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MPI_File_get_group(3OpenMPI)                                                    MPI_File_get_group(3OpenMPI)



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 associ-ated associated
       ated 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.




Open MPI 1.2                                   September 2006                   MPI_File_get_group(3OpenMPI)