Multiple GPU problem

Discussion created by ThomasUCF on Oct 3, 2010
Latest reply on Oct 16, 2010 by himanshu.gautam
How to use multiple GPU to do calculation


   Hi All:

         The "simpleMultipleDevice" seems wrongly written in the SDK sample, for example, the "input" and "output" is reversed in the kernel.

         Also it seems I can only use GPU[0] to do calculation, someone told me to disable crossfire, I did it , then I can only find two GPUs in my system.(Used to be four).

         Here is my sistem:

         CPU: i7,        Operatiing system: win 7 64 bit

        GPU:  two HD 5970.

      This problem has bothered me for a long time, any explanations on this?

  Thanks a lot.