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memcpy_async_task.cc 2.1 kB

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  1. /**
  2. * Copyright 2019-2020 Huawei Technologies Co., Ltd
  3. *
  4. * Licensed under the Apache License, Version 2.0 (the "License");
  5. * you may not use this file except in compliance with the License.
  6. * You may obtain a copy of the License at
  7. *
  8. * http://www.apache.org/licenses/LICENSE-2.0
  9. *
  10. * Unless required by applicable law or agreed to in writing, software
  11. * distributed under the License is distributed on an "AS IS" BASIS,
  12. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13. * See the License for the specific language governing permissions and
  14. * limitations under the License.
  15. */
  16. #include "ge_runtime/task/memcpy_async_task.h"
  17. #include "ge_runtime/task/task_factory.h"
  18. namespace ge {
  19. namespace model_runner {
  20. MemcpyAsyncTask::MemcpyAsyncTask(const ModelContext &model_context,
  21. const std::shared_ptr<MemcpyAsyncTaskInfo> &task_info)
  22. : TaskRepeater<MemcpyAsyncTaskInfo>(model_context, task_info), task_info_(task_info), stream_(nullptr) {
  23. if (task_info_ == nullptr) {
  24. GELOGW("task_info_ is null!");
  25. }
  26. auto stream_list = model_context.stream_list();
  27. uint32_t stream_id = task_info->stream_id();
  28. GELOGI("Stream list size:%zu, stream id:%u.", stream_list.size(), stream_id);
  29. if (stream_id >= stream_list.size()) {
  30. GELOGW("Stream id invalid");
  31. }
  32. stream_ = stream_list[stream_id];
  33. }
  34. MemcpyAsyncTask::~MemcpyAsyncTask() {}
  35. bool MemcpyAsyncTask::Distribute() {
  36. GELOGI("MemcpyAsyncTask Distribute start.");
  37. GELOGI("dst_max:%lu, count:%lu, kind:%u.", task_info_->dst_max(), task_info_->count(), task_info_->kind());
  38. rtError_t rt_ret = rtMemcpyAsync(task_info_->dst(), task_info_->dst_max(), task_info_->src(), task_info_->count(),
  39. static_cast<rtMemcpyKind_t>(task_info_->kind()), stream_);
  40. if (rt_ret != ACL_RT_SUCCESS) {
  41. GELOGE(RT_FAILED, "Call rt api failed, ret: 0x%X", rt_ret);
  42. return false;
  43. }
  44. GELOGI("DistributeTask end");
  45. return true;
  46. }
  47. REGISTER_TASK(TaskInfoType::MEMCPY_ASYNC, MemcpyAsyncTask, MemcpyAsyncTaskInfo);
  48. } // namespace model_runner
  49. } // namespace ge

图引擎模块(GE)是MindSpore的一个子模块,其代码由C++实现,位于前端模块ME和底层硬件之间,起到承接作用。图引擎模块以ME下发的图作为输入,然后进行一系列的深度图优化操作,最后输出一张可以在底层硬件上高效运行的图。GE针对昇腾AI处理器的硬件结构特点,做了特定的优化工作,以此来充分发挥出昇腾AI处理器的强大算力。在进行模型训练/推理时,GE会被自动调用而用户并不感知。GE主要由GE API和GE Core两部分组成,详细的架构图如下所示