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Adopt the ownerless shared-physical-L2 mechanics from origin/l2_pooling onto the Phase-1 branch, behind --enable-cp-shared-physical-l2-hicache (default off -> behavior-neutral). Foundation for the B1 collective-free allocator (2b.1/2b.2) and the L3 durable floor (Phase 3); no coordination yet. - cp_shared_l2_pool.py (new): CpSharedL2PageAllocator (deterministic first-fit, capacity charged once, no x cp_size), hugetlbfs-2M slab primitives, position-indexed object ranges, commit-quorum data model. - memory_pool_host.py: SharedHostTensor* slab orchestration (3-way merged; fix-output's net change to this file is blank-line-only -> additions-only, no content lost). - server_args.py: flags + _handle_cp_shared_physical_l2_hicache_validation (3-way merged clean with Phase-1 assert + fix-output EnvField). - test_cp_shared_l2_pool.py: 75 unit tests (allocator/slab/quorum), green on g0033 syh-dev-new; envs stub provides SGLANG_REQ_WAITING_TIMEOUT (read by Phase-1 validation). Design + B1 proof: docs_internal/cp_hicache_2b_pooled_l2_b1_design.md (sec 2.4). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Registered Tests
Tests under this directory are auto-discovered by run_suite.py via CI registration decorators.
Where Should I Put My New Test?
No server / engine launch required
| What you're testing | Directory | Requires |
|---|---|---|
| Component logic in isolation (cache, scheduler, config, parser, etc.) | unit/<module>/ |
CPU or GPU |
| CUDA kernel correctness | kernels/ |
GPU |
Server / engine launch required (E2E)
| What you're testing | Directory | Requires |
|---|---|---|
| Model inference correctness | models/, 4-gpu-models/, 8-gpu-models/ |
GPU |
| Feature-specific (OpenAI API, LoRA, speculative, distributed, VLM, etc.) | openai_server/, lora/, spec/, distributed/, ... |
GPU |
| Benchmarks (performance, accuracy, stress) | benchmark/ |
GPU |
| Platform-specific | amd/, ascend/ |
Vendor GPU |
See unit/README.md for unit test conventions.