| # PASS — whole K2 timings and N4 greedy identity qualified |
|
|
| The sampled path replaces the selector in the complete production-weight K2 |
| worker. On the assigned solo GPU, its measured incremental median is 0.288–0.791 ms |
| per round across B1–B4 and output depths 4/5. All required greedy identities pass, |
| including the older runtime’s archived N4 proposals and confidence. Production |
| is unchanged. Physical-pair overhead and live target performance remain unmeasured. |
|
|
| ## MEASURED whole-worker cost |
|
|
| Both logical TP2 ranks execute on one SM86 card at 225 W. The timing fixture |
| contains four real N4 request states, with fixed query block 5 and output depth 4/5. |
| The table reports medians of five interleaved runs, each with 20 warmups and 100 |
| individually event-timed rounds. Each p95 is the maximum per-run p95; neither |
| that statistic nor the median difference is a live-pair upper bound. |
|
|
| | Batch | Output depth | OFF median ms | ON median ms | Increment ms | OFF p95 ms | ON p95 ms | |
| |---|---|---|---|---|---|---| |
| |1|4|3.666944|3.954976|0.288032|3.777536|4.332960| |
| |1|5|3.686400|3.999392|0.312992|3.767296|4.157408| |
| |2|4|4.331520|4.822768|0.491248|4.396032|4.921664| |
| |2|5|4.350976|4.892960|0.541984|4.452352|4.949344| |
| |3|4|4.888576|5.417216|0.528640|4.979712|5.526976| |
| |3|5|4.898816|5.484656|0.585840|4.968448|5.576160| |
| |4|4|5.779456|6.264480|0.485024|5.894144|6.401984| |
| |4|5|6.790144|7.581072|0.790928|6.918144|8.055680| |
|
|
| These measurements include the full K2 body, head, Markov conditioning, proposal |
| selection, graph replay and request-metadata handling. They exclude physical |
| NVLink exchange, proxy transport, target q expansion/correction and consumer wait. |
| Both ranks run sequentially on the solo; this is not production-pair latency. |
| The new peer exchange still needs the coordinator window. |
|
|
| ## MEASURED identity and runtime qualification |
|
|
| - All 120 identity cells pass: 48 all-T0 and 72 mixed-T0/T1 cells, totaling 228 |
| T0 request comparisons across 24 unique N4/NB1 states. Mixed masks alternate |
| both ways, covering every packed row offset. IDs and confidence are exact; |
| meaningful q payload on T0 rows is zero. |
| - All 48 archived B1 proposal digests and all 48 confidence digests match the |
| NB1 K2 receipt under the older CPython 3.12/Torch 2.10 runtime. This detects |
| no arithmetic drift on those 24 states at either output depth. It does not |
| prove identity for every possible state or the untested physical pair. |
| - Production checkpoint and Markov identities are verified against their |
| source/extracted-payload receipts before the model loads. |
| - Peak host RSS was 6.95 GiB; peak Torch GPU allocation was 9.47 GiB. The full |
| corrected run completed in 172.65 seconds. The card remained at 225 W; observed |
| active clocks varied within the cap. |
| - The required CPython 3.13/Torch 2.12 CUDA 13 environment successfully imports |
| rebuilt stock EXL3, FP32-accumulation EXL3 and P2P together. P2P has only CPU |
| build/import qualification; no production-pair GPU was used. |
|
|
| [full-worker.json](full-worker.json) contains the complete aggregate receipt, |
| per-run medians, clock readings and source/binary hashes. |
| [runtime-build.json](runtime-build.json) and [RUNTIME.md](RUNTIME.md) record the |
| dependency qualification and reproducible build instructions. No token IDs, |
| confidence values, capture tensors, prompts, weights or generated text appear |
| in these receipts. The archived reference contains digests only. |
|
|
| ## Harness correction and closeout |
|
|
| An initial loader attempt set `max_rows=128`, exceeding the production expert |
| scratch bound of 256 slots at `top_k=3`. It exited on the explicit guard. The |
| corrected `max_rows=32` covers B4 × block 5; insertion buckets remain independently |
| captured through 128 rows. No production assertion or test was weakened. |
|
|
| The final source, runner and archived-reference hashes reconcile with the |
| receipt. The solo returned to 1 MiB at 225 W, its lock is free, and the private |
| runtime tmux server is absent. Build/failed-attempt logs and the full public |
| object-reuse certificate are preserved as compressed campaign artifacts. |
| All runtime scratch remains scheduled for removal by the root lane. |
|
|
