/[MITgcm]/MITgcm/model/src/forward_step.F
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revision 1.63 by jmc, Tue Oct 7 04:31:30 2003 UTC revision 1.127 by heimbach, Thu Dec 8 15:44:34 2005 UTC
# Line 1  Line 1 
1  C $Header$  C $Header$
2  C $Name$  C $Name$
3    
4    #include "PACKAGES_CONFIG.h"
5  #include "CPP_OPTIONS.h"  #include "CPP_OPTIONS.h"
6  cswdptr -- add --  
7  #ifdef ALLOW_GCHEM  #ifdef ALLOW_OFFLINE
8  # include "GCHEM_OPTIONS.h"  # include "OFFLINE_OPTIONS.h"
9    #endif
10    #ifdef ALLOW_GMREDI
11    # include "GMREDI_OPTIONS.h"
12  #endif  #endif
 cswdptr -- end add ---  
13    
14  CBOP  CBOP
15  C     !ROUTINE: FORWARD_STEP  C     !ROUTINE: FORWARD_STEP
# Line 36  C     == Global variables == Line 39  C     == Global variables ==
39  #include "EEPARAMS.h"  #include "EEPARAMS.h"
40  #include "PARAMS.h"  #include "PARAMS.h"
41  #include "DYNVARS.h"  #include "DYNVARS.h"
 #include "FFIELDS.h"  
42    
43  #ifdef ALLOW_NONHYDROSTATIC  #ifdef ALLOW_MNC
44  #include "CG3D.h"  #include "MNC_PARAMS.h"
45          EXTERNAL DIFFERENT_MULTIPLE
46          LOGICAL  DIFFERENT_MULTIPLE
47    #endif
48    
49    #ifdef HAVE_SIGREG
50    #include "SIGREG.h"
51  #endif  #endif
52    
53  #ifdef ALLOW_SHAP_FILT  #ifdef ALLOW_SHAP_FILT
54  #include "SHAP_FILT.h"  # include "SHAP_FILT.h"
55  #endif  #endif
56  #ifdef ALLOW_ZONAL_FILT  #ifdef ALLOW_ZONAL_FILT
57  #include "ZONAL_FILT.h"  # include "ZONAL_FILT.h"
58    #endif
59    #ifdef COMPONENT_MODULE
60    # include "CPL_PARAMS.h"
61  #endif  #endif
62    
63  #ifdef ALLOW_AUTODIFF_TAMC  #ifdef ALLOW_AUTODIFF_TAMC
64    # include "FFIELDS.h"
65    
66  # include "tamc.h"  # include "tamc.h"
67  # include "ctrl.h"  # include "ctrl.h"
68  # include "ctrl_dummy.h"  # include "ctrl_dummy.h"
69  # include "cost.h"  # include "cost.h"
70  # include "EOS.h"  # include "EOS.h"
71  # ifdef INCLUDE_EXTERNAL_FORCING_PACKAGE  # ifdef NONLIN_FRSURF
72    #  include "GRID.h"
73    # endif
74    # ifdef ALLOW_EXF
75  #  include "exf_fields.h"  #  include "exf_fields.h"
76    #  include "exf_clim_fields.h"
77  #  ifdef ALLOW_BULKFORMULAE  #  ifdef ALLOW_BULKFORMULAE
78  #   include "exf_constants.h"  #   include "exf_constants.h"
79  #  endif  #  endif
# Line 65  C     == Global variables == Line 82  C     == Global variables ==
82  #  include "OBCS.h"  #  include "OBCS.h"
83  # endif  # endif
84  # ifdef ALLOW_PTRACERS  # ifdef ALLOW_PTRACERS
85    #  include "PTRACERS_SIZE.h"
86  #  include "PTRACERS.h"  #  include "PTRACERS.h"
87  # endif  # endif
88    # ifdef ALLOW_CD_CODE
89    #  include "CD_CODE_VARS.h"
90    # endif
91    # ifdef ALLOW_EBM
92    #  include "EBM.h"
93    # endif
94    # ifdef EXACT_CONSERV
95    #  include "SURFACE.h"
96    # endif
97    # ifdef ALLOW_KPP
98    #  include "KPP.h"
99    # endif
100    # ifdef ALLOW_GMREDI
101    #  include "GMREDI.h"
102    # endif
103  #endif /* ALLOW_AUTODIFF_TAMC */  #endif /* ALLOW_AUTODIFF_TAMC */
104    
105  C     !LOCAL VARIABLES:  C     !LOCAL VARIABLES:
# Line 76  C           mytime are local variables p Line 109  C           mytime are local variables p
109  C           arguments. Although this is fiddly it saves the need to  C           arguments. Although this is fiddly it saves the need to
110  C           impose additional synchronisation points when they are  C           impose additional synchronisation points when they are
111  C           updated.  C           updated.
112  C     myiter - iteration counter for this thread  C     myIter - iteration counter for this thread
113  C     mytime - time counter for this thread  C     myTime - time counter for this thread
114  C     mythid - thread number for this instance of the routine.  C     myThid - thread number for this instance of the routine.
115        integer iloop        INTEGER iloop
116        integer mythid        INTEGER myThid
117        integer myiter        INTEGER myIter
118        _RL     mytime        _RL     myTime
119  #ifdef ALLOW_BULK_FORCE  
120        INTEGER bi,bj  C     == Local variables ==
121    #ifdef COMPONENT_MODULE
122          INTEGER myItP1
123  #endif  #endif
   
124  CEOP  CEOP
125    
126  #ifndef DISABLE_DEBUGMODE  #ifdef ALLOW_DEBUG
127        IF ( debugLevel .GE. debLevB )        IF ( debugLevel .GE. debLevB )
128       &    CALL DEBUG_ENTER('FORWARD_STEP',myThid)       &    CALL DEBUG_ENTER('FORWARD_STEP',myThid)
129  #endif  #endif
130    
131  #ifdef ALLOW_AUTODIFF_TAMC  #ifdef ALLOW_AUTODIFF_TAMC
132  C--   Reset the model iteration counter and the model time.  C--   Reset the model iteration counter and the model time.
133        myiter = nIter0 + (iloop-1)        myIter = nIter0 + (iloop-1)
134        mytime = startTime + float(iloop-1)*deltaTclock        myTime = startTime + float(iloop-1)*deltaTclock
135  #endif  #endif
136    
 #if (defined (ALLOW_AUTODIFF_TAMC) && defined (ALLOW_AUTODIFF_MONITOR))  
 C     Include call to a dummy routine. Its adjoint will be  
 C     called at the proper place in the adjoint code.  
 C     The adjoint routine will print out adjoint values  
 C     if requested. The location of the call is important,  
 C     it has to be after the adjoint of the exchanges  
 C     (DO_GTERM_BLOCKING_EXCHANGES).  
