MPI_File_sync(3)                   Open MPI                   MPI_File_sync(3)



NAME
       MPI_File_sync - Makes semantics consistent for data-access operations
       (collective).


SYNTAX
       C Syntax
           #include <mpi.h>
           int MPI_File_sync(MPI_File fh)

       Fortran Syntax
           INCLUDE 'mpif.h'
           MPI_FILE_SYNC(FH, IERROR)
                  INTEGER    FH, IERROR


C++ Syntax
       #include <mpi.h>
       void MPI::File::Sync()


INPUT PARAMETER
       fh        File handle (handle).


OUTPUT PARAMETER
       IERROR    Fortran only: Error status (integer).


DESCRIPTION
       Calling 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.

       MPI_File_sync is a collective operation. The user is responsible for
       ensuring that all nonblocking requests on fh have been completed before
       calling MPI_File_sync. Otherwise, the call to MPI_File_sync is
       erroneous.


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++
       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. For MPI I/O function errors, the default error handler is set
       to MPI_ERRORS_RETURN. The error handler may be changed with
       MPI_File_set_errhandler; the predefined error handler
       MPI_ERRORS_ARE_FATAL may be used to make I/O errors fatal. Note that
       MPI does not guarantee that an MPI program can continue past an error.





1.4.1                            Jan 14, 2010                 MPI_File_sync(3)
