mpi_win_wait(3openmpi) [osx man page]

MPI_Win_wait(3OpenMPI)													    MPI_Win_wait(3OpenMPI)

NAME

       MPI_Win_wait - Completes an RMA exposure epoch started by a call to MPI_Win_post on win

SYNTAX

C Syntax
       #include <mpi.h>
       int MPI_Win_wait(MPI_Win win)

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

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

INPUT PARAMETERS

       win	 Window object (handle).

OUTPUT PARAMETERS

       IERROR	 Fortran only: Error status (integer).

DESCRIPTION

       MPI_Win_wait  is  a one-sided MPI communication synchronization call that completes an RMA exposure epoch started by a call to MPI_Win_post
       on win. This call matches calls to MPI_Win_complete(win) issued by each of the processes that were granted access to the window during this
       epoch.  The  call  to MPI_Win_wait blocks until all matching calls to MPI_Win_complete have occurred. This guarantees that all these origin
       processes have completed their RMA accesses to the local window. When the call returns, all these RMA accesses will have completed  at  the
       target 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_Win_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_post

Open MPI 1.2							    March 2007						    MPI_Win_wait(3OpenMPI)

MPI_Win_test(3OpenMPI)													    MPI_Win_test(3OpenMPI)

NAME

       MPI_Win_test - Attempts to complete an RMA exposure epoch; a nonblocking version of MPI_Win_wait

SYNTAX

C Syntax
       #include <mpi.h>
       int MPI_Win_test(MPI_Win win, int *flag)

Fortran Syntax
       INCLUDE 'mpif.h'
       MPI_WIN_TEST( WIN, FLAG, IERROR)
	    INTEGER  WIN, IERROR

C++ Syntax
       #include <mpi.h>
       bool MPI::Win::Test() const

INPUT PARAMETERS

       win	 Window object (handle)

OUTPUT PARAMETERS

       IERROR	 Fortran only: Error status (integer).

       flag	 The returning state of the test for epoch closure.

DESCRIPTION

       MPI_Win_test  is  a  one-sided  MPI  communication  synchronization  call,  a  nonblocking version of MPI_Win_wait. It returns ag = true if
       MPI_Win_wait would return, ag = false otherwise. The effect of return of MPI_Win_test with flag = true is the  same  as	the  effect  of  a
       return of MPI_Win_wait. If ag = false is returned, then the call has no visible effect.

       Invoke  MPI_Win_test  only  where MPI_Win_wait can be invoked. Once the call has returned ag = true, it must not be invoked anew, until the
       window is posted anew.

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_Win_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_post MPI_Win_wait

Open MPI 1.2							    March 2007						    MPI_Win_test(3OpenMPI)