How to implement BN layers in TensorRT?

Ubuntu 16.04 LTS
GPU type:1050Ti
nvidia driver version:390.87
CUDA version:9.0
CUDNN version:7.13
Python version:3.5
TensorRT version:

I have to create my network from scratch using the python API.It seems like that IScaleLayer could be used to achieve this goal.Any sample code or tutorial?



Any detail or sample code?
I mean using TensorRT API from scartch to creat network,like the sample ‘network_api_pytorch_mnist’.
I don’t import from tensorflow with using uff.My model is pytorch one and couldn’t be convert to onnx format.