I've never understood why they have such a fractured approach to software:hardware support. I remember reading and writing comments about this on hn nearly a decade ago now. It's a long time to keep making the same mistake.

They had the exact same kind of support issues back in the OpenCL days, where they didn't manage to provide cross platform, cross card support for same versions of the platform.

I have never been able to reconcile it with their turnaround and newfound competence on the CPU side.