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Error ONNX Export failed, Hardtanh not supported

See original GitHub issue

I tried to export a PyTorch model to ONNX and got this warning and error :

UserWarning: ONNX export failed on ATen operator hardtanh because torch.onnx.symbolic.hardtanh does not exist RuntimeError: ONNX export failed: Couldn't export operator aten::hardtanh

So after some researches, I understood that PyTorch can’t export the operator Hardtanh. I tried to follow the tutorial to add export support but it seems like Hardtanh is not a standardized operator in ONNX. For this case, the tutorial says I have to add it to ONNX. How can I do that ? Is it possible to achieve this or should I wait for this operator to be supported or find another way to convert my model ?

Issue Analytics

State:
Created 5 years ago
Comments:10 (7 by maintainers)

Top GitHub Comments

3reactions

houseroadcommented, May 17, 2018

You can propose to introduce HardTanh to ONNX, I think it’s common enough to be introduced.

1reaction

Ac2zoomcommented, Jul 5, 2018

https://github.com/pytorch/pytorch/pull/8804. However, Hardtanh can also be equivalently expressed by Clip.

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