MPI_Win_free - Online Linux Manual PageSection : 3
Updated : Jan 21, 2016
Source : 1.10.2
Note : Open MPI

NAMEMPI_Win_free − Frees the window object and returns a null handle.

SYNTAX

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

Fortran SyntaxINCLUDE 'mpif.h' MPI_WIN_FREE(WIN, IERROR) INTEGER WIN, IERROR

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

INPUT/OUTPUT PARAMETERwin  Window object (handle).

OUTPUT PARAMETERIERROR  Fortran only: Error status (integer).

DESCRIPTIONMPI_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.

ERRORSAlmost 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.

SEE ALSOMPI_Win_create MPI_Win_fence MPI_Win_unlock
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