---
id: pr-flashinfer-997
repo: flashinfer-ai/flashinfer
pr: 997
title: '3rdparty: upgrade cutlass to 3.9'
author: yzh119
date: '2025-04-03'
url: https://github.com/flashinfer-ai/flashinfer/pull/997
source_category: upstream-code
architectures:
- sm100
- sm90
tags:
- attention
- mla
techniques: []
hardware_features: []
kernel_types:
- attention
- mla
languages:
- cuda-cpp
captured_at: '2026-04-17'
status: merged
merge_sha: 25d67b52e030ca522bbc4a8bccf18f078910587a
inclusion_reason: kernel file changes
changed_paths:
- 3rdparty/cutlass
- include/flashinfer/attention/hopper/block_sparse_gather.cuh
- include/flashinfer/attention/mla_hopper.cuh
head_ref_oid: 7153c0731360a532cf16556a1c67c1a23725d27c
artifact_dir: evidence/pull-bundles/flashinfer/gh-997
---
# 3rdparty: upgrade cutlass to 3.9

- Repository: `flashinfer-ai/flashinfer`
- PR: [997](https://github.com/flashinfer-ai/flashinfer/pull/997)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `3rdparty/cutlass`
- `include/flashinfer/attention/hopper/block_sparse_gather.cuh`
- `include/flashinfer/attention/mla_hopper.cuh`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-997`
