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 <cmath>
12 : #include "alg_template_register.h"
13 : #include "reduce_scatter_plant_local_reduce.h"
14 :
15 : namespace hccl {
16 : constexpr u32 DEVICE_EIGHT = 8;
17 : constexpr u32 FACTOR_NUM_TWO = 2;
18 0 : ReduceScatterPlantLocalReduce::ReduceScatterPlantLocalReduce(const HcclDispatcher dispatcher)
19 0 : : AlgTemplateBase(dispatcher)
20 0 : {}
21 :
22 0 : ReduceScatterPlantLocalReduce::~ReduceScatterPlantLocalReduce() {}
23 :
24 0 : HcclResult ReduceScatterPlantLocalReduce::Prepare(
25 : void* inputMemPtr, DeviceMem& cclInMem, DeviceMem& outputMem, const Stream& stream, std::vector<Stream>& subStreams,
26 : std::vector<std::shared_ptr<LocalNotify>>& meshSignal, std::vector<std::shared_ptr<LocalNotify>>& meshSignalAux,
27 : GroupSlicesInfo& grouSlicesInfo, const HcclReduceOp reductionOp, u32 all2allOffset, const HcclDataType dataType,
28 : bool isNeedSpaceBorrow, bool reverseMemUsage, bool isA3CrossNode)
29 : {
30 0 : inputMemPtr_ = inputMemPtr; // UserInPtr，All2All使用
31 0 : inputMem_ = cclInMem; // 空拷贝 & 存放最后一块数据（Allreduce非整除场景）
32 0 : outputMem_ = outputMem; // 单算子CclOut 图模式Scrach/UserOut，LocalReduce使用
33 0 : stream_ = stream;
34 0 : subStreams_ = subStreams;
35 0 : meshSignalPtr_ = &meshSignal;
36 0 : meshSignalAuxPtr_ = &meshSignalAux;
37 0 : groupSlicesInfo_ = std::move(grouSlicesInfo);
38 0 : reductionOp_ = reductionOp;
39 0 : all2allOffset_ = all2allOffset;
40 0 : dataType_ = dataType;
41 0 : isNeedSpaceBorrow_ = isNeedSpaceBorrow;
42 0 : isA3CrossNode_ = isA3CrossNode;
43 0 : if (reverseMemUsage) {
44 : // 交换两块buffer的用途，in buffer作为输出buffer
45 0 : HCCL_INFO("[%s] reverse memory usage.", __func__);
46 0 : std::swap(scratchMemType_, outputMemType_);
47 0 : std::swap(inputMem_, outputMem_);
48 : }
49 0 : return HCCL_SUCCESS;
50 : }
51 :
52 0 : HcclResult ReduceScatterPlantLocalReduce::MainRecordSub(Stream& mainStream, u32 firstSubStreamIndex, u32 totalTask)
53 : {
54 0 : for (u32 streamIndex = firstSubStreamIndex; streamIndex < totalTask; streamIndex++) {
55 0 : CHK_RET(LocalNotify::Post(mainStream, dispatcher_, (*meshSignalAuxPtr_)[streamIndex], profilerInput_.stage));
56 : }
57 0 : return HCCL_SUCCESS;
58 : }
59 :
60 0 : HcclResult ReduceScatterPlantLocalReduce::SubWaitMain(u32 firstSubStreamIndex, u32 totalTask)
61 : {
62 0 : for (u32 streamIndex = firstSubStreamIndex; streamIndex < totalTask; streamIndex++) {
63 0 : CHK_RET(LocalNotify::Wait(
64 : subStreams_[streamIndex], dispatcher_, (*meshSignalAuxPtr_)[streamIndex], profilerInput_.stage));
65 : }
66 0 : return HCCL_SUCCESS;
67 : }
68 :
69 0 : HcclResult ReduceScatterPlantLocalReduce::MainWaitSub(Stream& mainStream, u32 firstSubStreamIndex, u32 totalTask)
