8001c4ae8e
CP HiCache ownership is page-granular, so a backed radix node must not be split inside a padded physical tail page. When a shorter hit would require an interior tail-page boundary, matching now floors to the previous page boundary and sacrifices the sub-page cache prefix instead of splitting ownership metadata. Constraint: Host/device/draft CP HiCache metadata tracks page owners and padded physical spans. Rejected: Split one padded tail page across two radix nodes | it would require half-page ownership semantics and risks double-counting capacity. Confidence: high Scope-risk: moderate Directive: Keep exact valid-tail hits, but floor partial backed-node splits to page boundaries unless metadata gains explicit sub-page ownership. Tested: Remote py_compile for hiradix_cache.py and test_cp_hicache_metadata.py in g0034 container. Tested: Remote pytest targeted backed-tail split tests plus exact valid-tail hit test: 3 passed. Tested: Remote pytest test_cp_hicache_metadata.py test_cp_hicache_load_back_owner_lanes.py: 92 passed, 5 warnings. Not-tested: Live ETE traffic under divergent short-prefix prompts. Co-authored-by: OmX <omx@oh-my-codex.dev>
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.