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C $Header: /u/gcmpack/models/MITgcmUV/model/src/the_main_loop.F,v 1.6 2001/04/10 22:35:25 heimbach Exp $ |
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|
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#include "CPP_OPTIONS.h" |
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|
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|
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subroutine the_main_loop( mytime, myiter, mythid ) |
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|
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c ================================================================== |
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c SUBROUTINE the_main_loop |
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c ================================================================== |
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c |
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c o Run the ocean model and evaluate the specified cost function. |
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c |
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c *the_main_loop* is the toplevel routine for the Tangent Linear and |
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c Adjoint Model Compiler (TAMC). For this purpose the initialization |
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c of the model was split into two parts. Those parameters that do |
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c not depend on a specific model run are set in *initialise_fixed*, |
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c whereas those that do depend on the specific realization are |
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c initialized in *initialise_varia*. |
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c This routine is to be used in conjuction with the MITgcmuv |
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c checkpoint 37. |
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c |
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c ================================================================== |
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c SUBROUTINE the_main_loop |
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c ================================================================== |
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|
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implicit none |
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|
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c == global variables == |
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|
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#include "SIZE.h" |
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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#include "DYNVARS.h" |
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#include "FFIELDS.h" |
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|
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#ifdef ALLOW_NONHYDROSTATIC |
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#include "CG3D.h" |
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#endif |
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|
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#ifdef ALLOW_AUTODIFF_TAMC |
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#include "tamc.h" |
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#include "ctrl.h" |
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#include "ctrl_dummy.h" |
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#include "cost.h" |
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#endif |
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|
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c == routine arguments == |
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c note: under the multi-threaded model myiter and |
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c mytime are local variables passed around as routine |
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c arguments. Although this is fiddly it saves the need to |
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c impose additional synchronisation points when they are |
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c updated. |
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c myiter - iteration counter for this thread |
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c mytime - time counter for this thread |
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c mythid - thread number for this instance of the routine. |
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integer mythid |
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integer myiter |
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_RL mytime |
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|
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c == local variables == |
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|
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integer iloop |
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|
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#ifdef ALLOW_TAMC_CHECKPOINTING |
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integer ilev_1 |
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integer ilev_2 |
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integer ilev_3 |
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integer max_lev2 |
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integer max_lev3 |
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#endif |
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|
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c-- == end of interface == |
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|
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#ifdef ALLOW_AUTODIFF_TAMC |
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c-- Initialize storage for the cost function evaluation. |
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CADJ INIT dummytape = common, 1 |
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c-- Initialize storage for the outermost loop. |
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CADJ INIT tapelev3 = USER |
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#ifdef ALLOW_TAMC_CHECKPOINTING |
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ikey_dynamics = 1 |
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#endif |
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#endif |
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|
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CALL TIMER_START('ADJOINT SPIN-UP', mythid) |
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|
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C-- Set initial conditions (variable arrays) |
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CALL TIMER_START('INITIALISE_VARIA [ADJOINT SPIN-UP]', mythid) |
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CALL INITIALISE_VARIA( mythid ) |
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CALL TIMER_STOP ('INITIALISE_VARIA [ADJOINT SPIN-UP]', mythid) |
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|
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#ifndef ALLOW_AUTODIFF_TAMC |
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c-- Dump for start state. |
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CALL TIMER_START('I/O (WRITE) [ADJOINT SPIN-UP]', mythid) |
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CALL WRITE_STATE( mytime, myiter, mythid ) |
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CALL TIMER_STOP ('I/O (WRITE) [ADJOINT SPIN-UP]', mythid) |
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#endif |
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|
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#ifdef ALLOW_COST_TEST |
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c-- Add control vector for forcing and parameter fields |
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CALL CTRL_MAP_FORCING (mythid) |
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#endif |