70 : {
71 0 : for (u32 streamIndex = firstSubStreamIndex; streamIndex < totalTask; streamIndex++) {
72 0 : CHK_RET(LocalNotify::Wait(mainStream, dispatcher_, (*meshSignalPtr_)[streamIndex], profilerInput_.stage));
73 : }
74 0 : return HCCL_SUCCESS;
75 : }
76 :
77 0 : HcclResult ReduceScatterPlantLocalReduce::SubRecordMain(u32 firstSubStreamIndex, u32 totalTask)
78 : {
79 0 : for (u32 streamIndex = firstSubStreamIndex; streamIndex < totalTask; streamIndex++) {
80 0 : CHK_RET(LocalNotify::Post(
81 : subStreams_[streamIndex], dispatcher_, (*meshSignalPtr_)[streamIndex], profilerInput_.stage));
82 : }
83 0 : return HCCL_SUCCESS;
84 : }
85 :
86 0 : HcclResult ReduceScatterPlantLocalReduce::MainRecordLocalReduceWait(u32 lRMainStreamIndex)
87 : {
88 0 : CHK_RET(LocalNotify::Post(stream_, dispatcher_, (*meshSignalAuxPtr_)[lRMainStreamIndex], profilerInput_.stage));
89 0 : CHK_RET(LocalNotify::Wait(
90 : subStreams_[lRMainStreamIndex], dispatcher_, (*meshSignalAuxPtr_)[lRMainStreamIndex], profilerInput_.stage));
91 0 : return HCCL_SUCCESS;
92 : }
93 :
94 0 : u32 ReduceScatterPlantLocalReduce::CalcOutputIndex(const u32 round)
95 : {
96 0 : return (all2allOffset_ + round + localRank_) % rankSize_;
97 : }
98 :
99 0 : bool ReduceScatterPlantLocalReduce::isLastGroup(const u32 groupId) { return groupId == groupSlicesInfo_.size() - 1; }
100 :
101 0 : bool ReduceScatterPlantLocalReduce::isLastRank(const u32 rankId) { return rankId == rankSize_ - 1; }
102 :
103 0 : bool ReduceScatterPlantLocalReduce::isLastBlockData(const u32 outputIndex) { return outputIndex == rankSize_ - 1; }
104 :
105 0 : HcclResult ReduceScatterPlantLocalReduce::RunAsync(const u32 rank, const u32 rankSize, const std::vector<LINK>& links)
106 : {
107 0 : HCCL_INFO(
108 : "ReduceScatterPlantLocalReduce run: rank[%u] ranksize[%u] inputMem[%p] outputMem[%p].", rank, rankSize,
109 : inputMem_.ptr(), outputMem_.ptr());
110 0 : CHK_SMART_PTR_NULL(dispatcher_);
111 0 : CHK_PTR_NULL(stream_.ptr());
112 0 : CHK_PRT_RET(
113 : links.size() < rankSize,
114 : HCCL_ERROR("[%s]rank[%u] linksize[%llu] is less than rankSize[%u]", __func__, rank, links.size(), rankSize),
115 : HCCL_E_INTERNAL);
116 :
117 0 : rankSize_ = rankSize;
118 0 : localRank_ = rank;
119 :
120 : // All2All主流（主流）通知LocalReduce主流开始准备执行,
121 : // All2All需要rankSize条流，其中主流完成LocalCopy&第一个A2A任务，因此主从同步需要rankSize-2个任务。lRMainStreamId_需要-2
122 0 : all2allSubStreamNum_ = isA3CrossNode_ ? std::min(rankSize, DEVICE_EIGHT) - 1 : rankSize - 2;
123 0 : lRMainStreamId_ = all2allSubStreamNum_;
124 :
125 0 : CHK_RET(AlgTemplateBase::ExecEmptyTask(inputMem_, outputMem_, stream_, dispatcher_));
