---
id: pr-vllm-25609
repo: vllm-project/vllm
pr: 25609
title: Enable Fbgemm NVFP4 on Dense models
author: samanamp
date: '2025-09-25'
url: https://github.com/vllm-project/vllm/pull/25609
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: 90b139cfffd52ee2563260a89409fee60f7329f2
inclusion_reason: kernel file changes
changed_paths:
- benchmarks/kernels/bench_nvfp4_gemm.py
- vllm/envs.py
- vllm/model_executor/layers/quantization/compressed_tensors/schemes/compressed_tensors_w4a4_nvfp4.py
head_ref_oid: 5ee90a40cb0b3cababe4127a91c5e3e0816af4f5
artifact_dir: evidence/pull-bundles/vllm/gh-25609
---
# Enable Fbgemm NVFP4 on Dense models

- Repository: `vllm-project/vllm`
- PR: [25609](https://github.com/vllm-project/vllm/pull/25609)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `benchmarks/kernels/bench_nvfp4_gemm.py`
- `vllm/envs.py`
- `vllm/model_executor/layers/quantization/compressed_tensors/schemes/compressed_tensors_w4a4_nvfp4.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-25609`
