/[MITgcm]/MITgcm/optim/optim_sub.F
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Revision 1.1.2.1 - (hide annotations) (download)
Tue Feb 5 20:34:35 2002 UTC (22 years, 2 months ago) by heimbach
Branch: ecco-branch
CVS Tags: ecco_c50_e32, ecco_c50_e33, ecco_c50_e30, ecco_c50_e31, ecco_c51_e34d, ecco_c51_e34e, ecco_c51_e34f, ecco_c51_e34g, ecco_c51_e34a, ecco_c51_e34b, ecco_c51_e34c, icebear5, icebear4, icebear3, icebear2, ecco_c50_e29, ecco_c50_e28, ecco_c44_e19, ecco_c44_e18, ecco_c44_e17, ecco_c44_e16, ecco_c50_e33a, ecco_c51_e34, ecco_ice2, ecco_ice1, ecco_c44_e25, ecco_c44_e22, ecco_c44_e23, ecco_c44_e20, ecco_c44_e21, ecco_c44_e26, ecco_c44_e27, ecco_c44_e24, ecco-branch-mod1, ecco-branch-mod2, ecco-branch-mod3, ecco-branch-mod4, ecco-branch-mod5
Branch point for: c24_e25_ice, icebear
Changes since 1.1: +128 -0 lines 
o Updating adjoint/makefile to ECCO code
o Adding optim and lsopt for line search optimization.
o Adding verif. experiments for ECCO
Code will be tagged ecco-branch-mod1.
1 heimbach 1.1.2.1
2    
3     subroutine optim_sub(
4     I nn
5     & )
6    
7     c ==================================================================
8     c SUBROUTINE optim_sub
9     c ==================================================================
10     c
11     c o Initialization of optimization run.
12     c
13     c started: Christian Eckert eckert@mit.edu 15-Feb-2000
14     c
15     c changed: Christian Eckert eckert@mit.edu 10-Mar-2000
16     c
17     c - Added ECCO layout.
18     c
19     c changed: Patrick Heimbach heimbach@mit.edu 19-Jun-2000
20     c - finished, revised and debugged
21     c
22     c ==================================================================
23     c SUBROUTINE optim_sub
24     c ==================================================================
25    
26     implicit none
27    
28     c == global variables ==
29    
30     #include "EEPARAMS.h"
31     #include "SIZE.h"
32    
33     #include "ecco.h"
34     #include "ctrl.h"
35     #include "optim.h"
36    
37     c == routine arguments ==
38    
39     integer nn
40    
41     c == local variables ==
42    
43     _RL objf
44    
45     #if defined (DYNAMIC)
46     _RL xx(nn)
47     _RL adxx(nn)
48     _RL dd(nn)
49     _RL gold(nn)
50     _RL xdiff(nn)
51     #elif defined (USE_POINTER) || (MAX_INDEPEND == 0)
52     _RL xx
53     _RL adxx
54     _RL dd(1)
55     _RL gold(1)
56     _RL xdiff(1)
57     pointer (pxx,xx(1))
58     pointer (padxx,adxx(1))
59     pointer (pdd,dd)
60     pointer (pgold,gold)
61     pointer (pxdiff,xdiff)
62     #else
63     integer nmax
64     parameter( nmax = MAX_INDEPEND )
65     _RL xx(nmax)
66     _RL adxx(nmax)
67     _RL dd(nmax)
68     _RL gold(nmax)
69     _RL xdiff(nmax)
70     #endif
71    
72     c-- Allocate memory for the control variables and the gradient vector.
73     #if defined(DYNAMIC)
74     #elif defined(USE_POINTER) || (MAX_INDEPEND == 0)
75     call myalloc( pxx , nn*REAL_BYTE )
76     call myalloc( padxx, nn*REAL_BYTE )
77     call myalloc( pdd, nn*REAL_BYTE )
78     call myalloc( pgold, nn*REAL_BYTE )
79     call myalloc( pxdiff, nn*REAL_BYTE )
80     #endif
81    
82     integer ifail
83     integer itmax
84     logical loffline
85    
86     c == external ==
87    
88     external simul
89     external lsline
90    
91     c == end of interface ==
92    
93     c-- Initialisize the model and set a first guess of the control
94     c-- variables.
95     call optim_initmod( nn, xx )
96    
97     #if defined (DYNAMIC)
98     #elif defined(USE_POINTER) || (MAX_INDEPEND == 0)
99     #else
100     if (nn .gt. nmax) then
101     print*,' OPTIMUM: Not enough space.'
102     print*,' nmax = ',nmax
103     print*,' nn = ',nn
104     print*
105     print*,' Set MAX_INDEPEND in Makefile .ge. ',nn
106     print*
107     stop ' ... stopped in OPTIMUM.'
108     endif
109     #endif
110    
111     print*, ' OPTIMUM: Calling lsopt for iteration: ',optimcycle
112     print*, ' OPTIMUM: with nn, REAL_BYTE = ', nn, REAL_BYTE
113    
114     loffline = .true.
115     itmax = numiter
116    
117     c-- Large scale optimization --> Gilbert & Lemarechal.
118     call lsopt_top( nn, xx, objf, adxx
119     & , simul, lsline
120     & , epsx, fmin, epsg
121     & , iprint
122     & , itmax, nfunc, nupdate
123     & , dd, gold, xdiff
124     & , loffline
125     & , ifail )
126    
127     return
128     end
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