devs when you get a change could you please let us know about this gpu support for cpu mining which has been linked above?
To the best of our knowledge it's not possible. It sounds like he's achieved a speedup for some of the underlying hash functions (to be expected), but the overall hash still requires a CPU. Later on he says "provided that we achieve the necessary speed-ups for this to be worthwhile", which implies he's unsure of the final results.
Thanks Dev, that's what I thought in fairness, plus logically most gpu miners only have single core processors so it wont give them a huge spike in performance and any improvement will make it impossible to gpu mine at the same time.