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|
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CALL TIMER_STOP ('ADJOINT SPIN-UP', mythid) |
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_BARRIER |
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|
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c-- Do the model integration. |
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call timer_start('ADJOINT MAIN LOOP',mythid) |
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|
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c >>>>>>>>>>>>>>>>>>>>>>>>>>> LOOP <<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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c >>>>>>>>>>>>>>>>>>>>>>>>>>> STARTS <<<<<<<<<<<<<<<<<<<<<<<<<<<< |
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|
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#ifdef ALLOW_AUTODIFF_TAMC |
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#ifdef ALLOW_TAMC_CHECKPOINTING |
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c-- Implement a three level checkpointing. For a two level |
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c-- checkpointing delete the middle loop; for n levels (n > 3) |
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c-- insert more loops. |
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|
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c-- Check the choice of the checkpointing parameters in relation |
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c-- to nTimeSteps: (nchklev_1*nchklev_2*nchklev_3 .ge. nTimeSteps) |
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if (nchklev_1*nchklev_2*nchklev_3 .lt. nTimeSteps) then |
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print* |
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print*, ' the_main_loop: TAMC checkpointing parameters' |
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print*, ' nchklev_1*nchklev_2*nchklev_3 = ', |
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& nchklev_1*nchklev_2*nchklev_3 |
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print*, ' are not consistent with nTimeSteps = ', |
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& nTimeSteps |
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stop ' ... stopped in the_main_loop.' |
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endif |
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max_lev3=nTimeSteps/(nchklev_1*nchklev_2)+1 |
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max_lev2=nTimeSteps/nchklev_1+1 |
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|
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do ilev_3 = 1,nchklev_3 |
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if(ilev_3.le.max_lev3) then |
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CADJ STORE gsnm1 = tapelev3, key = ilev_3 |
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CADJ STORE gtnm1 = tapelev3, key = ilev_3 |
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CADJ STORE gunm1 = tapelev3, key = ilev_3 |
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CADJ STORE gvnm1 = tapelev3, key = ilev_3 |
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CADJ STORE theta = tapelev3, key = ilev_3 |
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CADJ STORE salt = tapelev3, key = ilev_3 |
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CADJ STORE uvel = tapelev3, key = ilev_3 |
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CADJ STORE vvel = tapelev3, key = ilev_3 |
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CADJ STORE wvel = tapelev3, key = ilev_3 |
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CADJ STORE etan = tapelev3, key = ilev_3 |
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CADJ STORE etanm1 = tapelev3, key = ilev_3 |
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#ifdef INCLUDE_CD_CODE |
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CADJ STORE uveld = tapelev3, key = ilev_3 |
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CADJ STORE vveld = tapelev3, key = ilev_3 |
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CADJ STORE unm1 = tapelev3, key = ilev_3 |
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CADJ STORE vnm1 = tapelev3, key = ilev_3 |
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#endif |
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|
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c-- Initialise storage for the middle loop. |
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CADJ INIT tapelev2 = USER |
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|
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do ilev_2 = 1,nchklev_2 |
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if(ilev_2.le.max_lev2) then |
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CADJ STORE gsnm1 = tapelev2, key = ilev_2 |
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CADJ STORE gtnm1 = tapelev2, key = ilev_2 |
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CADJ STORE gunm1 = tapelev2, key = ilev_2 |
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CADJ STORE gvnm1 = tapelev2, key = ilev_2 |
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CADJ STORE theta = tapelev2, key = ilev_2 |
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CADJ STORE salt = tapelev2, key = ilev_2 |
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CADJ STORE uvel = tapelev2, key = ilev_2 |
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CADJ STORE vvel = tapelev2, key = ilev_2 |
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CADJ STORE wvel = tapelev2, key = ilev_2 |
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CADJ STORE etan = tapelev2, key = ilev_2 |
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CADJ STORE etanm1 = tapelev2, key = ilev_2 |
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#ifdef INCLUDE_CD_CODE |
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CADJ STORE uveld = tapelev2, key = ilev_2 |
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CADJ STORE vveld = tapelev2, key = ilev_2 |
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CADJ STORE unm1 = tapelev2, key = ilev_2 |
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CADJ STORE vnm1 = tapelev2, key = ilev_2 |
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#endif |
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|
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c-- Initialize storage for the innermost loop. |
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c-- Always check common block sizes for the checkpointing! |
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CADJ INIT comlev1 = COMMON,nchklev_1 |
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CADJ INIT comlev1_bibj = COMMON,nchklev_1*nsx*nsy*nthreads_chkpt |
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CADJ INIT comlev1_bibj_k = COMMON,nchklev_1*nsx*nsy*nr*nthreads_chkpt |
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cphCADJ INIT comlev1_impl = COMMON,nchklev_1*nsx*nsy*6 |
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CADJ INIT comlev1_kpp = COMMON,nchklev_1*nsx*nsy |
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|
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C-- RG replace 2 by max of num_v_smooth_Ri |
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CADJ INIT comlev1_kpp_sm = COMMON,nchklev_1*nsx*nsy*2 |
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|
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do ilev_1 = 1,nchklev_1 |
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|
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c-- The if-statement below introduces a some flexibility in the |
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c-- choice of the 3-tupel ( nchklev_1, nchklev_2, nchklev_3 ). |
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c-- |
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c-- Requirement: nchklev_1*nchklev_2*nchklev_3 .ge. nTimeSteps . |
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|
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iloop = (ilev_3 - 1)*nchklev_2*nchklev_1 + |
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& (ilev_2 - 1)*nchklev_1 + ilev_1 |
