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revision 1.1760 by mlosch, Tue Nov 6 12:31:30 2012 UTC revision 1.1789 by gforget, Sat Dec 22 18:35:27 2012 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7  o pkg/seaice/seaice_calc_l/rhs.F: replace maskW/S by maskInW/S; this fixes  o verification/offline_exf_seaice and lab_sea adjoint:
8    a serious convergence problem when open boundaries are involved   - switch to new code (#undef SEAICE_GROWTH_LEGACY).
9  o pkg/ggl90: fix computation of control volumes for the case of   - switch to 4 time steps in offline, consistent with lab_sea.
10     - match paramaters from SEAICE_GROWTH_LEGACY branch in data.seaice.
11     - update results after change of experiment seaice.
12    o model/src:
13      - add run-time parameter to select CG2D solver minimum-residual solution
14        (in case of a poor convergence).
15    o pkg/seaice/seaice_lsr.F
16      - move calculation of matrix coefficients into new
17        S/R SEAICE_CALC_LSR_COEFFS; for now this routine remains in the same
18        file; the main purpose of this change is to be able to reuse the code
19        in S/R SEAICE_PRECONDITIONER
20      - modify the computation of the residual so that the mass of sea-ice
21        is not used twice; this simplyfies the calculations, but since
22        the residual is never used except when LSR_mixIniGuess.ge.4---and this is
23        not tested in testreport---this does not affect the testreport results.
24    o verification/seaice_obcs:
25      - disable SEAICE_GROWTH_LEGACY; reset input files to match those of
26        verification/lab_sea/input.salt_plume; changes results/output.txt*
27    o model/src:
28      - adapt quasi-hydrostatic formulation to work with p or p* coordinate.
29    o pkg/seaice:
30      - improve description of parameters in seaice_fgmres.F and start
31        cleaning up the code
32      - change name of SCALPROD to SEAICE_SCALPROD and modify meaning of
33        second argument
34      - add a metric based on grid cell area to SEAICE_SCALPROD; update
35        results of offline_exf_seaice.dyn_jfnk
36      - compute initial residual norm in seaice_jfnk based on SEAICE_SCALPROD
37    o pkg/aim_v23:
38      - fix an other bug in dissipation heating (grid-cell area was missing).
39    o model/src + pkg/seaice:
40      - add global (multi-tile) linear solver for pair of tri-diagonal system
41        along X and Y lines, respectively for U and V component.
42        Note: 1) MPI and cube-exchange not yet coded.
43            2) probably not accurate for poorly conditioned / large size problem.
44      - add option for SEAICE_LSR to use global (multi-tile) tri-diagonal solver;
45        default: not compiled and not used.
46    o pkg/seaice:
47      - first attempt at a multi-threaded fgmres solver for the JFNK solver:
48        introduce bi/bj loops and use global_sum_tile_rl instead of
49        mpi_allreduce in seaice_fgmres.F
50      - improve diagnostics output for fgmres solver (seaice_fgmres.F)
51      - replace a few unnecessary goto statements by if-blocks  (seaice_fgmres.F)
52      - add a verification experiment for JFNK in offline_exf_seaice
53    o verification:
54      - change (for now, only fwd test) offline_exf_seaice experiment:
55        use a re-entrant channel with idealized costline (trapezoidal shape)
56        at southern boundary to explore seaice dynamics and thermodynamics
57        with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
58        secondary test (input.thsice) use thermodynamics only with SST relaxation.
59      - add seaice-dynamics only secondary test using LSR and pkg/thsice advection.
60    o pkg/exf:
61      - disable "sstExtrapol" when Nr=1
62    o verification:
63      - add new experiment "cheapAML_box" (simple 1 layer set-up from Bruno Deremble)
64        to test pkg/cheapaml.
65    o pkg/aim_v23 & pkg/shap_filt:
66      - fix dissipation heating (erroneous gravity multiplication factor).
67    o pkg/seaice:
68      - remove unused field pressPre from jfnk solver
69      - rename two subroutines in seaice_preconditioner.F
70    o eesupp/src:
71       - S/R MDSFINDUNIT avoids reserved unit numbers (scrUnit1, eeDataUnit ...)
72    o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again
73       - remove wrong parts of the rhs and the lhs (were in there
74         because I did not understand the concept of this preconditioner)
75       - add an exchange between u- and v-sweep. This increases communication
76         by a factor of two but improves the convergence of jfnk. Ideally,
77         one would like the u- and v-sweep to be independent. So far within
78         undocumented ifdefs
79       - reorganize the extra computations for printing the residuals
80    o tools/genmake2:
81      - comment out the "mpif.h" include in NetCDF test programm (for MPI built)
82        since it's not necessary (and was preventing to use MNC in some cases).
