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revision 1.1586 by jmc, Tue Jan 31 17:12:24 2012 UTC revision 1.1656 by jmc, Thu Apr 26 13:49:29 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/shelfice:
8     - account for partical cells in surface level below ice-shelf for hydrostatic
9       pressure calculion (set uniformFreeSurfLev to F); update isomip experiments.
10    o ad test experiments:
11     - update and rename to "ad_optfile.local" local AD-optfile specific to a
12       particular adjoint verification experiment (in verification/*/code_ad/)
13    o pkg/seaice & pkg/exf:
14     - Part two of ECCO-CLIVAR code merges.
15       Completes merge of seaice area relax. code.
16       Requires unified CPP option EXF_ALLOW_SEAICE_RELAX
17       to be set in EXF_OPTIONS.h since this pkg controls its I/O
18       (and avoids second CPP option in SEAICE_OPTIONS.h)
19     - change default value of costIceStart & costIceEnd to a valid date.
20     - add snowPrecip to HSNOW in seaice_growth
21    o pkg/ptracers:
22     - move ptracers summary and setup check into separated S/R ; add a check for
23       valid PTRACERS_Iter0 value (error+stop or just warning).
24    o pkg/cal (+ pkg/ecco):
25     - avoid calling a S/R with 2 times the same arg (FWD: unless both are only used
26       as input; and for AD, unless both are not differentiable (e.g., k index)).
27    o model/src:
28     - define internal flag "uniformFreeSurfLev" (=T when free-surface level-index
29       is everywhere k=1) to speed-up some calculations (by pass kSurf reference);
30       temporary set to usingZCoords value (to be changed to F when using shelfice).
31     - hydrostatic pressure: implement partial cell near the surface also for
32       Z-coordinates (for the case where uniformFreeSurfLev=F); replace test on
33       usingZCoords with test on uniformFreeSurfLev where needed (in NonHyd code).
34    o pkg/ctrl/ctrl_init.F:
35     - add a formal parameter to s/r ctrl_init_rec to print
36       xx_$(ctrl_valiable)_file for easier debugging
37     - move call of cal_* routines into the if-block where they are really
38       needed so that xx_$(ctrl_variable)_period can be 0 or -12 without having
39       to specify a startdate
40    o pkg/seaice:
41     - update comments in SEAICE_OPTIONS.h (+ similar update of lab_sea/code and
42       global_ocean.cs32x15/code versions).
43     - turn on seaice Multi-category (in data.seaice, SEAICE_multDim=7) for
44       verification experiment global_ocean.cs32x15.seaice and update results.
45    o pkg/exf:
46     - new S/R EXF_GETFIELD_START to return starting-time of a forcing field
47       (according to useExfYearlyFields).
48    o pkg/cal:
49     - move calendar setting & summary (previously in cal_readparams.F) into new
50       S/R CAL_INIT_FIXED to be called later in the initialisation process, once
51       length of the simulation is set (after SET_PARMS call); This is an attempt
52       to fix Pb when, e.g.: pkg/longstep, modifies the length of the run.
53     - For safety: keep a record of pkg/cal parameter settings status
54               to allow to STOP if one pkg/cal S/R is called too early.
55     - add a stop in all basic pkg/cal subroutines if called before setting is done.
56     - modify cal_getdate.F: stop when nothing was returned;
57       if called with myIter=-1, simply retrun modelBaseDate (1,2 = startDate_1,_2);
58       this allows to remove "cal.h" from seaice_read_parms.F & init_mnc_vars.F.
59    
60    checkpoint63l (2012/04/04)
61    o pkg/bbl:
62      - fix call to FIND_RHO_2D in bbl_calc_rho.F (case multi-tiles per proc);
63        update global_with_exf output.yearly.txt file.
64    o pkg/cal:
65      - start to clean-up cal_set.F ; fix for the case where baseTime is non-zero.
66      - remove 2 unsused and very short (1 line only) functions ;
67      - remove unsused subroutines from AD-Diff list.
68    o model/src:
69      - start to implement clean wait to stop in initialization S/R (config_check.F,
70         packages_check.F, ini_parms.F and pkg/obcs/obcs_check.F + pkg/mypackage)
71    o folowing PRINT_MESSAGE changes:
72      - remove reminder multiple print to the same file (STDOUT) when multi-threads.
73    o pkg/bbl:
74      - modification so it can work with z*
75      - replace deltaT with dTtracerLev(k) for asynchronous time stepping
76      - global_with_exf/input.yearly verification; changes output.yearly.txt
77    o eesupp/src:
78      - PRINT_MESSAGE: use OpenMP critical instruction (similar to PRINT_ERROR);
79        writing to unit 0 (if unit=errorMessageUnit) extended to the case myThid=1
80      - CHECK_THREADS: specific code if using OpenMP threading: improve checking of
81        # of threads across processors (e.g., different env OMP_NUM_THREADS setting)
82      - improve special preliminary call to EESET_PARMS (if eedata is read 2 times).
