3 ms·
The issue is that RDNA and CDNA are different so when an enthusiast makes a fast RDNA code it doesn't mean it would work well on CDNA and vice-versa. Not sure w
by treprinum 3y ago
The issue is that RDNA and CDNA are different so when an enthusiast makes a fast RDNA code it doesn't mean it would work well on CDNA and vice-versa. Not sure why AMD had to go this route, only high-end pros will write software for CDNA and they won't get any mindshare.
- JonChesterfield 3y agoWhat do you have in mind for code that works noticeably better on one than the other?
- CuriousCosmic 3y agoThat's not accurate at all. Someone writing for the rocm platform will be writing HIP and then HIPCC will compile that down into the actual runtime targeting the given architecture. HIP is pretty platform agnostic so very little device specific optimization tends to go into idiomatic HIP.
- treprinum 3y agoThere are many low-level details in CUDA to get it working fast on a given GPU architecture that compilers don't address at all.