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revision 1.1802 by jmc, Sun Jan 6 20:36:27 2013 UTC revision 1.1824 by mlosch, Wed Feb 13 09:16:43 2013 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: introduce a restricted additive Schwarz (RAS) method in
8        preconditioner for JFNK (run LSR into the overlaps as far as possible,
9        i.e OLx/y-2, but overwrite the solution in the overlaps)
10      - extend loop range in seaice_calc_viscosity
11      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
12      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
13      - slightly modify loops in tridiagonal solver lsr-preconditioner
14      - by default remove the extra exchange in seaice_preconditioner with a
15        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
16      - modify offline_exf_seaice so that old results without RAS are reproduced
17        for output.dyn_jfnk.txt
18      in seaice_fgmres.F (unrelated to RAS)
19      - add a cpp-flag option for a re-ordered mapping (potentially more
20        efficient), but because this changes the results, turn it off by
21        default
22      - replace the save statement by local common blocks
23    o utils/matlab:
24      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
25      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
26        instead of local script "load_cs.m".
27    o pkg/seaice:
28      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
29        to the scalarProductMetric and the unrolling. By chance this does not
30        change the verification experiment, because of the particular domain
31        decomposition
32    o pkg/diagnostics:
33      - change default missing_value from UNSET_RL to -999.
34    o pkg/layers: improve vectorization of layers_fluxcalc.F
35      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
36        time spent in this routine by more than a factor of 3 on an NEC-SX8
37      - step 2: replace search algorithm by a bisection algorithm found in
38        Press et al. Numerical Recipes in Fortran. This algorithm can be
39        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
40        For now, use this algorithm only for TARGET_NEC_SX defined.
41      - moved the search algorithm into a separate subroutine, that is kept
42        within the same file for automatic inlining.
43      - modified catching potential errors
44    o pkg/ecco:
45      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
46    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
47      - modifications for ALLOW_GENTIM2D_CONTROL
48      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
49      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
50      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
51      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
52    o model/src:
53      - account for moist thermodynamics in (dry) potential temperature equation;
54        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
55        and cpl_aim+ocn.
56      - also switch to standard compiler (gfortran, was using ifort previously)
57        for fizhi-cs experiments reference output.
58    o pkg/ctrl:
59      - 1st step toward generic time-varying control variable (2D) via CPP option
60        ALLOW_GENTIM2D_CONTROL
61      - note new namelist ctrl_nml_genarr in data.ctrl
62    o verification/global_ocean.cs32x15:
63      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
64        thsice calling sequence and update "output.icedyn.txt" output file.
65    o pkg/ptracers:
66      - from Ryan A.: code to allow to restart a tracer at regular time interval
67        specifying a reset frequency and a reset-phase (for each tracers).
68    o pkg/thsice:
69      - implement new sequence of calls for thsice+seaice:
70          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
71          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
72      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
73        in CPP_OPTIONS.h) to recover old sequence;
74      - update diagnostics for Intermediate State thsice diagnostics: now filled
75        just before advection (instead of just after advection in old sequence);
76      - update output of experiment offline_exf_seaice (standard test);
77      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
78        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
79    o pkg/aim_v23:
80      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
81      - use standard pkg/mdsio routines to read & write CO2 pickup file;
82      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
83      - Implement new sequence of calls for seaice advection (with thsice and
84        seaice diffusion): do ice advection after ice-Thermodynamic (previously
85        was done before); change aim_do_physics.F (split the bi,bj loops block);
86      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
87    o pkg/thsice:
88      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
89        where just seaice diffusion is used without seaice-dynamics.
90    
91    checkpoint64c (2013/01/18)
92    o pkg/seaice:
93      - add a parameter JFNKres_tFac that can replace JFNKres_t
94        (= JFNKres_tFac*JFNKresidual before JFNK solver)
95      - add a line search option to the JFNK solver
96      - move update of u/vIce and computation of initial residual into a separate
97        routine (same file); makes the code a little easier to read (?)
98      - the line search requires computation of the residual and for some reason
99        I cannot do the update of u/vIce at the beginning of the Newton loop
100        without changing the results, so we move computation of the new residual
101        also to the end of the Newton loop, even without the line search
102    o pkg/mdsio:
103      - write missing value (corresponding to undefined array value) to meta files;
104        skip this if missing value is one (UNSET_RL would be a better value for the
105        case of undefined missing value but it's current the default missing-value);
106        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
107    o pkg/exf & thsice:
108      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
109        diagnostics) even when SHORTWAVE_HEATING is #undef;
110    o verification/cfc_example:
111      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
112        illustrate how to use it).
113    o verification/offline_exf_seaice:
114      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
115        files to only one time-record.
116      in input.thermo: narrow the 2 bands of low initial ice-concentration near
117        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
118        snapshot output; same mcPheePiston value as in thsice with
119        surf-current=0.2m/s.
120      in input.thsice: similar set-up as in input.thermo (channel with same seaice
121        initial conditions).
122    o verification/cfc_example:
123      - update file "data" with more standard choice (default rotationPeriod,
124        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
125        set deltaTFreeSurf to deltaTtracer) and update the output.
126    o pkg/layers:
127      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
128      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
129    o verification/offline_exf_seaice:
130      - set all {field}period to zero for constant-in-time forcing (not tested
131        anywhere else).
132  o verification/offline_exf_seaice:  o verification/offline_exf_seaice:
133    - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;    - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
134    - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.    - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
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