CUDA Driver install problem?

Accelerated Computing CUDA CUDA Setup and Installation
1

A little background first, I am a complete novice at GPU computing and this is the first time attempting it. Here is my current setup:

Windows 7 Professional x64
2 GeForce GTX 650s
Visual Studio 2012 Ultimate
CUDA 5.5 installed
current video driver installed: 320.18

Using the recommended install everything seemed to go smoothly for the CUDA 5.5 install toolkit. Afterwards I tried to run some of the samples provided and got an error that I had no current CUDA devices installed. So after going through the documentation I ran deviceQuery.exe and it gave back the following: “no CUDA-capable device detected Result = FAIL”.

If I am not mistaken there is a CUDA driver, which is separate from the graphics driver, that needs to be installed to be able to develop for CUDA. It can be installed either silently or via a GUI during the CUDA toolkit installation. The problem is that I don’t ever recall getting the window for a specific CUDA driver install. I went through the installer again and still didn’t see any mention of a specific CUDA driver, just a graphics driver.

Am I missing something somewhere?

2

Ok, so it looks like part of my question is answered. Just got done with NVidia online support and after some troubleshooting it looks like there is no problem with the driver. I still have the problem with no CUDA capable device being detected though, and they referred me here for more support. Could I be having a hardware problem, or is this a software bug?

3

Can you please elaborate a bit more about your problem?

  1. Detail log info when you run deviceQuery.exe
  2. Are the GPU detected in DeviceManager?
  3. Can you please run “NVIDIA-SMI.exe” in “C:\Program Files\NVIDIA Corporation\NVSMI” and paste log here?
  4. Did you install Driver 320.17 which come with CUDA 5.5 RC package?