---
id: pr-flashinfer-2193
repo: flashinfer-ai/flashinfer
pr: 2193
title: 'feat: unit-test and api change, w4a8 grouped-gemm fused MoE for SM90'
author: jimmyzho
date: '2025-12-11'
url: https://github.com/flashinfer-ai/flashinfer/pull/2193
source_category: upstream-code
architectures:
- sm100
- sm90
tags:
- gemm
- grouped-gemm
- kernel-fusion
- moe
techniques:
- kernel-fusion
hardware_features: []
kernel_types:
- gemm
- grouped-gemm
- moe
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: fae79ab7579a99f52653a2deb5671763a9c76be8
inclusion_reason: kernel file changes
changed_paths:
- csrc/fused_moe/cutlass_backend/flashinfer_cutlass_fused_moe_binding.cu
- flashinfer/fused_moe/core.py
- tests/moe/test_trtllm_cutlass_fused_moe.py
head_ref_oid: 0a24eaed72b38877015e59d5d73e11cda11602e4
artifact_dir: evidence/pull-bundles/flashinfer/gh-2193
---
# feat: unit-test and api change, w4a8 grouped-gemm fused MoE for SM90

- Repository: `flashinfer-ai/flashinfer`
- PR: [2193](https://github.com/flashinfer-ai/flashinfer/pull/2193)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `csrc/fused_moe/cutlass_backend/flashinfer_cutlass_fused_moe_binding.cu`
- `flashinfer/fused_moe/core.py`
- `tests/moe/test_trtllm_cutlass_fused_moe.py`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-2193`
