mpi_win_unlock(3openmpi) [osx man page]

MPI_Win_unlock(3OpenMPI)												  MPI_Win_unlock(3OpenMPI)

NAME

       MPI_Win_unlock - Completes an RMA access epoch started by a call to MPI_Win_lock.

SYNTAX

C Syntax
       #include <mpi.h>
       int MPI_Win_unlock(int rank, MPI_Win win)

Fortran Syntax
       INCLUDE 'mpif.h'
       MPI_WIN_UNLOCK(RANK, WIN, IERROR)
	    INTEGER RANK, WIN, IERROR

C++ Syntax
       #include <mpi.h>
       void MPI::Win::Unlock(int rank) const

INPUT PARAMETERS

       rank	 Rank of window (nonnegative integer).

       win	 Window object (handle).

OUTPUT PARAMETER

       IERROR	 Fortran only: Error status (integer).

DESCRIPTION

       MPI_Win_unlock  completes  an  RMA  access epoch started by a call to MPI_Win_lock. RMA operations issued during this period will have com-
       pleted both at the origin and at the target when the call returns.

       Locks are used to protect accesses to the locked target window effected by RMA calls issued between the lock and unlock call, and  to  pro-
       tect local load/store accesses to a locked local window executed between the lock and unlock call. Accesses that are protected by an exclu-
       sive lock will not be concurrent at the window site with other accesses to the same window that are lock protected. Accesses that are  pro-
       tected by a shared lock will not be concurrent at the window site with accesses protected by an exclusive lock to the same window.

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_Win_lock

Open MPI 1.2							    March 2007						  MPI_Win_unlock(3OpenMPI)

Check Out this Related 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)

Linux and UNIX Man Pages

mpi_win_unlock(3openmpi) [osx man page]

Check Out this Related Man Page