pytorch / pytorch/TensorRT

✨[Feature] Supporting Attention masks when used in VLAs

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@peri044 is already working on this.

Since Oct 29, 2025.

feature request story: LLM & Generative AI
Dominant language
Python
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Description

Is your feature request related to a problem? Please describe.

When supporting the GROOT N1 model, we were not able to handle attn mask and had to use the position ids.

Describe the solution you'd like

Allow users to use attention masks in their models

Describe alternatives you've considered

Additional context

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