---
id: pr-sglang-4831
repo: sgl-project/sglang
pr: 4831
title: '[Feature] Support FA3 backend for MLA'
author: Fridge003
date: '2025-03-29'
url: https://github.com/sgl-project/sglang/pull/4831
source_category: upstream-code
architectures:
- sm100
tags: []
techniques: []
hardware_features: []
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: 20c90be23de7575f1d6a603b2cb6763f1ec903b8
inclusion_reason: defer
changed_paths:
- python/sglang/srt/layers/attention/flashattention_backend.py
- python/sglang/srt/model_executor/model_runner.py
- python/sglang/srt/models/deepseek_v2.py
artifact_dir: evidence/pull-bundles/sglang/gh-4831
head_ref_oid: 3564c695c8cffa2d068550b442c3e392cd6b0d98
---
# [Feature] Support FA3 backend for MLA

- Repository: `sgl-project/sglang`
- PR: [4831](https://github.com/sgl-project/sglang/pull/4831)
- Decision: `defer`
- Reason: defer

## Changed Paths

- `python/sglang/srt/layers/attention/flashattention_backend.py`
- `python/sglang/srt/model_executor/model_runner.py`
- `python/sglang/srt/models/deepseek_v2.py`

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-4831`
