Created by: Superjomn

Some primary ideas, the interface of the TensorRTEngineOp

• Op
  • inputs
  • outputs
  • attributes
    • input_sources: "fc:Out mul:Y"
    • output_sources: "mul:X"
    • desc: serialized BlockDesc.
    • max_batch_size (for TensorRT)
    • max_workspace (for TensorRT)

the input_sources indicates where the inputs are from, the output_sources indicate the operators this output belongs to. So that the convert_io logic inside the TensorRTEngineOp knows how to convert the Tensor between Fluid and TensorRT space.