[dagw]

AMD kinda just... stopped developing their equivalents?

I wasn't so much that they stopped developing, rather they kept throwing everything out and coming out with new and non backwards compatible replacements. I knew people working in the GPU Compute field back in those days who were trying to support both AMD/ATI and NVidia. While their CUDA code just worked from release to release and every new release of CUDA just got better and better, AMD kept coming up with new breaking APIs and forcing rewrite and rewrite until they just gave up and dropped AMD.