126 0 : CHK_RET(MainRecordLocalReduceWait(lRMainStreamId_));
127 : // 额外一次LocalReduce主流通知All2All主流准备好接受信息（通知第一次执行完的All2AllWait）
128 0 : CHK_RET(LocalNotify::Post(
129 : subStreams_[lRMainStreamId_], dispatcher_, (*meshSignalPtr_)[lRMainStreamId_], profilerInput_.stage));
130 :
131 0 : HcclResult ret = HCCL_SUCCESS;
132 0 : for (u32 groupId = 0; groupId < groupSlicesInfo_.size(); groupId++) {
133 0 : const MemBlockInfo& memBlockInfo = groupSlicesInfo_[groupId];
134 0 : if (isA3CrossNode_) {
135 0 : ret = RunGroupAlltoAll(links, groupId, memBlockInfo);
136 : } else {
137 0 : ret = RunAlltoAll(links, groupId, memBlockInfo);
138 : }
139 0 : CHK_PRT_RET(
140 : ret != HCCL_SUCCESS,
141 : HCCL_ERROR(
142 : "[%s]RunAlltoAll or RunGroupAlltoAll failed, localRank[%u], groupId[%u]", __func__, localRank_,
143 : groupId),
144 : ret);
145 :
146 0 : CHK_RET(LocalNotify::Wait(stream_, dispatcher_, (*meshSignalPtr_)[lRMainStreamId_], profilerInput_.stage));
147 0 : CHK_RET(AlgTemplateBase::ExecEmptyTask(inputMem_, outputMem_, stream_, dispatcher_));
148 0 : CHK_RET(MainRecordLocalReduceWait(lRMainStreamId_));
149 0 : CHK_RET(AlgTemplateBase::ExecEmptyTask(inputMem_, outputMem_, subStreams_[lRMainStreamId_], dispatcher_));
150 :
151 0 : ret = RunLocalReduce(groupId, memBlockInfo);
152 0 : CHK_PRT_RET(
153 : ret != HCCL_SUCCESS,
154 : HCCL_ERROR("[%s]LocalReduce failed, localRank[%u], groupId[%u]", __func__, localRank_, groupId), ret);
155 :
156 : // LocalReduce主流通知All2All主流执行完成，可以下发下一次LocalReduce操作
157 0 : CHK_RET(LocalNotify::Post(
158 : subStreams_[lRMainStreamId_], dispatcher_, (*meshSignalPtr_)[lRMainStreamId_], profilerInput_.stage));
159 : }
160 :
161 : // All2All主流等待最后一次LocalReduce执行完成
162 0 : CHK_RET(LocalNotify::Wait(stream_, dispatcher_, (*meshSignalPtr_)[lRMainStreamId_], profilerInput_.stage));
163 0 : CHK_RET(AlgTemplateBase::ExecEmptyTask(inputMem_, outputMem_, stream_, dispatcher_));
164 0 : HCCL_INFO("ReduceScatterPlantLocalReduce finished: localRank[%u] ranksize[%u]", localRank_, rankSize_);
165 0 : return HCCL_SUCCESS;
166 : }
167 :
168 0 : HcclResult ReduceScatterPlantLocalReduce::LocalCopy(u32 groupId, const MemBlockInfo& memBlockInfo)
169 : {
170 0 : u64 sliceSize = memBlockInfo.size[localRank_];
171 0 : if (sliceSize == 0) {
172 0 : return HCCL_SUCCESS;
173 : }
174 :
175 : DeviceMem src
176 0 : = DeviceMem::create(static_cast<u8*>(inputMemPtr_) + memBlockInfo.userInputOffsets[localRank_], sliceSize);
177 :
178 : // 当非最后一组最后一卡且outputIndex是最后一块时，Copy至CclIn/UserIn预留位
179 0 : DeviceMem dst;
180 0 : u32 outputIndex = CalcOutputIndex(localRank_);
181 0 : if (isNeedSpaceBorrow_ && isLastBlockData(outputIndex) && !(isLastRank(localRank_) && isLastGroup(groupId))) {
