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heimbach |
1.3 |
C $Header: /u/gcmpack/models/MITgcmUV/pkg/cost/cost_tile.F,v 1.2 2001/09/28 14:17:49 heimbach Exp $ |
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heimbach |
1.1 |
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#include "CPP_OPTIONS.h" |
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heimbach |
1.2 |
CBOI |
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C |
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C !TITLE: COST FUNCTION |
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C !AUTHORS: mitgcm developers ( support@mitgcm.org ) |
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C !AFFILIATION: Massachussetts Institute of Technology |
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C !DATE: |
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C !INTRODUCTION: cost function evaluation |
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C \bv |
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c The cost function package is connected to the differntiability |
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c of the code. Differentiability refers to computing the derivative |
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c of a cost function with respect to a set of control variables |
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c (initial state, boundary values, model parameters). |
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c The cost function may be an element of the final state, |
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c a diagonstic thereof, a quantity that is integrated over the |
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c model trajectory, or some model vs. data misfit. |
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c This routine controls the cost function evaluation |
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c at each time step. |
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c Different contributions to the cost function are called from here. |
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c The present package contains the basic handling of the |
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c cost function evaluation along with two prototype cost terms. |
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c The cost package is connected with the mitgcm code as follows: |
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c |
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C !CALLING SEQUENCE: |
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c ... |
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c |-- initialise_fixed |
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c | |
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c |-- packages_readparms |
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c | |
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c |-- cost_readparms |
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c ... |
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c |-- initialise_varia |
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c | |
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c |-- packages_init_variables |
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c | |
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c |-- cost_init |
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c ... |
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c |-- the_main_loop |
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c | |
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c |-- do iloop = 1,nTimeSteps |
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c | forward_step |
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c | cost_tile |
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c | | |
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c | |-- cost_tracer |
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c | |
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c | enddo |
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c | |
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c |-- cost_final |
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C \ev |
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heimbach |
1.3 |
CEOI |
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heimbach |
1.2 |
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CBOP |
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C !ROUTINE: THE_MAIN_LOOP |
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C !INTERFACE: |
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heimbach |
1.1 |
subroutine cost_tile( myThid ) |
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heimbach |
1.2 |
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C !DESCRIPTION: \bv |
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C *================================================================* |
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C | subroutine cost_tile |
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C | o this routine computes is called at each time step to |
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C | accumulate the cost function for the tiles of this processor |
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C *================================================================* |
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C \ev |
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C !USES: |
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1.1 |
implicit none |
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C == Global variables === |
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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 "GRID.h" |
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heimbach |
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C !INPUT/OUTPUT PARAMETERS: |
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heimbach |
1.1 |
C == Routine arguments == |
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C myThid - Thread number for this instance of the routine. |
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integer myThid |
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#ifdef ALLOW_COST |
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heimbach |
1.2 |
C !LOCAL VARIABLES: |
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C == Local variables == |
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heimbach |
1.1 |
integer bi, bj |
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heimbach |
1.2 |
CEOP |
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heimbach |
1.1 |
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C-- TAMC need a stmt in front of a HPF directive |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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#ifdef ALLOW_COST_TRACER |
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CALL COST_TRACER( bi, bj, myThid ) |
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#endif |
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ENDDO |
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ENDDO |
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#endif /* ALLOW_COST */ |
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RETURN |
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END |
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