#1831: Enable MPI in FFTW3 ------------------------------------+--------------------------------------- Reporter: eschnett | Owner: Type: enhancement | Status: reopened Priority: optional | Milestone: Component: EinsteinToolkit thorn | Version: development version Resolution: | Keywords: ------------------------------------+---------------------------------------
Comment (by eschnett):
This change allows parallel FFTs. Without this, only process-local FFTs are possible, which is limiting. I'd assume that most times you want an FFT, you'll have a uniform grid, and if you are running on multiple processes you will need the parallel version.