       CALL DUMMY_IN_STEPPING( myTime, myIter, myThid )  
 cph   I've commented this line since it may conflict with MITgcm's adjoint  
 cph   However, need to check whether that's still consistent  
 cph   with the ecco-branch (it should).  
 cph      CALL DO_FIELDS_BLOCKING_EXCHANGES( myThid )  
 #endif  
   
 #ifdef EXACT_CONSERV  
       IF (exactConserv) THEN  
 C--   Update etaH(n+1) :  
          CALL TIMER_START('UPDATE_ETAH        [FORWARD_STEP]',mythid)  
          CALL UPDATE_ETAH( myTime, myIter, myThid )  
          CALL TIMER_STOP ('UPDATE_ETAH        [FORWARD_STEP]',mythid)  
       ENDIF  
 #endif /* EXACT_CONSERV */  
   
 #ifdef NONLIN_FRSURF  
       IF ( select_rStar.NE.0 ) THEN  
 C--   r* : compute the future level thickness according to etaH(n+1)  
           CALL TIMER_START('CALC_R_STAR       [FORWARD_STEP]',mythid)  
           CALL CALC_R_STAR(etaH, myTime, myIter, myThid )  
           CALL TIMER_STOP ('CALC_R_STAR       [FORWARD_STEP]',mythid)  
       ELSEIF ( nonlinFreeSurf.GT.0) THEN  
 C--   compute the future surface level thickness according to etaH(n+1)  
           CALL TIMER_START('CALC_SURF_DR      [FORWARD_STEP]',mythid)  
           CALL CALC_SURF_DR(etaH, myTime, myIter, myThid )  
           CALL TIMER_STOP ('CALC_SURF_DR      [FORWARD_STEP]',mythid)  
       ENDIF  
 #endif /* NONLIN_FRSURF */  
   
 C--   Load forcing/external data fields.  
137  #ifdef ALLOW_AUTODIFF_TAMC  #ifdef ALLOW_AUTODIFF_TAMC
138  c**************************************  c**************************************
139  #include "checkpoint_lev1_directives.h"  #include "checkpoint_lev1_directives.h"
140  c**************************************  c**************************************
141  #endif  #endif
142    
143    C--   Switch on/off diagnostics for snap-shot output:
144    #ifdef ALLOW_DIAGNOSTICS
145          IF ( useDiagnostics ) THEN
146            CALL DIAGNOSTICS_SWITCH_ONOFF( myTime, myIter, myThid )
147          ENDIF
148    #endif
149    
150    C--   State-variables diagnostics
151          IF ( usediagnostics ) THEN
152            CALL TIMER_START('DO_STATEVARS_DIAGS  [FORWARD_STEP]',myThid)
153            CALL DO_STATEVARS_DIAGS( myTime, 0, myIter, myThid )
154            CALL TIMER_STOP ('DO_STATEVARS_DIAGS  [FORWARD_STEP]',myThid)
155          ENDIF
156    
157  C--   Call external forcing package  C--   Call external forcing package
158  #ifdef ALLOW_BULK_FORCE  #ifdef ALLOW_BULK_FORCE
159  #ifndef DISABLE_DEBUGMODE        IF ( useBulkForce ) THEN
160        IF ( useBulkforce ) THEN  #ifdef ALLOW_DEBUG
161         IF ( debugLevel .GE. debLevB )         IF ( debugLevel .GE. debLevB )
162       &    CALL DEBUG_CALL('BULKF_FIELDS_LOAD',myThid)       &    CALL DEBUG_CALL('BULKF_FIELDS_LOAD',myThid)
163  #endif  #endif
164         CALL TIMER_START('BULKF_FIELDS_LOAD[THE_MAIN_LOOP]',mythid)         CALL TIMER_START('BULKF_FORCING      [FORWARD_STEP]',mythid)
165         CALL BULKF_FIELDS_LOAD( mytime, myiter, mythid )  C-    load all forcing fields at current time
166         CALL TIMER_STOP ('BULKF_FIELDS_LOAD[THE_MAIN_LOOP]',mythid)         CALL BULKF_FIELDS_LOAD( myTime, myIter, myThid )
167  c calculate qnet and empmr (and wind stress)  C-    calculate qnet and empmr (and wind stress)
168         DO bj=myByLo(myThid),myByHi(myThid)         CALL BULKF_FORCING( myTime, myIter, myThid )
169           DO bi=myBxLo(myThid),myBxHi(myThid)         CALL TIMER_STOP ('BULKF_FORCING      [FORWARD_STEP]',mythid)
           CALL BULKF_FORCING( bi,bj, mytime, myiter, mythid )  
          ENDDO  
        ENDDO  
 c     Update the tile edges.  
        _EXCH_XY_R8(Qnet,   mythid)  
        _EXCH_XY_R8(EmPmR,   mythid)  
        CALL EXCH_UV_XY_RS(fu, fv, .TRUE., myThid)  
 C       _EXCH_XY_R8(fu     , mythid)  
 C       _EXCH_XY_R8(fv     , mythid)  
170        ELSE        ELSE
171  #endif /* ALLOW_BULK_FORCE */  #endif /* ALLOW_BULK_FORCE */
172    
173  # ifdef INCLUDE_EXTERNAL_FORCING_PACKAGE  # ifdef ALLOW_EXF
174  C     NOTE, that although the exf package is part of the  #  ifdef ALLOW_DEBUG
 C     distribution, it is not currently maintained, i.e.  
 C     exf is disabled by default in genmake.  
 #ifndef DISABLE_DEBUGMODE  
175        IF ( debugLevel .GE. debLevB )        IF ( debugLevel .GE. debLevB )
176       &    CALL DEBUG_CALL('EXF_GETFORCING',myThid)       &    CALL DEBUG_CALL('EXF_GETFORCING',myThid)
177  #endif  #  endif
178        CALL TIMER_START('EXF_GETFORCING     [FORWARD_STEP]',mythid)        CALL TIMER_START('EXF_GETFORCING     [FORWARD_STEP]',mythid)
179        CALL EXF_GETFORCING( mytime, myiter, mythid )        CALL EXF_GETFORCING( mytime, myiter, mythid )
180        CALL TIMER_STOP ('EXF_GETFORCING     [FORWARD_STEP]',mythid)        CALL TIMER_STOP ('EXF_GETFORCING     [FORWARD_STEP]',mythid)
181  # else /* INCLUDE_EXTERNAL_FORCING_PACKAGE undef */  # else /* ALLOW_EXF undef */
182  cph The following IF-statement creates an additional dependency  cph The following IF-statement creates an additional dependency
183  cph for the forcing fields requiring additional storing.  cph for the forcing fields requiring additional storing.
184  cph Therefore, the IF-statement will be put between CPP-OPTIONS,  cph Therefore, the IF-statement will be put between CPP-OPTIONS,
185  cph assuming that ALLOW_SEAICE has not yet been differentiated.  cph assuming that ALLOW_SEAICE has not yet been differentiated.
