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revision 1.1258 by mlosch, Wed Apr 28 08:37:41 2010 UTC revision 1.1648 by jmc, Tue Apr 10 17:20:53 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:
8     - update comments in SEAICE_OPTIONS.h (+ similar update of lab_sea/code and
9       global_ocean.cs32x15/code versions).
10     - turn on seaice Multi-category (in data.seaice, SEAICE_multDim=7) for
11       verification experiment global_ocean.cs32x15.seaice and update results.
12    o pkg/exf:
13     - new S/R EXF_GETFIELD_START to return starting-time of a forcing field
14       (according to useExfYearlyFields).
15    o pkg/cal:
16     - move calendar setting & summary (previously in cal_readparams.F) into new
17       S/R CAL_INIT_FIXED to be called later in the initialisation process, once
18       length of the simulation is set (after SET_PARMS call); This is an attempt
19       to fix Pb when, e.g.: pkg/longstep, modifies the length of the run.
20     - For safety: keep a record of pkg/cal parameter settings status
21               to allow to STOP if one pkg/cal S/R is called too early.
22     - add a stop in all basic pkg/cal subroutines if called before setting is done.
23     - modify cal_getdate.F: stop when nothing was returned;
24       if called with myIter=-1, simply retrun modelBaseDate (1,2 = startDate_1,_2);
25       this allows to remove "cal.h" from seaice_read_parms.F & init_mnc_vars.F.
26    
27    checkpoint63l (2012/04/04)
28    o pkg/bbl:
29      - fix call to FIND_RHO_2D in bbl_calc_rho.F (case multi-tiles per proc);
30        update global_with_exf output.yearly.txt file.
31    o pkg/cal:
32      - start to clean-up cal_set.F ; fix for the case where baseTime is non-zero.
33      - remove 2 unsused and very short (1 line only) functions ;
34      - remove unsused subroutines from AD-Diff list.
35    o model/src:
36      - start to implement clean wait to stop in initialization S/R (config_check.F,
37         packages_check.F, ini_parms.F and pkg/obcs/obcs_check.F + pkg/mypackage)
38    o folowing PRINT_MESSAGE changes:
39      - remove reminder multiple print to the same file (STDOUT) when multi-threads.
40    o pkg/bbl:
41      - modification so it can work with z*
42      - replace deltaT with dTtracerLev(k) for asynchronous time stepping
43      - global_with_exf/input.yearly verification; changes output.yearly.txt
44    o eesupp/src:
45      - PRINT_MESSAGE: use OpenMP critical instruction (similar to PRINT_ERROR);
46        writing to unit 0 (if unit=errorMessageUnit) extended to the case myThid=1
47      - CHECK_THREADS: specific code if using OpenMP threading: improve checking of
48        # of threads across processors (e.g., different env OMP_NUM_THREADS setting)
49      - improve special preliminary call to EESET_PARMS (if eedata is read 2 times).
50      - when using MPI, always set usingMPI=T ; set default accordingly and stop
51        if not consistent.
52      - ALL_PROC_DIE: add a BARRIER after MPI_FINALIZE call ; skip this when thread
53        argument is zero (in case called within single-thread section).
54    o pkg/fizhi:
55        clean-up turbulence cold-start switch: decided in fizhi_init_vars.F, stored
56        in common bloc (fizhi_coms.h) and then passed as argument up to S/R TURBIO.
57    o pkg/exch2:
58      - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
59        activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
60      - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
61        but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
62        with bad ones coming from a not-yet-updated halo.
63        This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
64    o pkg/frazil:
65        move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
66        http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
67    o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
68    o verification/lab_sea
69      * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
70      * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
71      * nTimeSteps 3 -> 4
72      * changed reference output accordingly
73    o pkg/ctrl:
74      * fix ctrl_get_gen for xx_sst, xx_sss
75    o pkg/fizhi:
76      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
77        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
78      - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
79        fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
80        clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
81    o pkg/gmredi:
82      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
83    o pkg/fizhi:
84      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
85        (old)aces open64 tuv test.
86    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
87    o pkg/mom_vecinv:
88      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
89        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
90        with non-lin free-surf).
91    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
92      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
93      some compilers (gfortran 4.6.0 on MacOS)
94    o momentum:
95      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
96        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
97        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
98    
99    checkpoint63k (2012/03/17)
100    o model/src:
101       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
102         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
103       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
104         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
105    o model/src: solve_*diagonal.F
106       - replace division with multiplication by inverse (similar to original version)
107         update output of AD exp. global_ocean.90x40x15.
108       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
109         to enable the use of the vectorized & differentiable solve_tridiagonal.F
110       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
111         vertical advection (to get solve_tridiagonal tested in AD mode).
112    o pkg/seaice: ECCO-CLIVAR merge:
113      1. seaice AREA relaxation
114         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
115         * runtime flag: SEAICE_tauAreaObsRelax
116      2. modified global mean cost imbalance code: CPP option
117          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
118    o another iteration on solve_*diagonal.F
119       Make choices independent of AUTODIFF
120       Default will be the adjoinable vectorized version.
121       Alternative choices are:
122       * non-adjoinable original version with low memory footprint:
123         #define SOLVE_DIAGONAL_LOWMEMORY
124       * still adjoinable but does not vectorize (k as inner-most loop):
125         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
126    o testreport
127     - add option to use a home made wrapper around "make"
128     - remove MITGCM_IEEE env. variable (no longer active)
129    o pkg/shelfice
130     - improve computation of friction velocity for velocity dependent
131       exchange coefficients: include velocities into SHELFICEBoundaryLayer
132       block to average velocities vertically
133     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
134    o Modify diagonal solvers, now three versions (upon request):
135      #ifndef SOLVE_DIAGONAL_AUTODIFF
136        1. default version (dating back a while ago)
137      #else /* def SOLVE_DIAGONAL_AUTODIFF */
138      # ifdef SOLVE_DIAGONAL_KINNER
139        2. adjoinable version with k-innermost loop (G. Forget)
140      # else
141        3. adjoinable vectorized version of 2.
142      # endif
143      #endif /* SOLVE_DIAGONAL_AUTODIFF */
144      All flags are currently set within routines, but could/should be moved to CPP-options.
145      Array bounds for 1. are as before, for 2.,3. cover the entire domain
146      (could be changed for 1. too).
147    o verification/lab_sea (fwd):
148      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
149        use 7 categories (except hb87), new solve4temp params (except salt_plume),
150        constant salinity (=4) or variable salinity (salt_plume) done through
151        SItracer.
152    o pkg/seaice:
153      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
154      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
155         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
156        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
157        SEAICE_freeze got retired) but already better than previously with
158        SEAICE_freeze=123456.7 deg.C;
159      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
160        (safer multi-threaded setting); always set SEAICEuseEVP;
161      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
162        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
163        stop if multiple specifications for the same coeff; make sure default
164        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
165    o pkg/obcs:
166      - allow to switch to upwind 1rst order advection scheme for the advective
167        flux computation at the open-boundary; disabled for adjoint built.
168    o pkg/ptracers:
169      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
170      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
171      - add parameter to decide when to start a tracer; use internal flag to
172        know which tracer to step-forward; switch this internal flag at the top
173        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
174        for adjoint built.
175    o pkg/seaice:
176      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
177      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
178      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
179    o pkg/ecco:
180      - fix writing of output file DiagnosCost_ClimSalt/Theta
181        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
182    o pkg/seaice:
183      - add missing initialisation of COR_ICE array in dynsolver.F
184      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
185        compiled either way, and is tested in all exps (multidim was only tested
186        in lab_sea ad before).
187      - cosmetic change to prepare for future addition of ITD. no change to results.
188        no defaults change.
189      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
190      - by lack of adequate verification experiments, I further used custom versions
191        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
192        should be correct.
193      - avoid recomputations in ad.
194    o array initialisation in adjoint mode:
195      1) pkg/mom_common/mom_calc_ke.F:
196        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
197        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
198        part this initialisation is gone, resulting in Floating Point Exception
199        (caught by open64 compiler with debug option).
200      2) model/src/convective_weights.F
201        set output convectCount over the full array range (instead of doing
202        an update): this fix a similar issue when called within recomputation (adjoint)
203        which could by-pass the initialisation (normally done in the caller S/R).
204    o pkg/seaice:
205      - final version of turbulent flux params, as agreed at MIT ice meet:
206           SEAICE_mcPheePiston (default is ~ 0.000875)
207           SEAICE_mcPheeTaper (default is 0.)
208           SEAICE_frazilFrac (defualt is 1.)
209           SEAICE_mcPheeStepFunc (default is false)
210      - changes results at trunction error level
211      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
212    o added pkg/frazil:
213      - see frazil_description.tex for details
214      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
215    o pkg/shelfice/shelfice_thermodynamics.F
216      - fix exponents for velocity dependent exchange coefficients: change
217        from 2/3(=0) to 0.66666666666666667
218      - move computation of velocity dependent exchange coefficients into
219        separate loop, so that it applies to both thermodynamics
220      - move some divisions by constants out of loops
221    
222    checkpoint63j (2012/02/16)
223    o pkg/seaice:
224      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
225      - SItracer:  added run time params, and allow coupling to ocn salinity.
226    o pkg/seaice: remove (almost) all divisions by constants within loops
227      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
228      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
229      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
230      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
231    o pkg/seaice :
232      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
233        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
234      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
235      - add permanent SItflux diag that corresponds to TFLUX but includes
236        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
237      - allow activation/testing of a fix for suspected missing term in
238        ocn-ice heat budget (to be confirmed). To test this, you want to
239        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
240        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
241      - no change in results, fwd or ad.
242    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
243      - switch to variable freezing point.
244           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
245      - bug fix : the sublimation term that was missing is now activated.
246           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
247      - bug fix : flooding sign term for SIsal0.NE.0.
248           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
249    o pkg/seaice:
250      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
251        is now the default, and the old default constant freezing point is recovered
252        with SEAICE_tempFrz0    = -1.96,
253             SEAICE_dTempFrz_dS = 0.,
254      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
255      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
256      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
257        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
258      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
259        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
260      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
261        seaice_growth r149 for legacy branch (no results change).
262      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
263        from I. Fenty).
264      - results did not change except for global_ocean.cs32x15, mostly due to the
265        switch to variable freezing point (see above item for detail).
266    o pkg/thsice:
267      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
268        seawater freezing in thsice_calc_thickn (not used).
269    o pkg/seaice: turbulent flux term specification via run time params.
270      - replace CPP switches with run time switches to facilitate testing
271      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
272                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
273      - added runtime parameter : SEAICEturbFluxFormula
274      - move Mcphee constants to SEAICE_PARAMS.h
275      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
276                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
277                 remove seaice_summary call (moved to seaice_init_fixed)
278      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
279        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
280      - seaice_summary.F : add missing report of read turbulent flux term set up
281                           and SITRACER.
282      - seaice_check.F : check range; inform and stop if retired CPPs are used
283                         (incl. SEAICE_AGE).
284      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
285             CPP switch, same computation as before for the different options.
286      - change results at the truncation level.
287    o pkg/seaice:
288      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
289        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
290        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
291      - update verification/*/input*/data.seaice:
292        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
293        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
294        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
295        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
296    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
297      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
298        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
299        difference in results only due to machine truncation.
300      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
301        MaykutPolySatVap; keep MIN_LWDOWN.
302      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
303      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
304        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
305    o pkg/salt_plume:
306      - isolate saltPlumeFlux array exch into a specific S/R called from
307        do_oceanic_phys.F
308      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
309    o verification:
310      - move untested set-up to MITgcm_contrib/verification_other.
311    o pkg/seaice:
312      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
313    o pkg/seaice:
314      - seaice_solve4temp.F (keeping results unchanged):
315        * add 2 future run-time params to select which saturation vapor pressure
316          formula is used and how post-iteration fluxes are set.
317          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
318        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
319          the linearized expression to stay consistent with tsurf finding.
320      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
321        can be < 0.
322    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
323      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
324        conductive heat flux F_c , and add it explicitly when updating tsurf as
325        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
326        so that now F_ia has a consistent meaning through the entire routine.
327        This causes differences at truncation level: update output of fwd exp.
328        global_ocean.cs32x15.seaice.
329    o pkg/seaice:
330      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
331        of arrays, sign/direction of fluxes; no effect on results.
332      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
333        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
334        note: this should have been done before changing celsius2K default.
335      - to keep results unchanged, add back old value of celsius2K in verification
336        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
337      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
338        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
339        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
340        freezing temp is consistent with value in seaice_growth.F ; this causes
341        differences at machine truncation level: update lab_sea AD output (3/4).
342    o pkg/seaice:
343      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
344        and climsst/sss even when using seaice (to prevent calculation that might
345        use SST on land); does not affect any verification exp.
346      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
347        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
348    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
349      over land (non-legacy code)
350    o vectorize salt_plume package:
351      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
352      - this code computes plumebk everywhere (also over land), thus requires
353        code to avoid divisions by zero and catch the case of kLev=Nr.
