---
id: pr-flashinfer-2916
repo: flashinfer-ai/flashinfer
pr: 2916
title: 'fix: Fix autotuner crash on meta-device tensor in trtllm_fp4_block_scale_routed_moe'
author: bkryu
date: '2026-04-01'
url: https://github.com/flashinfer-ai/flashinfer/pull/2916
source_category: upstream-code
architectures:
- sm100
tags:
- block-scale
- fp4
- kernel-fusion
- moe
techniques:
- kernel-fusion
hardware_features:
- block-scale
- fp4
kernel_types:
- moe
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: 23b3279868432f1e93d3ce0c6217eb10131d18de
inclusion_reason: kernel file changes
changed_paths:
- flashinfer/fused_moe/core.py
- tests/autotuner/test_trtllm_fused_moe_autotuner_integration.py
head_ref_oid: 4f3acee8006686e82aed14bb463928b975b359de
artifact_dir: evidence/pull-bundles/flashinfer/gh-2916
---
# fix: Fix autotuner crash on meta-device tensor in trtllm_fp4_block_scale_routed_moe

- Repository: `flashinfer-ai/flashinfer`
- PR: [2916](https://github.com/flashinfer-ai/flashinfer/pull/2916)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `flashinfer/fused_moe/core.py`
- `tests/autotuner/test_trtllm_fused_moe_autotuner_integration.py`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-2916`
