---
id: pr-sglang-23756
repo: sgl-project/sglang
pr: 23756
title: 'feat: port SGLANG_JIT_DEEPGEMM_FAST_WARMUP to deepseek_v4 branch'
author: parrot18
date: '2026-04-27'
url: https://github.com/sgl-project/sglang/pull/23756
source_category: upstream-code
architectures:
- sm100
tags:
- CUDA kernel
- compiler_runtime
- deepgemm
- gemm_quant
- sampling kernel
techniques:
- fine-grained-quantization
hardware_features: []
kernel_types:
- compiler
- gemm
- sampling
languages:
- cuda-cpp
captured_at: '2026-05-16'
status: merged
merge_sha: c409f447844afbd7dc62e36fb427fa0d37493c33
inclusion_reason: Inspect scale layout, accumulator type, tile/schedule choice, epilogue fusion, and partial-tile guards before deriving a candidate.
changed_paths:
- python/sglang/srt/environ.py
- python/sglang/srt/layers/deep_gemm_wrapper/compile_utils.py
artifact_dir: evidence/pull-bundles/sglang/gh-23756
head_ref_oid: 1e0defd7e6d34998b49a5c140e6fc96bfa54d309
---
# feat: port SGLANG_JIT_DEEPGEMM_FAST_WARMUP to deepseek_v4 branch

- Repository: `sgl-project/sglang`
- PR: [23756](https://github.com/sgl-project/sglang/pull/23756)
- Decision: `Inspect scale layout, accumulator type, tile/schedule choice, epilogue fusion, and partial-tile guards before deriving a candidate.`
- Reason: Inspect scale layout, accumulator type, tile/schedule choice, epilogue fusion, and partial-tile guards before deriving a candidate.

## Changed Paths

- `python/sglang/srt/environ.py`
- `python/sglang/srt/layers/deep_gemm_wrapper/compile_utils.py`

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-23756`
