mpi_graph_neighbors_count(3openmpi) [osx man page]

MPI_Graph_neighbors_count(3OpenMPI)									       MPI_Graph_neighbors_count(3OpenMPI)

NAME

       MPI_Graph_neighbors_count  - Returns the number of neighbors of a node associated with a graph topology.

SYNTAX

C Syntax
       #include <mpi.h>
       int MPI_Graph_neighbors_count(MPI_Comm comm, int rank,
	    int *nneighbors)

Fortran Syntax
       INCLUDE 'mpif.h'
       MPI_GRAPH_NEIGHBORS_COUNT(COMM, RANK, NNEIGHBORS, IERROR)
	    INTEGER   COMM, RANK, NNEIGHBORS, IERROR

C++ Syntax
       #include <mpi.h>
       int Graphcomm::Get_neighbors_count(int rank) const

INPUT PARAMETERS

       comm	 Communicator with graph topology (handle).

       rank	 Rank of process in group of comm (integer).

OUTPUT PARAMETERS

       nneighbors
		 Number of neighbors of specified process (integer).

       IERROR	 Fortran only: Error status (integer).

DESCRIPTION

       MPI_Graph_neighbors_count  and  MPI_Graph_neighbors  provide adjacency information for a general, graph topology. MPI_Graph_neighbors_count
       returns the number of neighbors for the process signified by rank.

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_neighbors

Open MPI 1.2							  September 2006			       MPI_Graph_neighbors_count(3OpenMPI)

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MPI_Comm_get_errhandler(3OpenMPI)										 MPI_Comm_get_errhandler(3OpenMPI)

NAME

       MPI_Comm_get_errhandler	- Retrieves error handler associated with a communicator.

SYNTAX

C Syntax
       #include <mpi.h>
       int MPI_Comm_get_errhandler(MPI_Comm comm,
	    MPI_Errhandler *errhandler)

Fortran Syntax
       INCLUDE 'mpif.h'
       MPI_COMM_GET_ERRHANDLER(COMM, ERRHANDLER, IERROR)
	    INTEGER   COMM, ERRHANDLER, IERROR

C++ Syntax
       #include <mpi.h>
       MPI::Errhandler MPI::Comm::Get_errhandler() const

INPUT PARAMETER

       comm	 Communicator (handle).

OUTPUT PARAMETERS

       errhandler
		 New error handler for communicator (handle).

       IERROR	 Fortran only: Error status (integer).

DESCRIPTION

       MPI_Comm_get_errhandler retrieves the error handler currently associated with a communicator. This call is identical to MPI_Errhandler_get,
       the use of which is deprecated.

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 the MPI man page for a full list of MPI error codes.

Open MPI 1.2							  September 2006				 MPI_Comm_get_errhandler(3OpenMPI)

Linux and UNIX Man Pages

mpi_graph_neighbors_count(3openmpi) [osx man page]

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