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GPU and Cuda

Hi,

I'm trying to use gpu functions in my code but it seems something has gone wrong. I followed all the instructions out there that's related to setting up the gpu. Cmake recognized my cuda graphics card and I compiled all libs and bins including the new gpu dll which came to about 1.5gb. The strange thing is that when I use the getCudaEnabledDeviceCount() it returns a -1 value, which I'm not sure what it stands for. But I guess its not right. And of course when I use any other gpu related function it crashes the program. I'm using Visual Studio 2005, OpenCV 2.45, on Windows XP x64.

Does anyone know if there is a compatibility issue between Visual Studio 2005 and Cuda?