# Proof of GPU usage — H100 on vast.ai

- Node Hour index at rent time: **$2.69/h** (H100 SXM, quoted 2026-10-02T13:16:21.592Z)
- Rented: offer 40179478, H100 SXM, **$1.7355555555555555/h**, Washington, US
- Requested → running: 12 s; → SSH usable: 25 s
- GPU identity: `GPU-c0464b35-0f50-72f7-dbf9-13b22b54d2b9, NVIDIA H100 80GB HBM3, 550.163.01, 81559 MiB, 00000000:E3:00.0, 1650324009867`
- Workload: bf16 matmul 8192², 900.1 s, avg **681.7 TFLOPS**, result sha256 `6b3c0df9e516299ae7141229c9b8e6b9402943071e76375a8c57d6a1506a4f1a`
- $ per effective PFLOP-hour: **$2.5459**
- Billed (estimate): $0.4665 for 966 s
- Attestation: not available on this host (nvidia-smi conf-compute not supported)
- Log sha256: `3b882a654d25b3d733037c56dadc8357b12fb29e7ce26a724b54ed4ca0e1dd33`

Errors: none