AMD Radeon "Aldebaran" Support Merged Into Mesa 21.1

Written by Michael Larabel in Radeon on 10 March 2021 at 02:55 PM EST. 1 Comment
The AMD Radeon "Aldebaran" successor to Arcturus has now landed the initial user-space code into Mesa 21.1.

Last month AMD's open-source graphics driver engineers began posting "Aldebaran" Linux kernel patches for this next-gen CDNA graphics card / accelerator. This came shortly after a new GFX90A target was added to LLVM in continuing the GFX9 (Vega) / CDNA family. That shader compiler back-end support indicated support for full-rate FP64 and other new capabilities.

The code drop today is providing Aldebaran support for Mesa, in particular with the RadeonSI Gallium3D driver. But considering it's another extension of GFX9 and is compute-focused, the Mesa enablement isn't all that interesting. There were less than 200 lines of new code for extending the Arcturus code paths and making other alterations for this Aldebaran GPU -- mostly adding checks over "no graphics" support. One interesting bit is the cache line size has doubled.

In any case those Aldebaran bits are now in Mesa Git ahead of next quarter's Mesa 21.1 stable release. Great seeing the timely open-source Radeon GPU support continue.
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