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Flex with SLI multi gpu, will there be a performance boost? #15

Closed ZhivaevDmitry closed 7 years ago

ZhivaevDmitry commented 7 years ago

Hello!

I planned to make complicated simulation with Flex and ue4, but the performance of one gtx 1080 ti is not enough to do what I want. If I connect one more gtx 1080 ti with sli bridge, if there will be a performance gain, or will it not affect the flex simulation in any way?

A side issue that arose: does the DirectCompute (which flex uses) work well in sli multi gpu mode?

sschirm commented 7 years ago

Hello! The flex library supports only one GPU for computations at the time. You could run the simulation on a different GPU than the rendering, which should give you a speedup, depending on your loads. See NvFlexInitDesc.

ZhivaevDmitry commented 7 years ago

Thanks!