---
id: pr-flashinfer-2380
repo: flashinfer-ai/flashinfer
pr: 2380
title: 'fix: ensure each CTA processes full numHeadsQPerKv for trtllm decode kernel'
author: dongjiyingdjy
date: '2026-01-21'
url: https://github.com/flashinfer-ai/flashinfer/pull/2380
source_category: upstream-code
architectures:
- sm100
tags:
- decode
- flash-attention
techniques: []
hardware_features: []
kernel_types:
- decode
- flash-attention
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: 6e93b6794d119af15d1e83209740a7ccc044e3c6
inclusion_reason: kernel file changes
changed_paths:
- include/flashinfer/trtllm/fmha/fmhaKernels.cuh
head_ref_oid: 728252e0972dae6a5192a30f169bce080458fc4f
artifact_dir: evidence/pull-bundles/flashinfer/gh-2380
---
# fix: ensure each CTA processes full numHeadsQPerKv for trtllm decode kernel

- Repository: `flashinfer-ai/flashinfer`
- PR: [2380](https://github.com/flashinfer-ai/flashinfer/pull/2380)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `include/flashinfer/trtllm/fmha/fmhaKernels.cuh`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-2380`