182 0 : dst = inputMem_.range(memBlockInfo.outputOffsets[localRank_], sliceSize);
183 : } else {
184 0 : dst = outputMem_.range(memBlockInfo.outputOffsets[outputIndex], sliceSize);
185 : }
186 0 : CHK_RET(HcclD2DMemcpyAsync(dispatcher_, dst, src, stream_));
187 0 : return HCCL_SUCCESS;
188 0 : }
189 :
190 0 : HcclResult ReduceScatterPlantLocalReduce::RunAlltoAll(
191 : const std::vector<LINK>& links, u32 groupId, const MemBlockInfo& memBlockInfo)
192 : {
193 : // 本卡优先拷贝同号位数据
194 0 : CHK_RET(LocalCopy(groupId, memBlockInfo));
195 : // 主流通知从流可以开始接受数据
196 0 : u32 all2allfirstSubStreamId = 0;
197 0 : CHK_RET(MainRecordSub(stream_, all2allfirstSubStreamId, all2allSubStreamNum_));
198 0 : CHK_RET(SubWaitMain(all2allfirstSubStreamId, all2allSubStreamNum_));
199 :
200 : // 开始数据拷贝
201 0 : u32 streamIndex = 0;
202 0 : for (u32 round = 0; round < rankSize_; round++) {
203 0 : if (round == localRank_) {
204 0 : continue;
205 : }
206 0 : Stream& subStream = (streamIndex == 0) ? stream_ : subStreams_[streamIndex - 1];
207 0 : CHK_SMART_PTR_NULL(links[round]);
208 0 : CHK_RET(links[round]->TxAck(subStream));
209 0 : CHK_RET(links[round]->RxAck(subStream));
210 0 : streamIndex++;
211 : }
212 :
213 0 : CHK_RET(SubRecordMain(all2allfirstSubStreamId, all2allSubStreamNum_));
214 0 : CHK_RET(MainWaitSub(stream_, all2allfirstSubStreamId, all2allSubStreamNum_));
215 0 : CHK_RET(AlgTemplateBase::ExecEmptyTask(inputMem_, outputMem_, subStreams_[lRMainStreamId_], dispatcher_));
216 :
217 0 : CHK_RET(MainRecordSub(stream_, all2allfirstSubStreamId, all2allSubStreamNum_));
218 0 : CHK_RET(SubWaitMain(all2allfirstSubStreamId, all2allSubStreamNum_));
219 0 : streamIndex = 0;
220 0 : for (u32 round = 0; round < rankSize_; round++) {
221 0 : if (round == localRank_) {
222 0 : continue;
223 : }
224 0 : Stream& subStream = (streamIndex == 0) ? stream_ : subStreams_[streamIndex - 1];
225 0 : CHK_SMART_PTR_NULL(links[round]);
226 :
227 0 : u64 sliceSize = memBlockInfo.size[round];
228 0 : if (sliceSize != 0) {
229 0 : u64 userMemInOffset = memBlockInfo.userInputOffsets[round];
230 0 : DeviceMem src = DeviceMem::create(static_cast<u8*>(inputMemPtr_) + userMemInOffset, sliceSize);
231 0 : u32 outputIndex = CalcOutputIndex(round);
232 0 : u64 dstOffset = 0;
233 0 : void* remMemPtr = nullptr;
234 0 : if (isNeedSpaceBorrow_ && isLastBlockData(outputIndex) && !(isLastRank(round) && isLastGroup(groupId))) {
235 0 : CHK_RET(links[round]->GetRemoteMem(scratchMemType_, &remMemPtr));
236 0 : dstOffset = memBlockInfo.outputOffsets[round];
237 : } else {
238 0 : CHK_RET(links[round]->GetRemoteMem(outputMemType_, &remMemPtr));
239 0 : dstOffset = memBlockInfo.outputOffsets[outputIndex];