186  #  ifdef ALLOW_SEAICE  #  if (defined (ALLOW_SEAICE) || defined (ALLOW_EBM))
187        IF ( .NOT. useSEAICE ) THEN        IF ( .NOT. useSEAICE .AND. .NOT. useEBM ) THEN
188  #  endif  #  endif
189  #ifndef DISABLE_DEBUGMODE  #ifdef ALLOW_DEBUG
190         IF ( debugLevel .GE. debLevB )         IF ( debugLevel .GE. debLevB )
191       &    CALL DEBUG_CALL('EXTERNAL_FIELDS_LOAD',myThid)       &    CALL DEBUG_CALL('EXTERNAL_FIELDS_LOAD',myThid)
192  #endif  #endif
193         CALL TIMER_START('EXTERNAL_FIELDS_LOAD[FORWARD_STEP]',mythid)         CALL TIMER_START('EXTERNAL_FIELDS_LOAD[FORWARD_STEP]',mythid)
194         CALL EXTERNAL_FIELDS_LOAD( mytime, myiter, mythid )         CALL EXTERNAL_FIELDS_LOAD( mytime, myiter, mythid )
195         CALL TIMER_STOP ('EXTERNAL_FIELDS_LOAD[FORWARD_STEP]',mythid)         CALL TIMER_STOP ('EXTERNAL_FIELDS_LOAD[FORWARD_STEP]',mythid)
196  #  ifdef ALLOW_SEAICE  #  if (defined (ALLOW_SEAICE) || defined (ALLOW_EBM))
197        ENDIF        ENDIF
198  #  endif  #  endif
199  # endif /* INCLUDE_EXTERNAL_FORCING_PACKAGE */  # endif /* ALLOW_EXF */
200  #ifdef ALLOW_BULK_FORCE  #ifdef ALLOW_BULK_FORCE
201  C--   end of if/else block useBulfforce --  C--   end of if/else block useBulfforce --
202        ENDIF        ENDIF
203  #endif /* ALLOW_BULK_FORCE */  #endif /* ALLOW_BULK_FORCE */
204    
205  #if (defined (ALLOW_ADJOINT_RUN) || defined (ALLOW_TANGENTLINEAR_RUN))  #ifdef ALLOW_AUTODIFF
206  c--   Add control vector for forcing and parameter fields  c--   Add control vector for forcing and parameter fields
207        if ( myiter .EQ. nIter0 )        if ( myiter .EQ. nIter0 )
208       &     CALL CTRL_MAP_FORCING (mythid)       &     CALL CTRL_MAP_FORCING (mythid)
209  #endif  #endif
210    
211    #if (defined (ALLOW_AUTODIFF_TAMC) && defined (ALLOW_AUTODIFF_MONITOR))
212    C     Include call to a dummy routine. Its adjoint will be
213    C     called at the proper place in the adjoint code.
214    C     The adjoint routine will print out adjoint values
215    C     if requested. The location of the call is important,
216    C     it has to be after the adjoint of the exchanges
217    C     (DO_GTERM_BLOCKING_EXCHANGES).
218          CALL DUMMY_IN_STEPPING( myTime, myIter, myThid )
219    cph   I've commented this line since it may conflict with MITgcm's adjoint
220    cph   However, need to check whether that's still consistent
221    cph   with the ecco-branch (it should).
222    cph      CALL DO_FIELDS_BLOCKING_EXCHANGES( myThid )
223    #endif
224    
225  # ifdef ALLOW_SEAICE  # ifdef ALLOW_SEAICE
226  C--   Call sea ice model to compute forcing/external data fields.  In  C--   Call sea ice model to compute forcing/external data fields.  In
227  C     addition to computing prognostic sea-ice variables and diagnosing the  C     addition to computing prognostic sea-ice variables and diagnosing the
# Line 223  C     term.  Because this call precedes Line 234  C     term.  Because this call precedes
234  C     under sea-ice may not be "exactly" at the freezing point by the time  C     under sea-ice may not be "exactly" at the freezing point by the time
235  C     theta is dumped or time-averaged.  C     theta is dumped or time-averaged.
236        IF ( useSEAICE ) THEN        IF ( useSEAICE ) THEN
237  #ifndef DISABLE_DEBUGMODE  #ifdef ALLOW_DEBUG
238           IF ( debugLevel .GE. debLevB )           IF ( debugLevel .GE. debLevB )
239       &    CALL DEBUG_CALL('SEAICE_MODEL',myThid)       &    CALL DEBUG_CALL('SEAICE_MODEL',myThid)
240  #endif  #endif
# Line 240  CADJ STORE ptracer  = comlev1, key = ike Line 251  CADJ STORE ptracer  = comlev1, key = ike
251  # endif  # endif
252  #endif  #endif
253    
254    #ifdef ALLOW_OFFLINE
255            call OFFLINE_FIELDS_LOAD( myTime, myIter, myThid )
256    #endif
257    
258  #ifdef ALLOW_PTRACERS  #ifdef ALLOW_PTRACERS
259  # ifdef ALLOW_GCHEM  # ifdef ALLOW_GCHEM
260            IF ( useGCHEM ) THEN
261    #ifdef ALLOW_DEBUG
262             IF ( debugLevel .GE. debLevB )
263         &        CALL DEBUG_CALL('GCHEM_FIELDS_LOAD',myThid)
264    #endif /* ALLOW_DEBUG */
265           CALL GCHEM_FIELDS_LOAD( mytime, myiter, mythid )           CALL GCHEM_FIELDS_LOAD( mytime, myiter, mythid )
266            ENDIF
267  # endif  # endif
268  #endif  #endif
269    
270    #ifdef ALLOW_RBCS
271            IF ( useRBCS ) THEN
272             CALL RBCS_FIELDS_LOAD( mytime, myiter, mythid )
273            ENDIF
274    #endif
275    
276    #ifdef COMPONENT_MODULE
277           IF ( useCoupler .AND. cpl_earlyExpImpCall ) THEN
278    C      Post coupling data that I export.
279    C      Read in coupling data that I import.
280             CALL TIMER_START('CPL_EXPORT-IMPORT  [FORWARD_STEP]',myThid)
281             CALL CPL_EXPORT_MY_DATA(       myIter, myTime, myThid )
282             CALL CPL_IMPORT_EXTERNAL_DATA( myIter, myTime, myThid )
283             CALL TIMER_STOP ('CPL_EXPORT-IMPORT  [FORWARD_STEP]',myThid)
284           ENDIF
285    #endif /* COMPONENT_MODULE */
286    
287    #ifdef ALLOW_EBM
288            IF ( useEBM ) THEN
289    # ifdef ALLOW_DEBUG
290             IF ( debugLevel .GE. debLevB )
291         &    CALL DEBUG_CALL('EBM',myThid)
292    # endif
293             CALL TIMER_START('EBM                [FORWARD_STEP]',mythid)
294             CALL EBM_DRIVER ( myTime, myIter, myThid )
295             CALL TIMER_STOP ('EBM                [FORWARD_STEP]',mythid)
296            ENDIF
297    #endif
298    
299  C--     Step forward fields and calculate time tendency terms.  C--     Step forward fields and calculate time tendency terms.
