MPI_File_get_group(3)              Open MPI              MPI_File_get_group(3)



NAME
       MPI_File_get_group - Returns a duplicate of the process group of a
       file.


SYNTAX
       C Syntax
           #include <mpi.h>
           int MPI_File_get_group(MPI_File fh, MPI_Group *group)

       Fortran Syntax
           INCLUDE 'mpif.h'
           MPI_FILE_GET_GROUP(FH, GROUP,  IERROR)
                  INTEGER    FH, GROUP, IERROR


C++ Syntax
       #include <mpi.h>
       MPI::Group MPI::File::Get_group() const


INPUT PARAMETER
       fh        File handle (handle).


OUTPUT PARAMETERS
       group     Group that opened the file (handle).

       IERROR    Fortran only: Error status (integer).


DESCRIPTION
       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.


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.




1.4.1                            Jan 14, 2010            MPI_File_get_group(3)
