pytorch / pytorch/executorch

support custom triton sdpa kernel in CUDA backend

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#15,744 2 comments 0 reactions 1 assignee View on GitHub

@Gasoonjia is already working on this.

Since Nov 13, 2025.

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Description

🚀 The feature, motivation and pitch

Currnently one of the main gap for cuda backend is we don't support sdpa kernel in one step, but need to decompose it which introduces extra perf latency.
We should have a single triton sdpa kernel for CUDA backend.

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