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MPI_File_get_group - Returns a duplicate of the process group of a
file.
C Syntax
#include <mpi.h>
int MPI_File_get_group(MPI_File fh, MPI_Group *group)
INCLUDE ’mpif.h’
MPI_FILE_GET_GROUP(FH, GROUP, IERROR)
INTEGER FH, GROUP, IERROR
#include <mpi.h>
MPI::Group MPI::File::Get_group() const
- fh
- File handle (handle).
- group
- Group
that opened the file (handle).
- IERROR
- Fortran only: Error status (integer).
MPI_File_get_group returns a duplicate of the group of the
communicator used to open the file associated with fh. The group is returned
in group. The user is responsible for freeing group, using MPI_Group_free.
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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