make writing last restart file optional (#9)

driver/fvGFS/atmosphere.F90

@@ -712,7 +712,7 @@ end subroutine atmosphere_dynamics
 
 !>@brief The subroutine 'atmosphere_end' is an API for the termination of the
 !! FV3 dynamical core responsible for writing out a restart and final diagnostic state.
- subroutine atmosphere_end (Time, Grid_box)
+ subroutine atmosphere_end (Time, Grid_box, restart_endfcst)
 #ifdef CCPP
 #ifdef STATIC
 ! For static builds, the ccpp_physics_{init,run,finalize} calls
@@ -727,6 +727,7 @@ subroutine atmosphere_end (Time, Grid_box)
 #endif
    type (time_type),      intent(in)    :: Time
    type(grid_box_type),   intent(inout) :: Grid_box
+   logical,               intent(in)    :: restart_endfcst
 
 #ifdef CCPP
    integer :: ierr
@@ -754,7 +755,7 @@ subroutine atmosphere_end (Time, Grid_box)
       call timing_off('FV_DIAG')
    endif
 
-   call fv_end(Atm, grids_on_this_pe)
+   call fv_end(Atm, grids_on_this_pe, restart_endfcst)
    deallocate (Atm)
 
    deallocate( u_dt, v_dt, t_dt, pref, dum1d )

model/fv_control.F90

@@ -592,17 +592,18 @@ end subroutine fv_init
 
 !>@brief The subroutine 'fv_end' terminates FV3, deallocates memory, 
 !! saves restart files, and stops I/O.
- subroutine fv_end(Atm, grids_on_this_pe)
+ subroutine fv_end(Atm, grids_on_this_pe, restart_endfcst)
 
     type(fv_atmos_type), intent(inout) :: Atm(:)
     logical, intent(INOUT) :: grids_on_this_pe(:)
+    logical, intent(in) :: restart_endfcst
 
     integer :: n
 
     call timing_off('TOTAL')
     call timing_prt( gid )
 
-    call fv_restart_end(Atm, grids_on_this_pe)
+    call fv_restart_end(Atm, grids_on_this_pe, restart_endfcst)
     call fv_io_exit()
 
   ! Free temporary memory from sw_core routines

tools/fv_restart.F90

@@ -1434,9 +1434,10 @@ end subroutine fv_write_restart
   !>@brief The subroutine 'fv_restart_end' writes ending restart files,
   !! terminates I/O, and prints out diagnostics including global totals
   !! and checksums.
-  subroutine fv_restart_end(Atm, grids_on_this_pe)
+  subroutine fv_restart_end(Atm, grids_on_this_pe, restart_endfcst)
     type(fv_atmos_type), intent(inout) :: Atm(:)
     logical, intent(INOUT) :: grids_on_this_pe(:)
+    logical, intent(in) :: restart_endfcst
 
     integer :: isc, iec, jsc, jec
     integer :: iq, n, ntileMe, ncnst, ntprog, ntdiag
@@ -1516,10 +1517,13 @@ subroutine fv_restart_end(Atm, grids_on_this_pe)
 
    enddo
 
-   call fv_io_write_restart(Atm, grids_on_this_pe)
-   do n=1,ntileMe
-      if (Atm(n)%neststruct%nested .and. grids_on_this_pe(n)) call fv_io_write_BCs(Atm(n))
-    end do
+   if ( restart_endfcst ) then
+     call fv_io_write_restart(Atm, grids_on_this_pe)
+!     print *,'af call fv_io_write_restart, restart_endfcst=',restart_endfcst
+     do n=1,ntileMe
+       if (Atm(n)%neststruct%nested .and. grids_on_this_pe(n)) call fv_io_write_BCs(Atm(n))
+     end do
+   endif
 
     module_is_initialized = .FALSE.