CUDA on Multiple cards

[rennocneb]

I have a system built up with GTX 285 tri SLI. Is there a way to get CUDA applications to use all 3 cards? I do a lot of after effects work which i beleive is cuda accelerated? or perhaps open gl accelerated?

 

[Sojuuk]

would be better asked in the PPU section i think.

but as far as I know not currently.

 

[Elledan]

With CUDA one task (kernel) runs on one CUDA device (usually GPU). You _must_ disable SLI for proper CUDA performance (else it can't properly identify the devices and won't see the three cards). Unless the CUDA-enabled application has scaling among CUDA devices built into it, it won't use more than one GPU.

For the CUDA applications my company is developing a dedicated CUDA card (GPU) is used together with the display card. For more extreme applications a Tesla card would be used.