/[MITgcm]/MITgcm/pkg/seaice/seaice_jacvec.F
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revision 1.1 by mlosch, Tue Oct 16 07:00:21 2012 UTC revision 1.5 by mlosch, Thu Apr 4 07:02:51 2013 UTC
# Line 56  C     du/vIce   :: correction of ice vel Line 56  C     du/vIce   :: correction of ice vel
56        _RL duIce  (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)        _RL duIce  (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
57        _RL dvIce  (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)        _RL dvIce  (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
58    
59  #if ( defined (SEAICE_CGRID) && \  #ifdef SEAICE_ALLOW_JFNK
       defined (SEAICE_ALLOW_JFNK) && \  
       defined (SEAICE_ALLOW_DYNAMICS) )  
60  C     Local variables:  C     Local variables:
61        _RL utp     (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)        _RL utp     (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
62        _RL vtp     (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)        _RL vtp     (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
# Line 70  C     i,j,bi,bj :: loop indices Line 68  C     i,j,bi,bj :: loop indices
68        INTEGER i,j,bi,bj        INTEGER i,j,bi,bj
69        _RL epsilon, reps        _RL epsilon, reps
70  CEOP  CEOP
71    C     Instructions for using TAF or TAMC to generate exact Jacobian times
72    C     vector operations:
73    C
74    C     1. make small_f
75    C     2. cat seaice_calc_residual.f seaice_oceandrag_coeffs.f seaice_calc_strainrates.f seaice_calc_viscosities.f seaice_calc_rhs.f seaice_calc_lhs.f > taf_input.f
76    C     3. staf -v1 -forward -toplevel seaice_calc_residual -input uIceLoc,viceLoc -output uIceRes,vIceRes taf_input.f
77    C     4. insert content of taf_input_ftl.f at the end of this file
78    C     5. add the following code and comment out the finite difference code
79    C
80    C     Instruction for using TAF 2.4 and higher (or staf with default -v2
81    C     starting with version 2.0):
82    C
83    C     1. make small_f
84    C     2. staf -forward -toplevel seaice_calc_residual -input uIceLoc,viceLoc -output uIceRes,vIceRes seaice_calc_residual.f seaice_oceandrag_coeffs.f seaice_calc_strainrates.f seaice_calc_viscosities.f seaice_calc_rhs.f seaice_calc_lhs.f
85    C     3. copy files seaice_*_tl.f to the corresponding seaice_*.f files,
86    C        e.g. with this bash script:
87    C     for file in `ls seaice_*_tl.f`; do
88    C       nfile=`echo $file | awk -F_ '{printf "%s_%s_%s.f", $1,$2,$3}'`;
89    C       \cp -f $file $nfile
90    C     done
91    C     4. add the following code, change "call g_seaice_calc_residual" to "call seaice_calc_residual_tl", and comment out the finite difference code
92    CML      _RL g_duIce(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
93    CML      _RL g_dvIce(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
94    CML      _RL g_uIceRes(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
95    CML      _RL g_vIceRes(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
96    CML
97    CMLC     Initialise
98    CML      DO bj=myByLo(myThid),myByHi(myThid)
99    CML       DO bi=myBxLo(myThid),myBxHi(myThid)
100    CML        DO J=1-Oly,sNy+Oly
101    CML         DO I=1-Olx,sNx+Olx
102    CML          g_duIce(I,J,bi,bj) = duice(I,J,bi,bj)
103    CML          g_dvIce(I,J,bi,bj) = dvice(I,J,bi,bj)
104    CML          g_uIceRes(I,J,bi,bj) = 0. _d 0
105    CML          g_vIceRes(I,J,bi,bj) = 0. _d 0
106    CML          uIceResP(I,J,bi,bj) = 0. _d 0
107    CML          vIceResP(I,J,bi,bj) = 0. _d 0
108    CML         ENDDO
109    CML        ENDDO
110    CML       ENDDO
111    CML      ENDDO
112    CML
113    CML      CALL G_SEAICE_CALC_RESIDUAL( uIce, g_duice, vIce,
114    CML     $g_dvice, uiceresp, g_uiceres, viceresp, g_viceres, newtoniter,
115    CML     $kryloviter, mytime, myiter, mythid )
116    CMLCML      For staf -v2 replace the above with the below call
117    CMLCML      CALL SEAICE_CALC_RESIDUAL_TL( uIce, g_duice, vIce,
118    CMLCML     $g_dvice, uiceresp, g_uiceres, viceresp, g_viceres, newtoniter,
119    CMLCML     $kryloviter, mytime, myiter, mythid )
120    CML
121    CML      DO bj=myByLo(myThid),myByHi(myThid)
122    CML       DO bi=myBxLo(myThid),myBxHi(myThid)
123    CML        DO J=1-Oly,sNy+Oly
124    CML         DO I=1-Olx,sNx+Olx
125    CML          duice(I,J,bi,bj)=g_uiceres(I,J,bi,bj)
126    CML          dvice(I,J,bi,bj)=g_viceres(I,J,bi,bj)
127    CML         ENDDO
128    CML        ENDDO
129    CML       ENDDO
130    CML      ENDDO
131    
132  C     Initialise  C     Initialise
133        epsilon = 1. _d -06        epsilon = SEAICE_JFNKepsilon
134        reps    = 1. _d 0/epsilon        reps    = 1. _d 0/epsilon
135    
136        DO bj=myByLo(myThid),myByHi(myThid)        DO bj=myByLo(myThid),myByHi(myThid)
# Line 107  C     and store in du/vIce Line 165  C     and store in du/vIce
165         ENDDO         ENDDO
166        ENDDO        ENDDO
167    
168  #endif /* SEAICE_ALLOW_DYNAMICS and SEAICE_CGRID and SEAICE_ALLOW_JFNK */  #endif /* SEAICE_ALLOW_JFNK */
169    
170        RETURN        RETURN
171        END        END
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