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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 erro-
neous.
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++ func-
tions 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.
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