Here is an item to add to the wish list of future enhancements to the CUDA package -> real to real FFTs.
The 0.8b package comes with an FFT that supports only complex to complex (C2C) FFTs. Looking at the header file it appears that other types could be defined but aren’t yet.
My application is heavily based on FFTs but only needs real to real. Presumbly the R2R type would be faster which would be a nice benefit.