---
id: pr-sglang-18500
repo: sgl-project/sglang
pr: 18500
title: '[Flashinfer Autotune] Fix FlashInfer FP4 MoE autotuning crash by removing incorrect flatten on hidden_states_scale'
author: YAMY1234
date: '2026-02-12'
url: https://github.com/sgl-project/sglang/pull/18500
source_category: upstream-code
architectures:
- sm100
tags: []
techniques: []
hardware_features: []
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: 454676811ec7fdf4f0dea43607a5fdcc02c38ddb
inclusion_reason: defer
changed_paths:
- python/sglang/srt/layers/moe/fused_moe_triton/layer.py
artifact_dir: evidence/pull-bundles/sglang/gh-18500
head_ref_oid: 5e742d7e40890367cfde08e200da44d291d17079
---
# [Flashinfer Autotune] Fix FlashInfer FP4 MoE autotuning crash by removing incorrect flatten on hidden_states_scale

- Repository: `sgl-project/sglang`
- PR: [18500](https://github.com/sgl-project/sglang/pull/18500)
- Decision: `defer`
- Reason: defer

## Changed Paths

- `python/sglang/srt/layers/moe/fused_moe_triton/layer.py`

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-18500`
