I am trying to export Arcface model to ONNX.
The model is located in this public S3 bucket
https://s3.amazonaws.com/onnx-model-zoo/arcface/resnet100/resnet100-0000.params
https://s3.amazonaws.com/onnx-model-zoo/arcface/resnet100/resnet100-symbol.json
When we export to ONNX we get float64 dtype for minscalar layer whereas the ONNX specification doesn't support float64.

Minimum reproducible example

from mxnet.contrib import onnx as onnx_mxnet
model = onnx_mxnet.export_model('resnet100-symbol.json', 'resnet100-0000.params', [(1,3,112,112)], onnx_file_path='resnet100.onnx')
and then visualise the model using netron
More details can be found here onnx/models#91

Steps to reproduce

Please use the above snippet to reproduce.

What have you tried to solve it?

1. Seems like a bug in the conversion from MXNet to ONNX for particular layer.