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revision 1.1790 by jmc, Sun Dec 23 20:26:46 2012 UTC revision 1.1821 by mlosch, Fri Feb 8 07:56:45 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/diagnostics:
8      - change default missing_value from UNSET_RL to -999.
9    o pkg/layers: improve vectorization of layers_fluxcalc.F
10      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
11        time spent in this routine by more than a factor of 3 on an NEC-SX8
12      - step 2: replace search algorithm by a bisection algorithm found in
13        Press et al. Numerical Recipes in Fortran. This algorithm can be
14        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
15        For now, use this algorithm only for TARGET_NEC_SX defined.
16      - moved the search algorithm into a separate subroutine, that is kept
17        within the same file for automatic inlining.
18      - modified catching potential errors
19    o pkg/ecco:
20      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
21    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
22      - modifications for ALLOW_GENTIM2D_CONTROL
23      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
24      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
25      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
26      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
27    o model/src:
28      - account for moist thermodynamics in (dry) potential temperature equation;
29        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
30        and cpl_aim+ocn.
31      - also switch to standard compiler (gfortran, was using ifort previously)
32        for fizhi-cs experiments reference output.
33    o pkg/ctrl:
34      - 1st step toward generic time-varying control variable (2D) via CPP option
35        ALLOW_GENTIM2D_CONTROL
36      - note new namelist ctrl_nml_genarr in data.ctrl
37    o verification/global_ocean.cs32x15:
38      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
39        thsice calling sequence and update "output.icedyn.txt" output file.
40    o pkg/ptracers:
41      - from Ryan A.: code to allow to restart a tracer at regular time interval
42        specifying a reset frequency and a reset-phase (for each tracers).
43    o pkg/thsice:
44      - implement new sequence of calls for thsice+seaice:
45          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
46          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
47      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
48        in CPP_OPTIONS.h) to recover old sequence;
49      - update diagnostics for Intermediate State thsice diagnostics: now filled
50        just before advection (instead of just after advection in old sequence);
51      - update output of experiment offline_exf_seaice (standard test);
52      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
53        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
54    o pkg/aim_v23:
55      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
56      - use standard pkg/mdsio routines to read & write CO2 pickup file;
57      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
58      - Implement new sequence of calls for seaice advection (with thsice and
59        seaice diffusion): do ice advection after ice-Thermodynamic (previously
60        was done before); change aim_do_physics.F (split the bi,bj loops block);
61      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
62    o pkg/thsice:
63      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
64        where just seaice diffusion is used without seaice-dynamics.
65    
66    checkpoint64c (2013/01/18)
67    o pkg/seaice:
68      - add a parameter JFNKres_tFac that can replace JFNKres_t
69        (= JFNKres_tFac*JFNKresidual before JFNK solver)
70      - add a line search option to the JFNK solver
71      - move update of u/vIce and computation of initial residual into a separate
72        routine (same file); makes the code a little easier to read (?)
73      - the line search requires computation of the residual and for some reason
74        I cannot do the update of u/vIce at the beginning of the Newton loop
75        without changing the results, so we move computation of the new residual
76        also to the end of the Newton loop, even without the line search
77    o pkg/mdsio:
78      - write missing value (corresponding to undefined array value) to meta files;
79        skip this if missing value is one (UNSET_RL would be a better value for the
80        case of undefined missing value but it's current the default missing-value);
81        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
82    o pkg/exf & thsice:
83      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
84        diagnostics) even when SHORTWAVE_HEATING is #undef;
85    o verification/cfc_example:
86      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
87        illustrate how to use it).
88    o verification/offline_exf_seaice:
89      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
90        files to only one time-record.
91      in input.thermo: narrow the 2 bands of low initial ice-concentration near
92        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
93        snapshot output; same mcPheePiston value as in thsice with
94        surf-current=0.2m/s.
95      in input.thsice: similar set-up as in input.thermo (channel with same seaice
96        initial conditions).
97    o verification/cfc_example:
98      - update file "data" with more standard choice (default rotationPeriod,
99        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
100        set deltaTFreeSurf to deltaTtracer) and update the output.
101    o pkg/layers:
102      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
103      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
104    o verification/offline_exf_seaice:
105      - set all {field}period to zero for constant-in-time forcing (not tested
106        anywhere else).
107    o verification/offline_exf_seaice:
108      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
109      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
110    o model/src:
111      - implement Finite-Volume method for (hydrostatic) presure gradient
112        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
113    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
114      - In order to be compatible with the default EVP code, this requires changing
115        the EVP code around a little; and because any small change immediately
116        breaks the lab_sea.hb87 verification experiment, the reference output is
117        updated two times (each time the remaining aggrement was only 2 digits):
118        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
119        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
120        The adjoint test lab_sea.evp also needed to be updated.
121      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
122        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
123        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
124        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
125        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
126        kept obscure, because I need to test it a little more.
