---
id: pr-flashinfer-2404
repo: flashinfer-ai/flashinfer
pr: 2404
title: 'perf: mm_fp4 heuristic prioritizes CUTLASS over cuDNN on SM103'
author: bkryu
date: '2026-01-26'
url: https://github.com/flashinfer-ai/flashinfer/pull/2404
source_category: upstream-code
architectures:
- sm100
tags:
- fp4
- gemm
techniques: []
hardware_features:
- fp4
kernel_types:
- gemm
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: bd0b27b4cc68b2e5ba30178b4b3b781c5ed1ece6
inclusion_reason: kernel file changes
changed_paths:
- flashinfer/gemm/gemm_base.py
head_ref_oid: a125078731ad15961eab84148eb7eb38b17b3234
artifact_dir: evidence/pull-bundles/flashinfer/gh-2404
---
# perf: mm_fp4 heuristic prioritizes CUTLASS over cuDNN on SM103

- Repository: `flashinfer-ai/flashinfer`
- PR: [2404](https://github.com/flashinfer-ai/flashinfer/pull/2404)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `flashinfer/gemm/gemm_base.py`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-2404`