354      - efficiency of salt_plume_frac is still sub-optimal
355    o tools (genmake2):
356      - fix makefile NAME specification (option: -makefile NAME) by adding
357        "-f $MAKEFILE" in few places where it was missing including makedepend
358        command (contribution from Paul).
359    
360    checkpoint63i (2012/01/24)
361    o model/src:
362      - add factorized versions of some EOS code to find_rho.F,
363        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
364    o model/src:
365      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
366      - change default celsius2K from 273.16 to 273.15
367      - to keep results unchanged, add back old value of celsius2K in verification
368        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
369         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
370    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
371      to make TAF generate vectorizable code
372    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
373       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
374       have flags that do this more efficiently.
375    o pkg/diagnostics/diagstats_calc.F
376      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
377    o pkg/obcs (with exch2):
378      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
379        and remove code (in obcs_readparms.F) which was based on EXCH of indices
380        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
381    o pkg/exf and seaice exp:
382      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
383        so that switching off area & heff advection flags does not affect results.
384      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
385      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
386        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
387        results of verification experiments: 1D_ocean_ice_column(fwd),
388        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
389        and offline_exf_seaice (all 4).
390    o pkg/seaice:
391      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
392        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
393      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
394        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
395        not multi-dim advection;
396      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
397        SHORTWAVE_HEATING #undef.
398    o optim: make Makefile more robust (?)
399    o pkg/obcs:
400      * fix treatment of obcs_read_pickup for TAF
401    o pkg/shelfice:
402      * add missing initialisation of num_shifwflx
403      * new adjoint verification exp. for isomip
404      * change Prandtl and Schmidt numbers from generic formulations
405        (in terms of model diffus. and visc.) to separate runtime
406        parameters, with Holland and Jenkins (1999) default values.
407    o pkg/exf (interpolation):
408      - extended input field (2 rows) near the N & S poles:
409        * fill in with the symetric value (when even Nb of data in longitude)
410        * add average value at the poles only for scalar quantities ; for vector
411          component interpolation, skip the averaging and keep duplicated values,
412          unless the 2 components have same location (uvInterp=T) in which case
413          interpolate the 2 components together using S/R EXF_INTERP_UV.
414      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
415        together: this allows to account properly for local orientation when
416        averaging at N & S pole.
417      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
418        exf-interpolation near N & S poles. Undef by default.
419      - add debug check/print on 1rst iter if debugLevel >=2.
420    o pkg/exf:
421      - change masking flags definition (no longer "parameter"), put them in
422        common block and set them in S/R EXF_INIT_FIXED.
423      - change recognized masking flag from s,u,v to c,w,s since the mask
424        to use (maskC,W,S) depends on position on model grid and has little to
425        do with scalar/vector difference; fix masking if using P-coordinates.
426      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
427        and update results of exp. global_with_exf (x2).
428      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
429    o pkg/obcs
430      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
431    o pkg/exf (interpolation):
432      - assume periodicity in X only if input field cover full longitude range.
433      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
434        and should vectorise).
435      - fix input lat of the 2 added row (in case we provide N.pole data).
436    
437    checkpoint63h (2011/12/30)
438    o pkg/seaice:
439      - change declaration of UVM from _RL to _RS in order to get B-grid
440        uIce,vIce monitor when _RS = real*4
441    o pkg/offline:
442      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
443      - compute vertical velocity if not read from file (switch on exactConserv
444        & staggerTimeStep);
445      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
446    o verification:
447      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
448        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
449        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
450      - update output of exp. global_ocean.cs32x15.viscA4 after changing
451        grid-file angles (used here for coriolis-3d);
452      - remove (or gzip) few files not needed to run fizhi-cs experiments.
453    o pkg/exf (vector interpolation):
454      - rotate vector component toward local grid-axis orientation using grid-angles
455        (stored in GRID.h) instead of locally computed rotation angle; keep old code
456        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
457    o pkg/seaice:
458      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
459        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
460    o pkg/PKG_OPTIONS.h files:
461      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
462        outside of the #ifdef ALLOW_THISPKG / #endif block.
463      - update verification/*/code/PKG_OPTIONS.h files.
464    o add a verification experiment (offline_exf_seaice/input.seaice) that test
465      the B-grid LSOR solver
466    o pkg/seaice: sort out emissivity and long wave radiation step 2:
467      - add emissivity for snow and ice as new run-time parameters
468        (unfortunately) that default to the corresponding exf values; this
469        changes results in most verification experiments so that for backward
470        compatibility these parameter have to be set explicitly to inconsistent
471        values (ugly);
472      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
473        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
474        until we agree how to handle this bug properly
475    o pkg/exf (interpolation):
476      - add a set of run-time param ({inputfield}_interpMethod), one for
477        each interpolated input field, to select the interpolation method
478        with a value of zero switching off the interpolation;
479      - print interpolation parameters to standard output;
480      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
481        (to use instead runoff_interpMethod=0 in data.exf).
482      - simplify default setting of interpolation parameters (for all fields,
483        set position to match model grid cell-center position, leading to trivial
484        interpolation in case of regular Lat-Lon grid) and fix for the case of
485        non-uniform delY.
486    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
487       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
488       this factor is absolutely required, because the lw exitance (= out-going
489       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
490       where the reflectivity rho = 1-emissivity for conservation reasons. Once
491       this is established, we can remove the CPP-Flag (if we want to).
492    o pkg/seaice:
493      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
494        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
495      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
496        what the name implies (and not emissivity*BoltzmannConstant), this means
497        the old default value of 5.5e-8 now means
498        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
499        S/R exf_readparms
500      - FV-discretization of the B-grid LSOR solver, turn on with
501        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
502        of the calling routine dynsolver, so that B and C-grid code look a
503        little more alike.
504      - fix index bugs in ostres.F (B-grid code)
505    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
506    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
507      default for SEAICE_emissivity, if useEXF; requires setting a wrong
508      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
509      backward compatiblity
510    o model/src: use sigmaR in calc_ivdc
511    
512    checkpoint63g (2011/12/16)
513    o pkg/seaice/seaice_growth.F:
514      fix heat conservation of the coupled ocean-seaice system.
515      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
516      solid vs liquid water treatment is resolved via QNET.
517    o pkg/seaice/seaice_growth.F:
518      add missing term for sublimation in saltFlux, which was breaking conservation.
519    o pkg/seaice/seaice_model.F:
520      Remove this patholigical case treatment in evolution branch,
521      where it is un-necessary and breaks conservation.
522      Update global_ocean.cs32x15/results accordingly for
523      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
524    o model/src:
525      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
526      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
527    o pkg/obcs:
528      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
529      tendency for temperature and salinity that is then applied to update
530      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
531      horizontal advection and diffusion contributions on the boundary (in
532      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
533      removing the mask in S/R timestep_tracer. The advantage of this approach is
534      that the updated tracer values include contributions from the surface
535      forcing and vertical diffusion.
536      This modification changes exp4.stevens because of vertical diffusion.
537    o model/src:
538      change non-curvilinear grid setting to also work with exch2 + blank tiles:
539      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
540        face dimensions.
541      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
542        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
543        and INI_SPHERICAL_POLAR_GRID.
544      change test-experiment global_ocean.90x40x15:
545      - split the domain in many more tiles (9x4 tiles of 10x10 each);
546      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
547      - update results of both test (std & dwnslp).
548    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
549       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
550    o model/src:
551      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
552        and fix initialisation when using sigma-coords.
553    o model/src:
554     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
555       to their current value at the beginning of forward_step.F": add a new run-time
556       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
557     - set doResetHFactors=T in the following test exp:
558        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
559        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
560        and tutorial_global_oce_in_p (nonLinFS in p)
561    o pkg/ecco
562      - added IES cost term
563    o verification/advect_xz
564      - scale down the depth by 1/100 (from 200 km to just 2.km)
565      - add secondary test using divergent flow, r-star and implicit vertical advection.
566      - add note (check_conserve_TS.txt) and matlab script to check global
567        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
568    o pkg/rbcs:
569      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
570    o pkg/obcs (Stevens BCs):
571      - fix various problems in the phase speed computations of the Stevens
572        boundary conditions:
573        - sign error for western and southern boundaries,
574        - time tendencies were underestimated by factor of dTracerLev and some just
575          zero (for multidim advection schemes) -> now estimate time tendencies
576          from difference between previous (n) time level and the one before (n-1);
577          this requires storing a field per tracer per boundary, also in the pickup
578          files.
579        - replace deltaTmom in cflMer/Zon computation with dTracerLev
580        - set default phase velocity to cflMer/Zon
581      - update verification experiment exp4.stevens
582    o pkg/generic_advdiff (implicit_r):
583      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
584        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
585      - fix implicit vertical diffusion or advection with NonLin FreeSurf
586        (was using current recip_hFacC instead of future recip_hFacC): set future
587        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
588        solver S/R ;
589      - fill diagnostics of vertical advective fluxes (computed from tendency)
590        when using implicit vert. advection;
591      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
592         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
593         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
594         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
595    o pkg/diagnostics:
596      - add diags for T & S tendency which goes through Adams-Bashforth.
597    
598    checkpoint63f (2011/11/30)
599    o pkg/obcs/obcs_calc_stevens.F:
600      - join some loops to reduce number of if-statements
601      - fix a bug in code for northern and southern boundaries.
602    o pkg/seaice/seaice_init_varia.F
603      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
604        caused zero ice-velocities for the B-grid code
605    o pkg/seaice/seaice_init_fixed.F
606      - fix a bug in the initialisation of the second metric terms
607        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
608      - this affects all seaice configurations with useCurviLinearGrid = .true.
609        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
610        = .true. (default)
611      - the only verification experiment affected is global_ocean.cs32x15:
612        icedyn, seaice, and seaice_dynmix (AD)
613    o pkg/thsice/thsice_diagnostics_state.F
614      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
615        not contain garbage that can lead to surprises in diagstats_calc.F
616    o model/src:
617      - move bi,bj loops inside INTEGR_CONTINUITY ;
618      - call INTEGR_CONTINUITY directly from forward_step.F
619        (previously called from momentum_correction_step.F)
620      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
621        forward_step.F and pkg/ecco/the_main_loop.F
622    o model/src/do_oceanic_phys.F:
623      - reset addMass to zero only if useICEFRONT ;
624      - separated k-loop for rhoInSitu calculation ;
625      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
626        and at constant T,S (= WdRHOdP);
627      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
628        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
629        transport of locally-referenced potential density);
630        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
631    o gluemnc:
632      - replace ncrcat with ncks when adding variables to *.glob.nc
633      - change the way variables without record dimensions are handled so that
634        files that have variables with and without record variables can be glued:
635        add a record dimension with a new unique name to be able to differentiate
636        between variable with and without a-prior record dimensions. Remove
637        this record dimension before adding the variable to the *.glob.nc file.
638        This procedure automatically works also for grid.*.nc files that do not
639        have any record dimension.
640    o verification/cpl_aim+ocn:
641      - generate new reference output on baudelaire (gfortran, mpich2) (previously
642        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
643    o pkg/obcs/obcs_calc_stevens.F:
644      - add code for northern and southern boundaries.
645      - reorder some loops to save some operations and so that drFBar can be scalar
646    o model/src:
647      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
648        truncation) and add diagnostics for Adams-Bashforth tendency increment.
649      - update test-exp. AD output:
650        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
651      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
652        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
653        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
654        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
655        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
656        tutorial_plume_on_slope.
657    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
658      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
659      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
660      does not even come with an F77 compiler anymore, this should not be
661      a limitation
662    
663    checkpoint63e (2011/11/06)
664    o pkg/seaice adjoint of LSR:
665      - substantially rework STORE dirs.
666      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
667        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
668        and only perform SOLV_MAX_FIXED adjoint iters.
669        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
670        always goes to same record, meaning that the last forward field will be
671        the one used in the adjoint - an approximation.
672      - now produces non-zero LSR-related gradients, and acceptable gradients for
673        An's zonal (x-z) test case (to be checked in)
674      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
675        (but these are screwed up by the thermodynamics in the first place);
676        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
677        output_adm.txt also reflects changes to seaice_lsr
678      - global_ocean.cs32x15:
679        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
680          (output_adm.seaice.txt was updated)
681        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
682          (output_adm.seaice_dynmix.txt)
683    o test-exp. exp4+stevens:
684      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
685    o pkg/seaice (lsr solver):
686      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
687        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
688      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
689      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
690        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
691      - compute (with new S/R) and print initial (+ free-driff sol. if available)
692        and final residual of linearised system.
