Thanks! Cuda does not support SLI at the moment, so it cannot be used anyway. All communication between the cards must go from one card, through the CPU, back to the other card. However, for my applications, the computations can be efficiently spread among several cards without any communication between the cards.
Could you clarify what you mean by "self-created" drivers? Any idea on the maximum number of individual (non-communicating, non-SLI) GPU's that will be seen by the standard driver in WinXP?
By "self-created" I mean drivers that you make yourself, on your own, modified, unauthorized, uncertified, etc. lol. I'm not exactly sure what the limit is for how many GPUs can be seen in the standard Windows XP VGA driver, but I'm assuming that it would have to be modified either way to allow for octal-GPU support.