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revision 1.1750 by mlosch, Thu Oct 18 10:07:06 2012 UTC revision 1.1762 by mlosch, Wed Nov 7 09:59:57 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:  o pkg/seaice:
8      - improve I/O of diagnostics of JFNK in seaice_jfnk.F:
9        + add (SEAICE.h) and rename some counters (initiliased in
10          seaice_init_fixed.F)
11        + add _BEGIN/END_MASTER (myThid)  around print statements
12        + print total number of iterations and failures over SEAICE_monFreq
13          interval to STDOUT
14      - move control over output-messages by fgmres to seaice_jfnk to save
15        some operations
16      - move resetting initial guess for fgmres outside of seaice_fgmres_driver
17        in order to make restarts with sol .ne. zero (fgmres with restarts)
18        (seaice_jfnk.F, seaice_fgmres.F)
19      - seaice_calc_l/rhs.F: replace maskW/S by maskInW/S; this fixes
20        a serious convergence problem when open boundaries are involved
21    o pkg/ggl90: fix computation of control volumes for the case of
22      ALLOW_GGL90_HORIZDIFF (probably not used very often): move control volumes
23      up half a grid cell from C-centered to W-centered (pointed out by C. Eden)
24    o pkg/seaice: simplify seaice_evp by avoiding use of extra fields u/vIceC
25    o pkg/autodiff
26      - Add inAdMode switch for SEAICEuseDYNAMICS:
27        SEAICEuseDYNAMICSinAdMode
28        (extend logic in ADAUTODIFF_INADMODE_SET)
29    o pkg/seaice
30      - Step 1 of merging ice-thickness distribution (ITD) code from
31        MITgcm_contrib/torge/itd/ (author: Torge Martin)
32        The code implements concept laid out in Thorndike et al. (1975);
33        code is enabled via CPP flag SEAICE_ITD
34        nITD (in SEAICE_SIZE.h) defines number of ice thickness categories;
35        code is not complete yet!!
36      - SEAICE_SIZE.h now included in almost all seaice routines
37    o verification (using seaice):
38      - switch back seaice-dynamics (+ lower SOLV_MAX_ITERS) in ADM exp.
39        global_ocean.cs32x15.seaice ; update results.
40      - compile B-grid dynamics in FW test exp 1D_ocean_ice_column ;
41      - compile C-grid dynamics with #define SEAICE_ALLOW_JFNK in FW test exp
42        offline_exf_seaice (previously compiling B-grid).
43    o pkg/exf:
44      - fix some STOP conditions in exf_check.F (from Aug 28, modifs did not allow
45        to specify neither just 1 comp of wind or wind-stress, nor no surface momentum
46        forcing): just replace CPP option ALLOW_ATM_WIND with run-time param useAtmWind.
47    o pkg/layers (adjust changes from Sept 19):
48      - do snap-shot output and fill diagnostics from inside iLa loop (layers_calc.F)
49        this allows to remove "layers_maxNum" dimension from all layers arrays.
50    o pkg/layers (adjust changes from Sept 19):
51      - remove ALLOW_LAYERS_OUTPUT ; fix snap-shot and time-ave output ;
52      - snap-shot extended to all type of layers (not just the 1rst type);
53      - remove layers variables when corresponding CPP option is undef.
54    o pkg/layers:
55      - rename pkg/layers variable and add new output (layer exist & un-weighted
56        velocity in layer)
57    o pkg/seaice:
58    - simplify (?) ocean-drag coefficent computations by using    - simplify (?) ocean-drag coefficent computations by using
59      the same routine in all three solvers (saves some code lines)      the same routine in all three solvers (saves some code lines)
60    - remove global fields DRAGA and DRAGS from C-grid code and    - remove global fields DRAGA and DRAGS from C-grid code and
61      declare them locally in lsr.F (the only place where they are      declare them locally in lsr.F (the only place where they are
62      still used)      still used)
63      - update AD output of lab_sea.evp (very sensitive anyway).
64  o pkg/seaice: add Jacobian-free Newton Krylov solver for ice dynamics  o pkg/seaice: add Jacobian-free Newton Krylov solver for ice dynamics
65    (Lemieux et al. 2010, 2012). Turn on with the usual SEAICE_ALLOW_JFNK    (Lemieux et al. 2010, 2012). Turn on with the usual SEAICE_ALLOW_JFNK
66    and SEAICEuseJFNK=.true. A few things to note:    and SEAICEuseJFNK=.true. A few things to note:
# Line 18  o pkg/seaice: add Jacobian-free Newton K Line 69  o pkg/seaice: add Jacobian-free Newton K
69      orthogonalization method. Needs to be replaced. Original code      orthogonalization method. Needs to be replaced. Original code
70      from J.-F. Lemieux      from J.-F. Lemieux
71    - preconditioner for FGMRES is a stripped down version of LSOR    - preconditioner for FGMRES is a stripped down version of LSOR
72    - SOLV_MAX_ITERS is now used for LSOR as a solver and as a    - SOLV_MAX_ITERS is now used for LSOR as a solver and as a
73      preconditioner. For the preconditioner, the default is set to 10.      preconditioner. For the preconditioner, the default is set to 10.
74    - Jacobian times vector is computed with finite differences    - Jacobian times vector is computed with finite differences
75    - marginally related to JFNK-solver: add a smooth regularization for    - marginally related to JFNK-solver: add a smooth regularization for
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