693    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
694      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
695    o pkg/obcs: Stevens BCs (still only for east and west)
696      - fix Stevens BCs by using intermediate velocities of previous
697        time step as "baroclinic" contribution rather velocity of one grid cell
698        inside the boundaries; more consistent but makes the entire treatment
699        more complicated, requires new pickup files and two new S/Rs:
700        obcs_copy_uv_n and obcs_save_uv_n
701        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
702        (undefined by default)
703      - silently move computation of some grid factors into separate loops to
704        save some recomputations
705      - add a hack for non-linear free surface
706      - add a verification experiment to exp4 that tests this code
707    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
708    
709    checkpoint63d (2011/10/25)
710    o pkg/obcs + seaice-dynamics:
711      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
712        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
713        values (consistent with an implicit method).
714      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
715        return to older implementation (same results as before); note that none of
716        the "experimental" OBCS_SEAICE options are implemented in the new version.
717      - switch test exp. seaice_obcs to use new version (update output).
718    o pkg/seaice:
719      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
720      - add parenthesis in Water-Ice drag calculations (evp & lsr);
721      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
722        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
723      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
724        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
725    o pkg/layers:
726      - Include potential density as new coordinate (Thanks to David Munday)
727    o pkg/dic:
728      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
729        carbonate computation/output to CALC_PCO2_APPROX
730    o pkg/generic_advdiff
731      - make TAF generate code that vectorizes:
732        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
733    o model/src:
734      - improve vectorization also for adjoint code of
735        solve_tridiagonal and solve_pentadiagonal. As this requires up to
736        5 new 3D-fields, this code is only turned on for the combination of
737        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
738        for singular matrix check (only for TARGET_NEC_SX).
739      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
740        ALLOW_AUTODIFF. This flag now needs to be set outside of
741        solve_tri/pentadiagonal.F
742    o pkg/exf:
743      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
744        optional namelist EXF_NML_OBCS).
745      - add many debug-print (to trace down where pkg/cal error msg comes from)
746    o pkg/mom_vecinv/mom_vi_hdissip.F
747      - rearrange loops so that vectorization is improved and in particular
748        the adjoint routine vectorizes. The code is a little longer now, but I
749        think easier to read.
750        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
751    o pkg/seaice:
752      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
753    o pkg/exch2:
754      - alternative code (without tile x tile matrix) for cumulated (global) sum;
755        used as default; keep using matrix version in adjustment.cs-32x32x1.
756    o tools/build_options:
757      - after merging some MPI and/or multi-threads specific optfiles so that
758        the modified default optfile support both built (using genmake2 -mpi
759        for the MPI built, using genmake2 -omp for OpenMP built),
760        move now obsolete optfiles to tools/build_options/unsupported/
761       (add copy of email sent to support list in doc/optfiles_changes.txt)
762    
763    checkpoint63c (2011/09/28)
764    o pkg/ebm:
765      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
766        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
767    o pkg/seaice (SItracer pickup)
768    * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
769      To be done:
770      - thorough testing of missing fields in S/R seaice_read_pickup
771      - thorough matching between generic tracers and specific fields used
772        (e.g. volume-weighted age, area-weighted age, salinity, ...)
773    o pkg/grdchk:
774      - all procs calculate and print finite-difference gradient (for testreport)
775      - change description output used by testreport;
776      - AD testing: also compare and report Finite-difference gradient;
777        => update all output_adm*.txt
778    o test exp. global_ocean_ebm:
779      - switch back useRealFreshWaterFlux (no problem anymore with run-off);
780        and turn on exactConserve; update (fwd) output.
781    o pkg/seaice (LSR):
782      - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
783      - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
784        * identical results with non-CS topology (but save up to half of EXCH calls)
785        * no much changes in cs-32 verification tests since no ice at face edges
786         (differences due to convergence criteria, since nb of iterations changed)
787        * expect some differences on lat-lon-cap grid.
788        update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
789    o pkg/exch2:
790      - add new CPP option to disable Cumul-Sum matrix (to save storage when using
791        many tiles); until alternative coding is added, just add a stop.
792    o pkg/kpp:
793      - move ptracer/salt correction to KPP diffusivity from calc_3d_diffusivity.F
794        to S/R KPP_CALC_DIFF_PTR (+ add tracer-index to argument list).
795    o optfiles:
796      - merged few MPI specific (*+mpi*) and multi-threads specific (*+mth) optfiles
797        into corresponding standard one, which now support different build:
798        (when using "genmake2 -mpi" for MPI built, "genmake2 -omp" for OpenMP built)
799      - add "darwin_amd64_gfortran" optfile (initially from Constantinos, tested by Gael)
800    o pkg/obcs (seaice):
801      - add missing EXCH for uIce,vIce after applying OBCS;
802      - remove S/R EXF_SWAPFFIELDS_X/Y , disable S/R EXF_SET_OBCS_X/Y by adding
803        argument = number of levels to S/R EXF_SWAPFFIELDS_XZ/YZ and S/R
804        EXF_SET_OBCS_XZ/YZ ; update obcs_exf_load.F;
805      - fix EXF_SET_OBCS_XZ/YZ for multi-threaded (assuming loaded arrays are shared)
806      - verification exp. seaice_obcs: split domain in 2 tiles ; add SIZE.h_mpi
807        and eedata.mth for MPI and mutlti-threaded testing.
808    o pkg/flt:
809      - make FLT EXCH working with multi-threads (and MPI + multi-threads);
810      - use buffer for floats IO (trajectories & profiles); size set in FLT_SIZE.h;
811      - fix pickup and trajectories + profiles output with multi-threads;
812      - add parameter to select group of fields to write along trajectory and
813        profile (default unchanged);
814      - only call PORT_RAND* function when flt_noise <> 0;
815      - add multi-threaded test for verification exp. flt_example.
816    o eesupp/src:
817      - fix S/R ALL_PROC_DIE for MPI+multi-threads.
818      - USE_OMP_THREADING: check that number of threads (from eedata) matches
819        actual number (from env.var. setting).
820    o pkg/ebm:
821      - fix multi-threading in ebm_area_t.F ; clean-up EBM.h header file.
822      - add multi-threaded test for verification exp. global_ocean_ebm
823    
824    checkpoint63b (2011/08/29)
825    o pkg/ebm:
826      - fix sign of runoff;
827      - update directly forcing fields (Qnet,EmPmR) to use standard
828        external_forcing_surf.F (remove ebm_forcing_surf.F);
829      - avoid loading forcing fields a 2nd time (1rst time from ini_forcing.F);
830      - set either tauThetaClimRelax (in data) or tauThetaZonRelax (in data.ebm)
831        and apply relaxation towards corresponding SST field (2-D map or ZonAver).
832      - update global_ocean_ebm parameters file data and update output (fwd+ad).
833    o verification/matrix_example:
834      - split domain in 8 tiles (2x4); add SIZE.h_mpi and eedata.mth for
835        MPI and mutlti-threaded testing.
836    o pkg/matrix:
837      - change name of S/R MATRIX_INIT to S/R MATRIX_INIT_VARIA ;
838      - fix for multi-tiles (add bi,bj indices to exp/impMatrixCounter);
839      - fix for multi-threaded (remove DATA statement);
840      - use standard DIFFERENT_MULTIPLE function;
841      - add MATRIX_OPTIONS.h
842    o verification/matrix_example:
843       To allow to split the domain in several tiles, change the domain size
844        from 31x31 to 32x32 by adding 1 row (on Southern side) + 1 column (on
845        Western side) of land points.
846    o (*_)write_pickup:
847      - fix few bugs in mypackage_read/write_pickup.F
848      - in MDS_WR_METAFILES calls, replace "myTime" by a local copy into
849        array of length 1 (was caught by compiler syntax-check).
850    o pkg/diagnostics (velocity potential solver):
851      - fix initialisation of main diagonal matrix (for overlap values)
852    o tools/build_options:
853      - towards single optfile for MPI and non-MPI built: merge few +mpi optfile
854        into previously non MPI one (linux_am64 pgf77,open64,pathf90,ifort11)
855      - linux_amd64_gfortran: merge +mpi_generic version into standard optfile:
856        * move IEEE flags to DEVEL section; take IEEE flags from +mpi_generic ;
857        * FAST case: for now, keep -O3 with ini_masks_etc.F in NOOPTFILES list;
858        and use "-devel" testreport option for standard testing on baudelaire.
859    o pkg/grdchk:
860      - Assume that all gradient-check position are within the same tile
861        corresponding to global indices (iGloTile,jGloTile) and that
862        positions (i,j indices or nbeg) are local to this tile;
863      - set tile local-indices and proc. number according to tile global-indices;
864      - remove grdchkwhichproc from namelist (retired param);
865      - send adjoint gradient to all procs so that all procs print it to STDOUT;
866      - switch on MPI test for global_ocean.90x40x15 AD test experiment.
867    o adding package bbl (Bottom Boundary Layer)
868      description in MITgcm/pkg/bbl/bbl_description.tex
869      example/test experiment in MITgcm_contrib/bbl
870    o adjoint verifications
871      - changed 5 experiments to multi-tiles
872        * global_ocean.90x40x15
873        * obcs_ctrl
874        * offline_exf_seaice
875        * tutorial_dic_adjoffline
876        * tutorial_tracer_adjsens
877        changed reference output for those that crossed tile boundaries
878        (changed choices of gradient check positions)
879      - with same tiling, switch on MPI test for the last 4 (add SIZE.h_mpi)
880      - temporary bug fix in grdchk_loc.F for obcs
881    o genmake2 & testreport
882      - add target "obj" (just for OBJFILES files) to Makefile;
883      - add option to specify FEXTRAFLAGS on command line.
884    o pkg/mypackage:
885      - remove bi,bj arguments from argument list of S/R MYPACKAGE_CALC_RHS
886    
887    checkpoint63a (2011/08/02)
888    o pkg/diagnostics (velocity potential):
889      - fix velocity-potential calculation when using OBCS: balance net inflow
890        at each level (new S/R OBCS_DIAG_BALANCE).
891      - fix some of the problems with OBCS in stream-function calculation.
892    o pkg/exf/exf_readparms.F
893      - make treatment of optional namelists (EXF_NML_04, EXF_NML_SGRUNOFF,
894        EXF_NML_OBCS) more consistent, so that you need not have these lists
895        in data.exf when they are not used.
896    o optim/optim_readdata.F:
897      - add some output about obcs variables that might help debugging
898      - add a check about nvarlength
899    o pkg/ctrl: once again, fix computation of endrec in s/r ctrl_init_rec
900    o pkg/diagnostics (velocity potential):
901      - fix mask for OBCS (still problems in stream-function with OBCS);
902      - add specific parameter (default = main code CG2D params) for solver;
903      - in case of poor convergence, use solution corresponding to lowest residual.
904    o pkg/seaice/seaice_growth.F: small changes that permit vectorizable
905      adjoint code. In general statements like tmpscal=fld(i,j) are problematic
906      and should be avoided where possible.
907    o model/src (rStar):
908      - include r* effect on reference-state (PhiRef) in totPhiHyd
909        (so that it's really the potential anomaly at the cell center);
910        affect solution only if z* with full pressure in EOS.
911      - test-exp global_ocean.90x40x15: reduce viscA4 (was not stable) and
912        update output (because of z* in totPhiHyd and viscA4 changes);
913      - keep the previous diagnostics as "PHIHYDcR" (closer to potential anomaly
914        @ constant r) until interpolation at constant r is implemented.
915    o pkg/diagnostics
916      - fix RCENTER diagnostics in case cell center is not at interface middle
917    o add code for TEOS-10 (www.teos-10.org, McDougall et al. 2011). Use
918      this eos with eosType = 'TEOS10', in data (PARM01). This eos implies
919      that THETA and SALT are "conservative temperature" and "absolute
920      salinity"
921    o pkg/ctrl
922      - fix computation of endrec in s/r ctrl_init_rec
923      - ctrl_pack/unpack_*: remove unused variables and some obsolete code
924    o pkg/seaice/seaice_growth.F
925      - fix recomputation with FENTY_AREA_EXPANSION_CONTRACTION code,
926        remove then obsolete STORE directives
927      - fix STORE directives for tice and tices, so that only the
928        appropriate part of the fields are stored (and not the entire
929        field); update global_ocean.cs32x15.seaice AD output.
930      - cosmetic changes: adjust CPP flags and indentation for better
931        legibilty
932    o pkg/autodiff: add mnc-output of adBottomDragFld (code contributed by
933      Chris Wilson)
934    o pkg/gmredi:
935       Add Sub-Meso Eddies parameterisation from Baylor (for now, disabled with TAF),
936       and test it in verification exp. "front_relax.bvp" (update output.bvp.txt)
937    
938    checkpoint63  (2011/07/11)
939    o pkg/exch2:
940     - rename+move: nTiles in W2_EXCH2_PARAMS.h --> exch2_nTiles in W2_EXCH2_TOPOLOGY.h
941     - exch2 version of Cumul-Sum routine: S/R W2_SET_MAP_CUMSUM set up the
942       (2*nTiles)x(nTiles) Cumul-Sum matrix and Master Proc collects all tiles X,Y
943       increments, calculates Cumul-Sum @ tile origin and sends results to each tile.
