---
id: pr-sglang-21428
repo: sgl-project/sglang
pr: 21428
title: '[Bugfix] Lazy-import CuteDSL KDA kernel to fix AMD/ROCm startup crash'
author: hubertlu-tw
date: '2026-03-25'
url: https://github.com/sgl-project/sglang/pull/21428
source_category: upstream-code
architectures:
- sm100
tags:
- attention
techniques: []
hardware_features: []
kernel_types:
- attention
languages:
- cute-dsl
- python
captured_at: '2026-04-17'
status: merged
merge_sha: 7c7b2a8c97816b84c6c90ebe28e7e1a9ea334888
inclusion_reason: kernel file changes
changed_paths:
- python/sglang/srt/layers/attention/linear/kda_backend.py
head_ref_oid: 198a7a1e81e300c07680ddcff843a9aea951eada
artifact_dir: evidence/pull-bundles/sglang/gh-21428
---
# [Bugfix] Lazy-import CuteDSL KDA kernel to fix AMD/ROCm startup crash

- Repository: `sgl-project/sglang`
- PR: [21428](https://github.com/sgl-project/sglang/pull/21428)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `python/sglang/srt/layers/attention/linear/kda_backend.py`

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-21428`
