Can't export model with Cast operator to NNEF?

[davidatsurge]

$ /Users/davidat/git/tract/target/debug/tract ../EfficientConformer/model.onnx dump --nnef optimized.nnef.tar.gz

gives me

[2022-04-26T17:43:31.508911000Z ERROR tract] No serializer found for node #89 "Cast_842" Cast

Is this a known limitation?

The reason I want to export to NNEF is because I would like to see if the .into_optimized() step can be done much quicker (it takes >1min right now) if I load the model from NNEF format instead of ONNX. Might be worth noting also that the step is much much quicker when I do a --release build.

[kali]

Try to add "--nnef-tract-core" (before dump) to enable tract nnef extensions. If that does not work, I'll need the model to have a look :)

[davidatsurge]

That seems to have taken care of it!

[kali]

We need an extension to nnef here as type semantics from nnef are sloppier than what they are in tract/onnx/tf...