944    o pkg/diagnostics:
945     - deal with pairs of post-processed diags which are computed together; in
946       particular, re-order list of diags within 1 file to save 2nd computation.
947     - add S/R to compute velocity stream-function (called after velocity-potential
948       calculation) from divergence free transport -> new diagnostics "PsiVEL".
949     - add parameter to select grid-point location where PsiVEL == 0.
950    o eesupp/src:
951       new S/R to calculate cumulated sum on tiled array, corner grid-cell location
952       (specific S/R needed with exch2 topology - for now, just print an error msg)
953    o pkg/shelfice
954     - Implement friction velocity-dependent transfer coefficients following
955       Holland and Jenkins, JPO, 1999
956       Original code by M. Losch with small modifs.
957       Enable with CPP option SHI_ALLOW_GAMMAFRICT
958       and runtime flag SHELFICEuseGammaFrict
959    o verification lab_sea & global_ocean.cs32x15:
960     - use tools/xmakedepend (instead of cyrus_makedepend, in genmake_local):
961       does not miss some dependencies (but is slower) and also works with many files
962       (default makedepend limitation for AD built).
963     - use cyrus_makedepend in adjustment.128x64x1 (so that it still tested).
964    o pkg/diagnostics:
965     - add run-time parameter "useMissingValue" (def=False) to fill land-point
966        (i.e., where mask=0) with MissingValue ; used only in MNC output file.
967       This replaces CPP-option DIAGNOSTICS_MISSING_VALUE.
968     - Extend the use of "missing_value" setting from data.diagnostics for the case
969       of counter-diagnostics (where fraction-weight is zero). This applies both to
970       MNC and MDS output files.
971    o pkg/seaice/seaice_growth.F:
972      - add 'a priori' cap of latent heat flux based on actual mass considerations
973        when SEAICE_ADD_SUBLIMATION_TO_FWBUDGET is used in conjunction with the
974        non-legacy seaice_solve4temp.
975      - add diagnostic of the residual sublimation freshwater flux (the freshwater
976        flux taken from the ocean if the total actual latent heat fluxes exceed
977        the maximum)
978      - remove the CPP switch around the *_FWbySublim unit change and move diagnostic
979       fill for SIatmQnt, SIfwSubl, SIatmFW to the end of seaice_growth.F.
980      - add diagnostic of the actual sublimation freshwater flux (that is 0. ifndef
981       SEAICE_ADD_SUBLIMATION_TO_FWBUDGET) and of the latent heat flux (evap+sublim).
982      - bug fix : frWtrAtm needs a_FWbySublim ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET.
983      - bug fix : missing part to Martin's r_FWbySublim pathological case fix.
984    o verification 1D_ocean_ice_column:
985       made model domain truly 1x1x23 instead of 5x5x23 with only center cell (3,3,:) wet
986       update results
987    o pkg/diagnostics:
988     - Implement setting of "Post-Processed" diagnostics (corresponding to gdiag(5)='P')
989       which are not filled-up but computed from other diags ; In this case, the mate
990       diag points to the primary (filled-up) diag to used for post processing.
991     - Update Velocity-potential computation using post-processed diag framework.
992     ==> Change the ordering of fields and time-periods in MDS output file
993       when using periodic averaging: now writes one time record with the full set
994       of fields for this time period, then the next time reccord (it used to be
995       one field with the full set of time records then the next field).
996         Note: this is now similar to NetCDF (MNC) output file. <==
997    
998    checkpoint62z (2011/06/21)
999    o adjoint monitor:
1000     - Add adjoint monitor output for packages exf, seaice
1001       and update relevant testreport output
1002    o pkg/seaice:
1003     - re-order diags inits so that they appear in order in available_diagnostics.log
1004     - added diags: hsnow thermo. rates of change, area preceeding ridiging process,
1005       area/heff/hsnow preceeding thermodynamic growth/melt.
1006     - modified diag: SIdA; output actual effect, as the description states.
1007     - modified description: SIqneti, SIqneto, SIuheff, SIvheff, SIdAb*, HSNOW.
1008     - retired redundant diags: SIyneg, SIfice, SIsnwice, SIthdgrh.
1009       (SIyneg->SIdHbOCN; SIfice->SIdHbATC; SIsnwice->SIdHbFLO;
1010        and SIthdgrh->SIdHbOCN+SIdHbATC+SIdHbATO)
1011     - modified diags (2) : switch all SIdA*, SIdH*, SIdS* from delta to rates.
1012     - added diagnostics for seaice generic tracers (SItr*).
1013     - added SItrUnit and SItrNameLong run time param (for SItr* diags).
1014     - in diag names, replaced 'PrTh' abbrev. of 'preceeding thermo' with 'PT'.
1015     I. Fenty: 18-Jun-2011:
1016     Minor changes to seaice package:
1017     1) Retired old variables (A22, SEAICE_lhsublim, areaMax, areaMin, hiceMin) and
1018        added some new ones (SEAICE_area_reg, SEAICE_hice_reg, SEAICE_area_floor)
1019       - Differentiated "regularization variables" from "floor variables"
1020        * areaMin became SEAICE_area_reg (old A22) and SEAICE_area_floor
1021        * hiceMin became SEAICE_hice_reg (old hiceMin)
1022          (with _reg meaning regularization variable)
1023       - SEAICE_lhSublim becomes lhSublim, the sum of SEAICE_lhEvap and SEAICE_lhFusion
1024        so as to ensure energy conservation when going between phases
1025      - A22 was not used anywhere
1026     2) Changed regularization procedure for heffActual and hsnowActual to ensure
1027        well-boundedness and smooth adjoint in seaice_growth.F
1028     3) Fixed a bug where seaice_solve4temp would not recognize ice-free grid cells
1029        because the old regularization always set heffActual >= 0.05 cm
1030     4) Changed the model so that the default behavior is to put a small (10^-5) "floor"
1031        on AREA when HEFF > 0.
1032      - went from requiring ALLOW_PRECLUDE_INFINITESIMAL_AREA to be defined to
1033        requiring that DISABLE_AREA_FLOOR *not* be defined
1034     Affected verifications:
1035      - 1D_ocean_ice_column (output.txt output_adm.txt)
1036      - global_ocean.cs32x15 (output.seaice.txt output_adm.seaice.txt)
1037    o pkg/diagnostics:
1038      - move MNC code from diagnostics_out.F into new diagnostics_mnc_out.F (2 S/R).
1039      - rename S/R GETDIAG to DIAGNOSTICS_GET_DIAG and change type of 1rst argument
1040        (was _RL, now integer) with option = 0 to retrieve all levels.
1041      - add pieces of code to compute velocity potential at each level (new diagnostics
1042        PhiVEL, works only when UVELMASS & VVELMASS are also turned on);
1043        for now, using same params as CG2D (target-resisual, max Nb of iter ...).
1044      - fix few issues with counter diagnostics in diagnostics_setdiag.F &
1045        diagstats_setdiag.F (if diagnostic counter is itself a counter diag)
1046        and in diagnostics_fract_fill.F (do not need a valid pointer for the
1047        diagnostics counter-mate); check that definition of counter-diagnostic
1048        includes a valid counter-mate (in diagnostics_set_levels.F).
1049    o model/src (rStar):
1050      - add rStar scaling factor in diags_phi_hyd.F (similar to calc_grad_phi_hyd.F);
1051        affect solution only if z* with full pressure in EOS;
1052        update output of test-exp global_ocean.90x40x15.
1053    o pkg/seaice:
1054      - introduce siEps=1e-5 parameter
1055      - use areaMax in AREA update (part 4), consistent with ridging step (part 2.5).
1056      - re-organize SEAICE_ADD_SUBLIMATION_TO_FWBUDGET code.
1057      - introduce ALLOW_SITRACER and seaice_tracer_phys.F to handle generic seaice tracer.
1058        For now it covers, and was tested for, ice salinity and age (attached to HEFF),
1059        as well as ice cover age and ridging index (attached to AREA).
1060        For now the run time parameters (in data.seaice/SEAICE_PARM03) are
1061        SItrName (e.g. 'age') and SItrMate ('HEFF', which is the default, or 'AREA').
1062        Up to SItrMaxNum=3 tracers can be used simultaneously.
1063    o pkg/salt_plume:
1064      -introduce SPsalFRAC run time parameter that sets the fraction of the
1065       salt by-product of ice growth (SPsalFRAC*(1-SIsalFRAC)*salt typically)
1066       that gets vertically redistributed (fluxed down) by pkg/salt_plume.
1067    o model debug options:
1068      - Switch reading of debugMode from S/R INI_PARMS (parameter file "data", stored
1069        in PARAMS.h) to S/R EESET_PARMS (parameter file "eedata", stored in EEPARAMS.h).
1070      - Refine debug-msg printing selection (3 new levels):
1071        debugMode  : controls printing of debug messages (sequence of S/R calls).
1072        debugLevel : controls printing of algorithm-relevant auxiliary/debug messages
1073         debLevZero =  0 ; /* level of disabled aux. msg printing */
1074         debLevA =  1 ; /* level of minimum  aux. msg printing */
1075         debLevB =  2 ; /* level of low aux. print (report read-file opening)*/
1076         debLevC =  3 ; /* level of moderate debug prt (most pkgs debug msg) */
1077         debLevD =  4 ; /* level of enhanced debug prt (add DEBUG_STATS prt) */
1078         debLevE =  5 ; /* level of extensive debug printing */
1079        New debugLevel default: with default debugMode value (=F),
1080          = 2 (debLevB) or = 1 (debLevA) in case ALLOW_AUTODIFF is defined.;
1081          and if debugMode=T, default debugLevel = 4 (debLevD).
1082        Relation with previous settings:
1083         debLevB (=2) corresponds to former debLevA (=1)
1084         debLevD (=4) corresponds to former debLevB (=2)
1085        Note:
1086         a) if debugLevel=0, skip WRITE_GRID call when nIter0 > 0 (same as before);
1087         b) default debugLevel=1 is convenient in AD runs (avoid many file opening msgs);
1088            to recover previous default, set debugLevel=2 (e.g. AD-test hs94.1x64x5)
1089      - Add new parameter (printResidualFreq, read from PARM02 namelist) to print
1090        detailed CG solvers convergence; off (=0) by default, except if debugLevel=5.
1091    o pkg/obcs:
1092      - change OBCSfixTopo default from True to False (should not change the results);
1093        keep OBCSfixTopo=T in verification-exp. seaice_obcs.
1094    o pkg/thsice:
1095      - fix bug in thsice_calc_thickn.F (was introduced in version 1.18) in
1096        2nd layer seaice sublimation (unlikely to happen)
1097      - use Interior mask for OBCS in thsice_advection.F (similar to what is
1098        done in gad_advection & seaice_advection).
1099    o adjoint:
1100      bug fix spotted by Gael Forget:
1101      seaice_advection and thsice_advection still had
1102      legacy CPP options to avoid CS corner updates for adjoint
1103    o pkg/seaice:
1104      => Change some of the defaults (2011/05/29):
1105         - change SEAICEuseFluxForm default (from False to True)
1106         - change DIFF1 default (from 0.004 m/s to 0. m/s)
1107         And print warnings if DIFF1 is not set in data.seaice and centered
1108          avection scheme is used without any diffusion.
1109      also:
1110      - fix seaice_diffusion calls in default AdvScheme part of seaice_advdiff.F;
1111      - set SEAICEdiffKh[] default in the same way as SEAICEadvSch[]
1112      - stop if DIFF1<>0 with SEAICEadvScheme <> 2, if DIFF1<>0 with any
1113        other non-zero SEAICEdiffKh[] diffusivity, if SEAICEadvSalt=T with
1114        #undef SEAICE_VARIABLE_SALINITY, if SEAICEadvAge=T with #undef SEAICE_AGE.
1115      update results of test exp.:
1116         lab_sea: output.fd (switch to AdvScheme=33 with diffKh=20)
1117             output.hb87, output_adm.evp (SEAICEuseFluxForm=T and diffKh=200)
1118             output_adm.noseaicedyn (SEAICEuseFluxForm=T)
1119         offline_exf_seaice: output.seaicetd, output_adm (SEAICEuseFluxForm=T)
1120         seaice_obcs: output (SEAICEuseFluxForm=T)
1121      and prescribe old default for SEAICEuseFluxForm (=F) and DIFF1 (=0.004)
1122          for standard fwd & AD lab_sea tests (to keep the same output).
1123    o pkg/seaice/seaice_growth.F:
1124      - use Ian Fenty's capping formulas for actual ice
1125      thickness thoughout EVOLUTION branch.
1126      - put treatment pathological case #2) in CPP brackets
1127      (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default).
1128      - update global_ocean.cs32x15 and 1D_ocean_ice_colum results accordingly.
