SGLang CI/CD Test Coverage Improvements Initiative

This is the top-level tracking issue for a comprehensive initiative to improve SGLang's CI test coverage, with a focus on Blackwell GPU support.

Motivation

As SGLang expands to support more models, more hardware (especially Blackwell GPUs), and more deployment configurations, our CI test coverage needs to keep pace. Currently:

• Many tests run on Hopper but not on Blackwell
• Kernel-level tests mostly cover Triton-based kernels, leaving external backends (FlashInfer, DeepGemm, DeepEP, etc.) untested at the kernel level
• E2E accuracy tests are too expensive to scale across many configurations
• Key model/config combinations used in production may lack dedicated CI coverage

Plan

Proposed Test Hierarchy

Backlog: Hopper vs Blackwell Test Gaps

#20507

Tracks 112 test files (390 methods) that run on Hopper but not on Blackwell. 109 targeted for nightly, 3 for weekly. Tests span across all coverage layers. No active work planned — kept as a backlog for reference.

Roadmaps

Q2 2026 (April–June)

#20847

Weekly Progress

2026-03-18

• Restructured organization: closed coverage-level issues ([WIP][Tracking] Add Kernel-Level Tests for External Backends #20510, [RFE] Add Reduced-Layers Functional and Accuracy Tests #20512, [WIP][Tracking] Ensure Full E2E Tests for Key Models/Configs #20513), now using time-based quarterly roadmaps
• Created Q2 2026 roadmap tracking issue ([Tracking] SGLang CI/CD Test Coverage Improvements - Q2 2026 Roadmap #20847)
• Renamed Part 1 to "Backlog: Hopper vs Blackwell Test Gaps" — no active work planned

2026-03-13

• Created all four tracking issues and DLFW epics
• Identified 112 test files for Part 1 Hopper-to-Blackwell migration
• Identified 60 kernel test items for Part 2
• Defined test design for Part 3 reduced-layers tests (8 models)
• Defined 32 model/config items for Part 4