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|
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if ( iloop .le. nTimeSteps ) then |
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#else /* ALLOW_TAMC_CHECKPOINTING undefined */ |
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c-- Initialise storage for reference trajectory without TAMC check- |
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c-- pointing. |
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CADJ INIT history = USER |
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CADJ INIT comlev1_bibj = COMMON,nchklev_0*nsx*nsy*nthreads_chkpt |
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CADJ INIT comlev1_bibj_k = COMMON,nchklev_0*nsx*nsy*nr*nthreads_chkpt |
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CADJ INIT comlev1_impl = COMMON,nchklev_0*nsx*nsy*6 |
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CADJ INIT comlev1_impl_k = COMMON,nchklev_0*nsx*nsy*(nr-2)*6 |
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CADJ INIT comlev1_kpp = COMMON,nchklev_0*nsx*nsy |
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|
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C-- RG replace 2 by max of num_v_smooth_Ri |
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CADJ INIT comlev1_kpp_sm = COMMON,nchklev_0*nsx*nsy*2 |
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|
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c-- Check the choice of the checkpointing parameters in relation |
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c-- to nTimeSteps: (nchklev_0 .ge. nTimeSteps) |
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if (nchklev_0 .lt. nTimeSteps) then |
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print* |
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print*, ' the_main_loop: TAMC checkpointing parameter ', |
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& nchklev_0 = ', nchklev_0 |
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print*, ' not consistent with nTimeSteps = ', |
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& nTimeSteps |
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stop ' ... stopped in the_main_loop.' |
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endif |
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|
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do iloop = 1, nTimeSteps |
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|
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#endif /* ALLOW_TAMC_CHECKPOINTING */ |
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|
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#else /* ALLOW_AUTODIFF_TAMC undefined */ |
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|
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c-- Start the main loop of adjoint_Objfunc. Automatic differentiation |
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c-- NOT enabled. |
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do iloop = 1, nTimeSteps |
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|
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#endif /* ALLOW_AUTODIFF_TAMC */ |
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|
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c-- >>> Loop body start <<< |
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|
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#ifdef ALLOW_AUTODIFF_TAMC |
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c-- Set the model iteration counter and the model time. |
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myiter = nIter0 + (iloop-1) |
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mytime = startTime + float(iloop-1)*deltaTclock |
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#endif |
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|
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c-- Load forcing/external data fields. |
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call timer_start('EXTERNAL_FIELDS_LOAD [ADJOINT]',mythid) |
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#ifdef INCLUDE_EXTERNAL_FORCING_PACKAGE |
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c NOTE, that although the exf package is part of the |
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c distribution, it is not currently maintained, i.e. |
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c exf is disabled by default in genmake. |
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call exf_getforcing( mytime, myiter, mythid ) |
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#else |
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call external_fields_load( mytime, myiter, mythid ) |
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#endif |
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call timer_stop ('EXTERNAL_FIELDS_LOAD [ADJOINT]',mythid) |
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|
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#ifdef ALLOW_TAMC_CHECKPOINTING |
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ikey_dynamics = ilev_1 |
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#endif |
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c-- Step forward fields and calculate time tendency terms. |
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call timer_start('DYNAMICS [ADJOINT]',mythid) |
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call dynamics( mytime, myiter, mythid ) |
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call timer_stop ('DYNAMICS [ADJOINT]',mythid) |
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|
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#ifndef ALLOW_AUTODIFF_TAMC |
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|
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#ifdef ALLOW_NONHYDROSTATIC |
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C-- Step forward W field in N-H algorithm |
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IF ( nonHydrostatic ) THEN |
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CALL TIMER_START('CALC_GW [ADJOINT]',myThid) |
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CALL CALC_GW( myThid) |
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CALL TIMER_STOP ('CALC_GW [ADJOINT]',myThid) |
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ENDIF |
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#endif |
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|
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#ifdef ALLOW_SHAP_FILT |
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C-- Step forward all tiles, filter and exchange. |
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CALL TIMER_START('SHAP_FILT [ADJOINT]',myThid) |
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CALL SHAP_FILT_APPLY( |
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I gUnm1, gVnm1, gTnm1, gSnm1, |
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I myTime, myIter, myThid ) |
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IF (implicDiv2Dflow.LT.1.) THEN |
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C-- Explicit+Implicit part of the Barotropic Flow Divergence |
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C => Filtering of uVel,vVel is necessary |
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CALL SHAP_FILT_UV( uVel, vVel, myTime, myThid ) |
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ENDIF |
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CALL TIMER_STOP ('SHAP_FILT [ADJOINT]',myThid) |
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#endif |
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|
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#ifdef ALLOW_ZONAL_FILT |
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IF (zonal_filt_lat.LT.90.) THEN |
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CALL ZONAL_FILT_APPLY( |
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U gUnm1, gVnm1, gTnm1, gSnm1, |
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I myThid ) |
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ENDIF |
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#endif |
