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fftw3: FFTW MPI Transposes

 
 6.7 FFTW MPI Transposes
 =======================
 
 The FFTW's MPI Fourier transforms rely on one or more _global
 transposition_ step for their communications.  For example, the
 multidimensional transforms work by transforming along some dimensions,
 then transposing to make the first dimension local and transforming
 that, then transposing back.  Because global transposition of a
 block-distributed matrix has many other potential uses besides FFTs,
 FFTW's transpose routines can be called directly, as documented in this
 section.
 

Menu

 
· Basic distributed-transpose interface
· Advanced distributed-transpose interface
· An improved replacement for MPI_Alltoall
 

Info Catalog fftw3: Other Multi-dimensional Real-data MPI Transforms fftw3: Distributed-memory FFTW with MPI fftw3: FFTW MPI Wisdom