CUFFT Problem

Hi Guys , I try to run a C2C FFT on my GPU GTX 570 , System OpenSuse 12.10. My FFT Size is 2048 * 256. After running the C2C FFT a I get this :
nan -inf
nan inf
… …

I don´t now what happend , I check the global Memory , it is 1280 MBytes avaible on my GPU
I allocate Two Buffer on GPU with the size (2048 * 256) , I use floating point (4 Bytes on my System ).
Thank you for reply
Best Reply

Please post the code here (memory allocations, plan creations and calls). The calling might not be correct.