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|
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#endif /* ALLOW_AUTODIFF_TAMC */ |
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|
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C-- Solve elliptic equation(s). |
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C Two-dimensional only for conventional hydrostatic or |
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C three-dimensional for non-hydrostatic and/or IGW scheme. |
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CALL TIMER_START('SOLVE_FOR_PRESSURE [FORWARD_STEP]',myThid) |
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CALL SOLVE_FOR_PRESSURE( myThid ) |
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CALL TIMER_STOP ('SOLVE_FOR_PRESSURE [FORWARD_STEP]',myThid) |
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|
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#ifdef ALLOW_AUTODIFF_TAMC |
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c Include call to a dummy routine. Its adjoint will be |
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c called at the proper place in the adjoint code. |
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c The adjoint routine will print out adjoint values |
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c if requested. The location of the call is important, |
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c it has to be after the adjoint of the exchanges |
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c (DO_GTERM_BLOCKING_EXCHANGES). |
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call dummy_in_stepping( myTime, myIter, myThid ) |
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#endif |
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|
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C-- Correct divergence in flow field and cycle time-stepping |
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C arrays (for all fields) ; update time-counter |
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myIter = nIter0 + iLoop |
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myTime = startTime + deltaTClock * float(iLoop) |
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CALL THE_CORRECTION_STEP(myTime, myIter, myThid) |
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|
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C-- Do "blocking" sends and receives for tendency "overlap" terms |
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c CALL TIMER_START('BLOCKING_EXCHANGES [FORWARD_STEP]',myThid) |
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c CALL DO_GTERM_BLOCKING_EXCHANGES( myThid ) |
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c CALL TIMER_STOP ('BLOCKING_EXCHANGES [FORWARD_STEP]',myThid) |
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|
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C-- Do "blocking" sends and receives for field "overlap" terms |
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CALL TIMER_START('BLOCKING_EXCHANGES [FORWARD_STEP]',myThid) |
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CALL DO_FIELDS_BLOCKING_EXCHANGES( myThid ) |
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CALL TIMER_STOP ('BLOCKING_EXCHANGES [FORWARD_STEP]',myThid) |
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|
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#ifndef ALLOW_AUTODIFF_TAMC |
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C-- Do IO if needed. |
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CALL TIMER_START('I/O (WRITE) [FORWARD_STEP]',myThid) |
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CALL DO_THE_MODEL_IO( myTime, myIter, myThid ) |
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CALL TIMER_STOP ('I/O (WRITE) [FORWARD_STEP]',myThid) |
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|
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C-- Save state for restarts |
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C Note: (jmc: is it still the case after ckp35 ?) |
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C ===== |
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C Because of the ordering of the timestepping code and |
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C tendency term code at end of loop model arrays hold |
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C U,V,T,S at "time-level" N but gu, gv, gs, gt, guNM1,... |
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C at "time-level" N+1/2 (guNM1 at "time-level" N+1/2 is |
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C gu at "time-level" N-1/2) and etaN at "time-level" N+1/2. |
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C where N = I+timeLevBase-1 |
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C Thus a checkpoint contains U.0000000000, GU.0000000001 and |
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C etaN.0000000001 in the indexing scheme used for the model |
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C "state" files. This example is referred to as a checkpoint |
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C at time level 1 |
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CALL TIMER_START('I/O (WRITE) [FORWARD_STEP]',myThid) |
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CALL WRITE_CHECKPOINT( |
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& .FALSE., myTime, myIter, myThid ) |
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CALL TIMER_STOP ('I/O (WRITE) [FORWARD_STEP]',myThid) |
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|
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#endif /* ALLOW_AUTODIFF_TAMC */ |
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|
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c-- >>> Loop body end <<< |
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|
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#ifdef ALLOW_AUTODIFF_TAMC |
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#ifdef ALLOW_TAMC_CHECKPOINTING |
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endif |
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enddo |
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endif |
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enddo |
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endif |
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enddo |
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#else |
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enddo |
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#endif |
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|
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#else |
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enddo |
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#endif |
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|
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_BARRIER |
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call timer_stop ('ADJOINT MAIN LOOP', mythid) |
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|
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call timer_start('ADJOINT FINALIZE COST', mythid) |
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|
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#ifdef ALLOW_COST_TEST |
| 381 |
c-- Veronique's test case |
| 382 |
call timer_start('cost_test [ADJOINT SPIN-DOWN]', mythid) |
| 383 |
call cost_test( myThid ) |
| 384 |
call timer_stop ('cost_test [ADJOINT SPIN-DOWN]', mythid) |
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|
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c-- Sum all cost function contributions. |
| 387 |
call timer_start('COST_FINAL [ADJOINT SPIN-DOWN]', mythid) |
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call cost_Final( mythid ) |
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call timer_stop ('COST_FINAL [ADJOINT SPIN-DOWN]', mythid) |
| 390 |
#endif |
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|
| 392 |
call timer_stop ('ADJOINT FINALIZE COST', mythid) |
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|
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end |
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