Two GPU cards (ATI and NVIDIA)

Accelerated Computing CUDA CUDA Programming and Performance
1

I have a new computer that came with an ATI Radeon HD 3400 graphics card. I wanted to do some CUDA computing so I purchased a Quadro NVS 420 card. The quadro card did not come with the proper video cables for my display, but I considered that of little consequence since I just wanted the card for GPU computing. I installed it side-by-side with the ATI card. The ATI card is still driving my display, but the NVIDIA card is also present. I installed the drivers, the CUDA v2.3 toolkit and the NVIDIA SDK. I have a C++ program that I’ve written that uses CUDA and works fine on several other cuda-capable systems. This program fails to run on the new system - the one with the ATI/NVIDIA combo. The program simply calls to CUFFT.DLL to perform some FFTs.

I’m wondering if there are special considerations that I need to take into account when running with two different boards installed in this manner.

Thanks for any help.

GB

2

you might need to have a display plugged in to the card, im no expert though.

3

What operating system are you using?

4

The OS is Windows XP Pro.

5

You won’t be able to do it. XP only supports a single active display driver. Vista and 7 (and whatever server versions are based off Vista and 7) can do it. So can Linux.

6

avid, you are wrong

xp and win 7 support multiple drivers, whereas vista only single
it must work on xp