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MPI_Cart_coords(3OpenMPI)			     MPI_Cart_coords(3OpenMPI)

NAME
       MPI_Cart_coords - Determines process coords in Cartesian topology given
       rank in group.

SYNTAX
C Syntax
       #include <mpi.h>
       int MPI_Cart_coords(MPI_Comm comm, int rank, int maxdims,
	    int *coords)

Fortran Syntax
       INCLUDE 'mpif.h'
       MPI_CART_COORDS(COMM, RANK, MAXDIMS, COORDS, IERROR)
	    INTEGER   COMM, RANK, MAXDIMS, COORDS(*), IERROR

C++ Syntax
       #include <mpi.h>
       void Cartcomm::Get_coords(int rank, int maxdims,
	    int coords[]) const

INPUT PARAMETERS
       comm	 Communicator with Cartesian structure (handle).

       rank	 Rank of a process within group of comm (integer).

       maxdims
		  Length of vector coord in the calling program (integer).

OUTPUT PARAMETERS
       coords	 Integer  array	 (of   size   ndims,which   was	  defined   by
		 MPI_Cart_create call) containing the Cartesian coordinates of
		 specified process (integer).

       IERROR	 Fortran only: Error status (integer).

DESCRIPTION
       The inverse mapping, rank-to-coordinates	 translation  is  provided  by
       MPI_Cart_coords.

ERRORS
       Almost  all MPI routines return an error value; C routines as the value
       of the function and Fortran routines in the last	 argument.  C++	 func‐
       tions  do  not  return  errors.	If the default error handler is set to
       MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism
       will be used to throw an MPI:Exception object.

       Before  the  error  value is returned, the current MPI error handler is
       called. By default, this error handler aborts the MPI job,  except  for
       I/O   function	errors.	  The	error  handler	may  be	 changed  with
       MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN
       may  be	used  to cause error values to be returned. Note that MPI does
       not guarantee that an MPI program can continue past an error.

Open MPI 1.2			September 2006	     MPI_Cart_coords(3OpenMPI)
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