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inference_context.h 2.6 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_INFERENCE_CONTEXT_H_
  17. #define INC_EXTERNAL_GRAPH_INFERENCE_CONTEXT_H_
  18. #include <memory>
  19. #include <string>
  20. #include <vector>
  21. #include "./tensor.h"
  22. #include "./types.h"
  23. namespace ge {
  24. class InferenceContext;
  25. using InferenceContextPtr = std::shared_ptr<InferenceContext>;
  26. class ShapeAndTypeImpl;
  27. class GE_FUNC_DEV_VISIBILITY GE_FUNC_HOST_VISIBILITY ShapeAndType {
  28. public:
  29. ShapeAndType();
  30. ~ShapeAndType() = default;
  31. ShapeAndType(const Shape &shape, DataType dataType);
  32. void SetShape(const Shape &shape);
  33. void SetType(DataType dataType);
  34. Shape GetShape() const;
  35. DataType GetDataType() const;
  36. private:
  37. std::shared_ptr<ShapeAndTypeImpl> shape_and_type_impl_;
  38. };
  39. class InferenceContextImpl;
  40. class GE_FUNC_DEV_VISIBILITY GE_FUNC_HOST_VISIBILITY InferenceContext {
  41. public:
  42. ~InferenceContext() = default;
  43. InferenceContext(const InferenceContext &context) = delete;
  44. InferenceContext(const InferenceContext &&context) = delete;
  45. InferenceContext &operator=(const InferenceContext &context) = delete;
  46. InferenceContext &operator=(const InferenceContext &&context) = delete;
  47. void SetInputHandleShapesAndTypes(std::vector<std::vector<ShapeAndType>> &&shapes_and_types);
  48. const std::vector<std::vector<ShapeAndType>> &GetInputHandleShapesAndTypes() const;
  49. const std::vector<std::vector<ShapeAndType>> &GetOutputHandleShapesAndTypes() const;
  50. void SetOutputHandleShapesAndTypes(const std::vector<std::vector<ShapeAndType>> &shapes_and_types);
  51. void SetOutputHandleShapesAndTypes(std::vector<std::vector<ShapeAndType>> &&shapes_and_types);
  52. void SetMarks(const std::vector<std::string> &marks);
  53. const std::vector<std::string> &GetMarks() const;
  54. static std::unique_ptr<InferenceContext> Create();
  55. private:
  56. explicit InferenceContext(std::unique_ptr<InferenceContextImpl> &impl);
  57. std::shared_ptr<InferenceContextImpl> inference_context_impl_;
  58. };
  59. } // namespace ge
  60. #endif // INC_EXTERNAL_GRAPH_INFERENCE_CONTEXT_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