240 : }
241 0 : DeviceMem dst = DeviceMem::create(static_cast<u8*>(remMemPtr) + dstOffset, sliceSize);
242 0 : CHK_RET(HcclD2DMemcpyAsync(
243 : dispatcher_, dst, src, subStream, links[round]->GetRemoteRank(), links[round]->GetLinkType()));
244 0 : }
245 0 : CHK_RET(links[round]->TxDataSignal(subStream));
246 0 : CHK_RET(links[round]->RxDataSignal(subStream));
247 0 : streamIndex++;
248 : }
249 :
250 : // 从流通知主流完成拷贝
251 0 : CHK_RET(SubRecordMain(all2allfirstSubStreamId, all2allSubStreamNum_));
252 0 : CHK_RET(MainWaitSub(stream_, all2allfirstSubStreamId, all2allSubStreamNum_));
253 0 : return HCCL_SUCCESS;
254 : }
255 :
256 0 : HcclResult ReduceScatterPlantLocalReduce::RunGroupAlltoAll(
257 : const std::vector<LINK>& links, u32 groupId, const MemBlockInfo& memBlockInfo)
258 : {
259 0 : constexpr u32 numInGroup = DEVICE_EIGHT;
260 0 : u32 numOfGroups = (rankSize_ + numInGroup - 1) / numInGroup;
261 :
262 : // 本卡优先拷贝同号位数据
263 0 : CHK_RET(LocalCopy(groupId, memBlockInfo));
264 :
265 0 : for (u32 idGroup = 0; idGroup < numOfGroups; ++idGroup) {
266 : // 主流通知从流可以开始接受数据
267 0 : u32 all2allfirstSubStreamId = 0;
268 0 : CHK_RET(MainRecordSub(stream_, all2allfirstSubStreamId, all2allSubStreamNum_));
269 0 : CHK_RET(SubWaitMain(all2allfirstSubStreamId, all2allSubStreamNum_));
270 :
271 : // 开始数据拷贝
272 0 : u32 streamIndex = 0;
273 0 : for (u32 cnt = 0, round = idGroup * numInGroup; round < rankSize_ && cnt < numInGroup; ++round, ++cnt) {
274 0 : if (round == 0) {
275 0 : continue;
276 : }
277 0 : u32 sendRank = (localRank_ + round) % rankSize_;
278 0 : u32 recvRank = (rankSize_ + localRank_ - round) % rankSize_;
279 0 : Stream& subStream = (streamIndex == 0) ? stream_ : subStreams_[streamIndex - 1];
280 0 : CHK_SMART_PTR_NULL(links[sendRank]);
281 0 : CHK_SMART_PTR_NULL(links[recvRank]);
282 0 : CHK_RET(links[recvRank]->TxAck(subStream));
283 0 : CHK_RET(links[sendRank]->RxAck(subStream));
284 0 : streamIndex++;
285 : }
286 :
287 0 : CHK_RET(SubRecordMain(all2allfirstSubStreamId, all2allSubStreamNum_));
288 0 : CHK_RET(MainWaitSub(stream_, all2allfirstSubStreamId, all2allSubStreamNum_));
289 0 : CHK_RET(AlgTemplateBase::ExecEmptyTask(inputMem_, outputMem_, subStreams_[lRMainStreamId_], dispatcher_));
290 :
291 0 : CHK_RET(MainRecordSub(stream_, all2allfirstSubStreamId, all2allSubStreamNum_));
292 0 : CHK_RET(SubWaitMain(all2allfirstSubStreamId, all2allSubStreamNum_));
293 0 : streamIndex = 0;
294 0 : for (u32 cnt = 0, round = idGroup * numInGroup; round < rankSize_ && cnt < numInGroup; ++round, ++cnt) {
295 0 : if (round == 0) {
296 0 : continue;
297 : }
298 0 : u32 sendRank = (localRank_ + round) % rankSize_;
