/[MITgcm]/MITgcm_contrib/mlosch/optim_m1qn3/optim_readparms.F
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revision 1.7 by mlosch, Wed May 9 18:33:38 2012 UTC revision 1.8 by mlosch, Thu May 10 10:25:14 2012 UTC
# Line 142  c--   Read optimization parameters from Line 142  c--   Read optimization parameters from
142          epsx = eps          epsx = eps
143          epsg = eps          epsg = eps
144        endif        endif
145    c     always force cold start for the 0th cycle
146          if ( optimcycle .eq. 0 ) coldStart=.true.
147    
148        call optim_readdata ( nn, ctrlname, .true., ff, vv)  c     read header from costname rather than ctrlname, because the
149    c     cost function value in costname is what we need, ctrlname only
150    c     contains a valid cost function value for the 0th iteration
151          call optim_readdata ( nn, costname, .true., ff, vv)
152                
153        if ( dfminFrac.lt.0.0 .or. dfminFrac.ge.1.0) then        if ( dfminFrac.lt.0.0 .or. dfminFrac.ge.1.0) then
154         print*, ' OPTIM_READPARMS: dfminFrac = ', dfminFrac,         print*, ' OPTIM_READPARMS: dfminFrac = ', dfminFrac,
# Line 152  c--   Read optimization parameters from Line 157  c--   Read optimization parameters from
157        endif        endif
158        if ( dfminFrac.ne.0.0 ) dfminFrac = 1.0 - dfminFrac        if ( dfminFrac.ne.0.0 ) dfminFrac = 1.0 - dfminFrac
159        if ( fmin.eq.UNSET_RL ) then        if ( fmin.eq.UNSET_RL ) then
160         if ( optimcycle .eq. 0 ) then         if ( coldStart ) then
161  c     only in this case does ff contain the actual cost function value  c     only in this case does ff contain the actual cost function value
162          fmin = dfminFrac*ff          fmin = dfminFrac*ff
163         else         else
# Line 160  c     otherwise we (ab-)use the file ctr Line 165  c     otherwise we (ab-)use the file ctr
165          fmin = ff          fmin = ff
166         endif         endif
167        endif        endif
168        if ( optimcycle.eq.0 ) then        if ( coldStart ) then
169         if ( fmin.le.0.0 ) then         if ( fmin.le.0.0 ) then
170          print '(A,E12.6,A)', ' OPTIM_READPARMS: fmin = ', fmin,          print '(A,E12.6,A)', ' OPTIM_READPARMS: fmin = ', fmin,
171       &       ' should be > 0'       &       ' should be > 0'
# Line 178  c--   Do some final printout. Line 183  c--   Do some final printout.
183        print*, ' OPTIM_READPARMS: Iteration number = ', optimcycle        print*, ' OPTIM_READPARMS: Iteration number = ', optimcycle
184        print*, ' number of control variables       = ', nn        print*, ' number of control variables       = ', nn
185        print*, ' cost function value in ', ctrlname, '  = ', ff        print*, ' cost function value in ', ctrlname, '  = ', ff
186          if ( coldStart ) then
187           print*, ' expected cost function minimum    = ', fmin
188           print*, ' expected cost function decrease   = ', ff-fmin
189          endif
190        print '(a,4a,i4.4)',        print '(a,4a,i4.4)',
191       &        ' Data will be read from the following file: ',       &        ' Data will be read from the following file: ',
192       &     ctrlname,'_',yctrlid(1:10),'.opt', optimcycle       &     ctrlname,'_',yctrlid(1:10),'.opt', optimcycle
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