---
id: pr-sglang-16382
repo: sgl-project/sglang
pr: 16382
title: '[Fix]Fix FA3 Performance in Diffusion Model '
author: HydraQYH
date: '2026-01-05'
url: https://github.com/sgl-project/sglang/pull/16382
source_category: upstream-code
architectures:
- sm100
- sm90
tags:
- attention
- kernel-fusion
techniques:
- kernel-fusion
hardware_features: []
kernel_types:
- attention
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: dcfb92ddbcd2f5a6fe919f0810e4aa82315e462e
inclusion_reason: kernel file changes
changed_paths:
- python/sglang/multimodal_gen/runtime/layers/attention/backends/flash_attn.py
head_ref_oid: 7b1df76a9a9fbbb56721c7c81cdb16cd584dca4b
artifact_dir: evidence/pull-bundles/sglang/gh-16382
---
# [Fix]Fix FA3 Performance in Diffusion Model 

- Repository: `sgl-project/sglang`
- PR: [16382](https://github.com/sgl-project/sglang/pull/16382)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `python/sglang/multimodal_gen/runtime/layers/attention/backends/flash_attn.py`

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-16382`
