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ge_context.cc 3.3 kB

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  1. /**
  2. * Copyright 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_context.h"
  17. #include "./ge_global_options.h"
  18. #include "./ge_local_context.h"
  19. #include "framework/common/ge_types.h"
  20. #include "framework/common/debug/ge_log.h"
  21. namespace ge {
  22. namespace {
  23. const int64_t kMinTrainingTraceJobId = 65536;
  24. const int kDecimal = 10;
  25. const char *kHostExecPlacement = "HOST";
  26. }
  27. GEContext &GetContext() {
  28. static GEContext ge_context{};
  29. return ge_context;
  30. }
  31. thread_local uint64_t GEContext::session_id_;
  32. graphStatus GEContext::GetOption(const std::string &key, std::string &option) {
  33. return GetThreadLocalContext().GetOption(key, option);
  34. }
  35. bool GEContext::GetHostExecFlag() {
  36. std::string exec_placement;
  37. if (GetThreadLocalContext().GetOption(GE_OPTION_EXEC_PLACEMENT, exec_placement) != GRAPH_SUCCESS) {
  38. GELOGW("get option OPTION_EXEC_PLACEMENT failed.");
  39. return false;
  40. }
  41. GELOGD("Option ge.exec.placement is %s.", exec_placement.c_str());
  42. return exec_placement == kHostExecPlacement;
  43. }
  44. std::map<std::string, std::string> &GetMutableGlobalOptions() {
  45. static std::map<std::string, std::string> global_options{};
  46. return global_options;
  47. }
  48. void GEContext::Init() {
  49. string session_id;
  50. (void)GetOption("ge.exec.sessionId", session_id);
  51. try{
  52. session_id_ = static_cast<uint64_t>(std::stoi(session_id.c_str()));
  53. } catch (std::invalid_argument &) {
  54. GELOGW("%s transform to int failed.", session_id.c_str());
  55. } catch (std::out_of_range &) {
  56. GELOGW("%s transform to int failed.", session_id.c_str());
  57. }
  58. string device_id;
  59. (void)GetOption("ge.exec.deviceId", device_id);
  60. try{
  61. device_id_ = static_cast<uint32_t>(std::stoi(device_id.c_str()));
  62. } catch (std::invalid_argument &) {
  63. GELOGW("%s transform to int failed.", device_id.c_str());
  64. } catch (std::out_of_range &) {
  65. GELOGW("%s transform to int failed.", device_id.c_str());
  66. }
  67. string job_id;
  68. (void)GetOption("ge.exec.jobId", job_id);
  69. std::string s_job_id = "";
  70. for (auto c : job_id) {
  71. if (c >= '0' && c <= '9') {
  72. s_job_id += c;
  73. }
  74. }
  75. if (s_job_id == "") {
  76. trace_id_ = kMinTrainingTraceJobId;
  77. return;
  78. }
  79. int64_t d_job_id = std::strtoll(s_job_id.c_str(), nullptr, kDecimal);
  80. if (d_job_id < kMinTrainingTraceJobId) {
  81. trace_id_ = d_job_id + kMinTrainingTraceJobId;
  82. } else {
  83. trace_id_ = d_job_id;
  84. }
  85. }
  86. uint64_t GEContext::SessionId() { return session_id_; }
  87. uint32_t GEContext::DeviceId() { return device_id_; }
  88. uint64_t GEContext::TraceId() { return trace_id_; }
  89. void GEContext::SetSessionId(uint64_t session_id) { session_id_ = session_id; }
  90. void GEContext::SetCtxDeviceId(uint32_t device_id) { device_id_ = device_id; }
  91. } // 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