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MPI_File_sync - Makes semantics consistent for data-access operations
(collective).
C Syntax
#include <mpi.h>
int MPI_File_sync(MPI_File fh)
USE MPI
! or the older form: INCLUDE ’mpif.h’
MPI_FILE_SYNC(FH, IERROR)
INTEGER FH, IERROR
USE mpi_f08
MPI_File_sync(fh, ierror)
TYPE(MPI_File), INTENT(IN) :: fh
INTEGER, OPTIONAL, INTENT(OUT) :: ierror
- fh
- File handle (handle).
- IERROR
- Fortran
only: Error status (integer).
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.
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.
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