---
id: pr-sglang-17985
repo: sgl-project/sglang
pr: 17985
title: '[MUSA][9/N] Add FA3 attention backend support through MATE (MUSA AI Tensor Engine)'
author: froststeam
date: '2026-04-02'
url: https://github.com/sgl-project/sglang/pull/17985
source_category: upstream-code
architectures:
- sm100
tags: []
techniques: []
hardware_features: []
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: 939cf398a9ec23fb49160cd93c5b8cddc4f863ef
inclusion_reason: defer
changed_paths:
- python/pyproject_other.toml
- python/sglang/srt/configs/model_config.py
- python/sglang/srt/environ.py
- python/sglang/srt/hardware_backend/musa/__init__.py
- python/sglang/srt/hardware_backend/musa/attention/__init__.py
- python/sglang/srt/hardware_backend/musa/attention/flash_attention.py
- python/sglang/srt/layers/attention/attention_registry.py
- python/sglang/srt/layers/attention/flashattention_backend.py
- python/sglang/srt/server_args.py
artifact_dir: evidence/pull-bundles/sglang/gh-17985
head_ref_oid: 637b715ce928ae6d76d0fd90daa2ffa0e2747f3f
---
# [MUSA][9/N] Add FA3 attention backend support through MATE (MUSA AI Tensor Engine)

- Repository: `sgl-project/sglang`
- PR: [17985](https://github.com/sgl-project/sglang/pull/17985)
- Decision: `defer`
- Reason: defer

## Changed Paths

- `python/pyproject_other.toml`
- `python/sglang/srt/configs/model_config.py`
- `python/sglang/srt/environ.py`
- `python/sglang/srt/hardware_backend/musa/__init__.py`
- `python/sglang/srt/hardware_backend/musa/attention/__init__.py`
- `python/sglang/srt/hardware_backend/musa/attention/flash_attention.py`
- `python/sglang/srt/layers/attention/attention_registry.py`
- `python/sglang/srt/layers/attention/flashattention_backend.py`
- `python/sglang/srt/server_args.py`

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-17985`
