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 pro-
cesses 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++ 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.
Open MPI 1.2 September 2006 MPI_File_sync(3OpenMPI)
