---
id: pr-vllm-39825
repo: vllm-project/vllm
pr: 39825
title: '[Bugfix] Disable FlashInfer CUTLASS MoE on SM121 (DGX Spark)'
author: mgoin
date: '2026-04-14'
url: https://github.com/vllm-project/vllm/pull/39825
source_category: upstream-code
architectures:
- sm100
tags:
- kernel-fusion
- moe
techniques:
- kernel-fusion
hardware_features: []
kernel_types:
- moe
languages:
- python
captured_at: '2026-04-17'
status: merged
merge_sha: 65b9808960d7f25a018c525d2aca3dba7c411cfb
inclusion_reason: kernel file changes
changed_paths:
- vllm/model_executor/layers/fused_moe/flashinfer_cutlass_moe.py
head_ref_oid: f056b430e4f3bba70de71841706ec51c3f8d6170
artifact_dir: evidence/pull-bundles/vllm/gh-39825
---
# [Bugfix] Disable FlashInfer CUTLASS MoE on SM121 (DGX Spark)

- Repository: `vllm-project/vllm`
- PR: [39825](https://github.com/vllm-project/vllm/pull/39825)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `vllm/model_executor/layers/fused_moe/flashinfer_cutlass_moe.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-39825`