300  #ifndef DISABLE_DEBUGMODE  
301        IF ( debugLevel .GE. debLevB )  #ifdef ALLOW_DEBUG
302       &    CALL DEBUG_CALL('THERMODYNAMICS',myThid)         IF ( debugLevel .GE. debLevB )
303         &    CALL DEBUG_CALL('DO_ATMOSPHERIC_PHYS',myThid)
304  #endif  #endif
305          CALL TIMER_START('THERMODYNAMICS      [FORWARD_STEP]',mythid)         CALL TIMER_START('DO_ATMOSPHERIC_PHYS [FORWARD_STEP]',mythid)
306          CALL THERMODYNAMICS( myTime, myIter, myThid )         CALL DO_ATMOSPHERIC_PHYS( myTime, myIter, myThid )
307          CALL TIMER_STOP ('THERMODYNAMICS      [FORWARD_STEP]',mythid)         CALL TIMER_STOP ('DO_ATMOSPHERIC_PHYS [FORWARD_STEP]',mythid)
308    
309  C--   do exchanges (needed for DYNAMICS) when using stagger time-step :  #ifdef ALLOW_AUTODIFF_TAMC
310  #ifndef DISABLE_DEBUGMODE  CADJ STORE theta              = comlev1, key = ikey_dynamics
311        IF ( debugLevel .GE. debLevB )  CADJ STORE salt               = comlev1, key = ikey_dynamics
312       &    CALL DEBUG_CALL('DO_STAGGER_FIELDS_EXCH.',myThid)  CADJ STORE totphihyd          = comlev1, key = ikey_dynamics
313    CADJ STORE surfaceforcingtice = comlev1, key = ikey_dynamics
314    # ifdef ALLOW_KPP
315    CADJ STORE uvel               = comlev1, key = ikey_dynamics
316    CADJ STORE vvel               = comlev1, key = ikey_dynamics
317    # endif
318    # ifdef EXACT_CONSERV
319    CADJ STORE empmr              = comlev1, key = ikey_dynamics
320    CADJ STORE pmepr              = comlev1, key = ikey_dynamics
321    # endif
322    # ifdef NONLIN_FRSURF
323    cph-test
324    CADJ STORE hFac_surfC         = comlev1, key = ikey_dynamics
325    CADJ STORE hfac_surfs         = comlev1, key = ikey_dynamics
326    CADJ STORE hfac_surfw         = comlev1, key = ikey_dynamics
327    CADJ STORE hFacC, hFacS, hFacW
328    CADJ &     = comlev1, key = ikey_dynamics
329    CADJ STORE recip_hFacC, recip_hFacS, recip_hFacW
330    CADJ &     = comlev1, key = ikey_dynamics
331    # endif
332    #endif /* ALLOW_AUTODIFF_TAMC */
333    
334    #ifndef ALLOW_OFFLINE
335    #ifdef ALLOW_DEBUG
336           IF ( debugLevel .GE. debLevB )
337         &    CALL DEBUG_CALL('DO_OCEANIC_PHYS',myThid)
338    #endif
339           CALL TIMER_START('DO_OCEANIC_PHYS     [FORWARD_STEP]',mythid)
340           CALL DO_OCEANIC_PHYS( myTime, myIter, myThid )
341           CALL TIMER_STOP ('DO_OCEANIC_PHYS     [FORWARD_STEP]',mythid)
342  #endif  #endif
         CALL TIMER_START('BLOCKING_EXCHANGES  [FORWARD_STEP]',myThid)  
         CALL DO_STAGGER_FIELDS_EXCHANGES( myTime, myIter, myThid )  
         CALL TIMER_STOP ('BLOCKING_EXCHANGES  [FORWARD_STEP]',myThid)  
343    
344  #ifdef ALLOW_SHAP_FILT  #ifdef ALLOW_GCHEM
345        IF (useSHAP_FILT .AND.  C     GCHEM package is an interface for any bio-geochemical or
346       &     staggerTimeStep .AND. shap_filt_TrStagg ) THEN  C     ecosystem model you would like to include.
347  #ifndef DISABLE_DEBUGMODE  C     If GCHEM_SEPARATE_FORCING is not defined, you are
