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

       USE MPI
       ! or the older form: 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.