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ge_context.cc 3.2 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_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 = 256;
  24. const int kDecimal = 10;
  25. const char *kHostExecPlacement = "HOST";
  26. } // namespace
  27. GEContext &GetContext() {
  28. static GEContext ge_context{};
  29. return ge_context;
  30. }
  31. graphStatus GEContext::GetOption(const std::string &key, std::string &option) {
  32. return GetThreadLocalContext().GetOption(key, option);
  33. }
  34. bool GEContext::GetHostExecFlag() {
  35. std::string exec_placement;
  36. if (GetThreadLocalContext().GetOption(GE_OPTION_EXEC_PLACEMENT, exec_placement) != GRAPH_SUCCESS) {
  37. GELOGW("get option OPTION_EXEC_PLACEMENT failed.");
  38. return false;
  39. }
  40. GELOGD("Option ge.exec.placement is %s.", exec_placement.c_str());
  41. return exec_placement == kHostExecPlacement;
  42. }
  43. std::map<std::string, std::string> &GetMutableGlobalOptions() {
  44. static std::map<std::string, std::string> global_options{};
  45. return global_options;
  46. }
  47. void GEContext::Init() {
  48. string session_id;
  49. (void)GetOption("ge.exec.sessionId", session_id);
  50. try {
  51. session_id_ = static_cast<uint64_t>(std::stoi(session_id.c_str()));
  52. } catch (std::invalid_argument &) {
  53. GELOGW("%s transform to int failed.", session_id.c_str());
  54. } catch (std::out_of_range &) {
  55. GELOGW("%s transform to int failed.", session_id.c_str());
  56. }
  57. string device_id;
  58. (void)GetOption("ge.exec.deviceId", device_id);
  59. try {
  60. device_id_ = static_cast<uint32_t>(std::stoi(device_id.c_str()));
  61. } catch (std::invalid_argument &) {
  62. GELOGW("%s transform to int failed.", device_id.c_str());
  63. } catch (std::out_of_range &) {
  64. GELOGW("%s transform to int failed.", device_id.c_str());
  65. }
  66. string job_id;
  67. (void)GetOption("ge.exec.jobId", job_id);
  68. std::string s_job_id = "";
  69. for (auto c : job_id) {
  70. if (c >= '0' && c <= '9') {
  71. s_job_id += c;
  72. }
  73. }
  74. if (s_job_id == "") {
  75. trace_id_ = kMinTrainingTraceJobId;
  76. return;
  77. }
  78. int64_t d_job_id = std::strtoll(s_job_id.c_str(), nullptr, kDecimal);
  79. if (d_job_id < kMinTrainingTraceJobId) {
  80. trace_id_ = d_job_id + kMinTrainingTraceJobId;
  81. } else {
  82. trace_id_ = d_job_id;
  83. }
  84. }
  85. uint64_t GEContext::SessionId() { return session_id_; }
  86. uint32_t GEContext::DeviceId() { return device_id_; }
  87. uint64_t GEContext::TraceId() { return trace_id_; }
  88. void GEContext::SetSessionId(uint64_t session_id) { session_id_ = session_id; }
  89. void GEContext::SetCtxDeviceId(uint32_t device_id) { device_id_ = device_id; }
  90. } // 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