...
Notes:
On the right side of the network(Genoa) there are 400 Gb/s IB network interface cards (NIC) installed - however a pair of the nodes each share one NIC - hence per node the effective bandwidth is 200 Gb/s.0
6 storage gateways (Lenovo ThinkSystem SR630 V2) provide access to the storage filesystems: /home, /scratch, and /sw
2 gateway servers provide access to the OPA network of the CLX partition.
Mellanox (acquired by Nvidia) manufactures InfiniBand host bus adapters and network switches.