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Support Intern-S2-Preview#24875

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ispobock merged 2 commits into
sgl-project:mainfrom
RunningLeon:s2preview
May 10, 2026
Merged

Support Intern-S2-Preview#24875
ispobock merged 2 commits into
sgl-project:mainfrom
RunningLeon:s2preview

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@RunningLeon
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@RunningLeon RunningLeon commented May 10, 2026

Motivation

Support internlm/Intern-S2-Preview

python3 -m sglang.launch_server \
    --model-path internlm/Intern-S2-Preview \
    --trust-remote-code \
    --tp-size 8 \
    --mem-fraction-static 0.8 \
    --attention-backend fa3 \
    --mm-attention-backend fa3 \
    --reasoning-parser qwen3 \
    --tool-call-parser qwen3_coder


Modifications

Accuracy Tests

Speed Tests and Profiling

Checklist

Review and Merge Process

  1. Ping Merge Oncalls to start the process. See the PR Merge Process.
  2. Get approvals from CODEOWNERS and other reviewers.
  3. Trigger CI tests with comments or contact authorized users to do so.
    • Common commands include /tag-and-rerun-ci, /tag-run-ci-label, /rerun-failed-ci
  4. After green CI and required approvals, ask Merge Oncalls or people with Write permission to merge the PR.

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@ispobock
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/tag-and-rerun-ci

@ispobock ispobock merged commit 335dbd6 into sgl-project:main May 10, 2026
203 of 237 checks passed
ltcs11 added a commit to ltcs11/sglang that referenced this pull request May 11, 2026
* main: (87 commits)
  [Fix] Disable FlashInfer allreduce fusion under deterministic inference (sgl-project#24629)
  fix: STANDALONE spec-decode hidden-size mismatch crash (sgl-project#24217)
  Followup fix for Custom AR V2 in non NVL scenarios (sgl-project#24742)
  Fix reduce_scatterv producer contract for SUM_LEN (sgl-project#24785)
  [NPU]Documentation update for communications quantization feature (sgl-project#24668)
  [Session R3] Add routed_experts_start_len for absolute routing slice control (sgl-project#24851)
  [Model] Add MiniCPM-V 4.6 support (sgl-project#24855)
  Support Intern-S2-Preview (sgl-project#24875)
  [PD] Unify dsv4 dispatch with swa (sgl-project#24888)
  Optimize MHC pipeline: DeepGemm, fused norm, fused hc_head (sgl-project#24775)
  Fix PD bootstrap failure handling (sgl-project#24772)
  [Spec] Cleanup idle stub and shape-check patterns (sgl-project#24881)
  [Bug] Add dsv4 state_type branch to mooncake disaggregation (sgl-project#24878)
  [Spec V1] Split draft-extend phase from `EagleDraftInput` into new `EagleDraftExtendInput` (sgl-project#24859)
  [Gemma4] Optimize Gemm4 with fused Q/K/V RMSNorm + per-expert FP8 ckpt loader (sgl-project#24696)
  [spec decoding] support kimi-k2.5-eagle3-mla (sgl-project#24826)
  [SPEC V2] fix: skip stale state updates in spec-v2 overlap (sgl-project#23456)
  [RL] Call torch.cuda.empty_cache() for `in-place` pause mode to avoid OOM (sgl-project#24854)
  [diffusion] CI: add cache-dit CI tests (sgl-project#19213)
  [Utils] Make request dump robust to unpicklable server_args and large meta_info (sgl-project#24767)
  ...

# Conflicts:
#	python/sglang/srt/utils/common.py
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