127    o pkg/cheapaml:
128      - fix few incorrect type (_RL/_RS) in subroutine calls.
129    o pkg/seaice:
130      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
131        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
132    o model/src:
133      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
134        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
135        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
136    o pkg/cheapaml:
137      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
138        update output of experiment cheapAML_box.
139      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
140        and set them only in one place (cheapaml_readparms.F).
141      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
142      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
143        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
144    o model/src/the_main_loop.F:
145      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
146    o pkg/seaice:
147      - remove legacy branch code.
148      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
149    o verification/*/code*/SEAICE_OPTIONS.h:
150      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
151        SEAICE_CAP_HEFF).
152    o pkg/cheapaml:
153      - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
154        to load new forcing fields.
155      - add missing "_d 0" where it's needed; + some editing (improve indentation).
156      - remove switch to "-r8" compiler option (no longer needed) in verification
157        cheapAML_box, keep same output (small trucation error differences).
158    o verification/offline_exf_seaice:
159      - add thermodynamics only test.
160    o verification/cheapAML_box:
161      - split the domain in 8 (2x4) tiles; add MPI and multi-threaded test;
162        keep same output (same 14 digits for cg2d).
163      - switch on "-r8" compiler option (some numerical values are missing
164        the "_d 0") and update output (only 6 digits for cg2d were preserved).
165    
166    checkpoint64b (2012/12/24)
167  o pkg/cheapaml:  o pkg/cheapaml:
168    - remove un-used variables (Qnet,EmPmR) from pickup files.    - remove un-used variables (Qnet,EmPmR) from pickup files.
169    - store tendency of advected variables into cheapaml pickup file    - store tendency of advected variables into cheapaml pickup file
# Line 11  o pkg/cheapaml: Line 171  o pkg/cheapaml:
171  o verification/offline_exf_seaice and lab_sea adjoint:  o verification/offline_exf_seaice and lab_sea adjoint:
172    - switch to new code (#undef SEAICE_GROWTH_LEGACY).    - switch to new code (#undef SEAICE_GROWTH_LEGACY).
173    - switch to 4 time steps in offline, consistent with lab_sea.    - switch to 4 time steps in offline, consistent with lab_sea.
174    - match paramaters from SEAICE_GROWTH_LEGACY branch in data.seaice.    - match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice.
175    - update results after change of experiment seaice.    - update results after change of experiment seaice.
176    o pkg/seaice:
177      - remove option SEAICE_MULTICATEGORY; has been replaced with run-time
178        parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is
179        still defined since SEAICE_multDim needs to be set to MULTDIM value (from
180        SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default.
181  o model/src:  o model/src:
182    - add run-time parameter to select CG2D solver minimum-residual solution    - add run-time parameter to select CG2D solver minimum-residual solution
183      (in case of a poor convergence).      (in case of a poor convergence).
# Line 22  o pkg/seaice/seaice_lsr.F Line 187  o pkg/seaice/seaice_lsr.F
187      file; the main purpose of this change is to be able to reuse the code      file; the main purpose of this change is to be able to reuse the code
188      in S/R SEAICE_PRECONDITIONER      in S/R SEAICE_PRECONDITIONER
189    - modify the computation of the residual so that the mass of sea-ice    - modify the computation of the residual so that the mass of sea-ice
190      is not used twice; this simplyfies the calculations, but since      is not used twice; this simplifies the calculations, but since
191      the residual is never used except when LSR_mixIniGuess.ge.4---and this is      the residual is never used except when LSR_mixIniGuess.ge.4---and this is
192      not tested in testreport---this does not affect the testreport results.      not tested in testreport---this does not affect the testreport results.
193  o verification/seaice_obcs:  o verification/seaice_obcs:
# Line 56  o pkg/seaice: Line 221  o pkg/seaice:
221    - add a verification experiment for JFNK in offline_exf_seaice    - add a verification experiment for JFNK in offline_exf_seaice
222  o verification:  o verification:
223    - change (for now, only fwd test) offline_exf_seaice experiment:    - change (for now, only fwd test) offline_exf_seaice experiment:
224      use a re-entrant channel with idealized costline (trapezoidal shape)      use a re-entrant channel with idealized coastline (trapezoidal shape)
225      at southern boundary to explore seaice dynamics and thermodynamics      at southern boundary to explore seaice dynamics and thermodynamics
226      with simple forcing. Main set-up has dynamics+thermo and SST relaxation;      with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
227      secondary test (input.thsice) use thermodynamics only with SST relaxation.      secondary test (input.thsice) use thermodynamics only with SST relaxation.

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