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()
- 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.