---
id: pr-flash-attention-2505
repo: Dao-AILab/flash-attention
pr: 2505
title: 'Fix: pass `stream` to SM100 MLA kernel'
author: MatthewBonanni
date: '2026-04-27'
url: https://github.com/Dao-AILab/flash-attention/pull/2505
source_category: upstream-code
architectures:
- sm100
tags:
- cuda kernel
- sm100
techniques: []
hardware_features:
- blackwell
kernel_types:
- attention
- mla
languages:
- cuda-cpp
captured_at: '2026-05-16'
status: merged
merge_sha: 519445aa2952715101d0fdbc23fadea04c91907e
inclusion_reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.
changed_paths:
- flash_attn/cute/flash_fwd_mla_sm100.py
artifact_dir: evidence/pull-bundles/flash-attention/gh-2505
head_ref_oid: 0c89f987b9137526e5ad156b89bc187ae83b625a
---
# Fix: pass `stream` to SM100 MLA kernel

- Repository: `Dao-AILab/flash-attention`
- PR: [2505](https://github.com/Dao-AILab/flash-attention/pull/2505)
- Decision: `Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.`
- Reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.

## Changed Paths

- `flash_attn/cute/flash_fwd_mla_sm100.py`

## Evidence Bundle

`evidence/pull-bundles/flash-attention/gh-2505`
