| 1 |
|
| 2 |
#include "CPP_OPTIONS.h" |
| 3 |
|
| 4 |
subroutine forward_step( iloop, mytime, myiter, mythid ) |
| 5 |
|
| 6 |
c ================================================================== |
| 7 |
c SUBROUTINE forward_step |
| 8 |
c ================================================================== |
| 9 |
c |
| 10 |
c o Run the ocean model and evaluate the specified cost function. |
| 11 |
c |
| 12 |
c *the_main_loop* is the toplevel routine for the Tangent Linear and |
| 13 |
c Adjoint Model Compiler (TAMC). For this purpose the initialization |
| 14 |
c of the model was split into two parts. Those parameters that do |
| 15 |
c not depend on a specific model run are set in *initialise_fixed*, |
| 16 |
c whereas those that do depend on the specific realization are |
| 17 |
c initialized in *initialise_varia*. |
| 18 |
c This routine is to be used in conjuction with the MITgcmuv |
| 19 |
c checkpoint 37. |
| 20 |
c |
| 21 |
c ================================================================== |
| 22 |
c SUBROUTINE forward_step |
| 23 |
c ================================================================== |
| 24 |
|
| 25 |
implicit none |
| 26 |
|
| 27 |
c == global variables == |
| 28 |
|
| 29 |
#include "SIZE.h" |
| 30 |
#include "EEPARAMS.h" |
| 31 |
#include "PARAMS.h" |
| 32 |
#include "DYNVARS.h" |
| 33 |
#include "FFIELDS.h" |
| 34 |
#include "TR1.h" |
| 35 |
|
| 36 |
#ifdef ALLOW_NONHYDROSTATIC |
| 37 |
#include "CG3D.h" |
| 38 |
#endif |
| 39 |
|
| 40 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 41 |
#include "tamc.h" |
| 42 |
#include "ctrl.h" |
| 43 |
#include "ctrl_dummy.h" |
| 44 |
#include "cost.h" |
| 45 |
#endif |
| 46 |
|
| 47 |
c == routine arguments == |
| 48 |
c note: under the multi-threaded model myiter and |
| 49 |
c mytime are local variables passed around as routine |
| 50 |
c arguments. Although this is fiddly it saves the need to |
| 51 |
c impose additional synchronisation points when they are |
| 52 |
c updated. |
| 53 |
c myiter - iteration counter for this thread |
| 54 |
c mytime - time counter for this thread |
| 55 |
c mythid - thread number for this instance of the routine. |
| 56 |
integer iloop |
| 57 |
integer mythid |
| 58 |
integer myiter |
| 59 |
_RL mytime |
| 60 |
|
| 61 |
c == local variables == |
| 62 |
|
| 63 |
c-- == end of interface == |
| 64 |
|
| 65 |
c-- >>> Loop body start <<< |
| 66 |
|
| 67 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 68 |
c-- Set the model iteration counter and the model time. |
| 69 |
myiter = nIter0 + (iloop-1) |
| 70 |
mytime = startTime + float(iloop-1)*deltaTclock |
| 71 |
|
| 72 |
c Include call to a dummy routine. Its adjoint will be |
| 73 |
c called at the proper place in the adjoint code. |
| 74 |
