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) vs one scale-out NIC per GPU: ~18× GB200/CX-7/400G, ~9× GB300/CX-8/800G
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
Sept 2025NERC Level 2 Recommendation on large loads (commissioning + ramp coordination); Project 2026-02 standards passed initial ballot 2026-09-19; Board approved registry criteria 2026-10-08