[UnifiedTree]: HybridModel launches HiCache via UnifiedTree by default.

[hzh0425]

Motivation

Modifications

Accuracy Tests

Speed Tests and Profiling

Checklist

• Format your code according to the Format code with pre-commit.
• Add unit tests according to the Run and add unit tests.
• Update documentation according to Write documentations.
• Provide accuracy and speed benchmark results according to Test the accuracy and Benchmark the speed.
• Follow the SGLang code style guidance.

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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CI States

Latest PR Test (Base): ⏳ Run #27319526459
Latest PR Test (Extra): ⏳ Run #27319526384

[gemini-code-assist]

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[hzh0425]

/rerun-group radix_cache/unified_radix_tree

[github-actions]

Results for /rerun-group radix_cache/unified_radix_tree:

🚀 4-gpu-h100 (4 tests): ✅ View workflow run

cd test/ && python3 registered/radix_cache/unified_radix_tree/test_unified_radix_cache_hicache_pp_kl.py
cd test/ && python3 registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_cp.py
cd test/ && python3 registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_dsv4.py
cd test/ && python3 registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_mamba.py

🚀 2-gpu-h100 (2 tests): ✅ View workflow run

cd test/ && python3 registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_full.py
cd test/ && python3 registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_swa.py

🚀 8-gpu-h200 (1 test): ✅ View workflow run

cd test/ && python3 registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_nightly.py

[ispobock]

make them parallel condition?

[hzh0425]

let's modify after the 'extra-ci' finished

[hzh0425]

/rerun-test test/registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_dsv4.py

[github-actions]

Results for /rerun-test test/registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_dsv4.py:

🚀 4-gpu-h100 (1 test): ✅ View workflow run

cd test/ && python3 registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_dsv4.py

[hzh0425]

Last CI Run: https://github.com/sgl-project/sglang/actions/runs/27314953645/job/80693428549?pr=27759