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MPI_File_sync(3OpenMPI)                                                              MPI_File_sync(3OpenMPI)



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.





Open MPI 1.2                                   September 2006                        MPI_File_sync(3OpenMPI)