c The adjoint routine will print out adjoint values |
| 75 |
c if requested. The location of the call is important, |
| 76 |
c it has to be after the adjoint of the exchanges |
| 77 |
c (DO_GTERM_BLOCKING_EXCHANGES). |
| 78 |
call dummy_in_stepping( myTime, myIter, myThid ) |
| 79 |
#endif |
| 80 |
|
| 81 |
c-- Load forcing/external data fields. |
| 82 |
#ifdef INCLUDE_EXTERNAL_FORCING_PACKAGE |
| 83 |
c NOTE, that although the exf package is part of the |
| 84 |
c distribution, it is not currently maintained, i.e. |
| 85 |
c exf is disabled by default in genmake. |
| 86 |
CALL EXF_GETFORCING( mytime, myiter, mythid ) |
| 87 |
#else |
| 88 |
CALL TIMER_START('EXTERNAL_FIELDS_LOAD[THE_MAIN_LOOP]',mythid) |
| 89 |
CALL EXTERNAL_FIELDS_LOAD( mytime, myiter, mythid ) |
| 90 |
CALL TIMER_STOP ('EXTERNAL_FIELDS_LOAD[THE_MAIN_LOOP]',mythid) |
| 91 |
#endif |
| 92 |
|
| 93 |
c-- Step forward fields and calculate time tendency terms. |
| 94 |
CALL TIMER_START('DYNAMICS [THE_MAIN_LOOP]',mythid) |
| 95 |
CALL DYNAMICS( myTime, myIter, myThid ) |
| 96 |
CALL TIMER_STOP ('DYNAMICS [THE_MAIN_LOOP]',mythid) |
| 97 |
|
| 98 |
#ifndef ALLOW_AUTODIFF_TAMC |
| 99 |
|
| 100 |
#ifdef ALLOW_NONHYDROSTATIC |
| 101 |
C-- Step forward W field in N-H algorithm |
| 102 |
IF ( nonHydrostatic ) THEN |
| 103 |
CALL TIMER_START('CALC_GW [THE_MAIN_LOOP]',myThid) |
| 104 |
CALL CALC_GW(myThid) |
| 105 |
CALL TIMER_STOP ('CALC_GW [THE_MAIN_LOOP]',myThid) |
| 106 |
ENDIF |
| 107 |
#endif |
| 108 |
|
| 109 |
#ifdef ALLOW_SHAP_FILT |
| 110 |
C-- Step forward all tiles, filter and exchange. |
| 111 |
CALL TIMER_START('SHAP_FILT [THE_MAIN_LOOP]',myThid) |
| 112 |
CALL SHAP_FILT_APPLY( |
| 113 |
I gUnm1, gVnm1, gTnm1, gSnm1, |
| 114 |
I myTime, myIter, myThid ) |
| 115 |
IF (implicDiv2Dflow.LT.1.) THEN |
| 116 |
C-- Explicit+Implicit part of the Barotropic Flow Divergence |
| 117 |
C => Filtering of uVel,vVel is necessary |
| 118 |
CALL SHAP_FILT_UV( uVel, vVel, myTime, myThid ) |
| 119 |
ENDIF |
| 120 |
CALL TIMER_STOP ('SHAP_FILT [THE_MAIN_LOOP]',myThid) |
| 121 |
#endif |
| 122 |
|
| 123 |
#ifdef ALLOW_ZONAL_FILT |
| 124 |
IF (zonal_filt_lat.LT.90.) THEN |
| 125 |
CALL TIMER_START('ZONAL_FILT_APPLY [THE_MAIN_LOOP]',myThid) |
| 126 |
CALL ZONAL_FILT_APPLY( |
| 127 |
U gUnm1, gVnm1, gTnm1, gSnm1, |
| 128 |
I myThid ) |
| 129 |
CALL TIMER_STOP ('ZONAL_FILT_APPLY [THE_MAIN_LOOP]',myThid) |
| 130 |
ENDIF |
| 131 |
#endif |
| 132 |
|
| 133 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 134 |
|
| 135 |
C-- Solve elliptic equation(s). |
| 136 |
C Two-dimensional only for conventional hydrostatic or |
| 137 |
C three-dimensional for non-hydrostatic and/or IGW scheme. |
| 138 |
CALL TIMER_START('SOLVE_FOR_PRESSURE [THE_MAIN_LOOP]',myThid) |
