I prefer to use OpenCL, but I think the second key factor why Nvidia dominates (the first is they integrated tooling) is that cuBLAS, cuFFT, cuDNN et.al work ou

I prefer to use OpenCL, but I think the second key factor why Nvidia dominates (the first is they integrated tooling) is that cuBLAS, cuFFT, cuDNN et.al work out of the box when you install CUDA Toolkit. clBLAS and clFFT? Good luck using them even on AMD hardware, yet alone on someone else's. And, of course, there is no cuDNN equivalent (that is beyond experimental)...