HIGH-BANDWIDTH GPU-TO-GPU INTERCONNECT
High-bandwidth GPU-to-GPU interconnect within a server
High-bandwidth GPU-to-GPU interconnect within a server
Rack-scale all-to-all fabric when used with NVLink Switch
AI & HPC · Data Center
Public source
NVIDIA NVLink is a publicly named high-bandwidth GPU-to-GPU interconnect used to scale multi-GPU input and output inside a server and, with NVLink Switch, across a rack.
Official technology image
NVIDIA NVLink is a high-bandwidth GPU-to-GPU interconnect and rack-scale fabric for AI training and inference. Distinct from NVLink-C2C chip-to-chip packaging links.
Official NVIDIA pages present NVLink as a scale-up fabric for AI training, inference and related GPU-accelerated workloads, including all-to-all GPU communication. NVLink Switch is a capability of this fabric rather than a separate listing. GPU architecture generations such as Hopper, Blackwell or Rubin are not independent interconnect technologies. NVLink-C2C, listed separately, is the package-level chip-to-chip coherent link, not this GPU-to-GPU fabric. Bandwidth figures and generation mappings should be confirmed on NVIDIA’s current NVLink pages.
Key characteristics associated with this technology.
High-bandwidth GPU-to-GPU interconnect within a server
Rack-scale all-to-all fabric when used with NVLink Switch
Described for AI training, inference and GPU-accelerated workloads
Distinct from NVLink-C2C package-level chip-to-chip interconnect
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