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.. _mpi_file_sync:
MPI_File_sync
=============
.. include_body
:ref:`MPI_File_sync` |mdash| Makes semantics consistent for data-access
operations (collective).
SYNTAX
------
C Syntax
^^^^^^^^
.. code-block:: c
#include <mpi.h>
int MPI_File_sync(MPI_File fh)
Fortran Syntax
^^^^^^^^^^^^^^
.. code-block:: fortran
USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_FILE_SYNC(FH, IERROR)
INTEGER FH, IERROR
Fortran 2008 Syntax
^^^^^^^^^^^^^^^^^^^
.. code-block:: fortran
USE mpi_f08
MPI_File_sync(fh, ierror)
TYPE(MPI_File), INTENT(IN) :: fh
INTEGER, OPTIONAL, INTENT(OUT) :: ierror
INPUT PARAMETER
---------------
* ``fh``: File handle (handle).
OUTPUT PARAMETER
----------------
* ``ierror``: Fortran only: Error status (integer).
DESCRIPTION
-----------
Calling :ref:`MPI_File_sync` with *fh* causes all previous writes to *fh* by
the calling process to be written to permanent storage. If other
processes have made updates to permanent storage, then all such updates
become visible to subsequent reads of *fh* by the calling process.
:ref:`MPI_File_sync` is a collective operation. The user is responsible for
ensuring that all nonblocking requests on *fh* have been completed
before calling :ref:`MPI_File_sync`. Otherwise, the call to :ref:`MPI_File_sync` is
erroneous.
ERRORS
------
.. include:: ./ERRORS.rst
|
