Mikhail ChusavitinandClaude Sonnet 5
b11018ac5e
NVIDIA GPUs deliberately downclock PCIe to Gen1 at idle for power saving, and applyPCIeLinkSpeedWarning fired on every idle collector pass regardless - since component-status DB records never downgrade (Record() only ever raises severity), one boot-time idle sample permanently pinned pcie:gpu:nvidia to Warning for the rest of the session even after every load-bearing GPU SAT test passed clean. Two prior fixes (nvidia-smi-sourced link speed, pcie_aspm=off boot flag) didn't hold up against this hardware/driver combination - see bible-local/decisions/2026-08-24-pcie-gpu-gen1-idle-warning.md for the full history. Rather than add a downgrade path, stop writing an unverified status in the first place: parseLspciDevice no longer calls applyPCIeLinkSpeedWarning on the idle path. LinkSpeed/MaxLinkSpeed stay populated as plain descriptive fields; only a verified-under-load caller may now turn them into a status verdict. Two new SAT targets provide that verified signal: - pcie-link (platform/pcie_link_check.go): forces every enabled PCIe device - not just GPUs - to retrain via the PCIe spec's Link Control "Retrain Link" bit, then compares the negotiated speed against the device's max. Covers NICs/HBAs/switches that have no bee-gpu-burn equivalent load tool. Classifies by PCI class code + vendor ID, not name substrings. Routes gpu_nvidia/gpu_amd/other sub-verdicts into their own component-status keys so a degraded NIC never reads as a GPU fault. - nvidia-pcie-bandwidth (platform/nvidia_pcie_bandwidth.go): drives real host<->device traffic via dcgmi diag -r nvbandwidth and resamples link speed immediately after, independent of nvbandwidth's own pass/fail. Both wired into the task queue/webui the same way as nvidia-config (routes, dispatch, priority, Validate page cards, Run All Check SAT). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Architectural Decision Log
One file per decision, named YYYY-MM-DD-short-topic.md.
| Date | Decision | Status |
|---|---|---|
| 2026-03-05 | Use NVIDIA proprietary driver | active |
| 2026-04-01 | Treat memtest as explicit ISO content | active |
| 2026-04-29 | Treat embedded submodules as read-only | active |
| 2026-06-12 | Skip PCIe link-speed warnings for disabled devices | active |
| 2026-07-27 | Split the NVIDIA Bandwidth SAT into per-socket passes before the all-GPU pass | active |
| 2026-07-27 | Stream SAT job output live to disk and kick blackbox sync on job completion | active |
| 2026-07-28 | Move pci=realloc out of the default/toram/no-GUI GRUB entries | active |