83    
84    checkpoint64a (2012/11/16)
85    o pkg/autodiff:
86      - improve pkg-internal logical parameter switch (inAd/inFwd mode) so that
87        autodiff_readparms.F no longer depends on calling order (within
88        packages_readparms.F) and no longer requires to include ${PKG}_PARMS.h):
89        rename param turnFreeDriftInAdMode to SEAICEuseFREEDRIFTswitchInAd
90        and change param SEAICEuseDYNAMICSinAdMode to SEAICEuseDYNAMICSswitchInAd.
91    o pkg/obcs:
92      - adding tidal velocity forcing capability to obcs
93        for usage example, see verification/seaice_obcs/input.tides
94    o pkg/seaice:
95      - turn the LSR-relaxation parameters WFAU/V into runtime parameters
96        SEAICE_LSRrelaxU/V
97      - introduce runtime parameter SEAICEetaZmethod (=0 by default)
98    o pkg/aim_v23:
99      - implement heating from friction (bottom friction and stratospheric drag).
100    o pkg/shap_filt:
101      - fix diagnostic "SHAP_dKE" (was 2 time smaller); implement heating from
102        dissipation but only for Shap_funct=2, active when addFrictionHeating=T.
103    o model/src:
104      - move AddMass common block from DYNVARS.h to FFIELDS.h; allow to read-in
105        time-constant addMass field from file (addMassFile);
106      - support for heating due to friction (and Kinetic Energy dissipation):
107        add option, run-time switch and 3-D field array + support code ; each pkg
108        or S/R can add heating contribution (if there is a sink of KE); the sum is
109        accounted for as a Temperature tendency term (EXTERNAL_FORCING_T).
110    o pkg/seaice:
111      - complete merge of ITD code into seaice_growth.F
112        from MITgcm_contrib/torge/itd/code/
113        no verification so far, but Torge Martin tested
114        "1-D test case and Beaufort set up;
115        deliver okay results after 1 model year."
116      - complete merge of SEAICE_SIZE.h into all relevant routines
117      - move computation of eta at Z-points into calc_viscosities
118        + introduce global field etaZ
119        + add different methods for computing etaZ, for now the old
120          method (simple averages of eta to Z-points) is hardwired
121        + replace etaMeanZ by etaZ in seaice_lsr, seaice_calc_residual,
122          seaice_preconditioner
123      - simplify computations for SEAICE_ZETA_SMOOTHREG
124      - seaice_preconditioner:
125        + replace one remaining press by pressLoc (mistake)
126        + adjust printing of residuals
127      - improve I/O of diagnostics of JFNK in seaice_jfnk.F:
128        + add (SEAICE.h) and rename some counters (initiliased in
129          seaice_init_fixed.F)
130        + add _BEGIN/END_MASTER (myThid)  around print statements
131        + print total number of iterations and failures over SEAICE_monFreq
132          interval to STDOUT
133      - move control over output-messages by fgmres to seaice_jfnk to save
134        some operations
135      - move resetting initial guess for fgmres outside of seaice_fgmres_driver
136        in order to make restarts with sol .ne. zero (fgmres with restarts)
137        (seaice_jfnk.F, seaice_fgmres.F)
138      - seaice_calc_l/rhs.F: replace maskW/S by maskInW/S; this fixes
139        a serious convergence problem when open boundaries are involved
140    o pkg/ggl90: fix computation of control volumes for the case of
141    ALLOW_GGL90_HORIZDIFF (probably not used very often): move control volumes    ALLOW_GGL90_HORIZDIFF (probably not used very often): move control volumes
142    up half a grid cell from C-centered to W-centered (pointed out by C. Eden)    up half a grid cell from C-centered to W-centered (pointed out by C. Eden)
143  o pkg/seaice: simplify seaice_evp by avoiding use of extra fields u/vIceC  o pkg/seaice: simplify seaice_evp by avoiding use of extra fields u/vIceC
144  o pkg/autodiff  o pkg/autodiff
145    - Add inAdMode switch for SEAICEuseDYNAMICS:    - Add inAdMode switch for SEAICEuseDYNAMICS:
146      SEAICEuseDYNAMICSinAdMode      SEAICEuseDYNAMICSinAdMode
147      (extend logic in ADAUTODIFF_INADMODE_SET)      (extend logic in ADAUTODIFF_INADMODE_SET)
148  o pkg/seaice  o pkg/seaice
149    - Step 1 of merging ice-thickness distribution (ITD) code from    - Step 1 of merging ice-thickness distribution (ITD) code from

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