mpi_cartdim_get(3openmpi) [osx man page]

MPI_Cartdim_get(3OpenMPI)												 MPI_Cartdim_get(3OpenMPI)

NAME

       MPI_Cartdim_get	-  Retrieves Cartesian topology information associated with a communicator.

SYNTAX

C Syntax
       #include <mpi.h>
       int MPI_Cartdim_get(MPI_Comm comm, int *ndims)

Fortran Syntax
       INCLUDE 'mpif.h'
       MPI_CARTDIM_GET(COMM, NDIMS, IERROR)
	    INTEGER   COMM, NDIMS, IERROR

C++ Syntax
       #include <mpi.h>
       int Cartcomm::Get_dim() const

INPUT PARAMETER

       comm	 Communicator with Cartesian structure (handle).

OUTPUT PARAMETERS

       ndims	 Number of dimensions of the Cartesian structure (integer).

       IERROR	 Fortran only: Error status (integer).

DESCRIPTION

       MPI_Cartdim_get returns the number of dimensions of the Cartesian structure.

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.

SEE ALSO

       MPI_Cart_get
       MPI_Cart_create

Open MPI 1.2							  September 2006					 MPI_Cartdim_get(3OpenMPI)

MPI_Topo_test(3OpenMPI) 												   MPI_Topo_test(3OpenMPI)

NAME

       MPI_Topo_test - Determines the type of topology (if any) associated with a communicator.

SYNTAX

C Syntax
       #include <mpi.h>
       int MPI_Topo_test(MPI_Comm comm, int *top_type)

Fortran Syntax
       INCLUDE 'mpif.h'
       MPI_TOPO_TEST(COMM, TOP_TYPE, IERROR)
	    INTEGER   COMM, TOP_TYPE, IERROR

C++ Syntax
       #include <mpi.h>
       int Comm::Get_topology() const

INPUT PARAMETER

       comm	 Communicator (handle).

OUTPUT PARAMETERS

       top_type  Topology type of communicator comm (choice).

       IERROR	 Fortran only: Error status (integer).

DESCRIPTION

       The function MPI_Topo_test returns the type of topology that is assigned to a communicator.

       The output value top_type is one of the following:

	   MPI_GRAPH	   graph topology
	   MPI_CART	   Cartesian topology
	   MPI_UNDEFINED   no topology

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.

SEE ALSO

       MPI_Graph_create
       MPI_Cart_create

Open MPI 1.2							  September 2006					   MPI_Topo_test(3OpenMPI)