---
id: pr-vllm-23696
repo: vllm-project/vllm
pr: 23696
title: '[Kernel][B200] `mxfp4` fused cutlass moe'
author: djmmoss
date: '2025-09-11'
url: https://github.com/vllm-project/vllm/pull/23696
source_category: upstream-code
architectures:
- sm90
- sm100
tags:
- tcgen05
- nvfp4
- moe
- fused-kernel
techniques:
- kernel-fusion
- fine-grained-quantization
hardware_features:
- nvfp4
- fp4
- fp8
- block-scale
- tma
- tcgen05
kernel_types:
- moe
- grouped-gemm
- fused-kernel
languages:
- cuda-cpp
- python
captured_at: 2026-04-16
status: merged
merge_sha: 074854b24f6e0b1e237a004283e1f46d98c0d73c
inclusion_reason: manually curated, Blackwell kernel relevance
changed_paths:
- tests/kernels/moe/test_mxfp4_moe.py
- vllm/envs.py
- vllm/model_executor/layers/fused_moe/layer.py
- vllm/model_executor/layers/quantization/mxfp4.py
- vllm/model_executor/warmup/kernel_warmup.py
artifact_dir: evidence/pull-bundles/vllm/gh-23696
head_ref_oid: 808ebddb796fbed34d9edbe1bf4767c0e91963bf
---
# [Kernel][B200] `mxfp4` fused cutlass moe

- Repository: `vllm-project/vllm`
- PR: [23696](https://github.com/vllm-project/vllm/pull/23696)
- Decision: `manually curated, Blackwell kernel relevance`
- Reason: manually curated, Blackwell kernel relevance

## Changed Paths

- `tests/kernels/moe/test_mxfp4_moe.py`
- `vllm/envs.py`
- `vllm/model_executor/layers/fused_moe/layer.py`
- `vllm/model_executor/layers/quantization/mxfp4.py`
- `vllm/model_executor/warmup/kernel_warmup.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-23696`
