> As the cherry on top, on paper one GPU family consists of different architectures! The RX 6700 XT identifies as a different 'architecture' (gfx1031) than the

> As the cherry on top, on paper one GPU family consists of different architectures! The RX 6700 XT identifies as a different 'architecture' (gfx1031) than the RX 6800 XT (gfx1030). These are 'close enough' that you can tell ROCm to use gfx1030 binaries on gfx1031 and it'll usually just work, but still. As far as I can tell, the gfx1030 and gfx1031 ISAs are identical in all but name. LLVM treats them exactly the same and all tests for the ROCm math libraries will pass when you run gfx1030 code on gfx1031 GPUs using the override. The Debian package for HIP has a patch so that if the user has a gfx1031 GPU and there are no gfx1031 code objects available, it will fall back to using gfx1030 code objects instead. When I proposed that patch upstream, it was rejected in favour of adding a new ISA that explicitly supports all the GPUs in a family. That solution is more complex and is taking longer to implement, but will more thoroughly solve that problem (as the solution Debian is using only works well when there's one ISA in the family that is a subset of all the others).