Specifications
Speed
400Gb/s NDR InfiniBand / 400GbE
Ports
Single/Dual 400Gb/s QSFP112
Interface
PCIe Gen5 x16
RDMA
InfiniBand RDMA, RoCE v2
GPUDirect
GPUDirect RDMA + Storage
Encryption
Inline TLS/IPsec (400G line rate)
Features
MPI tag matching, adaptive routing, SHARP
Compatibility
NVIDIA Spectrum, Quantum switches
Use Case
Multi-node GPU cluster interconnects, distributed AI training (PyTorch FSDP, DeepSpeed), high-frequency trading network fabric, HPC simulation clusters, NVMe-oF storage networks. GPUDirect RDMA eliminates CPU/DDR copy overhead between GPU memory and network.
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