlices = DataSlice(reduceInBuffType_, reduceInBuffBaseOff_, tempAlgParams.sliceSize);
     193            0 :         DataSlice usrOutSlices = DataSlice(reduceOutBuffType_, reduceOutBuffBaseOff_, tempAlgParams.sliceSize);
     194            0 :         CHK_RET(LocalCopy(tempInsQues[0], scratchSlices, usrOutSlices));
     195              :     } else {
     196            0 :         HCCL_INFO("[InsTempReduceNHR][PostCopy] offload skip postcopy");
     197              :     }
     198              : 
     199            0 :     return HcclResult::HCCL_SUCCESS;
     200              : }
     201              : 
     202            0 : HcclResult InsTempReduceNHR::RunReduceScatter(
     203              :     const RankSliceInfo& sliceInfoVec, const ResLinks& tempLinks, std::vector<InsQuePtr>& tempInsQues)
     204              : {
     205            0 :     std::vector<AicpuNHRStepInfo> stepInfoList;
     206            0 :     CHK_RET(GetStepInfoList(stepInfoList));
     207              : 
     208            0 :     for (auto& stepInfo : stepInfoList) {
     209            0 :         HCCL_DEBUG(
     210              :             "[InsTempReduceNHR][RunReduceScatter] step[%u], myRank[%u], toRank[%u], fromRank[%u], nSlices[%u].",
     211              :             stepInfo.step, stepInfo.myRank, stepInfo.toRank, stepInfo.fromRank, stepInfo.nSlices);
     212              : 
     213            0 :         const std::vector<LinkData>& linkRecv = tempLinks.at(GetRankFromMap(stepInfo.fromRank));
     214            0 :         const std::vector<LinkData>& linkSend = tempLinks.at(GetRankFromMap(stepInfo.toRank));
     215              : 
     216            0 :         std::vector<DataSlice> txSlices;
     217            0 :         std::vector<DataSlice> rxSlices;
     218              : 
     219              :         // 发送和接收 slice 都发生在 reduceInBuffType_ 上(scratch 或用户 buffer)
     220            0 :         for (u32 i = 0; i < stepInfo.nSlices; i++) {
     221            0 :             u64 txOffset = sliceInfoVec[stepInfo.txSliceIdxs[i]][0].offset + reduceInBuffBaseOff_;
     222            0 :             u64 txSize = sliceInfoVec[stepInfo.txSliceIdxs[i]][0].size;
     223            0 :             u64 rxOffset = sliceInfoVec[stepInfo.rxSliceIdxs[i]][0].offset + reduceInBuffBaseOff_;
     224            0 :             u64 rxSize = sliceInfoVec[stepInfo.rxSliceIdxs[i]][0].size;
     225              : 
     226            0 :             txSlices.push_back(DataSlice(reduceInBuffType_, txOffset, txSize));
     227            0 :             rxSlices.push_back(DataSlice(reduceInBuffType_, rxOffset, rxSize));
     228              :         }
     229              : 
     230              :         SendRecvReduceInfo sendRecvReduceInfo{
     231            0 :             {linkSend[0], linkRecv[0]}, {{txSlices, txSlices}, {rxSlices, rxSlices}}, dataType_, redOp_};
     232              : 
     233            0 :         CHK_PRT_RET(
     234              :             SendRecvReduce(sendRecvReduceInfo, tempInsQues[0], 0, true, dmaMode_) != HcclResult::HCCL_SUCCESS,
     235              :             HCCL_ERROR("[InsTempReduceNHR] RunReduceScatter SendRecvReduce failed"), HcclResult::HCCL_E_INTERNAL);
     236            0 :     }
     237              : 
     238            0 :     return HcclResult::HCCL_SUCCESS;
     239            0 : }
     240              : 
     241            0 : HcclResult InsTempReduceNHR::RunGather(
     242              :     const RankSliceInfo& sliceInfoVec, const ResLinks& tempLinks, std::vector<InsQuePtr>& tempInsQues)
     243              : {
     244            0 :     u32 nSteps = GetNHRStepNum(tempRankSize_);
     245            0 :     for (u32 step = 0; step < nSteps; step++) {
