---
id: pr-tilelang-1548
repo: tile-ai/tilelang
pr: 1548
title: '[Enhancement] Support larger `H` in deepseek sparse mla backward via split-H'
author: Rachmanino
date: '2025-12-27'
url: https://github.com/tile-ai/tilelang/pull/1548
source_category: upstream-code
architectures:
- sm100
tags:
- attention kernel
techniques: []
hardware_features: []
kernel_types:
- attention
- mla
languages:
- cuda-cpp
captured_at: '2026-05-16'
status: merged
merge_sha: d70cf36333c82741ca9a920332e32a556f0fcd19
inclusion_reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.
changed_paths:
- examples/deepseek_v32/sparse_mla_bwd.py
- examples/deepseek_v32/test_tilelang_example_deepseek_v32.py
artifact_dir: evidence/pull-bundles/tilelang/gh-1548
head_ref_oid: 0bd0a71be7f05c7bb11b8f6346baeaa345fd1c85
---
# [Enhancement] Support larger `H` in deepseek sparse mla backward via split-H

- Repository: `tile-ai/tilelang`
- PR: [1548](https://github.com/tile-ai/tilelang/pull/1548)
- Decision: `Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.`
- Reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.

## Changed Paths

- `examples/deepseek_v32/sparse_mla_bwd.py`
- `examples/deepseek_v32/test_tilelang_example_deepseek_v32.py`

## Evidence Bundle

`evidence/pull-bundles/tilelang/gh-1548`
