Hi @lewtun,
Thanks again for the answers.

Are BertOptimizationOptions based on disabling embedding layer norm optimization for better model size reduction https://github.com/huggingface/transformers/blob/master/notebooks/04-onnx-export.ipynb 25, and mixed precision optimisation hardware-dependant?
Could you precise more what you mean by different hardware acceleration you’re using ?
So I can export my ONNX model with my GPU install of onnx, then use onnxrutime-cpu with the routine you submitted to obtain an quantized onnx model?

Thanks!