Pick the governing reference architecture for a deal and speak its vocabulary: scalable units, node nomenclature, and the line between NVLink and the fabric.

1. 1.1 Which reference architecture governs this dealTwo leaf counts for the same serverU
2. 1.2 Reading node nomenclature: 2-8-9-400Nine adapters and a cable nobody orderedAn
3. 1.3 Scale-up is not scale-out: NVLink vs the fabricThe commodity fabricAn
4. 1.4 The networks in an AI factory, and what the RA refuses to specifyThe chapter that is not missingU
5. 1.5 The generation map: which SuperNIC is on the baseboardBlueField-3 is a family, not a speedAn
6. Checkpoint