[petsc-users] Parallel 3d decomposed FFT

[frank]

Hi,

I am trying to use petsc's Interface to do a 3d FFT.
I created a 3d DMDA.  When I tried to call VecScatterPetsctoFFTW, I got 
error message saying "FFTW does not support parallel 3d FFT."
I understand that FFTW only supports 2d decomposition, like a 2d pencil. 
But is there any way I can use petsc to implement a 3d decomposed FFT?

Thank you,
Frank