I have got a GTX 560.(win7_64, MATLAB 2012a,cuda 4.2, vs2010, windows sdks 7.1) Two days ago, i run some short and simple codes(eg: gpuDevice, gpuArray, gather) for test, and it's all right then. Then i downloaded the nvmex.m, and compiled a few .cu files. But now, something has really astonished me: when i run gpuDevice again, it tells me: Error using gpuDevice (line 26) No supported GPU device was found on this computer. To learn more about supported GPU devices, see www.mathworks.com/gpudevice.
the ans to gpuDeviceCount is 0.
How could it be that?
PS: as i am a new hand in programming, a detaied answer will be totally be appreciated. Thank you