83      - when using MPI, always set usingMPI=T ; set default accordingly and stop
84        if not consistent.
85      - ALL_PROC_DIE: add a BARRIER after MPI_FINALIZE call ; skip this when thread
86        argument is zero (in case called within single-thread section).
87    o pkg/fizhi:
88        clean-up turbulence cold-start switch: decided in fizhi_init_vars.F, stored
89        in common bloc (fizhi_coms.h) and then passed as argument up to S/R TURBIO.
90    o pkg/exch2:
91      - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
92        activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
93      - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
94        but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
95        with bad ones coming from a not-yet-updated halo.
96        This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
97    o pkg/frazil:
98        move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
99        http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
100    o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
101    o verification/lab_sea
102      * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
103      * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
104      * nTimeSteps 3 -> 4
105      * changed reference output accordingly
106    o pkg/ctrl:
107      * fix ctrl_get_gen for xx_sst, xx_sss
108    o pkg/fizhi:
109      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
110        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
111      - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
112        fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
113        clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
114    o pkg/gmredi:
115      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
116    o pkg/fizhi:
117      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
118        (old)aces open64 tuv test.
119    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
120    o pkg/mom_vecinv:
121      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
122        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
123        with non-lin free-surf).
124    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
125      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
126      some compilers (gfortran 4.6.0 on MacOS)
127    o momentum:
128      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
129        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
130        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
131    
132    checkpoint63k (2012/03/17)
133    o model/src:
134       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
135         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
136       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
137         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
138    o model/src: solve_*diagonal.F
139       - replace division with multiplication by inverse (similar to original version)
140         update output of AD exp. global_ocean.90x40x15.
141       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
142         to enable the use of the vectorized & differentiable solve_tridiagonal.F
143       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
144         vertical advection (to get solve_tridiagonal tested in AD mode).
145    o pkg/seaice: ECCO-CLIVAR merge:
146      1. seaice AREA relaxation
147         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
148         * runtime flag: SEAICE_tauAreaObsRelax
149      2. modified global mean cost imbalance code: CPP option
150          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
151    o another iteration on solve_*diagonal.F
152       Make choices independent of AUTODIFF
153       Default will be the adjoinable vectorized version.
154       Alternative choices are:
155       * non-adjoinable original version with low memory footprint:
156         #define SOLVE_DIAGONAL_LOWMEMORY
157       * still adjoinable but does not vectorize (k as inner-most loop):
158         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
159    o testreport
160     - add option to use a home made wrapper around "make"
161     - remove MITGCM_IEEE env. variable (no longer active)
162    o pkg/shelfice
163     - improve computation of friction velocity for velocity dependent
164       exchange coefficients: include velocities into SHELFICEBoundaryLayer
165       block to average velocities vertically
166     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
167    o Modify diagonal solvers, now three versions (upon request):
168      #ifndef SOLVE_DIAGONAL_AUTODIFF
169        1. default version (dating back a while ago)
170      #else /* def SOLVE_DIAGONAL_AUTODIFF */
171      # ifdef SOLVE_DIAGONAL_KINNER
172        2. adjoinable version with k-innermost loop (G. Forget)
173      # else
174        3. adjoinable vectorized version of 2.
175      # endif
176      #endif /* SOLVE_DIAGONAL_AUTODIFF */
177      All flags are currently set within routines, but could/should be moved to CPP-options.
178      Array bounds for 1. are as before, for 2.,3. cover the entire domain
179      (could be changed for 1. too).
180    o verification/lab_sea (fwd):
181      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
182        use 7 categories (except hb87), new solve4temp params (except salt_plume),
183        constant salinity (=4) or variable salinity (salt_plume) done through
184        SItracer.
185    o pkg/seaice:
186      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
187      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
188         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
189        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
190        SEAICE_freeze got retired) but already better than previously with
191        SEAICE_freeze=123456.7 deg.C;
192      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
193        (safer multi-threaded setting); always set SEAICEuseEVP;
194      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
195        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
196        stop if multiple specifications for the same coeff; make sure default
197        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
198    o pkg/obcs:
199      - allow to switch to upwind 1rst order advection scheme for the advective
200        flux computation at the open-boundary; disabled for adjoint built.
201    o pkg/ptracers:
202      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
203      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
204      - add parameter to decide when to start a tracer; use internal flag to
205        know which tracer to step-forward; switch this internal flag at the top
206        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
207        for adjoint built.
208    o pkg/seaice:
209      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
210      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
211      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
212    o pkg/ecco:
213      - fix writing of output file DiagnosCost_ClimSalt/Theta
214        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
215    o pkg/seaice:
216      - add missing initialisation of COR_ICE array in dynsolver.F
217      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
218        compiled either way, and is tested in all exps (multidim was only tested
219        in lab_sea ad before).
220      - cosmetic change to prepare for future addition of ITD. no change to results.
221        no defaults change.
222      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
223      - by lack of adequate verification experiments, I further used custom versions
224        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
225        should be correct.
