---
id: pr-flashinfer-1371
repo: flashinfer-ai/flashinfer
pr: 1371
title: 'bugfix: fixed cutlass fused moe usage of FP4QuantizationSFLayout::SWIZZLED'
author: yzh119
date: '2025-08-03'
url: https://github.com/flashinfer-ai/flashinfer/pull/1371
source_category: upstream-code
architectures:
- sm100
tags:
- fp4
- kernel-fusion
- moe
- quantization
- swizzling
techniques:
- kernel-fusion
- swizzling
hardware_features:
- fp4
kernel_types:
- moe
- quantization
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: 22a62eac289570858cc0772ae3beef771f78be64
inclusion_reason: kernel file changes
changed_paths:
- csrc/fused_moe/cutlass_backend/cutlass_fused_moe_kernels.cuh
head_ref_oid: 0c4f1aaf9e1d91744f0bab61010403714409d897
artifact_dir: evidence/pull-bundles/flashinfer/gh-1371
---
# bugfix: fixed cutlass fused moe usage of FP4QuantizationSFLayout::SWIZZLED

- Repository: `flashinfer-ai/flashinfer`
- PR: [1371](https://github.com/flashinfer-ai/flashinfer/pull/1371)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `csrc/fused_moe/cutlass_backend/cutlass_fused_moe_kernels.cuh`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-1371`
