Nek5000
SEM for Incompressible NS
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Parallel FFT. More...
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module | fft |
Parallel FFT.
This module provides a 3D parallel FFT through 1D FFTs and parallel transposes. It also provides access to the wave-number of each mode, given its index and the type of transform used for that axis.
This implementation uses FFTW for the 1D FFT and DCTs and MPI_AllToAll for the transposes.
Definition in file fft_fftw_mod.F90.