348    C     responsible for computing tendency terms for passive
349    C     tracers and storing them on a 3DxNumPtracers-array called
350    C     gchemTendency in GCHEM_CALC_TENDENCY. This tendency is then added
351    C     to gPtr in ptracers_forcing later-on.
352    C     If GCHEM_SEPARATE_FORCING is defined, you are reponsible for
353    C     UPDATING ptracers directly in GCHEM_FORCING_SEP. This amounts
354    C     to a completely separate time step that you have to implement
355    C     yourself (Eulerian seems to be fine in most cases).
356    CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
357    C     CAVEAT: Up to now, when GCHEM is turned on the field ptracerForcingSurf,
358    C     which is needed for KPP is not set properly. ptracerForcingSurf must
359    C     be treated differently depending on whether GCHEM_SEPARATE_FORCING
360    C     is define or not. TBD.
361    CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
362           IF ( useGCHEM ) THEN
363    #ifdef ALLOW_DEBUG
364          IF ( debugLevel .GE. debLevB )          IF ( debugLevel .GE. debLevB )
365       &    CALL DEBUG_CALL('SHAP_FILT_APPLY_TS',myThid)       &       CALL DEBUG_CALL('GCHEM_CALC_TENDENCY',myThid)
 #endif  
         CALL TIMER_START('SHAP_FILT           [FORWARD_STEP]',myThid)  
         CALL SHAP_FILT_APPLY_TS(gT,gS,myTime+deltaT,myIter+1,myThid)  
         CALL TIMER_STOP ('SHAP_FILT           [FORWARD_STEP]',myThid)  
       ENDIF  
366  #endif  #endif
367  #ifdef ALLOW_ZONAL_FILT          CALL TIMER_START('GCHEM_CALC_TENDENCY [FORWARD_STEP]',myThid)
368        IF (useZONAL_FILT .AND.          CALL GCHEM_CALC_TENDENCY( myTime, myIter, myThid )
369       &     staggerTimeStep .AND. zonal_filt_TrStagg ) THEN          CALL TIMER_STOP ('GCHEM_CALC_TENDENCY [FORWARD_STEP]',myThid)
370  #ifndef DISABLE_DEBUGMODE         ENDIF
371    #endif /* ALLOW_GCHEM */
372    
373    #ifdef ALLOW_AUTODIFF_TAMC
374    cph needed to be moved here from do_oceanic_physics
375    cph to be visible down the road
376    c
377    CADJ STORE surfaceForcingS    = comlev1, key = ikey_dynamics
378    CADJ STORE surfaceForcingT    = comlev1, key = ikey_dynamics
379    CADJ STORE surfaceForcingTice = comlev1, key = ikey_dynamics
380    ctest(
381    CADJ STORE IVDConvCount       = comlev1, key = ikey_dynamics
382    ctest)
383    # ifdef ALLOW_PTRACERS
384    CADJ STORE surfaceForcingPtr  = comlev1, key = ikey_dynamics
385    # endif
386    c
387    # ifdef ALLOW_GMREDI
388    CADJ STORE Kwx                = comlev1, key = ikey_dynamics
389    CADJ STORE Kwy                = comlev1, key = ikey_dynamics
390    CADJ STORE Kwz                = comlev1, key = ikey_dynamics
391    #  ifdef GM_BOLUS_ADVEC
392    CADJ STORE GM_PsiX            = comlev1, key = ikey_dynamics
393    CADJ STORE GM_PsiY            = comlev1, key = ikey_dynamics
394    #  endif
395    # endif
396    c
397    # ifdef ALLOW_KPP
398    CADJ STORE KPPghat            = comlev1, key = ikey_dynamics
399    CADJ STORE KPPfrac            = comlev1, key = ikey_dynamics
400    CADJ STORE KPPdiffKzS         = comlev1, key = ikey_dynamics
401    CADJ STORE KPPdiffKzT         = comlev1, key = ikey_dynamics
402    # endif
403    c
404    # ifdef NONLIN_FRSURF
405    cph-test
406    CADJ STORE etaN               = comlev1, key = ikey_dynamics
407    CADJ STORE etaH               = comlev1, key = ikey_dynamics
408    CADJ STORE uVel               = comlev1, key = ikey_dynamics
409    CADJ STORE vVel               = comlev1, key = ikey_dynamics
410    #  ifdef ALLOW_CD_CODE
411    CADJ STORE etanm1             = comlev1, key = ikey_dynamics
412    #  endif
413    # endif
414    #endif /* ALLOW_AUTODIFF_TAMC */
415    
416          IF ( .NOT.staggerTimeStep ) THEN
417    #ifdef ALLOW_DEBUG
418          IF ( debugLevel .GE. debLevB )          IF ( debugLevel .GE. debLevB )
419       &    CALL DEBUG_CALL('ZONAL_FILT_APPLY_TS',myThid)       &    CALL DEBUG_CALL('THERMODYNAMICS',myThid)
420  #endif  #endif
421          CALL TIMER_START('ZONAL_FILT_APPLY    [FORWARD_STEP]',myThid)          CALL TIMER_START('THERMODYNAMICS      [FORWARD_STEP]',mythid)
422          CALL ZONAL_FILT_APPLY_TS( gT, gS, myThid )          CALL THERMODYNAMICS( myTime, myIter, myThid )
423          CALL TIMER_STOP ('ZONAL_FILT_APPLY    [FORWARD_STEP]',myThid)          CALL TIMER_STOP ('THERMODYNAMICS      [FORWARD_STEP]',mythid)
424    C--    if not staggerTimeStep: end
425        ENDIF        ENDIF
426  #endif    
427    #ifdef COMPONENT_MODULE
428           IF ( useCoupler .AND. .NOT.cpl_earlyExpImpCall ) THEN
429    C      Post coupling data that I export.
430    C      Read in coupling data that I import.
431             myItP1 = myIter + 1
432             CALL TIMER_START('CPL_EXPORT-IMPORT  [FORWARD_STEP]',myThid)
433             CALL CPL_EXPORT_MY_DATA(       myItP1, myTime, myThid )
434             CALL CPL_IMPORT_EXTERNAL_DATA( myItP1, myTime, myThid )
435             CALL TIMER_STOP ('CPL_EXPORT-IMPORT  [FORWARD_STEP]',myThid)
436    # ifndef ALLOW_AIM
437            IF ( useRealFreshWaterFlux ) THEN
438             CALL OCN_APPLY_IMPORT( .FALSE., myTime, myIter, myThid )
439            ENDIF
440    # endif
441           ENDIF
442    #endif /* COMPONENT_MODULE */
443    
444  C--   Step forward fields and calculate time tendency terms.  C--   Step forward fields and calculate time tendency terms.
445    #ifndef ALLOW_OFFLINE
446  #ifndef ALLOW_AUTODIFF_TAMC  #ifndef ALLOW_AUTODIFF_TAMC
447        IF ( momStepping ) THEN        IF ( momStepping ) THEN
448  #endif  #endif
449  #ifndef DISABLE_DEBUGMODE  #ifdef ALLOW_DEBUG
450          IF ( debugLevel .GE. debLevB )          IF ( debugLevel .GE. debLevB )
451       &    CALL DEBUG_CALL('DYNAMICS',myThid)       &    CALL DEBUG_CALL('DYNAMICS',myThid)
452  #endif  #endif
# Line 303  C--   Step forward fields and calculate Line 456  C--   Step forward fields and calculate
456  #ifndef ALLOW_AUTODIFF_TAMC  #ifndef ALLOW_AUTODIFF_TAMC
457        ENDIF        ENDIF
458  #endif  #endif
459    #endif
460    
461  #ifdef ALLOW_NONHYDROSTATIC  C--   Update time-counter
462  C--   Step forward W field in N-H algorithm        myIter = nIter0 + iLoop
463        IF ( momStepping .AND. nonHydrostatic ) THEN        myTime = startTime + deltaTClock * float(iLoop)
464  #ifndef DISABLE_DEBUGMODE  
465            IF ( debugLevel .GE. debLevB )  #ifdef ALLOW_MNC
466       &     CALL DEBUG_CALL('CALC_GW',myThid)  C     Update the default next iter for MNC
467  #endif        IF ( useMNC ) THEN
468           CALL TIMER_START('CALC_GW          [FORWARD_STEP]',myThid)           CALL MNC_CW_CITER_SETG( 1, 1, -1, myIter , myThid )
469           CALL CALC_GW(myThid)  
470           CALL TIMER_STOP ('CALC_GW          [FORWARD_STEP]',myThid)  C        TODO: Logic should be added here so that users can specify, on
