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Choose how many DGX B200 systems. FakeGPU works out the InfiniBand switches, the racks and the power, at the prices sellers list today.
Network: one 400 Gb/s InfiniBand port per GPU. Up to 64 GPUs share one 64-port QM9700 switch; above that, a two-level fat tree with 32 ports down and 32 up on each leaf switch. Four DGX B200 to a 42U rack; switches in their own racks once there is more than one. Not included: cables and optics, power distribution, cooling, storage and the building.