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MPI_Cart_get function

  • Article

Retrieves Cartesian topology information associated with a communicator.

Syntax

int MPIAPI MPI_Cart_get(
   MPI_Comm               comm,
   int                    maxdims,
   _Out_cap_(maxdims) int *dims,
   _Out_cap_(maxdims) int *periods,
   _Out_cap_(maxdims) int *coords
);

Parameters

  • comm
    Communicator with cartesian structure.

  • maxdims
    Length of vectors dims, periods, and coords in the calling program.

  • dims
    Number of processes for each cartesian dimension.

  • periods
    Periodicity (true/false) for each cartesian dimension.

  • coords
    Coordinates of calling process in cartesian structure.

Return value

Returns MPI_SUCCESS on success. Otherwise, the return value is an error code.

In Fortran, the return value is stored in the IERROR parameter.

Fortran

    MPI_CART_GET(COMM, MAXDIMS, DIMS, PERIODS, COORDS, IERROR)
        INTEGER COMM, MAXDIMS, DIMS(*), COORDS(*), IERROR
        LOGICAL PERIODS(*)

Requirements

Product

HPC Pack 2012 MS-MPI Redistributable Package, HPC Pack 2008 R2 MS-MPI Redistributable Package, HPC Pack 2008 MS-MPI Redistributable Package or HPC Pack 2008 Client Utilities

Header

 Mpi.h; Mpif.h

Library

 Msmpi.lib

DLL

 Msmpi.dll

See also

MPI Process Topology Functions