---
id: pr-sglang-18389
repo: sgl-project/sglang
pr: 18389
title: Nsa trtllm mla sparse fp8 support with Deepseek v3.2 NVFP4
author: rainj-me
date: '2026-02-16'
url: https://github.com/sgl-project/sglang/pull/18389
source_category: upstream-code
architectures:
- sm100
tags:
- attention
- fp4
- fp8
- mla
- nvfp4
techniques: []
hardware_features:
- fp4
- fp8
- nvfp4
kernel_types:
- attention
- mla
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: 0ffd0a3995e537c2ec6f450cbb7d4b4db44550aa
inclusion_reason: kernel file changes
changed_paths:
- docs/advanced_features/server_arguments.md
- docs/basic_usage/deepseek_v32.md
- python/sglang/srt/layers/attention/nsa_backend.py
- python/sglang/srt/layers/attention/trtllm_mla_backend.py
- python/sglang/srt/layers/attention/utils.py
- python/sglang/srt/mem_cache/memory_pool.py
- python/sglang/srt/model_executor/model_runner_kv_cache_mixin.py
- python/sglang/srt/models/deepseek_v2.py
- test/registered/hicache/test_nsa_pool_host_unit.py
- test/registered/kernels/test_nsa_indexer.py
head_ref_oid: e0c443b3c29de71cab51b21aeecd03f684cbd8f3
artifact_dir: evidence/pull-bundles/sglang/gh-18389
---
# Nsa trtllm mla sparse fp8 support with Deepseek v3.2 NVFP4

- Repository: `sgl-project/sglang`
- PR: [18389](https://github.com/sgl-project/sglang/pull/18389)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `docs/advanced_features/server_arguments.md`
- `docs/basic_usage/deepseek_v32.md`
- `python/sglang/srt/layers/attention/nsa_backend.py`
- `python/sglang/srt/layers/attention/trtllm_mla_backend.py`
- `python/sglang/srt/layers/attention/utils.py`
- `python/sglang/srt/mem_cache/memory_pool.py`
- `python/sglang/srt/model_executor/model_runner_kv_cache_mixin.py`
- `python/sglang/srt/models/deepseek_v2.py`
- `test/registered/hicache/test_nsa_pool_host_unit.py`
- `test/registered/kernels/test_nsa_indexer.py`

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-18389`
