Commissioning · Cx
The structured testing (levels L1-L5) that proves a facility works correctly under load before it goes live.
Current numbers
~18× GB200 / ~9× GB300NVLink 5 per-GPU scale-up (~900 GB/s per direction) against one per-GPU scale-out NIC — ~18× on GB200/CX-7/400G, ~9× on GB300/CX-8/800G; keep collectives in scale-up
10–14 wkLevel-5 integrated systems testing for a liquid-cooled AI hall against a 4–6 wk air-cooled comparator — a planning range for sizing the commissioning tail, not a benchmark to schedule against
up to 1.6 Tb/sper-GPU scale-out bandwidth on the Rubin platform — two 800 Gb/s ConnectX-9 SuperNICs per GPU, not one 1.6T NIC; double the ConnectX-8 generation; BlueField-4 (integrates a CX-9) at 800 Gb/s