1129    o pkg/seaice:
1130      - seaice_diffusion.F : remove the min(DX,DY) factor permanently;
1131      pass the Laplacian diffusivity (in m^2/s) diffKh as a parameter;
1132      also pass fac as a param, which can be 1. (to update the tendency
1133      field) or the time step (to update the field itself).
1134      - seaice_advdiff.F: for multidim, call seaice_diffusion with
1135      e.g. SEAICEdiffKhHeff and with fac=1; for single-dim, call
1136      seaice_diffusion with e.g. SEAICEdiffKhHeff and with fac=time step.
1137      - SEAICE_PARAMS.h, seaice_readparms.F, seaice_check.F :
1138      hooks to handle SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.
1139    o pkg/seaice:
1140      diffusion with centered advection scheme (diffus.F & advect.F):
1141      - simplify S/R DIFFUS (put deltaT & DIFF1 factor outside, move EXCH outside)
1142        to just compute the laplacian of input-field.
1143      - unroll k loop (harmonic,biharmonic diff) in advect.F to save 1 exch call.
1144      - fix flux-form version in diffus.F to conserve tracer.
1145      update output of lab_sea.fd & lab_sea.hb87 (1rst set of modif affects
1146       machine truncation) and lab_sea.salt_plume (conservative flux-form modif)
1147    
1148    checkpoint62y (2011/05/26)
1149    o pkg/seaice:
1150     - seaice_growth.F : in EVOLUTION branch, always include
1151       a_QSWbyATM_cover in qnet (as it should be).
1152     - verification/global_ocean.cs32x15 : update results accordingly
1153       (output.seaice.txt output_adm.seaice.txt).
1154    o pkg/seaice + obcs:
1155     - use maskInW & maskInS in multi-dim advection and biharmonic diffusion:
1156       equivalent of assuming no tracer gradient outside the OB region.
1157       update output of seaice_obcs (uses DIFF1 <>0 => biharmonic diffusion)
1158     - remove calls to OBCS_COPY_TRACER after EXCH calls (no longer needed
1159       after changes above);
1160     - obcs+seaice cleaning: apply seaice-tracer OB values to tracer field
1161       only at OB location (instead of over a band of OLx width).
1162    o pkg/seaice:
1163     - fix wrong indices in old (non Flux-Form) diffusion default S/R diffus.F
1164       (dxG(I+1, ...) changed to dxG(I, ...), no impact on Lat-Lon grid)
1165    o pkg/obcs:
1166      - split header file "OBCS.h" into 4 separated files:
1167        OBCS_PARAMS.h, OBCS_GRID.h, OBCS_FIELDS.h & OBCS_SEAICE.h
1168       Note: OBCS_PARAMS.h & OBCS_GRID.h can be included without OBCS_OPTIONS.h
1169         (contain no conditional statement which depends on OBCS options).
1170      - move "useOBCSYearlyFields" from "data.obcs" (hold in OBCS_PARAMS.h)
1171        to parameter file "data.exf", namelist EXF_NML_OBCS (in EXF_PARAM.h).
1172    o ctrl, cost, grdchk & autodiff pkgs:
1173      - make options file more standard (like other {PKG}_OPTIONS.h file but
1174        with AD_CONFIG.h); clean-up some of the included header files.
1175    o pkg/obcs:
1176      - do not mask tracer when applying OB (tracer == 0 could generate problems)
1177      - apply tracer OB values to tracer field only at OB location (instead of
1178        over a band of OLx width)
1179      - clean-up obcs_apply_w.F & obcs_apply_eta.F (since less calls to these S/R)
1180      - remove OBCS_MULTIDIM_OLD_VERSION code in gad_advection.F and remove
1181        obcs_apply_tloc.F & obcs_apply_sloc.F
1182    o obcs in model/src:
1183      - call OBCS_APPLY_W only if NonHydrostatic.
1184      - call OBCS_APPLY_ETA only if NonLinFreeSurf.
1185      - reset dEtaHdt and wVel to zero outside OB interior region ;
1186      - leave tracer unchanged outside OB interior region: This has no effect
1187        on the solution but just to prevent unrealistic tracer value outside OB.
1188      - zero out velocity outside OB interior region: This has no effect on
1189        the solution but just to prevent unrealistic velocity outside OB.
1190    o obcs and non-lin free-surf:
1191       move call to OBCS_APPLY_R_STAR from update_r_star.F to calc_r_star.F
1192       and call to OBCS_APPLY_SURF_DR from update_surf_dr.F to calc_surf_dr.F
1193       + add argument "etaFld" to OBCS_APPLY_R_STAR & OBCS_APPLY_SURF_DR:
1194       this fixes missing EXCH + get consistent eta OB value (+ fix restart).
1195       update results of test-exp. exp4(nlfs).
1196    o exp4 (nlfs) test-exp:
1197       use OBC for Eta at Western & Eastern OB (to test prescribing Eta
1198       with NonLin-FreeSurf); update output.nlfs.txt
1199    o obcs and 2d/3d solver norm:
1200       use interior masks (maskInC) to cancel out cg2d & cg3d matrix coeff at OB
1201       and outside OB interior region (will allow to place OB further inside the
1202       domain). Depending on the domain, can affects cg2d-Norm (previous
1203       cancellation outside OB was only partial), e.g. in exp4 & obcs_ctrl,
1204       and cg3d-Norm (previous Norm was computed before canceling OB terms),
1205       e.g. in tutorial_plume_on_slope.
1206      - update output of exp.: exp4 (x2), obcs_ctrl and tutorial_plume_on_slope.
1207    o pkg rbcs:
1208      - split RBCS.h into 3 files: RBCS_SIZE.h, RBCS_PARAMS.h & RBCS_FIELDS.h
1209      - add capability to apply relaxation to horizontal velocity uVel & vVel.
1210    o pkg/grdchk: add gradient check for control variable xx_shifwflx
1211    o pkg/shelfice/shelfice_init_fixed.F
1212      fix CPP-flag combinations
1213    o pkg/seaice: Merge iceage code of Pierre Rampal
1214      * update/change/correct ice age calculations
1215      * add age updates for pathological cases
1216      Probably needs more testing...
1217    
1218    checkpoint62x (2011/05/13)
1219    o pkg/mom_vecinv:
1220       high-order vorticity scheme: use interior masks (maskInW & S)
1221       to zero-out (outside OB) gradient of vorticity.
1222    o verification exp.:
1223       turn on "useEnergyConservingCoriolis" (better discretisation) in exp.
1224       hs94.128x64x5 and seaice_obcs ; update results.
1225    o pkg/obcs:
1226      fix bug in OBeta for YZ sections in obcs_exf_load.F
1227    o pkg/ctrl, pkg/shelfice, and optim:
1228      - add new control variable xx_shifwflx (fresh water flux underneath ice
1229        shelves). This is almost as tedious as obcs-ctrl, because the
1230        variables needs its own mask.
1231      - add a cost function term that penalizes the deviation of xx_shifwflx
1232        from the first guess (zero) in analogy to other control variables
1233    o pkg/shelfice:
1234      - start basic adjoint
1235    o pkg/ctrl:
1236      - remove extra 2D field "for good measure" when initializing in
1237        ctrl_set_globfld_[xy/xz/yz].F
1238      - replace hard coded precision 32 (a bug) in ctrl_map_ini_gen by ctrlprec
1239      - improve error messages in ctrl_set_unpack_*
1240    o OBC implementation in momentum:
1241       use interior masks (maskInC,W & S) in momentum S/R:
1242       - multiply divergence, tension and some del^i.u or del^j.v by maskInC
1243       - multiply del2u,del2v by maskInW/S (biharmonic viscosity)
1244       - multiply horiz. grad of vorticity by maskInW/S (in Leith scheme)
1245       - multiply gradient of wVel by maskInW/S in del2w calculation (NonHyd)
1246       Motivation: fix/clean implementation of OBC with biharmonic-viscosity
1247        (and also with Leith/Smagorinsky harmonic-viscosity).
1248       Update output of experiment dome and exp4 (+nlfs).
1249    o exp4 test-exp:
1250      - turn on: nonHydrostatic, exactConserv, viscA4 (with momDissip_In_AB=F)
1251        and prescribe time-varying OB (without pkg/exf) for zonal-velocity
1252        at Western & Eastern Boundaries (+/- 1 per-cent); Also prescribe
1253        time-varying OB at Western-side for wVel (NonHyd); update output.
1254      - add secondary set-up (.nlfs) using NonLin FreeSurf (z*) + mom_vecinv
1255        and biharmonic-viscosity ; also use prescribed time varying OB.
1256    o pkg/obcs:
1257      fix bug in OBWeta,OBWeta indices in obcs_apply_r_star.F
1258    o model/src:
1259      - fix startTime setting when baseTime<>0 & nIter0=0 are specified ;
1260      - initialise startTime & nIter0 with unlikely values: allows to set one
1261        from the other without ambiguity.
1262    o seaice_obcs test-exp.:
1263      add small diffK4T,S to test biharmonic diffusivity with OBCS ; update output.
1264    o pkg/obcs:
1265      - remove calls to OBCS_COPY_TRACER after EXCH for T,S & pTracer:
1266        no longer needed with maskInC,W,S in pkg/generic_advdiff.
1267    o pkg/seaice:
1268      - retired SEAICE_SALINITY and SEAICE_salinity in favor of
1269        SEAICE_VARIABLE_SALINITY and SIsalFRAC, respectively.
1270      - fixed bug in the initialization of sea ice salinity variable HSALT
1271        in seaice_init_varia.F  (removed dependence on ICE2WATR)
1272    o fizhi-cs test exp.:
1273       switch reference output convention for these 2 non-standard test-exp,
1274        from: pgi  6.1-5 on faulks (FC.6, -of linux_ia32_pgf77+authors_fc5)
1275          to: ifort 11.1 on baudelaire (FC.13, -of linux_amd64_ifort11)
1276       reason: faulks might get retired soon and pkg/fizhi has still Pb with gfortran
1277    o model/inc:
1278      - change type of PmEpR array (from _RS to _RL) to fix restart (with "-use_r4")
1279        of exp. global_ocean.90x40x15 (Suncronous time-stepping + Real-FW + NonLin-FS)
1280    o pkg/seaice:
1281      - fix calculation of saltFlux and saltPlumeFlux when using SEAICE_SALINITY
1282    o verification/lab_sea, 1D_ocean_ice_column, seaice_obcs, global_ocean.cs32x15
1283      - updated output*.txt files due to bug fixes in salt, saltPlumeFlux,
1284        and initial HSALT
1285    
1286    checkpoint62w (2011/04/26)
1287    o pkg/mom_fluxform:
1288      - fix calculation of del2u & del2v (no-slip BC) when using Non-Lin Free-Surf.
1289      - use parameter "sideDragFactor" in no-slip BC side-drag part.
1290      - update output of exp. global_ocean.90x40x15
1291    o pkg/mom_vecinv:
1292      mask del2u & del2v (no effect on results, but cleaner & closer to mom_fluxform)
1293    o update seaice exp.:
1294      use more consistent parameter values (remove "backward compatability only":
1295       ICE2WATR, SEAICE_lhSublim, SEAICE_cpAir, SEAICE_rhoAir + set rhoConstFresh)
1296      related to thermodynamics seaice. Update output (fwd+AD) of exp.:
1297       1D_ocean_ice_column (x2), lab_sea (x8), ioffline_exf_seaice (x2) & seaice_obcs
1298    o update test-exp global_ocean.90x40x15:
1299      o use default CD_CODE_OPTIONS file (Adams-Bashforth on CD Mom & Coriolis).
1300      o increase Overlap size from 2 to 3 (to allow to test bi-harmonic Visc.)
1301      o new pickup-files from a 100.yr run with pkg/down_slope (input.dwnslp params)
1302      o turn on zStar & viscA4 in standard set-up (dir input/)
1303        and update output files: output.txt & output.dwnslp.txt
1304    o new AD-test experiment: obcs_ctrl
1305      (From Matt MITgcm_Contrib/SOSE/BoxAdj) to test OBCS as control vector.
1306    o pkg/dic:
1307      fix two bugs in handling water vapour pressure in carbonate chemistry
1308      and air-sea fluxes. Found by Val Bennington and Galen McKinley
1309      (add DIC Option = WATERVAP_BUG to recover old results)
1310      update output of tutorial_global_oce_biogeo (fwd+AD) & tutorial_dic_adjoffline
1311    o adding allowInteriorFreezing option to check for water below freezing point
1312      at depth and bring the negative heat anomaly to the surface level
1313    o pkgs _fields_load:
1314      - extend GET_PERIODIC_INTERVAL to deal with non-periodic case (from pkg/rbcs)
1315      - use new S/R GET_PERIODIC_INTERVAL in pkgs:
1316        bulk_force, cheapaml, cfc, dic, obcs (+ ctrl/ctrl_get_gen_rec), offline and
1317        rbcs to get interpolation weights and time reccord number.
