PG PPS Sieve GPU App

[Maxwell]

This is going to be a stupid question given that I've probably crunched 150M credits on this subproject, but is there a benefit to running more than one at a time? Worded differently, should I get off my lazy ass and run multiple WUs at a time?

[FourOh]

I found that for AMD cards, 2x yielded an advantage, but CUDA apps did not benefit. But, it's been a while since I tested.

[Maxwell]

I found that for AMD cards, 2x yielded an advantage, but CUDA apps did not benefit. But, it's been a while since I tested.
Cool. Thanks. I'll start working on that.