// Machine Learning
AI GPU Cluster Optical Networking 400G 800G RoCEv2 RDMA Data Center InfiniBand Network Fabric H100 B200 LPO Machine Learning HPC

AI Fabrics Need Different Optics — GPU Clusters Are Not Normal Data Centers

Your data center runs web applications. Your procurement team buys optics for web application traffic. Then someone installs a GPU cluster, and the optics team discovers that AI fabric traffic

Rene Fichtmueller / 2026-04-28 / ~4 min read min read