I'm not saying that you can or should do this or that right now with a given piece of hardware, just what is and is not possible. The CPU on the FPGA's die coul

I'm not saying that you can or should do this or that right now with a given piece of hardware, just what is and is not possible. The CPU on the FPGA's die could be fast, embedded GPUs could be better at algorithmic acceleration (here - wait for a few years, they have good stuff in their pipeline), OpenCL drivers could be easily available (of course portability would still be a real problem) and people could then program embedded GPUs more easily, etc. I've personally been developing accelerators integrated onto the same die as a CPU for a long time and it works nicely enough.