AMD Vega 20 to use XGMI as high-speed GPU interconnect

Posted on Thursday, Sep 06 2018 @ 12:23 CEST by Thomas De Maesschalck
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AMDGPU Linux driver patches reveal the company is working on XGMI, a rival to NVIDIA's NVLink interconnect. This is a multi-GPU interconnect for the professional market, the Vega 20 GPU will be the first to adopt it. XGMI is based on AMD's Infinity Fabric.
XGMI is a peer-to-peer high-speed interconnect and is based on Infinity Fabric. XGMI is basically AMD's alternative to NVIDIA's NVLink for inter-connecting GPUs. Previously leaked slides indicated that XGMI would be supported on Vega 20 along with PCI Express 4.0. That appears accurate as becoming public today were a set of patches wiring in XGMI support to the AMDGPU Direct Rendering Manager driver and explicitly enabling the functionality for Vega 20. It's also expected AMD's upcoming Naples server CPU architecture will also support XGMI.
Do note that this is for the professional market only, and not for the consumer space.

Via: Phoronix


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Thomas De Maesschalck

Thomas has been messing with computer since early childhood and firmly believes the Internet is the best thing since sliced bread. Enjoys playing with new tech, is fascinated by science, and passionate about financial markets. When not behind a computer, he can be found with running shoes on or lifting heavy weights in the weight room.



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