common /rtime/ dt_old, 
     $ dt, 
     $ time,
     $ ndump, 
     $ nstop, 
     $ lstep, 
     $ nloop, 
     $ nstart, 
     $ number_of_processors,
     $ local_proc
      real dt_old 
      real dt 
      real*8 time
      integer ndump 
      integer nstop 
      integer lstep 
      integer nloop 
      integer nstart 
      integer number_of_processors
      integer local_proc