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C $Header: /u/gcmpack/MITgcm_contrib/mlosch/optim_m1qn3/optim_readparms.F,v 1.7 2012/05/09 18:33:38 mlosch Exp $ |
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C $Name: $ |
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|
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c Include ECCO_CPPOPTIONS because the ecco_ctrl,cost files |
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c have headers with options for OBCS masks. |
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#include "ECCO_CPPOPTIONS.h" |
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|
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subroutine optim_readparms( |
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O nn, ff |
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& ) |
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|
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c ================================================================== |
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c subroutine optim_readparms |
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c ================================================================== |
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c |
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c o Read namelist files and |
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c o read the number of control variables and return it as nn |
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c o read the cost function value from ctrlname and return as ff, |
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c note that this value is only meaning full in the first iteration |
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c |
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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 "EEPARAMS.h" |
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#include "SIZE.h" |
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#include "ctrl.h" |
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#include "optim.h" |
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|
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c == routine arguments == |
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|
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integer nn |
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|
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c == local variables == |
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|
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integer il |
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integer errio |
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|
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_RL ff |
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_RL dfminFrac |
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|
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#ifdef DYNAMIC |
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_RL vv(nn) |
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#else |
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integer nmax |
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parameter( nmax = MAX_INDEPEND ) |
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_RL vv(nmax) |
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#endif |
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|
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character*(max_len_prec) record |
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|
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c == external == |
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|
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integer ilnblnk |
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|
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c == end of interface == |
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|
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namelist /CTRL_PACKNAMES/ |
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& yadmark, ctrlname, costname, scalname, maskname, metaname, |
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& yctrlid, yctrlposunpack, yctrlpospack |
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|
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namelist /OPTIM/ |
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& optimcycle, |
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& numiter, nfunc, fmin, dfminFrac, iprint, |
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& epsf, epsx, epsg, |
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& nupdate, eps |
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|
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namelist /M1QN3/ |
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& coldStart |
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|
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c-- Preset the optimization parameters. |
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optimcycle = 0 |
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nvars = 0 |
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numiter = 1 |
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nfunc = 1 |
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fmin = UNSET_RL |
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dfminFrac = 0.0 |
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iprint = 10 |
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epsx = 1.e-6 |
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epsg = 1.e-6 |
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eps = -1.e-6 |
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nupdate = 1 |
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ff = 0. |
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cdfer expId = 'MIT_CE_000' |
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yctrlid = 'MIT_CE_000' |
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coldStart = .false. |
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|
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modeldataunit = 14 |
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scrunit1 = 11 |
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|
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c-- Read control parameters from file. |
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open(unit=scrunit1,status='scratch') |
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|
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open(unit = modeldataunit,file = 'data.ctrl', |
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& status = 'old', iostat = errio) |
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if ( errio .lt. 0 ) then |
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stop ' stopped in optim_readparms while opening data.ctrl' |
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endif |
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|
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do while ( .true. ) |
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read(modeldataunit, fmt='(a)', end=21) record |
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il = max(ilnblnk(record),1) |
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if ( record(1:1) .ne. commentcharacter ) |
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& write(unit=scrunit1, fmt='(a)') record(:il) |
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enddo |
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21 continue |
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close( modeldataunit ) |
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|
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rewind( scrunit1 ) |
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read(unit = scrunit1, nml = ctrl_packnames) |
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close( scrunit1 ) |
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print*, ' OPTIM_READPARMS: Control options have been read.' |
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|
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c-- Read optimization parameters from file. |
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open(unit=scrunit1,status='scratch') |
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|
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open(unit = modeldataunit,file = 'data.optim', |
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& status = 'old', iostat = errio) |
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if ( errio .lt. 0 ) then |
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stop ' stopped in optim_readparms while opening data.optim' |
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endif |
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|
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do while ( .true. ) |
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read(modeldataunit, fmt='(a)', end=22) record |
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il = max(ilnblnk(record),1) |
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if ( record(1:1) .ne. commentcharacter ) |
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& write(unit=scrunit1, fmt='(a)') record(:il) |
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enddo |
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22 continue |
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close( modeldataunit ) |
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|
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rewind( scrunit1 ) |
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read(unit = scrunit1, nml = optim) |
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read(unit = scrunit1, nml = m1qn3) |
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close( scrunit1 ) |
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print*, ' OPTIM_READPARMS: Minimization options have been read.' |
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|
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if (eps .gt. 0.0) then |
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epsf = eps |
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epsx = eps |
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epsg = eps |
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endif |
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c always force cold start for the 0th cycle |
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if ( optimcycle .eq. 0 ) coldStart=.true. |
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|
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c read header from costname rather than ctrlname, because the |
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c cost function value in costname is what we need, ctrlname only |
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c contains a valid cost function value for the 0th iteration |
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call optim_readdata ( nn, costname, .true., ff, vv) |
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|
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if ( dfminFrac.lt.0.0 .or. dfminFrac.ge.1.0) then |
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print*, ' OPTIM_READPARMS: dfminFrac = ', dfminFrac, |
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& ' should be > 0 and < 1' |
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stop 'S/R OPTIM_READPARMS: ABNORMAL END' |
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endif |
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if ( dfminFrac.ne.0.0 ) dfminFrac = 1.0 - dfminFrac |
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if ( fmin.eq.UNSET_RL ) then |
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if ( coldStart ) then |
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c only in this case does ff contain the actual cost function value |
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fmin = dfminFrac*ff |
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else |
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c otherwise we (ab-)use the file ctrlname for storing fmin |
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fmin = ff |
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endif |
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endif |
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if ( coldStart ) then |
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if ( fmin.le.0.0 ) then |
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print '(A,E12.6,A)', ' OPTIM_READPARMS: fmin = ', fmin, |
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& ' should be > 0' |
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stop 'S/R OPTIM_READPARMS: ABNORMAL END' |
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endif |
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if ( fmin.gt.ff ) then |
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print '(A,E12.6,A,E12.6)', ' OPTIM_READPARMS: fmin = ', fmin, |
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& ' should be < ff = ', ff |
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stop 'S/R OPTIM_READPARMS: ABNORMAL END' |
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endif |
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endif |
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|
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c-- Do some final printout. |
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print* |
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print*, ' OPTIM_READPARMS: Iteration number = ', optimcycle |
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print*, ' number of control variables = ', nn |
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print*, ' cost function value in ', ctrlname, ' = ', ff |
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if ( coldStart ) then |
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print*, ' expected cost function minimum = ', fmin |
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print*, ' expected cost function decrease = ', ff-fmin |
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endif |
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print '(a,4a,i4.4)', |
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& ' Data will be read from the following file: ', |
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& ctrlname,'_',yctrlid(1:10),'.opt', optimcycle |
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print* |
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|
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return |
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end |
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|
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CStartOfInterface |
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INTEGER FUNCTION ILNBLNK( string ) |
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C /==========================================================\ |
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C | FUNCTION ILNBLNK | |
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C | o Find last non-blank in character string. | |
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C \==========================================================/ |
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IMPLICIT NONE |
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CHARACTER*(*) string |
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CEndOfInterface |
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INTEGER L, LS |
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C |
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LS = LEN(string) |
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ILNBLNK = LS |
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DO 10 L = LS, 1, -1 |
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IF ( string(L:L) .EQ. ' ' ) GOTO 10 |
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ILNBLNK = L |
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GOTO 11 |
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10 CONTINUE |
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11 CONTINUE |
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C |
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RETURN |
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END |
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