---
id: pr-flashinfer-1241
repo: flashinfer-ai/flashinfer
pr: 1241
title: 'feat: Support MXFP8 x MXFP4 CUTLASS grouped GEMM'
author: jinyangyuan-nvidia
date: '2025-07-13'
url: https://github.com/flashinfer-ai/flashinfer/pull/1241
source_category: upstream-code
architectures:
- sm100
tags:
- fp4
- fp8
- gemm
- grouped-gemm
techniques: []
hardware_features:
- fp4
- fp8
kernel_types:
- gemm
- grouped-gemm
languages:
- cuda-cpp
captured_at: '2026-04-17'
status: merged
merge_sha: ff0270cefa18c14e25726c35bf272ebc8c130e9c
inclusion_reason: kernel file changes
changed_paths:
- benchmarks/bench_groupwise_grouped_gemm_fp8_blackwell.py
- benchmarks/bench_groupwise_grouped_gemm_mxfp4_blackwell.py
- csrc/group_gemm_fp8_groupwise_sm100.cu
- csrc/group_gemm_mxfp4_groupwise_sm100.cu
- csrc/group_gemm_sm100_pybind.cu
- csrc/pytorch_extension_utils.h
- flashinfer/gemm.py
- flashinfer/jit/core.py
- include/flashinfer/cutlass_utils.cuh
- include/flashinfer/gemm/group_gemm_fp8_groupwise_sm100.cuh
- include/flashinfer/gemm/group_gemm_mxfp4_groupwise_sm100.cuh
- tests/test_groupwise_scaled_gemm_mxfp4.py
head_ref_oid: 353021ef418e2450bcaeb8039bd7b81afa70dc9f
artifact_dir: evidence/pull-bundles/flashinfer/gh-1241
---
# feat: Support MXFP8 x MXFP4 CUTLASS grouped GEMM

- Repository: `flashinfer-ai/flashinfer`
- PR: [1241](https://github.com/flashinfer-ai/flashinfer/pull/1241)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `benchmarks/bench_groupwise_grouped_gemm_fp8_blackwell.py`
- `benchmarks/bench_groupwise_grouped_gemm_mxfp4_blackwell.py`
- `csrc/group_gemm_fp8_groupwise_sm100.cu`
- `csrc/group_gemm_mxfp4_groupwise_sm100.cu`
- `csrc/group_gemm_sm100_pybind.cu`
- `csrc/pytorch_extension_utils.h`
- `flashinfer/gemm.py`
- `flashinfer/jit/core.py`
- `include/flashinfer/cutlass_utils.cuh`
- `include/flashinfer/gemm/group_gemm_fp8_groupwise_sm100.cuh`
- `include/flashinfer/gemm/group_gemm_mxfp4_groupwise_sm100.cuh`
- `tests/test_groupwise_scaled_gemm_mxfp4.py`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-1241`
