Last week I noted "GFX90A" appearing in the AMD LLVM back-end and now the AMDGPU Linux kernel driver patches have appeared for "Aldebaran" that appear to be the codename for the next-generation CDNA part making use of GFX90A.

A set of 159 patches were just posted today for the Radeon Aldebaran enablement. The kernel patches indeed confirm this being GFX9 / GFX90A, putting it as CDNA rather than Navi/RDNA as is the case with GFX10. Aldebaran is likely the successor to the Radeon Instinct MI100.

Most exciting with GFX90A that we have seen is it will support full-rate FP64.

Three new PCI IDs are added for Aldebaran but they do not necessarily correspond to three SKUs definitively being launched but some may be reserved for future but unplanned variants or engineering models.

Digging through all the patches now but they can be found on amd-gfx .

There are 132k lines of code added but as usual most of that is automated register headers.