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AI & Machine Learning · Intermediate

NVLink

NVIDIA's high-bandwidth, low-latency GPU-to-GPU interconnect.

Definition

NVLink provides far more bandwidth than PCIe for scale-up communication; fifth-generation NVLink in Blackwell delivers 1.8 TB/s per GPU. NVLink Switch chips connect many GPUs into one domain, such as 72 GPUs in GB200 NVL72.

Exam tip

NVLink = scale-up within a node or rack; InfiniBand/Ethernet = scale-out across nodes.

Related terms