471        ENDIF  C        a per-citer-group basis, when it is time to update the
472    C        "current" (and not just the "next") iteration
473    
474    C        TODO: the following is just a temporary band-aid (mostly, for
475    C        Baylor) until someone writes a routine that better handles time
476    C        boundaries such as weeks, months, years, etc.
477             IF ( mnc_filefreq .GT. 0 ) THEN
478               IF (DIFFERENT_MULTIPLE(mnc_filefreq,myTime,deltaTClock))
479         &          THEN
480                 CALL MNC_CW_CITER_SETG( 1, 1, myIter, -1 , myThid )
481               ENDIF
482             ENDIF
483           ENDIF
484  #endif  #endif
485    
486    C--   Update geometric factors:
487  #ifdef NONLIN_FRSURF  #ifdef NONLIN_FRSURF
488  C--   update hfacC,W,S and recip_hFac according to etaH(n+1) :  C-    update hfacC,W,S and recip_hFac according to etaH(n+1) :
489        IF ( nonlinFreeSurf.GT.0) THEN        IF ( nonlinFreeSurf.GT.0) THEN
490         IF ( select_rStar.GT.0 ) THEN         IF ( select_rStar.GT.0 ) THEN
491    # ifndef DISABLE_RSTAR_CODE
492          CALL TIMER_START('UPDATE_R_STAR      [FORWARD_STEP]',myThid)          CALL TIMER_START('UPDATE_R_STAR      [FORWARD_STEP]',myThid)
493          CALL UPDATE_R_STAR( myTime, myIter, myThid )          CALL UPDATE_R_STAR( myTime, myIter, myThid )
494          CALL TIMER_STOP ('UPDATE_R_STAR      [FORWARD_STEP]',myThid)          CALL TIMER_STOP ('UPDATE_R_STAR      [FORWARD_STEP]',myThid)
495    # endif /* DISABLE_RSTAR_CODE */
496         ELSE         ELSE
497    #ifdef ALLOW_AUTODIFF_TAMC
498    cph-test
499    CADJ STORE hFac_surfC, hFac_surfS, hFac_surfW
500    CADJ &     = comlev1, key = ikey_dynamics
501    #endif
502          CALL TIMER_START('UPDATE_SURF_DR     [FORWARD_STEP]',myThid)          CALL TIMER_START('UPDATE_SURF_DR     [FORWARD_STEP]',myThid)
503          CALL UPDATE_SURF_DR( myTime, myIter, myThid )          CALL UPDATE_SURF_DR( myTime, myIter, myThid )
504          CALL TIMER_STOP ('UPDATE_SURF_DR     [FORWARD_STEP]',myThid)          CALL TIMER_STOP ('UPDATE_SURF_DR     [FORWARD_STEP]',myThid)
# Line 336  C-    update also CG2D matrix (and preco Line 510  C-    update also CG2D matrix (and preco
510          CALL UPDATE_CG2D( myTime, myIter, myThid )          CALL UPDATE_CG2D( myTime, myIter, myThid )
511          CALL TIMER_STOP ('UPDATE_CG2D        [FORWARD_STEP]',myThid)          CALL TIMER_STOP ('UPDATE_CG2D        [FORWARD_STEP]',myThid)
512        ENDIF        ENDIF
513  #endif  #endif /* NONLIN_FRSURF */
514    
515  C--   Apply Filters to u*,v* before SOLVE_FOR_PRESSURE  C--   Apply Filters to u*,v* before SOLVE_FOR_PRESSURE
516  #ifdef ALLOW_SHAP_FILT  #ifdef ALLOW_SHAP_FILT
517        IF (useSHAP_FILT .AND. shap_filt_uvStar) THEN        IF (useSHAP_FILT .AND. shap_filt_uvStar) THEN
518          CALL TIMER_START('SHAP_FILT           [FORWARD_STEP]',myThid)          CALL TIMER_START('SHAP_FILT_UV        [FORWARD_STEP]',myThid)
519          IF (implicDiv2Dflow.LT.1.) THEN          IF (implicDiv2Dflow.LT.1.) THEN
520  C--   Explicit+Implicit part of the Barotropic Flow Divergence  C--   Explicit+Implicit part of the Barotropic Flow Divergence
521  C      => Filtering of uVel,vVel is necessary  C      => Filtering of uVel,vVel is necessary
522            CALL SHAP_FILT_APPLY_UV( uVel,vVel,            CALL SHAP_FILT_APPLY_UV( uVel,vVel,
523       &                             myTime+deltaT, myIter+1, myThid )       &                             myTime, myIter, myThid )
524          ENDIF          ENDIF
525          CALL SHAP_FILT_APPLY_UV( gU,gV,myTime+deltaT,myIter+1,myThid)          CALL SHAP_FILT_APPLY_UV( gU,gV,myTime,myIter,myThid)
526          CALL TIMER_STOP ('SHAP_FILT           [FORWARD_STEP]',myThid)          CALL TIMER_STOP ('SHAP_FILT_UV        [FORWARD_STEP]',myThid)
527        ENDIF        ENDIF
528  #endif  #endif
529  #ifdef ALLOW_ZONAL_FILT  #ifdef ALLOW_ZONAL_FILT
530        IF (useZONAL_FILT .AND. zonal_filt_uvStar) THEN        IF (useZONAL_FILT .AND. zonal_filt_uvStar) THEN
531          CALL TIMER_START('ZONAL_FILT_APPLY    [FORWARD_STEP]',myThid)          CALL TIMER_START('ZONAL_FILT_UV       [FORWARD_STEP]',myThid)
532          IF (implicDiv2Dflow.LT.1.) THEN          IF (implicDiv2Dflow.LT.1.) THEN
533  C--   Explicit+Implicit part of the Barotropic Flow Divergence  C--   Explicit+Implicit part of the Barotropic Flow Divergence
534  C      => Filtering of uVel,vVel is necessary  C      => Filtering of uVel,vVel is necessary
535            CALL ZONAL_FILT_APPLY_UV( uVel, vVel, myThid )            CALL ZONAL_FILT_APPLY_UV( uVel, vVel, myThid )
536          ENDIF          ENDIF
537          CALL ZONAL_FILT_APPLY_UV( gU, gV, myThid )          CALL ZONAL_FILT_APPLY_UV( gU, gV, myThid )
538          CALL TIMER_STOP ('ZONAL_FILT_APPLY    [FORWARD_STEP]',myThid)          CALL TIMER_STOP ('ZONAL_FILT_UV       [FORWARD_STEP]',myThid)
539        ENDIF        ENDIF
540  #endif    #endif  
541    
542  C--   Solve elliptic equation(s).  C--   Solve elliptic equation(s).
543  C     Two-dimensional only for conventional hydrostatic or  C     Two-dimensional only for conventional hydrostatic or
544  C     three-dimensional for non-hydrostatic and/or IGW scheme.  C     three-dimensional for non-hydrostatic and/or IGW scheme.
