---
id: pr-sglang-18396
repo: sgl-project/sglang
pr: 18396
title: Fix TRT-LLM MLA backend applying k_scale to BF16 KV cache in BMM1
author: debo3
date: '2026-02-08'
url: https://github.com/sgl-project/sglang/pull/18396
source_category: upstream-code
architectures:
- sm100
tags: []
techniques: []
hardware_features: []
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: 031a652b936ce0a3e468b2de7411293b05d1c189
inclusion_reason: defer
changed_paths:
- python/sglang/srt/layers/attention/trtllm_mla_backend.py
artifact_dir: evidence/pull-bundles/sglang/gh-18396
head_ref_oid: 93cdb10bf7eb6565f605aa27d3d833402be2feae
---
# Fix TRT-LLM MLA backend applying k_scale to BF16 KV cache in BMM1

- Repository: `sgl-project/sglang`
- PR: [18396](https://github.com/sgl-project/sglang/pull/18396)
- Decision: `defer`
- Reason: defer

## Changed Paths

- `python/sglang/srt/layers/attention/trtllm_mla_backend.py`

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-18396`
