{
  "schema_version": 1,
  "name": "Quarkpad GPU load-log record",
  "updated_at": "2026-08-17",
  "status": "OWNER TELEMETRY RECORD - NOT SHOP PROOF",
  "scope": "Local analysis of one to eight NVIDIA GPU records captured during one watched home AI workload.",
  "command": "nvidia-smi --query-gpu=timestamp,pci.bus_id,name,temperature.gpu,power.draw,utilization.gpu --format=csv,noheader,nounits --loop=5 --filename=quarkpad-gpu-load.csv",
  "columns": [
    "timestamp",
    "pci.bus_id",
    "name",
    "temperature.gpu",
    "power.draw",
    "utilization.gpu"
  ],
  "limits": {
    "minimum_devices": 1,
    "maximum_devices": 8,
    "maximum_bytes": 2000000,
    "maximum_rows": 50000
  },
  "thresholds": {
    "target_duration_minutes": 20,
    "minimum_observed_span_seconds": 1195,
    "steady_window_seconds": 300,
    "minimum_steady_coverage_seconds": 295,
    "minimum_steady_utilization_percent": 80
  },
  "outcomes": [
    {
      "key": "incomplete",
      "meaning": "The fixed CSV format, shared time span, or required values are missing or invalid."
    },
    {
      "key": "recheck",
      "meaning": "The log is readable, but the watched-load, duration, final-window, or utilization gate is incomplete."
    },
    {
      "key": "stop",
      "meaning": "The owner saw a slowdown, fan, cable, airflow, or rising-temperature problem during the run."
    },
    {
      "key": "owner_recorded",
      "meaning": "The owner log contains the minimum comparison fields. It is not verified shop evidence."
    }
  ],
  "calculations": [
    "shared observed time span",
    "final five-minute mean temperature, power, and utilization for each PCI bus ID",
    "temperature rise above ambient for each device",
    "hottest steady device",
    "steady temperature spread",
    "total steady board power",
    "lowest steady utilization"
  ],
  "limitations": [
    "The file is read in the browser and is not uploaded.",
    "The command reads telemetry and writes one local CSV. It does not control a GPU or fan.",
    "PCI bus ID identifies a device in the system, not its physical cooling position.",
    "The basic log does not capture every thermal event or physical fault. The owner must watch the run.",
    "NVIDIA states that nvidia-smi output is not guaranteed to remain backwards compatible, so any format drift fails closed.",
    "Only matched shop-controlled runs may advance the Quarkpad thermal proof status."
  ],
  "sources": [
    "https://docs.nvidia.com/deploy/nvidia-smi/index.html",
    "https://www.reddit.com/r/LocalLLaMA/comments/1v72s1f/built_a_system_with_four_p100_gpus/"
  ]
}