MPIFilesync(3OpenMPI) MPIFilesync(3OpenMPI)

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


SSYYNNTTAAXX
       C Syntax
           #include 
           int MPIFilesync(MPIFile fh)

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


CC++++ SSyynnttaaxx
       #include 
       void MPI::File::Sync()


IINNPPUUTT PPAARRAAMMEETTEERR
       fh        File handle (handle).


OOUUTTPPUUTT PPAARRAAMMEETTEERR
       IERROR    Fortran only: Error status (integer).


DESCRIPTION
       Calling MPIFilesync 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.

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


EERRRROORRSS
       Almost all MPI routines return an error value; C routines as the  value
       of  the  function  and Fortran routines in the last argument. C++ func-
       tions do not return errors. If the default  error  handler  is  set  to
       MPI::ERRORSTHROWEXCEPTIONS, 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  MPIERRORSRETURN.  The  error  handler   may   be   changed   with
       MPIFileseterrhandler;      the      predefined     error     handler
       MPIERRORSAREFATAL 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         MPIFilesync(3OpenMPI)