---
id: pr-vllm-26107
repo: vllm-project/vllm
pr: 26107
title: '[NVIDIA] Add support for cudnn fp4 gemm via flashinfer'
author: kaixih
date: '2025-10-15'
url: https://github.com/vllm-project/vllm/pull/26107
source_category: upstream-code
architectures:
- sm100
tags:
- fp4
- gemm
- nvfp4
- quantization
techniques: []
hardware_features:
- fp4
- nvfp4
kernel_types:
- gemm
- quantization
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: de92d916fe8a897b00a8adb0aab9ed9ec99f2b6c
inclusion_reason: kernel file changes
changed_paths:
- vllm/envs.py
- vllm/model_executor/layers/quantization/compressed_tensors/schemes/compressed_tensors_w4a4_nvfp4.py
- vllm/model_executor/layers/quantization/modelopt.py
head_ref_oid: cd2cf15d754a4fd2932e7cab95bc9ae0b25e40b3
artifact_dir: evidence/pull-bundles/vllm/gh-26107
---
# [NVIDIA] Add support for cudnn fp4 gemm via flashinfer

- Repository: `vllm-project/vllm`
- PR: [26107](https://github.com/vllm-project/vllm/pull/26107)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `vllm/envs.py`
- `vllm/model_executor/layers/quantization/compressed_tensors/schemes/compressed_tensors_w4a4_nvfp4.py`
- `vllm/model_executor/layers/quantization/modelopt.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-26107`
