mp_ibcast_d Subroutine

      SUBROUTINE mp_ibcast_d (msg, source, gid, request)
      !! Broadcasts a datum to all processes.
      !!
      !! MPI mapping
      !! mpi_bcast

         REAL(kind=real_8)                                :: msg
         !! Datum to broadcast
         INTEGER                                  :: source, gid
         !! Processes which broadcasts
         !! Message passing environment identifier
         INTEGER, INTENT(INOUT)                   :: request

         CHARACTER(LEN=*), PARAMETER :: routineN = 'mp_ibcast_d'

         INTEGER                                  :: handle, ierr, msglen

         ierr = 0
         CALL timeset(routineN, handle)

         msglen = 1
#if defined(__parallel)
         CALL mpi_ibcast(msg, msglen, MPI_DOUBLE_PRECISION, source, gid, request, ierr)
         IF (ierr /= 0) CALL mp_stop(ierr, "mpi_ibcast @ "//routineN)
         CALL add_perf(perf_id=22, msg_size=msglen*real_8_size)
#else
         MARK_USED(msg)
         MARK_USED(source)
         MARK_USED(gid)
         request = mp_request_null
#endif
         CALL timestop(handle)
      END SUBROUTINE mp_ibcast_d