545    #ifndef ALLOW_OFFLINE
546        IF ( momStepping ) THEN        IF ( momStepping ) THEN
547        CALL TIMER_START('SOLVE_FOR_PRESSURE  [FORWARD_STEP]',myThid)          CALL TIMER_START('SOLVE_FOR_PRESSURE  [FORWARD_STEP]',myThid)
548        CALL SOLVE_FOR_PRESSURE(myTime, myIter, myThid)          CALL SOLVE_FOR_PRESSURE(myTime, myIter, myThid)
549        CALL TIMER_STOP ('SOLVE_FOR_PRESSURE  [FORWARD_STEP]',myThid)          CALL TIMER_STOP ('SOLVE_FOR_PRESSURE  [FORWARD_STEP]',myThid)
550        ENDIF        ENDIF
551    #endif
552    
553    C--   Correct divergence in flow field and cycle time-stepping momentum
554    c     IF ( momStepping ) THEN
555    #ifndef ALLOW_OFFLINE
556            CALL TIMER_START('MOM_CORRECTION_STEP [FORWARD_STEP]',myThid)
557            CALL MOMENTUM_CORRECTION_STEP(myTime, myIter, myThid)
558            CALL TIMER_STOP ('MOM_CORRECTION_STEP [FORWARD_STEP]',myThid)
559    #endif
560    c     ENDIF
561    
562    #ifdef EXACT_CONSERV
563          IF (exactConserv) THEN
564    C--   Update etaH(n+1) :
565            CALL TIMER_START('UPDATE_ETAH         [FORWARD_STEP]',mythid)
566            CALL UPDATE_ETAH( myTime, myIter, myThid )
567            CALL TIMER_STOP ('UPDATE_ETAH         [FORWARD_STEP]',mythid)
568          ENDIF
569    #endif /* EXACT_CONSERV */
570    
571    #ifdef NONLIN_FRSURF
572          IF ( select_rStar.NE.0 ) THEN
573    # ifndef DISABLE_RSTAR_CODE
574    C--   r* : compute the future level thickness according to etaH(n+1)
575            CALL TIMER_START('CALC_R_STAR       [FORWARD_STEP]',mythid)
576            CALL CALC_R_STAR(etaH, myTime, myIter, myThid )
577            CALL TIMER_STOP ('CALC_R_STAR       [FORWARD_STEP]',mythid)
578    # endif /* DISABLE_RSTAR_CODE */
579          ELSEIF ( nonlinFreeSurf.GT.0) THEN
580    C--   compute the future surface level thickness according to etaH(n+1)
581    #ifdef ALLOW_AUTODIFF_TAMC
582    CADJ STORE etaH          = comlev1, key = ikey_dynamics
583    #endif
584            CALL TIMER_START('CALC_SURF_DR      [FORWARD_STEP]',mythid)
585            CALL CALC_SURF_DR(etaH, myTime, myIter, myThid )
586            CALL TIMER_STOP ('CALC_SURF_DR      [FORWARD_STEP]',mythid)
587          ENDIF
588    #endif /* NONLIN_FRSURF */
589    
590    C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
591          IF ( staggerTimeStep ) THEN
592    C--   do exchanges of U,V (needed for multiDim) when using stagger time-step :
593    #ifdef ALLOW_DEBUG
594            IF ( debugLevel .GE. debLevB )
595         &    CALL DEBUG_CALL('DO_STAGGER_FIELDS_EXCH.',myThid)
596    #endif
597            CALL TIMER_START('BLOCKING_EXCHANGES  [FORWARD_STEP]',myThid)
598            CALL DO_STAGGER_FIELDS_EXCHANGES( myTime, myIter, myThid )
599            CALL TIMER_STOP ('BLOCKING_EXCHANGES  [FORWARD_STEP]',myThid)
600    
601    C--   State-variables diagnostics
602           IF ( usediagnostics ) THEN
603            CALL TIMER_START('DO_STATEVARS_DIAGS  [FORWARD_STEP]',myThid)
604            CALL DO_STATEVARS_DIAGS( myTime, 1, myIter, myThid )
605            CALL TIMER_STOP ('DO_STATEVARS_DIAGS  [FORWARD_STEP]',myThid)
606           ENDIF
607    
608    #ifdef ALLOW_DEBUG
609            IF ( debugLevel .GE. debLevB )
610         &    CALL DEBUG_CALL('THERMODYNAMICS',myThid)
611    #endif
612            CALL TIMER_START('THERMODYNAMICS      [FORWARD_STEP]',mythid)
613            CALL THERMODYNAMICS( myTime, myIter, myThid )
614            CALL TIMER_STOP ('THERMODYNAMICS      [FORWARD_STEP]',mythid)
615    
616    C--    if staggerTimeStep: end
617          ENDIF
618    C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
619    
620  #ifdef ALLOW_AUTODIFF_TAMC  #ifdef ALLOW_AUTODIFF_TAMC
621  cph This is needed because convective_adjustment calls  cph This is needed because convective_adjustment calls
622  cph find_rho which may use pressure()  cph find_rho which may use pressure()
623  CADJ STORE totphihyd  = comlev1, key = ikey_dynamics  CADJ STORE totphihyd  = comlev1, key = ikey_dynamics
624  #endif  #endif
625  C--   Correct divergence in flow field and cycle time-stepping  C--   Cycle time-stepping Tracers arrays (T,S,+pTracers)
626  C     arrays (for all fields) ; update time-counter          CALL TIMER_START('TRC_CORRECTION_STEP [FORWARD_STEP]',myThid)
627        myIter = nIter0 + iLoop          CALL TRACERS_CORRECTION_STEP(myTime, myIter, myThid)
628        myTime = startTime + deltaTClock * float(iLoop)          CALL TIMER_STOP ('TRC_CORRECTION_STEP [FORWARD_STEP]',myThid)
629        CALL TIMER_START('THE_CORRECTION_STEP [FORWARD_STEP]',myThid)  
630        CALL THE_CORRECTION_STEP(myTime, myIter, myThid)  #ifdef ALLOW_GCHEM
631        CALL TIMER_STOP ('THE_CORRECTION_STEP [FORWARD_STEP]',myThid)  C     Add separate timestepping of chemical/biological/forcing
632    C     of ptracers here in GCHEM_FORCING_SEP
633            IF ( useGCHEM ) THEN
634    #ifdef ALLOW_DEBUG
635             IF ( debugLevel .GE. debLevB )
636         &        CALL DEBUG_CALL('GCHEM_FORCING_SEP',myThid)
637    #endif /* ALLOW_DEBUG */
638             CALL TIMER_START('GCHEM_FORCING_SEP  [FORWARD_STEP]',myThid)
639             CALL GCHEM_FORCING_SEP( myTime,myIter,myThid )
640             CALL TIMER_STOP ('GCHEM_FORCING_SEP  [FORWARD_STEP]',myThid)
641            ENDIF  
642    #endif /* ALLOW_GCHEM */
643    
644  C--   Do "blocking" sends and receives for tendency "overlap" terms  C--   Do "blocking" sends and receives for tendency "overlap" terms
645  c     CALL TIMER_START('BLOCKING_EXCHANGES  [FORWARD_STEP]',myThid)  c     CALL TIMER_START('BLOCKING_EXCHANGES  [FORWARD_STEP]',myThid)
