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graph.h 2.3 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. #ifndef INC_EXTERNAL_GRAPH_GRAPH_H_
  17. #define INC_EXTERNAL_GRAPH_GRAPH_H_
  18. #include <memory>
  19. #include <string>
  20. #include <utility>
  21. #include <vector>
  22. #include "./operator.h"
  23. namespace ge {
  24. class GraphImpl;
  25. using GraphImplPtr = std::shared_ptr<GraphImpl>;
  26. class GE_FUNC_DEV_VISIBILITY GE_FUNC_HOST_VISIBILITY Graph {
  27. friend class GraphUtils;
  28. public:
  29. explicit Graph(const std::string &name);
  30. Graph() = default;
  31. ~Graph() = default;
  32. Graph &SetInputs(const std::vector<Operator> &inputs);
  33. Graph &SetOutputs(const std::vector<Operator> &outputs);
  34. Graph &SetOutputs(const std::vector<std::pair<Operator, std::vector<size_t>>> &output_indexs);
  35. Graph &SetOutputs(const std::vector<std::pair<ge::Operator, std::string>> &outputs);
  36. Graph &SetTargets(const std::vector<Operator> &targets);
  37. bool IsValid() const;
  38. graphStatus AddOp(const ge::Operator &op);
  39. graphStatus FindOpByName(const string &name, ge::Operator &op) const;
  40. graphStatus FindOpByType(const string &type, std::vector<ge::Operator> &ops) const;
  41. graphStatus GetAllOpName(std::vector<string> &op_name) const;
  42. graphStatus SaveToFile(const string &file_name) const;
  43. graphStatus LoadFromFile(const string &file_name);
  44. const std::string &GetName() const;
  45. ///
  46. /// Set is need train iteration.
  47. /// If set true, it means this graph need to be run iteration some
  48. /// times(according variant "npu_runconfig/iterations_per_loop").
  49. /// @param need_iteration need_iteration:whether to set iteration or not
  50. ///
  51. void SetNeedIteration(bool need_iteration);
  52. private:
  53. GraphImplPtr impl_{nullptr};
  54. };
  55. } // namespace ge
  56. #endif // INC_EXTERNAL_GRAPH_GRAPH_H_

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