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MPI_Win_free - Frees the window object and returns a null handle.
#include <mpi.h>
int MPI_Win_free(MPI_Win *win)
INCLUDE ’mpif.h’
MPI_WIN_FREE(WIN, IERROR)
INTEGER WIN, IERROR
#include <mpi.h>
void MPI::Win::Free()
- win
- Window object (handle).
- IERROR
- Fortran only: Error status (integer).
MPI_Win_free frees the
window object win and returns a null handle (equal to MPI_WIN_NULL). This
collective call is executed by all processes in the group associated with
win. It can be invoked by a process only after it has completed its involvement
in RMA communications on window win, that is, the process has called MPI_Win_fence,
or called MPI_Win_unlock to match a previous call to MPI_Win_lock. When
the call returns, the window memory can be freed.
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_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.
MPI_Win_create MPI_Win_fence MPI_Win_unlock
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