1318      - fix multi-threading in aim_fields_load.F
1319      - apply EXCH to temp arrays [0,1] after reading in dic_fields_load.F
1320    o external_fields_load:
1321      new S/R GET_PERIODIC_INTERVAL to calculate which time-record (and linear
1322       interpolation weights) to use in a periodic time-series ; do not divide by
1323       time-step to convert to integer:
1324       - this fixes case where externForcingPeriod is not multiple of time-step
1325          (Thanks to Christopher L. Wolfe)
1326       - this fixes case where externForcingPeriod is an odd multiple of time-step
1327         (was wrong by half of time-step); update results of tutorial_global_oce_in_p.
1328      store index of time-record which is currently loaded:
1329       - works without any assumption on sequence of calls to EXTERNAL_FIELDS_LOAD ;
1330       - needed for the adjoint but not yet used because of extensive recomputations;
1331         (to be fixed soon)
1332    
1333    checkpoint62v (2011/04/02)
1334    o verification/1D_ocean_ice_column added to test Ian Fenty's
1335      pkg/seaice_growth.F modifications for improving sea ice code differentiability
1336    o update output of exp4, internal_wave, seaice_obcs, tutorial_plume_on_slope
1337      (new velocity statistics after changing maskInW & maskInS definition)
1338    o pkg/generic_advdiff with OBCS:
1339      use maksInW & maskInS in advective flux and in biharmonic diffusion calculation:
1340      equivalent to assumption of no tracer gradient outside the OB region.
1341      This will affect the results if using obcs+biharmonic diffusion.
1342      update output_adm.txt of experiment bottom_ctrl_5x5 (not expected since no obc)
1343    o pkg/obcs:
1344      change definition of maskInW & maskInS: leave OB edges inside (maskIn=1)
1345      (e.g., maskInW(OB_Ie)=1 ) so that velocity normal-component at OB is still
1346      in Interior region. No impact on solution but affects Velocity monitor stats.
1347    o pkg/ptracers (adjoint)
1348      New option AUTODIFF_PTRACERS_SPLIT_FILES for writing separate
1349      tape file for each tracer
1350    o model/inc/src and pkg/autodiff: add parameters that allow to turn
1351      of parts of the adjoint code at run time. For now, there are only
1352      useKPPinAdMode, useGMrediInAdMode, and useSEAICEinAdMode. These
1353      parameters are set in data.pkg.
1354      This is the lazy coward's version of doing this, but still useful for
1355      debugging. In order to do it right, everything needs to be moved to
1356      pkg/autodiff.
1357    o pkg/autodiff: fix global_sum_tile_ad.F by resetting adsumPhi at
1358      the end; this fixes the adjoint balancing code for open boundaries.
1359    o pkg/ctrl:
1360      - change behavior of xx_${varname}period to be analogous to exf-conventions:
1361        xx_${varname}period =   0.,  means time-independent control part
1362        xx_${varname}period = -12., means one-year-periodic monthly control part
1363      - introduce helper routine ctrl_init_rec (part of ctrl_init.F) to
1364        clean up ctrl_init a little, remove unused variables
1365      - ctrl_init: fixed the handling of the start/endrec for obcs-variables
1366      - move "call cal_GetMonthsRec" from s/r ctrl_get_gen to s/r ctrl_get_gen_rec
1367    
1368    checkpoint62u (2011/03/15)
1369    o model/src:
1370      - for the adjoint, change NonLin-FreeSurf initialisation sequence: fill-in
1371        h0Fac from INITIALISE_FIXED and reset hFac to h0Fac in INITIALISE_VARIA ;
1372      - in initialise_varia.F (except for ALLOW_DEPTH_CONTROL) remove 2nd call to
1373        INI_DEPTHS, INI_MASKS_ETC & INI_LINEAR_PHISURF.
1374    o pkg/ctrl/obcs/ecco:
1375      - remove obsolete, unused, and partially broken code:
1376        ctrl_obcsvol/ctrl_obcsbal/ctrl_volflux and code within
1377        ALLOW_CTRL_OBCS_BALANCE
1378      - put a stop statement into ecco/cost_obcsvol.F, but also add
1379        cost_obcsvol to ecco_ad_diff.list
1380    o pkg/ecco: fix counting cost function contributions for obcs (code
1381      by Matt M.) and diffkr for diagnostics
1382    o pkg/ecco, pkg/ctrl, pkg/grdchk:
1383      add cost penalty terms for initial uvel, vvel, eta controls
1384      and I/O for prior error files
1385    o pkg/mdsio:
1386       move mds_check4file.F from eesupp/src to mdsio_check4file.F ; add option
1387       (new argument) to check for tiled file in mdsioLocalDir : this fix the
1388       restart from pickup_som , pickup_dic (& dic_co2atm) with mdsioLocalDir.
1389    o pkg/ctrl:
1390     - ctrl_obcsbal.F, ctrl_obcsvol.F: replace last calls of ctrl_getrec by
1391       ctrl_get_gen_rec, put a stop statement into ctrl_getrec. Remove
1392       unused and superfluous variables
1393     - ctrl_get_gen_rec.F: catch the case of xx_genperiod=0.
1394    o pkg/ecco
1395     - enable adjoint of Stevens OB
1396    o pkg/ctrl/ecco/grdchk:
1397      - remove global declaration of tmpfldx/yz and tmpfldx/yz2.
1398        Fortunately, we do not have any tests for the numerous cpp-flagged
1399        option of "obcs as control parameters" so we will never know
1400        if this is an improvement (but at least now things compile).
1401      - remove an obsolete initialization from ecco_cost_init_barfiles.F
1402      - fix some problems within never used ifdefs to make the code compile
1403    o pkg/obcs:
1404     - Refine Interior mask definition to work with more complex OB (e.g.
1405       if OB_Ie < OB_Iw); In case default setting is not sufficient, allows to
1406       read in Interior mask from file. Check if Interior mask is consistent
1407       with OB list of indices.
1408    o pkg/seaice
1409     - beginning code for a seaice tracer package,
1410       but currently only used for seaice age: SEAICE_AGE
1411       SEAICE_num = 4
1412       iTracer = 1: area-weighted ice age
1413               = 2: volume-weighted ice age
1414               = 3, 4: template for one-year vs. multi-year ice
1415       data.seaice has new namelist SEAICE_PARM03 for arrays related to
1416       SEAICE_num
1417    
1418    checkpoint62t (2011/03/05)
1419    o pkg/obcs:
1420     - obcs_apply_uv.F: change to a 2 steps method, first tangential component;
1421       then normal component. This ensures that the normal component is set
1422       correctly even when it conficts with tangential setting from an other OB.
1423       Affects results of test-experiment seaice_obcs: update the output.txt
1424    o pkg/obcs:
1425     - add code to monitor statistics of dynamical fields at OB.
1426     - take OBCS_BALANCE code out of obcs_calc.F into new S/R OBCS_BALANCE_FLOW :
1427       - fix to OBCS_BALANCE code (right hFac ; deal with simple OB intersection).
1428       - change default: balance the Net inflow through all OB (instead of balancing
1429         each OB separately); keep the old method if setting OBC_balanceFacX < 0.
1430     - switch on useOBCSbalance in dome experiment: only correct Western OB outflow
1431       to match Nortern OB inflow (OBCS_balanceFacN=0).
1432    o pkg/seaice:
1433     - redefined actual sea ice age to be ICEAGE/HEFF ifdef SEAICE_AGE_VOL
1434    o pkg/seaice (seaice_growth v 1.113):
1435     - reverting seaice_growth to v 1.111 in order to have code with exact bit
1436       compatibility with MITgcm_contrib/ifenty/Fenty_seaice_thermo_code_merge
1437       CPP option SEAICE_OCN_MELT_ACT_ON_AREA removed in v 1.112 is reintroduced
1438       runtime flag SEAICEareaFormula is kept but is inactive
1439    o model/src:
1440     - add new param to scale curvilinear grid distance and area when using
1441       a different sphere radius from the grid-files.
1442     - test/check multi-threads EXCH applied to local variable (cg2d_x)
1443    o adjoint:
1444     - enable adjoint of Stevens OB
1445     - add dummy_in_dynamics to enable extraction of ADJrhoinsitu
1446       (a bit delicate because of potentially modified adj. common block structure;
1447       current switch is ALLOW_AUTODIFF_MONITOR_DIAG, could be changed later)
1448    
1449    checkpoint62s (2011/02/15)
1450    o pkg/seaice (seaice_growth v 1.112):
1451     - introduce SEAICEareaFormula run time parameter, which selects the recipe for
1452       computing the ice cover tendency from effective thickness tendencies. Include
1453       Ian Fenty's formula.
1454     - remove 'undef SEAICE_OCN_MELT_ACT_ON_AREA' which may now be achieved using
1455       SEAICEareaFormula.
1456     - simplify notations for the various d_HEFF/d_AREA terms.
1457    o pkg/gmredi:
1458     - add Boundary-Value-Problem bolus transport (Ferrari etal, OM 2010) code
1459       from Christopher Wolfe (UCSD); add partial cell factor in vertical derivative;
1460       add a verification test-run (front_relax.bvp) to test GM_useBVP.
1461    o pkg/seaice (seaice_growth v 1.111):
1462     - for SEAICE_DO_OPEN_WATER_GROWTH, replace Gael's implementation with Ian's.
1463     - the new SEAICE_DO_OPEN_WATER_MELT allows open-water air-sea heat fluxes to
1464       also melt ice.
1465    o pkg/seaice:
1466     - McPhee formula for Ice-Ocean fluxes (provided by Ian Fenty).
1467     - can be used by #define MCPHEE_OCEAN_ICE_HEAT_FLUX in SEAICE_OPTIONS.h
1468    o pkg/cheapaml:
1469     - from Nico Wienders: New version of this package.
1470    o pkg/flt:
1471     - add CPP options to prevent floats to re-enter the opposite side of
1472       a periodic domain (default: keep periodicity)
1473    o pkg/gmredi:
1474     - apply exchange to GM_PsiX,GM_PsiY to get valid values near CS-corners
1475       (needed for multi-dim advection).
1476     - switch on GM Advective form in global_ocean.cs32x15 and update output.txt
1477    o model/src:
1478     - fix wrong re-setting of addMass array (ALLOW_ADDFLUID) for atmospheric run.
1479    o tutorial_tracer_adjsens
1480     - extend to NLFS and replace maskC by hFacC
1481       (change reference output accordingly)
1482    
1483    checkpoint62r (2011/01/24)
1484    o testreport:
1485     - add option -deloutp (-do) to remove output file after successful run
1486     - add option -mfile (-mf) for MPI machile-file and for each test-exp,
1487       extract exact list of procs from this file ; adjust COMMAND by
1488       replacing TR_MFILE & TR_NPROC with local machile-file & Nb of MPI procs.
1489    o pkg/ecco: replace old ineffective way of penalizing deviations from
1490      first guess (of obcs) with code by Matt Mazloff
1491    o pkg/ctrl: add code that allows the use of ALLOW_OBCS?_CONTROL without
1492      exf/cal
1493      - ctrl_init: fix initialisation (computation of diffrec) for obcs-ctrl
1494        and handle case of obcs?period == 0
1495        Not affected by these changes: There is still an inconsistency in
1496        the computation of start/endrec for the obcs variables for ALLOW_CAL
1497        defined (see comment by Menemenlis, 7-Mar-2003)
1498      - make S/R ctrl_get_gen_rec return something meaningful even if
1499        ALLOW_CAL is not defined
1500      - ctrl_getobcs?: simplify code so that it does not need to use
1501                       S/R exf_swapfields
1502    o testreport:
1503       allow to test MPI with different number of processors for each experiment:
1504       create file "SIZE.h.mpi" in each build dir.
1505       Note: update of "-command" argument not yet implemented.
1506    o model/src, pkg/autodiff, pkg/ecco, pkg/seaice:
1507      alleviate the need for additional 3D tapes when using
1508      the non-inear free surface in the adjoint. This is done
1509      by adding an 'update' of hfacc etc. to their current
1510      value at the beginning of forward_step.F.
1511    o pkg/seaice
1512      seaice_lsr: move stress-divergence computations out of outer pseudo-
1513      timestepping loop
1514    o pkg/obcs/obcs_prescribe_read.F: move 'CALL OBCS_EXTERNAL_FIELDS_LOAD'
1515      up, so that the calls of the ctrl_* subroutines are really at the end
1516      of the routine.
1517    o pkg/gmredi:
1518      allow to specify a 2-D horizontal map and a 1-D vertical profil
1519      as scaling factor for Isopycnal diffusivity (Redi) and GM diffusivity.
1520    o pkg/seaice:
1521      move lsr iterations from seaice_dynsolver to seaice_lsr.
1522    o pkg/seaice:
1523      reduce memory footprint of seaice mutldim advection tapes,
1524      by using a 2D tape independent of the generic_advdiff ones,
1525      and setting GAD_AREA=1 etc. rather than GAD_AREA=101 etc.
