| # Version 0.2.1 patch validation and measured costs |
|
|
| This patch repairs public snapshot encapsulation and response visibility. It |
| does not change the support identity, error allowance or arithmetic proof. |
|
|
| ## Correctness defects closed |
|
|
| 1. Readonly NumPy views exposed owned model storage. Re-enabling writes could |
| alter retained values after the exact cache was constructed. Public array |
| getters now return independent readonly copies. The strengthened regression |
| uses a fresh valid model per property and directly tests separated signs. |
| 2. JSONL stdout was buffered when stdin remained open. Each complete record |
| now flushes before the next input line is read. A persistent-pipe regression |
| requires the first answer before EOF. This is visibility, not fsync durability. |
|
|
| The old getter regression passed because sequential negative mass mutations |
| forced exact fallback and masked later value mutations. Its earlier passing |
| result did not establish the stronger encapsulation claim. Before-fix evidence |
| is retained in `results/getter_defect_reproduction.json`; the old runtime remains |
| in the [historical runtime copy](../benchmarks/history/runtime_v0.2.0/) for reproduction only. |
|
|
| ## Fresh measurements of the patched runtime |
|
|
| The existing paired protocol was rerun on the patched frozen runtime: |
| 80 container/cell/seed cases and 7,200 checked coordinate decisions, all agreeing |
| with exact peers. No timed source changed. All historical data identities match. |
| This reuses the previous numerical fixtures on the same machine; it is a |
| patch qualification, not new independent data or second-machine replication. |
|
|
| | Input | Rows | Coordinates | Public call ms | Median speedup | Corrected bootstrap lower | 3x gate | |
| |---|---:|---:|---:|---:|---:|---| |
| | ndarray | 2048 | 1 | 0.19887 | 10.64x | 8.95x | Pass | |
| | ndarray | 2048 | 4 | 0.45983 | 11.24x | 9.03x | Pass | |
| | ndarray | 8192 | 1 | 0.37337 | 23.50x | 20.49x | Pass | |
| | ndarray | 8192 | 4 | 1.30606 | 16.58x | 15.86x | Pass | |
| | list | 2048 | 1 | 0.84596 | 2.58x | 2.45x | Fail | |
| | list | 2048 | 4 | 1.14334 | 4.41x | 4.13x | Pass | |
| | list | 8192 | 1 | 3.11614 | 2.88x | 2.68x | Fail | |
| | list | 8192 | 4 | 4.03084 | 5.26x | 4.88x | Pass | |
|
|
| Comparison uses each seed's fastest measured exact comparator, including GMP |
| direct support and integer sharp endpoints. Static preparation is amortized |
| over 1,000 updates; already-supplied arrays/lists exclude caller conversion. |
| Costs include input validation, fresh mass copying, predicate work and result |
| assembly in a running process. Imports, startup, witnesses, exact margins, |
| JSON encoding and filesystem I/O are outside the array result. Accepted filter |
| signs retain the declared IEEE/NumPy arithmetic premise. All ordinary routes |
| in this run were filtered; equality and adverse magnitudes remain exact fallback. |
|
|
| Near-boundary losses, tiny-array losses and the faster cached-endpoint path |
| remain relevant. Output flushing is outside this in-memory benchmark. No |
| independently engineered certified-filter comparator or production audit is |
| claimed. The measured ratio changes from 0.2.0 are timing observations, not |
| evidence that defensive copies or flushing accelerate the numerical hot path. |
|
|
| ## Reproduce |
|
|
| ```bash |
| OPENBLAS_NUM_THREADS=1 OMP_NUM_THREADS=1 MKL_NUM_THREADS=1 \ |
| python benchmarks/run_public_api.py --output benchmarks/results_public_api_v0.2.1.json |
| ``` |
|
|
| Install the declared benchmark extras first. The command must run from the |
| full source archive; optional benchmark dependencies are not runtime requirements. |
|
|
| Raw report SHA-256: |
|
|
| ```text |
| 6760815b0391c7d5603c4dcd24a32a2903bfadc3a6abeb2136e83c5ac9c66e1e |
| ``` |
|
|
