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MPI_Win_wait - Completes an RMA exposure epoch started by a call
to MPI_Win_post on win
#include <mpi.h>
int MPI_Win_wait(MPI_Win win)
INCLUDE ’mpif.h’
MPI_WIN_WAIT( WIN, IERROR)
INTEGER WIN, IERROR
#include <mpi.h>
void MPI::Win::Wait() const
- win
- Window object (handle).
- IERROR
- Fortran
only: Error status (integer).
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.
Almost all MPI routines return an error value; C routines
as the value of the function and Fortran routines in the last argument.
C++ functions 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.
MPI_Win_post
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