1526    
1527    checkpoint62q (2010/12/29)
1528    o model/src:
1529      - check horizontal grid-spacing for unset or zero/negative values.
1530      - change AD test hs94.1x64x5 to be truly a 2-D set-up.
1531    o pkg/flt:
1532      - use (recent) mdsio S/R MDS_READVEC_LOC instead of local FLT_MDSREADVECTOR
1533      - precision of input and output files set according to readBinaryPrec
1534        and writeBinaryPrec (previously always 64.b), pickup remains at 64 bits.
1535      - initial float position from tiled file was not converted to index space
1536        (looks like a bug): fixed to make it similar to initial pos. global file.
1537    o global_ocean.cs32x15:
1538       change SIZE.h of AD set-up to get same tiling as with MPI.
1539       Update output_adm, output_adm.thsice (pass@14) & output_adm.seaice (fail@11)
1540    o model/src:
1541       add flag to control printing of domain fields (bathymetry, hFac ...) in
1542       ini_mask_etc (call to plot_fieds_xy*).
1543    o pkg/thsice:
1544       if useEXF, some forcing fields are not valid in overlap: fixed by computing
1545       over the interior only + apply EXCH at the end (like with SEAICE advection).
1546    o pkg/mdsio:
1547      - add 2 arguments to S/R MDS_PASS_R4/8toRL/S for overlap size of buffer
1548        to copy to/from, so that it can be used to replace MDS_PASS_WH_R8toRL/RS.
1549      - change barrier call for safe multi-threads access to 3-D shared buffer.
1550      - MDS_READ/WRITEVEC_LOC use buffers from MDSIO_BUFF_3D.h (instead of local ones)
1551      - replace call to MDS_PASS_WH_R4/8toRL with call to MDS_PASS_R4/8toRL and
1552        remove the 4 S/R MDS_PASS_WH_R4/8toRL/S.
1553    o pkg/flt:
1554      - add fourth-order Runge-Kutta integration
1555      - add basic exch2 support (only 1 facet supported so far!)
1556    o pkg/mdsio+rw:
1557      new S/R to read local (or tile independent) vector (read counterpart of
1558       mds_writevec_loc, and front-end write_glvec_rl/rs).
1559    o global_ocean.cs32x15: additional input_ad.seaice experiment
1560        that uses pkg/seaice rather than pkg/thsice.
1561        (using multidim advection for seaice)
1562    o towards more F95 syntax for array specification in namelist:
1563      - change "data.diagnostics" (data.ptracers was changed before checkpoint62p)
1564        of all verification experiments.
1565           e.g.:    line: fields(1,3)='ETAN    ','ETANSQ  ',
1566          was changed to: fields(1:2,3)='ETAN    ','ETANSQ  ',
1567      - finish adding "-DNML_EXTENDED_F77" to DEFINES list in pgf77 and g77 optfiles
1568    o global_ocean.cs32x15: additional input.seaice experiment
1569        that uses pkg/seaice rather than pkg/thsice.
1570    
1571    checkpoint62p (2010/12/17)
1572    o pkg/thsice: rename (ad tape index) iicekey as ticekey, and move it
1573        to THSICE_SIZE.h to avoid conflict with pkg/seaice.
1574    o pkg/seaice: add seaice_diffusion.f seaice_map_thsice.f to adjoint.
1575        allow for use of multim. advection in seaice adjoint.
1576    o pkg/seaice: add diagnostics for snow precipitation and sublimation flux
1577      - first attempt to close budgets by taking into account the freshwater
1578        flux implied by the sublimation of snow and ice. So far only the
1579        volume budget is closed, turn on with soon-to-be-retired-again CPP-Flag
1580        SEAICE_ADD_SUBLIMATION_TO_FWBUDGET
1581    o eesupp/src:
1582      new S/R with new option (NML_EXTENDED_F77) to change array specification
1583      from F95 standard to commonly accepted extended F77 form.
1584      This would allow to use F95 syntax in namelist (needed with gfortran 4.4.5)
1585      and to revert back to the original syntax (with -DNML_EXTENDED_F77)
1586      for less tolerant f77 compiler (e.g., pgf77, g77).
1587    o globalFiles:
1588      commented out in parameter file "data" since it's not safe with MPI
1589      (e.g., wrong on aces); keep it if useSingleCpuIO=T (but not doing much
1590      in this case); no longer commented out in restart test (tst_2+2).
1591    o add adTapeDir to specify a special directory where adjoint tapes are
1592      written/read (adread_adwrite.F). adTapeDir is specified in data/PARM05
1593      and cannot be used together with mdsioLocalDir.
1594    o nesting pkgs:
1595      - packages_init_variables : put call to OBCS_INIT_VARIABLES in last position
1596      - update Gianmaria's Nesting pkgs (from Contrib/nesting_sannino)
1597      - add parameter files + utils dir + output from short run on beagle.
1598    o pkg/seaice:
1599        fix seaice_growth.F store directives; update results of exp. lab_sea.ad
1600    o pkg/seaice: explicitly store tsurfloc in seaice_solve4temp.F to avoid
1601      unnecessary copying in adjoint code, requires new parameter NMAX_ITER
1602    
1603    checkpoint62o (2010/11/25)
1604    o pkg/exf:
1605      - change CPP option EXF_VERBOSE to run-time logical param exf_verbose.
1606    o pkg/seaice:
1607      - seaice_ocean_stress: split a loop for better vectorization of the
1608        adjoint code
1609      - seaice_growth.F: fix bug in conservation of freshwater connected to
1610        capping of heff, put contribution into d_HEFFbyNEG
1611      - replace irritating parameters SEAICE_latentWater/Ice and SEAICE_sensHeat
1612        by something more sensible (parameters that are what their name implies)
1613      - change some defaults, so that by default exf-parameters are used for
1614        things like rhoAir, cpAir,latent/sensible heat parameters, in order
1615        to reproduce the old results, many data.seaice now contain funny values
1616        for cpAir and latent heat of sublimation
1617    o packages_readparms.F: move exf_readparms up in line so that
1618        exf-parameters are visible for other packages (e.g. seaice)
1619    o debugMode & debugLevel=2:
1620      - differentiate between debugMode & debugLevel=2:
1621        debugMode: controls printing of debug messages (sequence of S/R calls).
1622        debugLevel: controls printing of algorithm intermediate results and stats.
1623      - remove "if debugLevel=2 => debugMode" but keep "debugMode =>  debugLevel=2";
1624        => allows to print debug-stats without all sequence of call messages.
1625      - switch control of debug print from debugLevel to debugMode in many S/R.
1626    o pkg/obcs (obcs-sponge):
1627        fix bug that was introduced on Oct 25 (in dynamics.F v1.151): put back the
1628        call to OBCS_PRESCRIBE_EXCHANGES (need to exch gU,gV when using obcs-sponge)
1629    o pkg/generic_advdiff:
1630      - record overlap minimum size for each advection scheme;
1631      - refine criteria on overlap minimum size;
1632      - check and stop (in gad_check) if overlap size is too small.
1633    o pkg/obcs:
1634      - with ptracers: remove multiple calls to obcs_apply_ptracer (only done
1635        once, in ptracers_implicit.F)
1636      - with seaice: remove test on empty file name in obcs_apply_seaice (always
1637        apply OB values when tile has OB)
1638    o model/src, coriolis setting:
1639      - integer parameter "selectCoriMap" (=0,1,2) replaces 3 logical
1640        useConstantF, useBetaPlaneF, useSphereF ; can now read coriolis from
1641        files (selectCoriMap=3) with any grid.
1642      - add parameter "fPrime" for constant second Coriolis coeff (default=0).
1643    o pkg/seaice/seaice_growth.F:
1644        a few cosmetic changes that reduce the number of lines of code
1645    o pkg/obcs: add boundary conditions following Stevens (1990)
1646      - the code follows old MOM/NAOSIM code
1647      - so far it is only implemented for the eastern and western boundaries
1648        and NOT for pTracers
1649    o pkg/rbcs:
1650      - replace rbcsInIter by rbcsForcingOffset, the time in seconds at the
1651        beginning of the first rbcs forcing period.
1652      - add option rbcsSingleTimeFiles that makes rbcs read forcing data like the
1653        offline package, i.e., one file per time, labeled by iteration number;
1654        deltaTrbcs sets the timestep with which the data was generated;
1655        rbcsIter0 is the forcing iteration corresponding to rbcsForcingOffset.
1656      - rbcsForcingCycle=0 makes forcing non-cyclic.
1657      - make arithmetic safe for negative times and odd forcing periods.
1658    
1659    checkpoint62n (2010/11/09)
1660    o pkg/seaice:
1661        fix masking in free-drift S/R ; update results of exp. lab_sea.fd
1662    o pkg/obcs:
1663       New S/R to copy tracer value from the OB location to narrow band region
1664        (width = same as overlap) beyond the OB: preserve OB value (needed for
1665        high-order scheme) which were overwritten by EXCH call if in overlap
1666        region. Applied to theta, salt, ptracer and advected seaice variables.
1667       With seaice: use maskInC in similar way as in gad_advection.F,
1668        in seaice_advection.F and advect.F.
1669       Update output of experiment seaice_obcs and change exp4 to test OBCS with
1670        4th order Adv.Scheme. for pasive salt and ptracer.
1671    o tools/genmake2:
1672      - when looking for an optfile (not specified), only search for Fortran compiler
1673        (remove sym-link test + setting of CPP + makedepend check + C-compiler check)
1674      - in get_fortran_c_namemangling: use "$CC $CFLAG" to compile C test programm
1675        (instead of "$MAKE genmake_test.o" since an existing Makefile can be wrong)
1676      - set default for CPP to "cpp -traditional -P" (was the case without specifying
1677        an optfile, but otherwise default was just "cpp".
1678      - comment out PLATFORM=$p_PLATFORM (no idea where p_PLATFORM comes from)
1679      - when "CC" is not set in the optfile, look for possible C compiler
1680        (instead of just setting CC=cc)
1681      - put back version v.169 modif (from 2008/02/15), was dropped in v.173 changes:
1682        => add a ".F" to ".o" rule for source files with no "#include" (such as
1683           port_rand.F); otherwise, default ignores FOPTIM and just uses FFLAGS.
1684      - move gfortran before g77 in list of possible Fortran compiler (consistent
1685        with reference compiler switch from g77 to gfortran)
1686    o pkg/seaice:
1687      o remove SEAICE_OLD_AND_BAD_DISCRETIZATION-code, add a test to
1688        seaice_check that stops the model, when the CPP flag is used.
1689      o seaice_growth.F: make capping of ice volume conserving by returning the
1690        capped ice as freshwater to EmPmR. This does not change the verification
1691        experiments but will change runs where the capping is acutally active
1692    o change reference platform+compiler from faulks+g77 to baudelaire+gfortran
1693      (except the 2 fizhi test exp.); update output of exp.: bottom_ctrl_5x5,
1694         global_ocean.cs32x15 (icedyn, thsice, AD thsice), global_ocean_ebm (AD),
1695         lab_sea (fd, hb87, salt_plume), MLAdjust (3/5) and vermix (dd)
1696    o tools/genmake2:
1697      - merge genmake_warnings & genmake_errors into 1 log file: "genmake.log")
1698      - change DUMPSTATE default to false (can use "-ds" option to switch it to T)
1699      - clean previous genmake log files before anything else.
1700      - change Makefile to remove testreport log files (*.tr_log) and genmake log
1701        files only with "CLEAN" target (instead of "Clean");
1702    o pkg/generic_advdiff:
1703      Change OBCS in multiDim advection (gad_advection.F):
1704       Use maskInC to prevent intermediate update of tracer-field in OB regions,
1705       thus keeping current-time-step OB values; and remove the call to OBCS_APPLY
1706       which were applying future time-step OB values.
1707      This way, all explicit calculations use current-time-step OB values
1708       (simpler and more consistent).
1709      Affects results when set-up uses time-varying OBC and multi-dim advection;
1710       update output of experiment seaice_obcs.
1711    o pkg/seaice:
1712      move OPTIONS (formerly locally defined) to SEAICE_OPTIONS.h:
1713       this includes SEAICE_GROWTH_LEGACY (+ SEAICE_DO_OPEN_WATER_GROWTH &
1714         SEAICE_OCN_MELT_ACT_ON_AREA ) and SEAICE_SOLVE4TEMP_LEGACY.
1715      Default (pkg/seaice/SEAICE_OPTIONS.h) is to define SEAICE_SOLVE4TEMP_LEGACY
1716       but leave SEAICE_GROWTH_LEGACY undef ; For now, keep verification exp
1717       unchanged (SEAICE_GROWTH_LEGACY defined in */code*/SEAICE_OPTIONS.h)
1718    o pkg aim (2010/10/26):
1719      - Introduce ALLOW_INSOLATION, moving toward a more general incoming solar radiation
1720        formulation with obliquity, eccentricity, ... as run-time parameters,
1721      - Introduce diagnostics for top-of-the-atmaophere incoming solar radiation and
1722        upward shortwave radition at the surface (all-sky and clear-sky).
