Radeon Vega 20 Will Have XGMI - Linux Patches Posted For This High-Speed Interface

[phoronix]

Phoronix: Radeon Vega 20 Will Indeed Have XGMI - Linux Patches Posted

It has been expected that Vega 20 would feature XGMI as a high-speed GPU interconnect alternative to PCI Express and that was firmed up today thanks to a new set of AMDGPU Linux driver patches...

http://www.phoronix.com/scan.php?page=news_item&px=AMDGPU-XGMI-Vega20-Patches

[fuzz]

Wait, is this the first step toward chiplets on AMD GPUs??

[chris200x9]

Wait, is this the first step toward chiplets on AMD GPUs??

From what I've read, yes this is a first step toward chiplets but this does not necessarily mean that they are going in that direction.

[chithanh]

I guess XGMI has the same role as the Sideport in earlier Radeon generations, for now.

[fuzz]

From what I've read, yes this is a first step toward chiplets but this does not necessarily mean that they are going in that direction.

Incremental progress is the route toward success!

[bridgman]

I guess XGMI has the same role as the Sideport in earlier Radeon generations, for now.

Closer to home, its role is also similar to XGMI in dual-Epyc systems.

[Spazturtle]

This will dramatically improve HBCC. Higher bandwidth and lower latency then PCI-e means that reading from system memory no longer has a large performance penalty attached, and graphics cards will also be able to 'borrow' memory from other graphics cards if they run out.

[marty1885]

Anyone knows why they don't use the Infinity Fabric to interconnect the GPU dies?

[theriddick]

If they can do it on the hardware side of things, yay, but if its anything like SLI or Crossfire which require driver and software workarounds which almost never get fully supported and when they do they result in performance/graphics render issues! , no thanks.

[Peter Fodrek]

Closer to home, its role is also similar to XGMI in dual-Epyc systems.

but they do so
i the article
"XGMI is a peer-to-peer high-speed interconnect and is based on Infinity Fabric"