#network topology

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A liquid-cooled GPU compute tray half-slid into an open rack, its NVSwitch backplane connectors partly seated while the rack's rear cabling waits to be dressed.

How AI Datacenter Interconnects Actually Work

Scale-up fabrics move data at the speed of a shared memory space; scale-out fabrics move it at the speed of a switch queue. A training job lives across both, and where the boundary falls decides how fast the cluster actually trains.

By Brecht Corbeel · September 17, 2026 · 15 min read

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