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#341 bounded an NVML cumulative-energy counter from below in jouleclaw-energy. The same plausibility check exists in three more meter crates, and each still judged the counter in one direction only. A counter that accrued a fraction of what its board drew still advanced, so the liveness rule called it live. It was then graded `HwShunt` and spent an energy ceiling it was not measuring. Under-reporting is the unsafe direction at a ceiling (jcp SPEC §5): it admits work the budget cannot cover. A counter running fast fails safe. sandbox-meter, eoc-meter and jcp-energy now carry `CounterUnderRate`, judged against the same board telemetry and with the same constants as #341: floor = (mean_usable_draw - 5 W) / 4 So a counter one meter declines, another does not admit. The slack comes off the draw before the division, so an idle board makes no finding. The verdict carries the floor and the draw it was taken from. In sandbox-meter, which judges several GPUs per run, an under-report outranks an over-report, and the larger shortfall speaks. sandbox-meter's NVML probe only builds on Linux, so its verdict-to-status mapping was tested only by CI's Linux legs. The mapping now lives in the shared `liveness` module (`gpu_counter_status`), which builds and is tested on every platform. SPEC changes: - jcp §5.1: the plausibility rule is now two-sided, with the floor allowing for the draw's imprecision and never firing near idle. - jouleclaw §1.3: no longer claims the reference implementation already falls back to the power integral on an unvalidated GPU. It falls back only where it can refute the counter, and the bound is wide: a counter 13.3 % low passes it and is graded `HwShunt` until something it shares no error with validates it. Tests: 7 new across the three crates. All 12 mutations of the new logic are killed. Co-Authored-By: Claude Opus 5.5 <[email protected]> |
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