Why it matters

Training cluster design shapes model scale. Bad topology = wasted GPU time.

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The architecture

GPUs + NVLink node.

InfiniBand fabric.

Storage tier for data.

Training cluster designGPUs + NVLink8x per nodeInfiniBand fabricbetween nodesStoragedata + checkpointsFat-tree or dragonfly; 400 Gbps IB standard; multi-week job scale
Training cluster design.
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How it works end to end

NVLink within node.

InfiniBand 400 Gbps.

Storage tier for data.