---
id: pr-vllm-21309
repo: vllm-project/vllm
pr: 21309
title: Support CUTLASS NVFP4 (w4a4) for Blackwell Geforce GPUs (SM120)
author: LopezCastroRoberto
date: '2025-08-03'
url: https://github.com/vllm-project/vllm/pull/21309
source_category: upstream-code
architectures:
- sm100
tags:
- fp4
- moe
- nvfp4
- quantization
techniques: []
hardware_features:
- fp4
- nvfp4
kernel_types:
- moe
- quantization
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: 789562c28c143201a1d2ca35f7adcdf54ef832e5
inclusion_reason: kernel file changes
changed_paths:
- CMakeLists.txt
- csrc/quantization/fp4/nvfp4_blockwise_moe_kernel.cu
- csrc/quantization/fp4/nvfp4_quant_entry.cu
- csrc/quantization/fp4/nvfp4_quant_kernels.cu
- csrc/quantization/fp4/nvfp4_scaled_mm_entry.cu
- csrc/quantization/fp4/nvfp4_scaled_mm_sm120_kernels.cu
head_ref_oid: 8b1c40faea35e4b032969b18e226bf095d6eac41
artifact_dir: evidence/pull-bundles/vllm/gh-21309
---
# Support CUTLASS NVFP4 (w4a4) for Blackwell Geforce GPUs (SM120)

- Repository: `vllm-project/vllm`
- PR: [21309](https://github.com/vllm-project/vllm/pull/21309)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `CMakeLists.txt`
- `csrc/quantization/fp4/nvfp4_blockwise_moe_kernel.cu`
- `csrc/quantization/fp4/nvfp4_quant_entry.cu`
- `csrc/quantization/fp4/nvfp4_quant_kernels.cu`
- `csrc/quantization/fp4/nvfp4_scaled_mm_entry.cu`
- `csrc/quantization/fp4/nvfp4_scaled_mm_sm120_kernels.cu`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-21309`