     246            0 :         AicpuNHRStepInfo stepInfo;
     247            0 :         CHK_RET(GetStepInfo(step, nSteps, stepInfo));
     248              : 
     249            0 :         const std::vector<LinkData>& linkRecv = tempLinks.at(GetRankFromMap(stepInfo.fromRank));
     250            0 :         const std::vector<LinkData>& linkSend = tempLinks.at(GetRankFromMap(stepInfo.toRank));
     251              : 
     252            0 :         std::vector<DataSlice> txSlices;
     253            0 :         std::vector<DataSlice> rxSlices;
     254            0 :         for (u32 i = 0; i < stepInfo.nSlices; i++) {
     255            0 :             u64 txOffset = sliceInfoVec[stepInfo.txSliceIdxs[i]][0].offset + reduceInBuffBaseOff_;
     256            0 :             u64 txSize = sliceInfoVec[stepInfo.txSliceIdxs[i]][0].size;
     257            0 :             u64 rxOffset = sliceInfoVec[stepInfo.rxSliceIdxs[i]][0].offset + reduceInBuffBaseOff_;
     258            0 :             u64 rxSize = sliceInfoVec[stepInfo.rxSliceIdxs[i]][0].size;
     259              : 
     260            0 :             txSlices.push_back(DataSlice(reduceInBuffType_, txOffset, txSize));
     261            0 :             rxSlices.push_back(DataSlice(reduceInBuffType_, rxOffset, rxSize));
     262              :         }
     263              : 
     264            0 :         TxRxLinks sendRecvLinks(linkSend[0], linkRecv[0]);
     265            0 :         TxRxSlicesList sendRecvSlicesList({txSlices, txSlices}, {rxSlices, rxSlices});
     266              : 
     267            0 :         SendRecvInfo sendRecvInfo(sendRecvLinks, sendRecvSlicesList);
     268            0 :         CHK_PRT_RET(
     269              :             SendRecv(sendRecvInfo, tempInsQues[0], 0, true, dmaMode_) != HcclResult::HCCL_SUCCESS,
     270              :             HCCL_ERROR("[InsTempReduceNHR] RunGather send/recv failed"), HcclResult::HCCL_E_INTERNAL);
     271            0 :     }
     272              : 
     273            0 :     return HcclResult::HCCL_SUCCESS;
     274              : }
     275              : 
     276            0 : HcclResult InsTempReduceNHR::GetStepInfo(u32 step, u32 nSteps, AicpuNHRStepInfo& stepInfo)
     277              : {
     278            0 :     u32 rankIdx = tempVirtRankMap_[myRank_];
     279            0 :     stepInfo.txSliceIdxs.clear();
     280            0 :     stepInfo.rxSliceIdxs.clear();
     281            0 :     stepInfo.step = step;
     282            0 :     stepInfo.myRank = rankIdx;
     283              : 
     284              :     // 计算通信对象
     285            0 :     u32 deltaRank = 1 << (nSteps - 1 - step);
     286            0 :     u32 recvFrom = (rankIdx + tempRankSize_ - deltaRank) % tempRankSize_;
     287            0 :     u32 sendTo = (rankIdx + deltaRank) % tempRankSize_;
     288              : 
     289              :     // 数据份数和数据编号增量
     290            0 :     u32 nSlices = (tempRankSize_ - 1 + (1 << (nSteps - 1 - step))) / (1 << (nSteps - step));
     291            0 :     u32 deltaSliceIndex = 1 << (nSteps - step);
     292            0 :     u32 txSliceIdx = rankIdx;
     293            0 :     u32 rxSliceIdx = (rankIdx - (1 << (nSteps - 1 - step)) + tempRankSize_) % tempRankSize_;
     294              : 
     295            0 :     stepInfo.nSlices = nSlices;
     296            0 :     stepInfo.toRank = sendTo;
     297            0 :     stepInfo.fromRank = recvFrom;
     298              : 
     299            0 :     for (u32 i = 0; i < nSlices; i++) {
     300            0 :         stepInfo.txSliceIdxs.push_back(txSliceIdx);
     301            0 :         stepInfo.rxSliceIdxs.push_back(rxSliceIdx);
     302              : 
