---
id: pr-flashinfer-2988
repo: flashinfer-ai/flashinfer
pr: 2988
title: '[Fmha] support nvfp4 output keepsMmaAb generation kernels'
author: PerkzZheng
date: '2026-04-08'
url: https://github.com/flashinfer-ai/flashinfer/pull/2988
source_category: upstream-code
architectures:
- sm100
tags:
- attention
- flash-attention
- fp4
- nvfp4
techniques: []
hardware_features:
- fp4
- nvfp4
kernel_types:
- attention
- flash-attention
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: de5a556e2956a21169b0dd4f5cadf7b770f85561
inclusion_reason: kernel file changes
changed_paths:
- include/flashinfer/trtllm/fmha/fmhaKernels.cuh
- tests/attention/test_trtllm_gen_attention.py
head_ref_oid: e82d9ad3880f7843d41a74ca6af39889f51e86fe
artifact_dir: evidence/pull-bundles/flashinfer/gh-2988
---
# [Fmha] support nvfp4 output keepsMmaAb generation kernels

- Repository: `flashinfer-ai/flashinfer`
- PR: [2988](https://github.com/flashinfer-ai/flashinfer/pull/2988)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `include/flashinfer/trtllm/fmha/fmhaKernels.cuh`
- `tests/attention/test_trtllm_gen_attention.py`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-2988`
