Help! Does device squence depends on pci slot squence GTX480

I have one GTX480 and one GTX285.

At the very beginning, device0 is GTX480 and device1 is GTX285. However, I exchanged the pci slot position of the two cards. But when running ./deviceQuery, I find that device0 is still GTX480.

I want the default one is GTX285. But it seems that the squence of cards does not depend on the squence of pci slot.

You can use cudaSetDevice() to choose which card is used for CUDA. No need to unplug any HW for :)

You can use cudaSetDevice() to choose which card is used for CUDA. No need to unplug any HW for :)