---
id: pr-flashinfer-3032
repo: flashinfer-ai/flashinfer
pr: 3032
title: 'fused_moe: pre-filter SM89 tactics with zero occupancy on SM120 Blackwell (fix review feedback on #2764)'
author: aniskumar-nv
date: '2026-04-14'
url: https://github.com/flashinfer-ai/flashinfer/pull/3032
source_category: upstream-code
architectures:
- sm100
- sm90
tags:
- gemm
- kernel-fusion
- moe
techniques:
- kernel-fusion
hardware_features: []
kernel_types:
- gemm
- moe
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: bf9b1dac855005ffaa57b48ae54cba30642bf213
inclusion_reason: kernel file changes
changed_paths:
- csrc/fused_moe/cutlass_backend/flashinfer_cutlass_fused_moe_binding.cu
- csrc/nv_internal/tensorrt_llm/kernels/cutlass_kernels/include/moe_gemm_kernels.h
- csrc/nv_internal/tensorrt_llm/kernels/cutlass_kernels/include/moe_kernels.h
- csrc/nv_internal/tensorrt_llm/kernels/cutlass_kernels/moe_gemm/moe_gemm_template_dispatch.h
- flashinfer/fused_moe/core.py
head_ref_oid: 8d015bb9f64a1156aefee4b928083dd5ea1770b9
artifact_dir: evidence/pull-bundles/flashinfer/gh-3032
---
# fused_moe: pre-filter SM89 tactics with zero occupancy on SM120 Blackwell (fix review feedback on #2764)

- Repository: `flashinfer-ai/flashinfer`
- PR: [3032](https://github.com/flashinfer-ai/flashinfer/pull/3032)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `csrc/fused_moe/cutlass_backend/flashinfer_cutlass_fused_moe_binding.cu`
- `csrc/nv_internal/tensorrt_llm/kernels/cutlass_kernels/include/moe_gemm_kernels.h`
- `csrc/nv_internal/tensorrt_llm/kernels/cutlass_kernels/include/moe_kernels.h`
- `csrc/nv_internal/tensorrt_llm/kernels/cutlass_kernels/moe_gemm/moe_gemm_template_dispatch.h`
- `flashinfer/fused_moe/core.py`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-3032`