# Line 397  C--   Do "blocking" sends and receives f Line 651  C--   Do "blocking" sends and receives f
651        CALL DO_FIELDS_BLOCKING_EXCHANGES( myThid )        CALL DO_FIELDS_BLOCKING_EXCHANGES( myThid )
652        CALL TIMER_STOP ('BLOCKING_EXCHANGES  [FORWARD_STEP]',myThid)        CALL TIMER_STOP ('BLOCKING_EXCHANGES  [FORWARD_STEP]',myThid)
653    
 cswdptr -- add for seperate timestepping of chemical/biological/forcing  
 cswdptr    of ptracers ---  
 #ifdef ALLOW_GCHEM  
 #ifdef PTRACERS_SEPARATE_FORCING  
         call GCHEM_FORCING_SEP( myTime,myIter,myThid )  
 #endif  
 #endif  
 cswdptr -- end add ---  
654    
655    C AMM
656    #ifdef ALLOW_GRIDALT
657            if (useGRIDALT) then
658             CALL GRIDALT_UPDATE(myThid)
659            endif
660    #endif
661    C AMM
662    
663    C AMM
664    #ifdef ALLOW_FIZHI
665            if( useFIZHI) then
666             CALL TIMER_START('FIZHI               [FORWARD_STEP]',mythid)
667             CALL STEP_FIZHI_CORR ( myTime, myIter, myThid )
668             CALL TIMER_STOP('FIZHI               [FORWARD_STEP]',mythid)
669            endif
670    #endif
671    C AMM
672    
673  #ifdef ALLOW_FLT  #ifdef ALLOW_FLT
674  C--   Calculate float trajectories  C--   Calculate float trajectories
# Line 416  C--   Calculate float trajectories Line 679  C--   Calculate float trajectories
679        ENDIF        ENDIF
680  #endif  #endif
681    
682  #ifndef EXCLUDE_MONITOR  C--   State-variables time-averaging
683          CALL TIMER_START('DO_STATEVARS_TAVE   [FORWARD_STEP]',myThid)
684          CALL DO_STATEVARS_TAVE( myTime, myIter, myThid )
685          CALL TIMER_STOP ('DO_STATEVARS_TAVE   [FORWARD_STEP]',myThid)
686    
687    #ifndef ALLOW_OFFLINE
688    #ifdef ALLOW_MONITOR
689  C--   Check status of solution (statistics, cfl, etc...)  C--   Check status of solution (statistics, cfl, etc...)
690        CALL TIMER_START('MONITOR             [FORWARD_STEP]',myThid)        CALL TIMER_START('MONITOR             [FORWARD_STEP]',myThid)
691        CALL MONITOR( myIter, myTime, myThid )        CALL MONITOR( myIter, myTime, myThid )
692        CALL TIMER_STOP ('MONITOR             [FORWARD_STEP]',myThid)        CALL TIMER_STOP ('MONITOR             [FORWARD_STEP]',myThid)
693  #endif /* EXCLUDE_MONITOR */  #endif /* ALLOW_MONITOR */
694    #endif
695    
696    #ifdef ALLOW_COST
697    C--     compare model with data and compute cost function
698    C--     this is done after exchanges to allow interpolation
699          CALL TIMER_START('COST_TILE           [FORWARD_STEP]',myThid)
700          CALL COST_TILE  ( mytime, myiter, myThid )
701          CALL TIMER_STOP ('COST_TILE           [FORWARD_STEP]',myThid)
702    #endif
703    
704  C--   Do IO if needed.  C--   Do IO if needed.
705    #ifdef ALLOW_OFFLINE
706          CALL TIMER_START('OFFLINE_MODEL_IO    [FORWARD_STEP]',myThid)
707          CALL OFFLINE_MODEL_IO( myTime, myIter, myThid )
708          CALL TIMER_STOP ('OFFLINE_MODEL_IO    [FORWARD_STEP]',myThid)
709    #else
710        CALL TIMER_START('DO_THE_MODEL_IO     [FORWARD_STEP]',myThid)        CALL TIMER_START('DO_THE_MODEL_IO     [FORWARD_STEP]',myThid)
711        CALL DO_THE_MODEL_IO( myTime, myIter, myThid )        CALL DO_THE_MODEL_IO( myTime, myIter, myThid )
712        CALL TIMER_STOP ('DO_THE_MODEL_IO     [FORWARD_STEP]',myThid)        CALL TIMER_STOP ('DO_THE_MODEL_IO     [FORWARD_STEP]',myThid)
713    #endif
714    
715    #ifdef HAVE_SIGREG
716          IF ( useSIGREG ) THEN
717            IF ( i_got_signal .GT. 0 ) THEN
718              CALL PACKAGES_WRITE_PICKUP(
719         I         .TRUE., myTime, myIter, myThid )
720    #ifndef ALLOW_OFFLINE
721              CALL WRITE_CHECKPOINT(
722         I         .TRUE., myTime, myIter, myThid )  
723    #endif
724              STOP 'Checkpoint completed -- killed by signal handler'
725            ENDIF
726          ENDIF
727    #endif
728    
729  C--   Save state for restarts  C--   Save state for restarts
 C     Note:    (jmc: is it still the case after ckp35 ?)  
 C     =====  
 C     Because of the ordering of the timestepping code and  
 C     tendency term code at end of loop model arrays hold  
 C     U,V,T,S  at "time-level" N but gu, gv, gs, gt, guNM1,...  
 C     at "time-level" N+1/2 (guNM1 at "time-level" N+1/2 is  
 C     gu at "time-level" N-1/2) and etaN at "time-level" N+1/2.  
 C      where N = I+timeLevBase-1  
 C     Thus a checkpoint contains U.0000000000, GU.0000000001 and  
 C     etaN.0000000001 in the indexing scheme used for the model  
 C     "state" files. This example is referred to as a checkpoint  
 C     at time level 1  
730        CALL TIMER_START('WRITE_CHECKPOINT    [FORWARD_STEP]',myThid)        CALL TIMER_START('WRITE_CHECKPOINT    [FORWARD_STEP]',myThid)
731          CALL PACKAGES_WRITE_PICKUP(
732         I               .FALSE., myTime, myIter, myThid )
733    #ifndef ALLOW_OFFLINE
734        CALL WRITE_CHECKPOINT(        CALL WRITE_CHECKPOINT(
735       &        .FALSE., myTime, myIter, myThid )       I               .FALSE., myTime, myIter, myThid )  
736    #endif
737        CALL TIMER_STOP ('WRITE_CHECKPOINT    [FORWARD_STEP]',myThid)        CALL TIMER_STOP ('WRITE_CHECKPOINT    [FORWARD_STEP]',myThid)
738    
739  #ifndef DISABLE_DEBUGMODE  #ifdef ALLOW_DEBUG
740        IF ( debugLevel .GE. debLevB )        IF ( debugLevel .GE. debLevB )
741       &    CALL DEBUG_LEAVE('FORWARD_STEP',myThid)       &    CALL DEBUG_LEAVE('FORWARD_STEP',myThid)
742  #endif  #endif
743    
744          RETURN
745        END        END
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