299 0 : u32 recvRank = (rankSize_ + localRank_ - round) % rankSize_;
300 0 : Stream& subStream = (streamIndex == 0) ? stream_ : subStreams_[streamIndex - 1];
301 0 : CHK_SMART_PTR_NULL(links[sendRank]);
302 0 : CHK_SMART_PTR_NULL(links[recvRank]);
303 :
304 0 : u64 sliceSize = memBlockInfo.size[sendRank];
305 0 : if (sliceSize != 0) {
306 0 : u64 userMemInOffset = memBlockInfo.userInputOffsets[sendRank];
307 0 : DeviceMem src = DeviceMem::create(static_cast<u8*>(inputMemPtr_) + userMemInOffset, sliceSize);
308 0 : u32 outputIndex = CalcOutputIndex(sendRank);
309 0 : u64 dstOffset = 0;
310 0 : void* remMemPtr = nullptr;
311 0 : if (isNeedSpaceBorrow_ && isLastBlockData(outputIndex)
312 0 : && !(isLastRank(sendRank) && isLastGroup(groupId))) {
313 0 : CHK_RET(links[sendRank]->GetRemoteMem(scratchMemType_, &remMemPtr));
314 0 : dstOffset = memBlockInfo.outputOffsets[sendRank];
315 : } else {
316 0 : CHK_RET(links[sendRank]->GetRemoteMem(outputMemType_, &remMemPtr));
317 0 : dstOffset = memBlockInfo.outputOffsets[outputIndex];
318 : }
319 0 : DeviceMem dst = DeviceMem::create(static_cast<u8*>(remMemPtr) + dstOffset, sliceSize);
320 0 : CHK_RET(HcclD2DMemcpyAsync(
321 : dispatcher_, dst, src, subStream, links[sendRank]->GetRemoteRank(),
322 : links[sendRank]->GetLinkType()));
323 0 : }
324 0 : CHK_RET(links[sendRank]->TxDataSignal(subStream));
325 0 : CHK_RET(links[recvRank]->RxDataSignal(subStream));
326 0 : streamIndex++;
327 : }
328 :
329 : // 从流通知主流完成拷贝
330 0 : CHK_RET(SubRecordMain(all2allfirstSubStreamId, all2allSubStreamNum_));
331 0 : CHK_RET(MainWaitSub(stream_, all2allfirstSubStreamId, all2allSubStreamNum_));
332 : }
333 :
334 0 : return HCCL_SUCCESS;
335 : }
336 :
337 0 : HcclResult ReduceScatterPlantLocalReduce::RunLocalReduce(u32 groupId, const MemBlockInfo& memBlockInfo)
338 : {
339 0 : u32 reduceStep = static_cast<u32>(std::ceil(log2(rankSize_)));
340 0 : u64 srcOffset = memBlockInfo.inputOffsets[localRank_];
341 0 : u64 sliceSize = memBlockInfo.size[localRank_];
342 0 : u32 dataUnitSize = DataUnitSize(dataType_);
343 0 : if (dataUnitSize == 0) {
344 0 : HCCL_ERROR(
345 : "[ReduceScatterPlantLocalReduce][RunLocalReduce]data type[%s] out of range[%d, %d]",
346 : GetDataTypeEnumStr(dataType_).c_str(), HCCL_DATA_TYPE_INT8, static_cast<int>(HCCL_DATA_TYPE_RESERVED) - 1);
347 0 : return HCCL_E_INTERNAL;
348 : }
349 0 : u64 count = sliceSize / dataUnitSize;
350 :
351 0 : for (u32 round = 0; round < reduceStep; round++) {
352 0 : u32 tailIndex = std::min(rankSize_, static_cast<u32>(1 << static_cast<int>(reduceStep - round))) - 1;
353 0 : u32 headIndex = static_cast<u32>(1 << static_cast<int>((reduceStep - round - 1)));
