Here was my experience. Everything in ocl ended up slower, with 30%+ longer (walltimes) on nvidia hardware. Also some problems with floating point precision. Re

Here was my experience. Everything in ocl ended up slower, with 30%+ longer (walltimes) on nvidia hardware. Also some problems with floating point precision. Real problem was there was no business case to switch because we could always make customers eat the cost of taking nvidia gpus. The added code complexity was not worth it - we originally did it as NRE for a big client who wanted OEM capabilities to our IP.