masahi edited a comment on issue #4497: [Relay] Add a PyTorch to Relay Parser URL: https://github.com/apache/incubator-tvm/pull/4497#issuecomment-583977652 @alexwong It seems you have problems with alexnet, vgg and mobilenet v2 on cuda. In my refactored version, I have no problem with these three. Have a look and try my script below. You can parse the module in two ways and compare the difference. https://github.com/masahi/torchscript-to-tvm/blob/master/torchvision_test.py#L51-L60 I guess the issue is in dtype or optional arguments handling in your op conversions. I've prepared [a branch](https://github.com/masahi/tvm/tree/torch-refactor) for the refactoring PR based on your current implementation, and I can reproduce errors on alexnet, vgg and mobilenet v2. The difference between this branch and the implementation at `torchscript-to-tvm` is mostly on op conversion map, that's why I think problems are there.
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