Creates a division of processors in a cartesian grid


#include "mpi.h"
int MPI_Dims_create(nnodes, ndims, dims)
int  nnodes;
int  ndims;
int *dims;

Input Parameters

nnodes number of nodes in a grid (integer)
ndims number of cartesian dimensions (integer)

In/Out Parameter

integer array of size ndims specifying the number of nodes in each dimension

Notes for Fortran

All MPI routines in Fortran (except for MPI_WTIME and MPI_WTICK) havean additional argument ierr at the end of the argument list. ierris an integer and has the same meaning as the return value of the routinein C. In Fortran, MPI routines are subroutines, and are invoked with thecall statement.

All MPI objects (e.g., MPI_Datatype, MPI_Comm) are of type INTEGERin Fortran.