[actionfromafar]

The argument I have read here on HN, is that CUDA is made for NVidia hardware, and the AMD hardware is not the best fit.

Essentially it forces AMD to play by NVidias rules, exactly like how they were forced to follow Intel rules. (Ignore for a second that the API / ISA boundary is different.)

But despite that, I also believe AMD would be better off just implementing CUDA.

[rincebrain]

They did, apparently, at one point pay someone to build that glue, and then threw it out and wouldn't let the author release it so he's been reimplementing it out of...spite? Burning desire? Unclear. [1]

I can't imagine the logic involved in "this is implemented, let's toss it in the dumpster" for that.

[1] - https://vosen.github.io/ZLUDA/blog/zludas-third-life/