Info Catalog fftw3: MPI Plan Creation fftw3: FFTW MPI Reference

fftw3: MPI Wisdom Communication

 
 6.12.6 MPI Wisdom Communication
 -------------------------------
 
 To facilitate synchronizing wisdom among the different MPI processes, we
 provide two functions:
 
      void fftw_mpi_gather_wisdom(MPI_Comm comm);
      void fftw_mpi_broadcast_wisdom(MPI_Comm comm);
 
    The 'fftw_mpi_gather_wisdom' function gathers all wisdom in the given
 communicator 'comm' to the process of rank 0 in the communicator: that
 process obtains the union of all wisdom on all the processes.  As a side
 effect, some other processes will gain additional wisdom from other
 processes, but only process 0 will gain the complete union.
 
    The 'fftw_mpi_broadcast_wisdom' does the reverse: it exports wisdom
 from process 0 in 'comm' to all other processes in the communicator,
 replacing any wisdom they currently have.
 
    FFTW MPI Wisdom.
 

Info Catalog fftw3: MPI Plan Creation fftw3: FFTW MPI Reference