| 139 |
CALL SOLVE_FOR_PRESSURE( myThid ) |
| 140 |
CALL TIMER_STOP ('SOLVE_FOR_PRESSURE [THE_MAIN_LOOP]',myThid) |
| 141 |
|
| 142 |
C-- Correct divergence in flow field and cycle time-stepping |
| 143 |
C arrays (for all fields) ; update time-counter |
| 144 |
myIter = nIter0 + iLoop |
| 145 |
myTime = startTime + deltaTClock * float(iLoop) |
| 146 |
CALL TIMER_START('THE_CORRECTION_STEP [THE_MAIN_LOOP]',myThid) |
| 147 |
CALL THE_CORRECTION_STEP(myTime, myIter, myThid) |
| 148 |
CALL TIMER_STOP ('THE_CORRECTION_STEP [THE_MAIN_LOOP]',myThid) |
| 149 |
|
| 150 |
C-- Do "blocking" sends and receives for tendency "overlap" terms |
| 151 |
c CALL TIMER_START('BLOCKING_EXCHANGES [THE_MAIN_LOOP]',myThid) |
| 152 |
c CALL DO_GTERM_BLOCKING_EXCHANGES( myThid ) |
| 153 |
c CALL TIMER_STOP ('BLOCKING_EXCHANGES [THE_MAIN_LOOP]',myThid) |
| 154 |
|
| 155 |
C-- Do "blocking" sends and receives for field "overlap" terms |
| 156 |
CALL TIMER_START('BLOCKING_EXCHANGES [THE_MAIN_LOOP]',myThid) |
| 157 |
CALL DO_FIELDS_BLOCKING_EXCHANGES( myThid ) |
| 158 |
CALL TIMER_STOP ('BLOCKING_EXCHANGES [THE_MAIN_LOOP]',myThid) |
| 159 |
|
| 160 |
#ifndef EXCLUDE_MONITOR |
| 161 |
C-- Check status of solution (statistics, cfl, etc...) |
| 162 |
CALL MONITOR( myIter, myTime, myThid ) |
| 163 |
#endif /* EXCLUDE_MONITOR */ |
| 164 |
|
| 165 |
#ifndef ALLOW_AUTODIFF_TAMC |
| 166 |
C-- Do IO if needed. |
| 167 |
CALL TIMER_START('DO_THE_MODEL_IO [THE_MAIN_LOOP]',myThid) |
| 168 |
CALL DO_THE_MODEL_IO( myTime, myIter, myThid ) |
| 169 |
CALL TIMER_STOP ('DO_THE_MODEL_IO [THE_MAIN_LOOP]',myThid) |
| 170 |
|
| 171 |
C-- Save state for restarts |
| 172 |
C Note: (jmc: is it still the case after ckp35 ?) |
| 173 |
C ===== |
| 174 |
C Because of the ordering of the timestepping code and |
| 175 |
C tendency term code at end of loop model arrays hold |
| 176 |
C U,V,T,S at "time-level" N but gu, gv, gs, gt, guNM1,... |
| 177 |
C at "time-level" N+1/2 (guNM1 at "time-level" N+1/2 is |
| 178 |
C gu at "time-level" N-1/2) and etaN at "time-level" N+1/2. |
| 179 |
C where N = I+timeLevBase-1 |
| 180 |
C Thus a checkpoint contains U.0000000000, GU.0000000001 and |
| 181 |
C etaN.0000000001 in the indexing scheme used for the model |
| 182 |
C "state" files. This example is referred to as a checkpoint |
| 183 |
C at time level 1 |
| 184 |
CALL TIMER_START('WRITE_CHECKPOINT [THE_MAIN_LOOP]',myThid) |
| 185 |
CALL WRITE_CHECKPOINT( |
| 186 |
& .FALSE., myTime, myIter, myThid ) |
| 187 |
CALL TIMER_STOP ('WRITE_CHECKPOINT [THE_MAIN_LOOP]',myThid) |
| 188 |
|
| 189 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
| 190 |
|
| 191 |
c-- >>> Loop body end <<< |
| 192 |
|
| 193 |
END |
Parent Directory
| 
Revision Log
| 
Revision Graph