     303            0 :         HCCL_DEBUG("[InsTempReduceNHR][GetStepInfo] i[%u] txSliceIdx[%u] rxSliceIdx[%u]", i, txSliceIdx, rxSliceIdx);
     304              : 
     305            0 :         txSliceIdx = (txSliceIdx + tempRankSize_ - deltaSliceIndex) % tempRankSize_;
     306            0 :         rxSliceIdx = (rxSliceIdx + tempRankSize_ - deltaSliceIndex) % tempRankSize_;
     307              :     }
     308            0 :     return HcclResult::HCCL_SUCCESS;
     309              : }
     310              : 
     311              : //  计算每轮收发的对端以及slice编号
     312            0 : HcclResult InsTempReduceNHR::GetStepInfoList(std::vector<AicpuNHRStepInfo>& stepInfoList)
     313              : {
     314              :     // 将本 rank 号转换成算法使用的索引号
     315            0 :     u32 rankIdx = tempVirtRankMap_[myRank_];
     316            0 :     stepInfoList.clear();
     317              : 
     318            0 :     u32 nSteps = GetNHRStepNum(tempRankSize_);
     319            0 :     stepInfoList.resize(nSteps);
     320            0 :     for (u32 step = 0; step < nSteps; step++) {
     321              :         // 计算通信对象
     322            0 :         u32 deltaRank = 1 << step;
     323            0 :         u32 sendTo = (rankIdx + tempRankSize_ - deltaRank) % tempRankSize_;
     324            0 :         u32 recvFrom = (rankIdx + deltaRank) % tempRankSize_;
     325              : 
     326              :         // 数据份数和数据编号增量
     327            0 :         u32 nSlices = (tempRankSize_ - 1 + (1 << step)) / (1 << (step + 1));
     328            0 :         u32 deltaSliceIndex = 1 << (step + 1);
     329            0 :         u32 txSliceIdx = sendTo;
     330            0 :         u32 rxSliceIdx = rankIdx;
     331              : 
     332            0 :         AicpuNHRStepInfo& currStepInfo = stepInfoList[step];
     333            0 :         currStepInfo.step = step;
     334            0 :         currStepInfo.myRank = rankIdx;
     335            0 :         currStepInfo.nSlices = nSlices;
     336            0 :         currStepInfo.toRank = sendTo;
     337            0 :         currStepInfo.fromRank = recvFrom;
     338              : 
     339              :         // 计算本rank在每轮收/发中的slice编号
     340            0 :         currStepInfo.txSliceIdxs.reserve(nSlices);
     341            0 :         currStepInfo.rxSliceIdxs.reserve(nSlices);
     342            0 :         for (u32 i = 0; i < nSlices; i++) {
     343            0 :             currStepInfo.txSliceIdxs.push_back(txSliceIdx);
     344            0 :             currStepInfo.rxSliceIdxs.push_back(rxSliceIdx);
     345            0 :             HCCL_DEBUG(
     346              :                 "[InsTempReduceNHR][GetStepInfoList] i[%u] txSliceIdx[%u] rxSliceIdx[%u]", i, txSliceIdx, rxSliceIdx);
     347            0 :             txSliceIdx = (txSliceIdx + tempRankSize_ - deltaSliceIndex) % tempRankSize_;
     348            0 :             rxSliceIdx = (rxSliceIdx + tempRankSize_ - deltaSliceIndex) % tempRankSize_;
     349              :         }
     350              :     }
     351            0 :     return HcclResult::HCCL_SUCCESS;
     352              : }
     353              : 
     354            0 : RankId InsTempReduceNHR::GetRankFromMap(const u32 rankIdx)
     355              : {
     356            0 :     RankId rank = -1;
     357            0 :     for (auto& pair : tempVirtRankMap_) {
     358            0 :         if (pair.second == rankIdx) {
     359            0 :             rank = pair.first;
     360            0 :             break;
     361              :         }
     362              :     }
     363            0 :     return rank;
     364              : }
     365              : 
     366              : } // namespace Hccl
        

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