---
id: pr-sglang-19089
repo: sgl-project/sglang
pr: 19089
title: Support skip-softmax attention
author: wenscarl
date: '2026-03-28'
url: https://github.com/sgl-project/sglang/pull/19089
source_category: upstream-code
architectures:
- sm100
tags:
- attention
- mla
- tma
techniques: []
hardware_features:
- tma
kernel_types:
- attention
- mla
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: efebcab43ed851405bd41cfdf206245945dbb8ee
inclusion_reason: kernel file changes
changed_paths:
- docs/references/environment_variables.md
- python/sglang/bench_serving.py
- python/sglang/benchmark/datasets/__init__.py
- python/sglang/benchmark/datasets/longbench_v2.py
- python/sglang/srt/environ.py
- python/sglang/srt/layers/attention/nsa_backend.py
- python/sglang/srt/layers/attention/trtllm_mha_backend.py
- python/sglang/srt/layers/attention/trtllm_mla_backend.py
head_ref_oid: c20fa0d496aa54677e49033a59154ef6d0bcafc6
artifact_dir: evidence/pull-bundles/sglang/gh-19089
---
# Support skip-softmax attention

- Repository: `sgl-project/sglang`
- PR: [19089](https://github.com/sgl-project/sglang/pull/19089)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `docs/references/environment_variables.md`
- `python/sglang/bench_serving.py`
- `python/sglang/benchmark/datasets/__init__.py`
- `python/sglang/benchmark/datasets/longbench_v2.py`
- `python/sglang/srt/environ.py`
- `python/sglang/srt/layers/attention/nsa_backend.py`
- `python/sglang/srt/layers/attention/trtllm_mha_backend.py`
- `python/sglang/srt/layers/attention/trtllm_mla_backend.py`

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-19089`
