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NVIDIA InfiniBand Switches
NVIDIA Quantum NDR 400G and XDR 800G InfiniBand switches — the ultra-low-latency, lossless fabric backbone for HPC and AI clusters.
NVIDIA Quantum InfiniBand switches form the fabric backbone that carries inter-node communication in HPC and AI clusters with microsecond-level latency. NDR 400G and XDR 800G-class models deliver full bisection bandwidth in fat-tree, rail-optimized and dragonfly+ topologies.
Key Features
- NDR 400G — 400 Gb/s per port; up to 51.2 Tb/s aggregate in 64-port 1U switches
- XDR 800G — 800 Gb/s per port for next-generation GPU clusters
- NVIDIA SHARP (Scalable Hierarchical Aggregation and Reduction Protocol) — offloads collective operations into the network, shortening MPI/NCCL runtimes
- Adaptive routing and advanced congestion control for stable all-to-all traffic
- Managed and unmanaged models; integration with the UFM fabric manager
Use Cases
- Rail-optimized multi-rail design in H100/H200/B200 GPU clusters
- MPI-based simulation workloads such as CFD, FEA and molecular dynamics
- Fat-tree HPC fabrics scaling to thousands of nodes
- Gradual migration from existing HDR 200G infrastructure to NDR/XDR
Sizing and Procurement
Switch selection is based on node count, number of rails, target topology and growth scenario. Mevasis handles topology design, BOM generation, installation and UFM configuration end to end.
Pricing is not published as a list; contact us for project-specific configuration and quotations.