# Model failed ONNX checker validation

**URL:** <https://community.memryx.com/t/model-failed-onnx-checker-validation/221>\
**Category:** General\
**Tags:** sdk\
**Created:** [June 15, 2026, 9:25am UTC](https://community.memryx.com/t/model-failed-onnx-checker-validation/221 "2026-06-15T09:25:29Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![yan12125](https://avatars.discourse-cdn.com/v4/letter/y/e19b73/32.png) [@yan12125](https://community.memryx.com/u/yan12125)\
**Post date:** [June 15, 2026, 9:25am UTC](https://community.memryx.com/t/model-failed-onnx-checker-validation/221/1 "2026-06-15T09:25:29Z")

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I’m trying a Transformers model ([Tacoin/openpi-pi0.5-libero-onnx at main](https://huggingface.co/Tacoin/openpi-pi0.5-libero-onnx/tree/main/fp16)). `mx_nc` reports `Model failed ONNX checker validation`, while `onnx.checker.check_model('/path/to/model.onnx')` does not result in an error. How to fix the issue?

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**Author:** ![abinila\_siva](https://avatars.discourse-cdn.com/v4/letter/a/c67d28/32.png) [@abinila\_siva](https://community.memryx.com/u/abinila_siva)\
**Post date:** [June 15, 2026, 4:56pm UTC](https://community.memryx.com/t/model-failed-onnx-checker-validation/221/2 "2026-06-15T16:56:10Z")

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Hi, Thanks for sharing the model details. I looked into it, and this is a very large Transformer-based model, around 6.4 GB. Due to its size, it is not currently supported on the MX3 generation of chips. Sorry about that. Please let us know if you have any other questions. Thanks.

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**Author:** ![yan12125](https://avatars.discourse-cdn.com/v4/letter/y/e19b73/32.png) [@yan12125](https://community.memryx.com/u/yan12125)\
**Post date:** [June 16, 2026, 2:52am UTC](https://community.memryx.com/t/model-failed-onnx-checker-validation/221/3 "2026-06-16T02:52:33Z")

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Oops thanks, I didn’t notice the size limit.