---
id: pr-vllm-21716
repo: vllm-project/vllm
pr: 21716
title: '[NVIDIA] Support Flashinfer TRTLLM FP8-q/kv/out Attention Kernel'
author: elvischenv
date: '2025-08-19'
url: https://github.com/vllm-project/vllm/pull/21716
source_category: upstream-code
architectures:
- sm100
tags:
- attention
- decode
- fp8
- kernel-fusion
- pipeline-stages
- prefill
techniques:
- kernel-fusion
- pipeline-stages
hardware_features:
- fp8
kernel_types:
- attention
- decode
- prefill
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: 03752dba8f1c4cd8eda99949b7d7ae90a47425d5
inclusion_reason: kernel file changes
changed_paths:
- .buildkite/test-pipeline.yaml
- benchmarks/kernels/benchmark_trtllm_decode_attention.py
- benchmarks/kernels/benchmark_trtllm_prefill_attention.py
- tests/compile/test_fusion_attn.py
- tests/kernels/attention/test_flashinfer_trtllm_attention.py
- vllm/attention/layer.py
- vllm/compilation/fusion_attn.py
- vllm/utils/flashinfer.py
- vllm/v1/attention/backends/flashinfer.py
head_ref_oid: 3178bd0b325ec87ce63382468ab0d55b799b62fd
artifact_dir: evidence/pull-bundles/vllm/gh-21716
---
# [NVIDIA] Support Flashinfer TRTLLM FP8-q/kv/out Attention Kernel

- Repository: `vllm-project/vllm`
- PR: [21716](https://github.com/vllm-project/vllm/pull/21716)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `.buildkite/test-pipeline.yaml`
- `benchmarks/kernels/benchmark_trtllm_decode_attention.py`
- `benchmarks/kernels/benchmark_trtllm_prefill_attention.py`
- `tests/compile/test_fusion_attn.py`
- `tests/kernels/attention/test_flashinfer_trtllm_attention.py`
- `vllm/attention/layer.py`
- `vllm/compilation/fusion_attn.py`
- `vllm/utils/flashinfer.py`
- `vllm/v1/attention/backends/flashinfer.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-21716`
