DOKK / manpages / debian 12 / lam-mpidoc / MPI_File_get_group.3.en
MPI_File_get_group(3) MPI-2 MPI_File_get_group(3)

MPI_File_get_group - Returns the group of processes that opened the file

#include "mpi.h"
int MPI_File_get_group(MPI_File fh, MPI_Group *group)

- file handle (handle)

- group that opened the file (handle)

All MPI routines in Fortran (except for 'MPI_WTIME' and 'MPI_WTICK') have an additional argument 'ierr' at the end of the argument list. 'ierr' is an integer and has the same meaning as the return value of the routine in C. In Fortran, MPI routines are subroutines and are invoked with the 'call' statement.

All MPI objects (e.g., 'MPI_Datatype', 'MPI_Comm', 'MPI_File') are of type 'INTEGER' in Fortran.

2/5/1998