---
id: pr-sglang-21411
repo: sgl-project/sglang
pr: 21411
title: '[GDN] Fuse GDN kkt + solve_tril into one kernel'
author: yuan-luo
date: '2026-03-29'
url: https://github.com/sgl-project/sglang/pull/21411
source_category: upstream-code
architectures:
- sm100
tags:
- attention
- kernel-fusion
techniques:
- kernel-fusion
hardware_features: []
kernel_types:
- attention
languages:
- python
captured_at: '2026-04-17'
status: merged
merge_sha: 343a7ac6529d3abb4c1c21f10c5c3231de1bf7ca
inclusion_reason: kernel file changes
changed_paths:
- python/sglang/srt/layers/attention/fla/chunk.py
- python/sglang/srt/layers/attention/fla/chunk_fwd.py
- python/sglang/srt/layers/attention/fla/fused_recurrent.py
- python/sglang/srt/layers/attention/fla/utils.py
- python/sglang/srt/layers/attention/fla/wy_fast.py
head_ref_oid: 4ea2f3d5f12289c8400f80f1213f639ac2ca5fe4
artifact_dir: evidence/pull-bundles/sglang/gh-21411
---
# [GDN] Fuse GDN kkt + solve_tril into one kernel

- Repository: `sgl-project/sglang`
- PR: [21411](https://github.com/sgl-project/sglang/pull/21411)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `python/sglang/srt/layers/attention/fla/chunk.py`
- `python/sglang/srt/layers/attention/fla/chunk_fwd.py`
- `python/sglang/srt/layers/attention/fla/fused_recurrent.py`
- `python/sglang/srt/layers/attention/fla/utils.py`
- `python/sglang/srt/layers/attention/fla/wy_fast.py`

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-21411`
