---
id: pr-vllm-23727
repo: vllm-project/vllm
pr: 23727
title: '[Bugfix][Misc] Fix silu_and_mul_nvfp4_quant issue and extract common utils for nvfp4 kernel source files'
author: elvischenv
date: '2025-09-04'
url: https://github.com/vllm-project/vllm/pull/23727
source_category: upstream-code
architectures:
- sm100
tags:
- fp4
- kernel-fusion
- moe
- nvfp4
- pipeline-stages
- quantization
techniques:
- kernel-fusion
- pipeline-stages
hardware_features:
- fp4
- nvfp4
kernel_types:
- moe
- quantization
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: adc3ddb4309d4843a5425eed702bb3e1d942fc2d
inclusion_reason: kernel file changes
changed_paths:
- .buildkite/test-pipeline.yaml
- csrc/dispatch_utils.h
- csrc/ops.h
- csrc/quantization/fp4/activation_nvfp4_quant_fusion_kernels.cu
- csrc/quantization/fp4/nvfp4_blockwise_moe_kernel.cu
- csrc/quantization/fp4/nvfp4_experts_quant.cu
- csrc/quantization/fp4/nvfp4_quant_entry.cu
- csrc/quantization/fp4/nvfp4_quant_kernels.cu
- csrc/quantization/fp4/nvfp4_utils.cuh
- csrc/torch_bindings.cpp
- tests/kernels/quantization/test_silu_nvfp4_quant_fusion.py
head_ref_oid: c80de931900f5b90f48597fc27b63fddc32b8fe3
artifact_dir: evidence/pull-bundles/vllm/gh-23727
---
# [Bugfix][Misc] Fix silu_and_mul_nvfp4_quant issue and extract common utils for nvfp4 kernel source files

- Repository: `vllm-project/vllm`
- PR: [23727](https://github.com/vllm-project/vllm/pull/23727)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `.buildkite/test-pipeline.yaml`
- `csrc/dispatch_utils.h`
- `csrc/ops.h`
- `csrc/quantization/fp4/activation_nvfp4_quant_fusion_kernels.cu`
- `csrc/quantization/fp4/nvfp4_blockwise_moe_kernel.cu`
- `csrc/quantization/fp4/nvfp4_experts_quant.cu`
- `csrc/quantization/fp4/nvfp4_quant_entry.cu`
- `csrc/quantization/fp4/nvfp4_quant_kernels.cu`
- `csrc/quantization/fp4/nvfp4_utils.cuh`
- `csrc/torch_bindings.cpp`
- `tests/kernels/quantization/test_silu_nvfp4_quant_fusion.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-23727`