354 0 : u32 reduceSubStreamNum = std::min(tailIndex - headIndex, DEVICE_EIGHT / FACTOR_NUM_TWO - 1);
355 : // LR主流通知从流可以开始接受数据
356 0 : for (u32 offset = 0; offset < reduceSubStreamNum; offset++) {
357 0 : u32 streamId = lRMainStreamId_ + offset + 1;
358 : // 只有reduce任务 > 1时才需要主从流同步: LR主流通知从流, 从流Wait LR主流
359 0 : CHK_RET(LocalNotify::Post(
360 : subStreams_[lRMainStreamId_], dispatcher_, (*meshSignalAuxPtr_)[streamId], profilerInput_.stage));
361 0 : CHK_RET(LocalNotify::Wait(
362 : subStreams_[streamId], dispatcher_, (*meshSignalAuxPtr_)[streamId], profilerInput_.stage));
363 : }
364 :
365 : // LocalReduce操作
366 0 : for (u32 offset = 0; offset <= tailIndex - headIndex; offset++) {
367 0 : u32 inputIndex = CalcOutputIndex(headIndex + offset); // reduce的源数据offset
368 0 : u32 outputIndex = CalcOutputIndex(offset); // reduce的目标offset
369 0 : u32 streamOffset = offset % (reduceSubStreamNum + 1);
370 0 : Stream& subStream = subStreams_[lRMainStreamId_ + streamOffset];
371 0 : if (sliceSize == 0) {
372 0 : continue;
373 : }
374 : void* srcPtr;
375 : void* dstPtr;
376 0 : if (isNeedSpaceBorrow_ && !(isLastRank(localRank_) && isLastGroup(groupId))
377 0 : && isLastBlockData(inputIndex)) {
378 0 : srcPtr = static_cast<u8*>(inputMem_.ptr()) + srcOffset;
379 : } else {
380 0 : srcPtr = static_cast<u8*>(outputMem_.ptr()) + memBlockInfo.outputOffsets[inputIndex];
381 : }
382 :
383 0 : if (isNeedSpaceBorrow_ && !(isLastRank(localRank_) && isLastGroup(groupId))
384 0 : && isLastBlockData(outputIndex)) {
385 0 : dstPtr = static_cast<u8*>(inputMem_.ptr()) + srcOffset;
386 : } else {
387 0 : dstPtr = static_cast<u8*>(outputMem_.ptr()) + memBlockInfo.outputOffsets[outputIndex];
388 : }
389 :
390 0 : CHK_RET(HcclReduceAsync(
391 : dispatcher_, srcPtr, count, dataType_, reductionOp_, subStream, dstPtr, INVALID_VALUE_RANKID,
392 : LinkType::LINK_ONCHIP, INLINE_REDUCE_BIT));
393 : }
394 :
395 : // 从流通知LR主流可以开始下一轮
396 0 : for (u32 offset = 0; offset < reduceSubStreamNum; offset++) {
397 0 : u32 streamId = lRMainStreamId_ + offset + 1;
398 : // 只有reduce任务 > 1时才需要主从流同步: LR主流通知从流, 从流Wait LR主流
399 0 : CHK_RET(LocalNotify::Post(
400 : subStreams_[streamId], dispatcher_, (*meshSignalPtr_)[streamId], profilerInput_.stage));
401 0 : CHK_RET(LocalNotify::Wait(
402 : subStreams_[lRMainStreamId_], dispatcher_, (*meshSignalPtr_)[streamId], profilerInput_.stage));
403 : }
404 :
405 0 : CHK_RET(AlgTemplateBase::ExecEmptyTask(inputMem_, outputMem_, subStreams_[lRMainStreamId_], dispatcher_));
406 : }
407 :
408 0 : return HCCL_SUCCESS;
409 : }
410 : REGISTER_TEMPLATE(TemplateType::TEMPLATE_REDUCESCATTER_PLANT_LOCAL_REDUCE, ReduceScatterPlantLocalReduce);
411 : } // namespace hccl
|
