BBuf/sglang-gpt-oss-optimization
skills/model-optimization/sglang/sglang-gpt-oss-optimization/SKILL.md
PR-backed optimization manual for GPT-OSS in SGLang. Use when an engineer needs to audit, debug, extend, or document OpenAI GPT-OSS MoE, MXFP4/FP8 quantization, DP/EP, reasoning parser, tool calling, and Eagle/spec decode.
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SKILL.md
- name:
- sglang-gpt-oss-optimization
- description:
- PR-backed optimization manual for GPT-OSS in SGLang. Use when an engineer needs to audit, debug, extend, or document OpenAI GPT-OSS MoE, MXFP4/FP8 quantization, DP/EP, reasoning parser, tool calling, and Eagle/spec decode.
SGLang GPT-OSS Optimization
Overview
This skill covers OpenAI GPT-OSS MoE, MXFP4/FP8 quantization, DP/EP, reasoning parser, tool calling, and Eagle/spec decode.
Evidence snapshot:
- SGLang mainline checked around
c122d343adb969cd9bbd1af2ca86727a11be3845 - sgl-cookbook checked around
e88b0fd8ac5b1caa6eb42766035029220053369b - Canonical PR notes:
references/pr-history.md - History mirrors:
model-pr-optimization-history/sglang/gpt-oss/README.zh.mdandREADME.en.md
Non-Negotiable Evidence Rule
Use skills/model-optimization/model-pr-diff-dossier/SKILL.md as the production bar.
Every PR cited for this family must be based on diff reading, not only PR titles.
Runtime Surfaces
sglang/python/sglang/srt/models/gpt_oss.py
Current Main Summary
- GPT-OSS is a flagship MoE family in SGLang.
- Quantization, expert-parallel topology, and reasoning/tool parser behavior all evolved quickly and need per-PR tracking.
Key Landed PRs
- #8843
Support mxfp4 for GPT-OSS: Added the headline quantized checkpoint path. - #8944
Expert Parallelism for GPT-OSS: Scaled GPT-OSS beyond pure tensor parallel. - #9043
Implement Native GPT-OSS Tool Call Support: Added native tool parser support instead of Harmony integration. - #9359
Support DP attention with GPT-OSS: Enabled larger topologies via DP attention. - #14920
GPT-OSS Eagle v2 support: Added speculative decoding support. - #18988
Support fp8 online quantization for gpt-oss bf16: Extended quantization coverage to online FP8.
Validation Lanes
- Startup on the cookbook checkpoint or example route.
- Re-run the parser, quantization, or multimodal lane that matches this family.
- Re-check registered or manual tests after touching loader or processor code.
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