226      - avoid recomputations in ad.
227    o array initialisation in adjoint mode:
228      1) pkg/mom_common/mom_calc_ke.F:
229        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
230        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
231        part this initialisation is gone, resulting in Floating Point Exception
232        (caught by open64 compiler with debug option).
233      2) model/src/convective_weights.F
234        set output convectCount over the full array range (instead of doing
235        an update): this fix a similar issue when called within recomputation (adjoint)
236        which could by-pass the initialisation (normally done in the caller S/R).
237    o pkg/seaice:
238      - final version of turbulent flux params, as agreed at MIT ice meet:
239           SEAICE_mcPheePiston (default is ~ 0.000875)
240           SEAICE_mcPheeTaper (default is 0.)
241           SEAICE_frazilFrac (defualt is 1.)
242           SEAICE_mcPheeStepFunc (default is false)
243      - changes results at trunction error level
244      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
245    o added pkg/frazil:
246      - see frazil_description.tex for details
247      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
248    o pkg/shelfice/shelfice_thermodynamics.F
249      - fix exponents for velocity dependent exchange coefficients: change
250        from 2/3(=0) to 0.66666666666666667
251      - move computation of velocity dependent exchange coefficients into
252        separate loop, so that it applies to both thermodynamics
253      - move some divisions by constants out of loops
254    
255    checkpoint63j (2012/02/16)
256    o pkg/seaice:
257      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
258      - SItracer:  added run time params, and allow coupling to ocn salinity.
259    o pkg/seaice: remove (almost) all divisions by constants within loops
260      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
261      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
262      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
263      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
264    o pkg/seaice :
265      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
266        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
267      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
268      - add permanent SItflux diag that corresponds to TFLUX but includes
269        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
270      - allow activation/testing of a fix for suspected missing term in
271        ocn-ice heat budget (to be confirmed). To test this, you want to
272        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
273        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
274      - no change in results, fwd or ad.
275    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
276      - switch to variable freezing point.
277           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
278      - bug fix : the sublimation term that was missing is now activated.
279           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
280      - bug fix : flooding sign term for SIsal0.NE.0.
281           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
282    o pkg/seaice:
283      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
284        is now the default, and the old default constant freezing point is recovered
285        with SEAICE_tempFrz0    = -1.96,
286             SEAICE_dTempFrz_dS = 0.,
287      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
288      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
289      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
290        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
291      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
292        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
293      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
294        seaice_growth r149 for legacy branch (no results change).
295      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
296        from I. Fenty).
297      - results did not change except for global_ocean.cs32x15, mostly due to the
298        switch to variable freezing point (see above item for detail).
299    o pkg/thsice:
300      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
301        seawater freezing in thsice_calc_thickn (not used).
302    o pkg/seaice: turbulent flux term specification via run time params.
303      - replace CPP switches with run time switches to facilitate testing
304      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
305                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
306      - added runtime parameter : SEAICEturbFluxFormula
307      - move Mcphee constants to SEAICE_PARAMS.h
308      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
309                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
310                 remove seaice_summary call (moved to seaice_init_fixed)
311      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
312        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
313      - seaice_summary.F : add missing report of read turbulent flux term set up
314                           and SITRACER.
315      - seaice_check.F : check range; inform and stop if retired CPPs are used
316                         (incl. SEAICE_AGE).
317      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
318             CPP switch, same computation as before for the different options.
319      - change results at the truncation level.
320    o pkg/seaice:
321      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
322        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
323        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
324      - update verification/*/input*/data.seaice:
325        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
326        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
327        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
328        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
329    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
330      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
331        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
332        difference in results only due to machine truncation.
333      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
334        MaykutPolySatVap; keep MIN_LWDOWN.
335      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
336      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
337        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
338    o pkg/salt_plume:
339      - isolate saltPlumeFlux array exch into a specific S/R called from
340        do_oceanic_phys.F
341      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
342    o verification:
343      - move untested set-up to MITgcm_contrib/verification_other.
344    o pkg/seaice:
345      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
346    o pkg/seaice:
347      - seaice_solve4temp.F (keeping results unchanged):
348        * add 2 future run-time params to select which saturation vapor pressure
349          formula is used and how post-iteration fluxes are set.
350          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
351        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
352          the linearized expression to stay consistent with tsurf finding.
353      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
354        can be < 0.
355    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
356      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
357        conductive heat flux F_c , and add it explicitly when updating tsurf as
358        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
359        so that now F_ia has a consistent meaning through the entire routine.
360        This causes differences at truncation level: update output of fwd exp.
361        global_ocean.cs32x15.seaice.
362  o pkg/seaice:  o pkg/seaice:
363    - lots of editing/cleaning in seaice_solve4temp.F + better documentation    - lots of editing/cleaning in seaice_solve4temp.F + better documentation
364      of arrays, sign/direction of fluxes; no effect on results.      of arrays, sign/direction of fluxes; no effect on results.
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