SiBILHow SiBIL works

A real report from an H200 server, measured with a spot check. The GPU reaches its reference. The host does not keep it busy, and its memory is smaller than the GPU memory.

Signed report · r-539393fadbabca97 · spot check

1× NVIDIA H200 NVL

Score / r-539393fadbabca97◻ Provisional
767/ 900
performance P0.999
balance B0.779
300 + 600 × min(P, B)767
Provisional: no grade
  • CPU AMD EPYC 9004/9005 (Genoa, Turin): no per-core reference values yet
  • provisional score, no grade: [Cpu] not rated
Subsystems / vs reference◻ 1.00 = reference
  • GPU compute1.000
  • GPU interconnect1.079
  • Memory0.995
  • CPUn/r
n/r not ratedbar mark at 1.00
Hardware◻ from the signed inventory
cpuAMD EPYC-Genoa Processor
gpuNVIDIA H200 NVL
hwidSC1-QZYG-ET8V-G33Y-KKCN
suite2026.11.0
model2026.11.0
issued30 Oct 2026, 13:26 UTC
valid to29 Nov 2026, 13:26 UTC
runr-539393fadbabca97
Balance rules / 6 checked● 2 flagged
  • B4Host keeps the GPUs busy (feed test)gpu0
    CPU-fed rate is 66 % of the on-GPU ratemeasured 0.662 min 0.85 ideal 1.00
  • B6Host memory at least the total GPU memorynode
    host 126 GiB, GPUs 140 GiBmeasured 0.896 min 1.00 ideal 2.00
  • B1PCIe link trained to full speed and widthgpu0
    32 GT/s x16 of 32 GT/s x16measured 1.000 min 1.00
  • B2Host-to-GPU bandwidth reaches the link limitgpu0
    57.2 GB/s of 53.0 GB/smeasured 1.079 min 0.80 ideal 1.00
  • B5Enough CPU cores per GPUnode
    16.0 physical cores per GPU, 8 expectedmeasured 2.000 min 1.00
  • B10GPU power limit not loweredgpu0
    600 W of 600 Wmeasured 1.000 min 0.95 ideal 1.00
Workload fit / 0 to 100◻ weakest limits shown
  • Fine-tuning74
    limited by host memory 0.45 · BF16 compute 0.69
  • LLM inference66
    limited by FP8 compute not measured · BF16 compute 0.69
  • HPC simulation43
    limited by CPU cores 0.06 · memory bandwidth 0.38
  • Rendering, transcode37
    limited by CPU cores 0.06 · host memory 0.45
  • Vision / audio training33
    limited by storage feed not measured · sustained clocks not measured
  • LLM training18
    limited by FP8 compute not measured · shared link not measured
  • Database, cache10
    limited by storage IOPS not measured · host memory size 0.06
  • CPU batch, CI9
    limited by storage IOPS not measured · CPU cores 0.06
Signature◻ checking

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sig_algecdsa-p256-sha256
key_id67c7762dc90ca121
key…
payload4f4cd266fb4a2ed2b74a0b5070ce042bad3124bf9d2d49799a13cdcb558a64bf
tier1 · file key

Check it offline: python3 verify.py sibil-report-r-539393fadbabca97.json <public key>. The signature is ECDSA P-256 over the payload as JSON with sorted keys and no spaces.