[... Long text ending with: ]Would CPU hashing still be more efficient in a massively parallel cloud of clients, than some kind of virtual appliance, emulating the essential features of a GPU? Interesting possibilities methinks. Anyhow thanks for the info. You can learn so much, just by asking stupid questions to clever people. 
What kind of shit did you just smoked man?
You may want to stop thinking about emulating gpus and start thinking about... a futuristic society formed by talking trees and then use your energy to write a book about it.