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memory_assigner.cc 2.4 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 "memory/memory_assigner.h"
  17. #include <memory>
  18. #include "framework/common/debug/ge_log.h"
  19. #include "graph/build/memory/graph_mem_assigner.h"
  20. namespace ge {
  21. Status MemoryAssigner::AssignMemory(bool is_loop_graph, size_t &mem_offset, size_t &zero_copy_mem_size) {
  22. GraphMemoryAssigner graph_mem_assigner(compute_graph_);
  23. if (graph_mem_assigner.AssignMemory() != ge::SUCCESS) {
  24. GELOGE(ge::FAILED, "Memory assigner failed");
  25. return ge::FAILED;
  26. }
  27. // Reassign memory for special nodes
  28. if (graph_mem_assigner.ReAssignMemory(is_loop_graph, mem_offset) != ge::SUCCESS) {
  29. GELOGE(ge::FAILED, "Memory assigner failed");
  30. return ge::FAILED;
  31. }
  32. // Assign memory (block and offset) for zero copy nodes
  33. if (graph_mem_assigner.AssignZeroCopyMemory(mem_offset, zero_copy_mem_size) != ge::SUCCESS) {
  34. GELOGE(ge::FAILED, "Zero copy memory assigner failed");
  35. return ge::FAILED;
  36. }
  37. if (graph_mem_assigner.AssignMemory2HasRefAttrNode() != ge::SUCCESS) {
  38. GELOGE(ge::FAILED, "Assign reference memory failed!");
  39. return ge::FAILED;
  40. }
  41. // Assign memory for reference
  42. if (graph_mem_assigner.AssignReferenceMemory() != ge::SUCCESS) {
  43. GELOGE(ge::FAILED, "Assign reference memory failed!");
  44. return ge::FAILED;
  45. }
  46. // Must do variable attr assign after all the memory assigned
  47. if (graph_mem_assigner.AssignVarAttr2Nodes() != SUCCESS) {
  48. GELOGE(FAILED, "Variable Memory assigner failed");
  49. return FAILED;
  50. }
  51. if (graph_mem_assigner.SetInputOffset() != ge::SUCCESS) {
  52. GELOGE(ge::FAILED, "SetInputOffset Fail!");
  53. return ge::FAILED;
  54. }
  55. if (graph_mem_assigner.CheckOffset() != SUCCESS) {
  56. GELOGE(FAILED, "CheckOffset Fail!");
  57. return FAILED;
  58. }
  59. return SUCCESS;
  60. }
  61. } // 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