NVLink vs. NVSwitch + InfiniBand
NVLink is a direct GPU-to-GPU interconnect that scales multi-GPU input/output (IO) within the server and is available in both form factors. Exclusive to SXM5, NVSwitch connects multiple NVLinks to provide all-to-all GPU communication at full NVLink speed within a single node. InfiniBand enables NVSwitch connections to be extended across nodes to create a seamless, high-bandwidth, multi-node GPU cluster - effectively forming a data center-sized GPU, making it possible to solve even the most extensive AI jobs rapidly.
