---
id: pr-flashinfer-1927
repo: flashinfer-ai/flashinfer
pr: 1927
title: silu_and_mul nvfp4 quanization fusion rework
author: wenscarl
date: '2025-10-23'
url: https://github.com/flashinfer-ai/flashinfer/pull/1927
source_category: upstream-code
architectures:
- sm100
tags:
- fp4
- kernel-fusion
- nvfp4
- quantization
techniques:
- kernel-fusion
hardware_features:
- fp4
- nvfp4
kernel_types:
- quantization
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: 739df61f4d198212c963b7504237c41c01d63a32
inclusion_reason: kernel file changes
changed_paths:
- csrc/nv_internal/cpp/kernels/quantization.cu
- csrc/nv_internal/tensorrt_llm/kernels/quantization.cuh
- csrc/nv_internal/tensorrt_llm/kernels/quantization.h
- csrc/nv_internal/tensorrt_llm/thop/fp4Quantize.cpp
- csrc/nv_internal/tensorrt_llm/thop/fp4Quantize.h
- docs/api/activation.rst
- docs/api/fp4_quantization.rst
- flashinfer/__init__.py
- flashinfer/activation.py
- flashinfer/fp4_quantization.py
- tests/utils/test_fp4_quantize.py
head_ref_oid: 48259af173f1497f0beb2247ef4ca0ff379204b0
artifact_dir: evidence/pull-bundles/flashinfer/gh-1927
---
# silu_and_mul nvfp4 quanization fusion rework

- Repository: `flashinfer-ai/flashinfer`
- PR: [1927](https://github.com/flashinfer-ai/flashinfer/pull/1927)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `csrc/nv_internal/cpp/kernels/quantization.cu`
- `csrc/nv_internal/tensorrt_llm/kernels/quantization.cuh`
- `csrc/nv_internal/tensorrt_llm/kernels/quantization.h`
- `csrc/nv_internal/tensorrt_llm/thop/fp4Quantize.cpp`
- `csrc/nv_internal/tensorrt_llm/thop/fp4Quantize.h`
- `docs/api/activation.rst`
- `docs/api/fp4_quantization.rst`
- `flashinfer/__init__.py`
- `flashinfer/activation.py`
- `flashinfer/fp4_quantization.py`
- `tests/utils/test_fp4_quantize.py`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-1927`
