---
id: pr-sglang-21734
repo: sgl-project/sglang
pr: 21734
title: 'perf: optimize PCG inductor path for FP8 models'
author: jasperjiaguo
date: '2026-04-14'
url: https://github.com/sgl-project/sglang/pull/21734
source_category: upstream-code
architectures:
- sm100
tags:
- benchmark_test
- compiler_runtime
- fused norm
- gemm_quant
- triton kernel
techniques:
- fine-grained-quantization
- kernel-fusion
hardware_features:
- fp8
kernel_types:
- compiler
- gemm
- norm
languages:
- cuda-cpp
- triton
captured_at: '2026-05-16'
status: merged
merge_sha: 6da3aba6a5d62f9b9b976553c46b5d45b88b3b13
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/layers/quantization/fp8_utils.py
- python/sglang/srt/models/utils.py
artifact_dir: evidence/pull-bundles/sglang/gh-21734
head_ref_oid: 2362060a540009c99486c8b3f26832a5a0732235
---
# perf: optimize PCG inductor path for FP8 models

- Repository: `sgl-project/sglang`
- PR: [21734](https://github.com/sgl-project/sglang/pull/21734)
- 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/layers/quantization/fp8_utils.py`
- `python/sglang/srt/models/utils.py`

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-21734`
