https://github.com/lix19937/trt-samples-for-hackathon-cn/blob/master/cookbook/04-BuildEngineByONNXParser/pyTorch-ONNX-TensorRT/calibrator.py NVIDIA/TensorRT#3858 NVIDIA/TensorRT#3708 NVIDIA/TensorRT#2757 NVIDIA/TensorRT#2561 https://docs.nvidia.com/deeplearning/tensorrt/developer-guide/index.html#opt_profiles