1723    o pkg/obcs:
1724      - writing sections with globalFiles=T does not work: switch to tiled-files
1725        when writing sections for OBCS (change pkg/rw/write_rec.F accordingly).
1726      - fix index bug (OB_Ie -> OB_Iw_) in obcs_apply_uvice.F
1727      - apply OBCS_SEAICE_COMPUTE_UVICE to both uice and vice at all obcs
1728    
1729    checkpoint62m (2010/10/21)
1730    o pkg/seaice: vectorize seaice_solve4temp.F
1731      - move iterations loops outside of i/j-loops
1732      - requires 2D arrays for TB and effConduct
1733      - add 2D iceOrNot to replace HICE_ACTUAL.GT.0, as HICE_ACTUAL is
1734        modified in this routine
1735      - a little bit of clean up, adjusting indentation, etc.
1736      - replaced a few TEN**a by exp(a*log(10.)) in new code for better
1737        performance and '**TWO' by '**2' (because TWO is a float),
1738        replaced ONE, ZERO
1739    o eesupp/src:
1740       fix flow dir for exch1_z_RX_cube, exch1_uv_RX_cube & exch1_bg_RX_cube
1741    o pkg/seaice/seaice_growth.F
1742      Revision 1.89 of seaice_growth.F completes the overall october 2010 revision and
1743      merging process. The merged routine has two branches, and one activates the 'evolution'
1744      branch by setting SEAICE_GROWTH_LEGACY to undef (at the top of the routine for now).
1745      In summary, here is what the '10/10 revision' did consist of
1746        part 1: seaice_growth.F revisions 1.71 to 1.75
1747          - Preliminary seaice_growth.F clean-up, keeping test results strictly unchanged.
1748            The emphasis here was on improving readability (e.g. by trying to use meaningful
1749            variable names) and modularity (e.g. by adding arrays to store heff etc. updates).
1750        part 1.5:
1751          - revising the lab_sea experiment to make it a more useful (i.e. stable
1752            and representative of an actual model run). This was done by generating a
1753            (winter) pickup to start from, switching back the main experiment dynamic
1754            solver from evp to lsr, having one of the experiments use the free drift solution.
1755        part 2: seaice_growth.F revisions 1.76 to 1.85
1756          - Sorting out hard-coded constants that prevented heat and fresh water conservation.
1757          - Sorting out the various fields units and sign (set early on and reset at the end)
1758            to avoid numerous scalings/re-scalings. By v1.85 the basic unit for ice, heat and
1759            fresh water stock is 'effective ice meters', and >0 implies more ice/snow.
1760          - Using tendency terms arrays (d_HEFF* etc.) to alleviate remaining code locks,
1761            and simplifying logical expressions to further improve readibility.
1762        part 3: seaice_growth.F revisions 1.86 to 1.89
1763          - Re-organize the blocks of code more logically.
1764          - Merging the '_if.F' pieces that add something new.
1765    o pkg/thsice:
1766      - vectorize thsice_solve4temp and thsice_get_exf.
1767        Problem: thsice_solve4temp has an unvectorizable statement that
1768        might also be problematic for TAF
1769      - thsice_get_exf: add the ALLOW_BULK_LARGEYEAGER04 CPP-flag. This
1770        does not change the verifcation experiment, but will change all
1771        experiments that have this flag undefined (not tested in verification);
1772        a little reorganization to save a few 2D fields and recomputations
1773      - 1st step of revisiting thsice adjoint (major recomp. sorted out)
1774      - 2nd step:  fix some store dirs
1775        o seems to work somewhat, i.e. using ifort but not g77
1776        o likely cause are incomplete init. or recomputation
1777        o start verification/global_ocean.cs32x15/input_ad.thsice
1778    o pkg/obcs: add support for exch2
1779      - the position of the boundary and prescribed values are specified using
1780        a global domain with exch2 facets stacked
1781        - in x for N,S boundaries (like W2_mapIO=-1)
1782        - in y for E,W boundaries (so E,W boundaries do not overlap)
1783    o pkg/mdsio: add support for writing global sections with exch2
1784        file layout is as for obcs described above:
1785        - for x-z sections, facets are stacked in x (like W2_mapIO=-1)
1786        - for y-z sections, facets are stacked in y
1787    o pkg/thsice:
1788       - change a few routines for better vectorization: thsice_albedo.F,
1789         thsice_step_temp.F, and in thsice_calc_thickn.F. Results are
1790         not affected, but in particular the latter routine has changed
1791         dramatically (not necessarily easier to read now).
1792       - re-arrange calculation in THSICE_SOLVE4TEMP: move outside of i,j loops
1793       iteration loop and call to S/R THSICE_GET_BULKF & THSICE_GET_EXF.
1794    o verification/lab_sea:
1795      - overhaul of the forward model experiments. The main motivation
1796        for this revision is that lab_sea has proven quite fragile (when
1797        changing the sea-ice code, and switching platforms) to a point
1798        when failures were very hard to attribute to specific code problems.
1799      - the suspected reason for this fragility is noise amplification by evp so,
1800        to start with, we decided to replace evp with lsr in the main experiment.
1801      - the input.lsr experiment thus became obsolete and was removed.
1802      - it was replaced with the input.fd experiment that uses an
1803        analytical "free drift" solution as the ice velocity field.
1804      - Taken together, input (lsr), input.fd (free drift) and input.hb87 (evp)
1805        will hopefully allow us to discriminate problems due to dynamic solvers
1806        from problems due to the thermodynamic code. input.salt_plume (lsr) allows
1807        us to test additional options, along with the salt plume package.
1808      - Finally a pickup was generated (at the end of a one year run) to
1809        make the tests more representative of an actual model run. Previously
1810        the tests starting point was a 1m thickness of ice everywhere.
1811    o pkg/seaice:
1812      - introducing S\R seaice_freedrift.F that compute the
1813        analytical solution to an approximate ice momentum
1814        equation (i.e. the simple stress/coriolis balance).
1815      - define SEAICE_ALLOW_FREEDRIFT to trigger the computation
1816        of the free drift velocity field, and enable its use.
1817        To actually use the free drift solution as the model ice
1818        velocity field set SEAICEuseFREEDRIFT to .TRUE. in data.seaice.
1819    o move "useOASIS" from PARAMS.h to EEPARAMS.h and read it from "eedata"
1820    
1821    checkpoint62l (2010/10/04)
1822    o pkg/seaice:
1823      -fix the USE_ORIGINAL_SBI version (for variable freezing point);
1824      -use "celsius2K" in SEAICE_VARIABLE_FREEZING_POINT and in new
1825       version (with USE_ORIGINAL_SBI undef);
1826    o add hooks for new packages OASIS, the package will follow
1827      (hooks exclude the seaice pkg for now)
1828    o pkg/autodiff: ALLOW_AUTODIFF_WHTAPEIO
1829      Option to use mdsio_read_whalos.F/mdsio_write_whalos.F,
1830      rather than mdsio_readvector.F/mdsio_writevector.F, within
1831      adread_adwrite.F to read/write adjoint-related tapes to disk.
1832    o eesupp and pkg/mdsio: ALLOW_WHIO
1833      Option to write/read 2D fields to files including tiles halos.
1834      The main purpose is for adjoint related "tape I/O".
1835      The secondary purpose is for debugging phases.
1836      A word on those rather specifically intended purposes.
1837      The code was meant to be stripped down to the bare minimum.
1838      Typically, there is a unique and basic mapping to the global
1839      buffer (tile by tile, then proc by proc, then level by level), and
1840      byteswaps and meta-files are omitted. Indeed the (*_WH*) code is not
1841      meant to generate user friendly outputs of various shapes and forms.
1842      Rather it is intended, for the knowledgeabale developers,
1843      to be largely independent of the many mdsio options, to allow
1844      outputs of tiles+halos in debugging phases and in adjoint runs,
1845      and to allow some flexibility in tuning (adoint) I/O depending on each
1846      file system behavior. With regard to tuning, most of the potential knobs
1847      (to leave files open, to allocate the I/O indep. of usesinglecpuio,
1848      to specify directories, to specify the typical size of I/O calls, etc.)
1849      are not yet included, and will be added if they prove useful.
1850    o pkg/seaice:
1851       fix uninitialised arrays in USE_ORIGINAL_SBI version of seaice_solve4temp.F
1852    o pkg/seaice:
1853       new S/R seaice_solve4temp.F: this is the merged version of Ian Fenty
1854       code (seaice_budget_ice_if.F) which enable to recover old standard
1855       code (seaice_budget_ice.F) when option USE_ORIGINAL_SBI is defined.
1856       temporary: add "#define USE_ORIGINAL_SBI" at the top of seaice_solve4temp.F.
1857    o model/src (rStar):
1858       use simple average (not area weighted) of rStarFac at U,V point when using
1859       vectorInvariant and selectKEscheme=1,3 (consistent with mom. vertical advection)
1860       update output of exp. fizhi-cs-32x32x40 and fizhi-cs-aqualev20.
1861    
1862    checkpoint62k (2010/09/17)
1863    o adjoint
1864       * changed verification/global_ocean.cs32x15 ; adjoint now tests
1865         Adams-Bashforth 3 + NLFS + RSTAR
1866       * some more modifs required for ECCO-GODAE v4
1867    o pkg/seaice
1868       add SEAICE_AGE_VOL option to use volume instead of area for
1869       integrating SEAICE_AGE
1870    o model/src:
1871       first check-in of sigma & hybrid-sigma coordinate code ; also includes
1872       non-linear free-surface parts ; but pressure-gradient not yet coded.
1873    o pkg/ptracers:
1874       option for ptracer to convert Salt Relax into additional EmP.
1875        tested in exp. global_ocean.90x40x15.dwnslp (update output)
1876    
1877    checkpoint62j (2010/08/25)
1878    o pkg/ggl90:
1879       other minor changes: remove 3-D temp array gTKE (+ add argument myIter)
1880    o pkg/dic: car_flux.F, phos_flux.F
1881      - reduce number of exp-calls in order to improve performance
1882      - clean up a little (replace fields by their macros, etc., fix
1883        typo in CPP-flag)
1884    o pkg/ggl90: minor changes
1885      - GGL90diffKrS was removed --> always use GGL90diffKr
1886      - GGL90viscAr was removed --> replaced with GGL90viscArU, GGL90viscArV
1887      - hack of mxlMaxFlag=2 --> ensure mixing between first and second level
1888        (commented out for now)
1889      - change in max/min operations to ensure that smoothing is ok
1890      - smoothing of GGL90viscAr was moved to ggl90_calc.F (as done for GGL90diffKr)
1891      - always use diffKrNrT as background profile (i.e. never use diffKr field)
1892    o pkg/cfc: bug fix, AREA(i,j,1,bi,bj) -> AREA(i,j,bi,bj)
1893    o pkg/dic:
1894      - model/src/impldiff.F: if TARGET_NEC_SX, extend loop ranges for better
1895        vectorization
1896      - small bug fix in insol for the unlikely case of a cartesian grid
1897      - towards vectorizing the dic package: bio_export.F, car_flux.F, phos_flux.F
1898        + now vectorize, which also removes adjoint recomputations;
1899        + replace integer maksp1 by _RL maskp1
1900        + replace a**x by exp(x*log(a)) in phos_flux.F for speed
1901    
1902    checkpoint62i (2010/07/21)
1903    o pkg/flt:
1904      - with OBCS: stop floats which enter the OB region
1905    o model/src:
1906      - use tempVertAdvScheme & saltVertAdvScheme (instead of horizontal ones)
1907        for implicit vertical advection.
1908    o pkg/seaice:
1909     - account for melting in seaice age evolution.
1910     - remove double counting of seaice ridging effect on seaice age.
1911    
1912    checkpoint62h (2010/06/18)
1913    o pkg/exch2:
1914     - remove exch2_*xy_rx files: call was replaced with exch2_*3d_rx(myNz=1).
1915    o tools/genmake2
1916      - remove "-pdefault" option: redundant with the use of "packages.conf";
1917      - remove file pkg/pkg_default : set the default as a pkg group
1918        ("default_pkg_list") defined in pkg/pkg_groups;
1919      - fix for case pkg/pkg_depend is missing (was hanging before);
1920      - add option "-pgroups" to specify a different pkg_groups than the default.
1921    o verification/adjustment.cs-32x32x1:
1922       add a "minimal" set-up test (code_min & input_min) which only compiles
1923       eesupp/src and the 2 pkgs (exch2 & debug) which don't need model/src & inc.
1924    o tools/genmake2
1925      - extend pkg_depend rules to model & eesupp (e.g., if model depend on [pkg]))
1926      - fix details of checking for mnc & profile pkg when NetCDF is unavailable.
1927    o pkg/exf: merge exf_bulk_largeyeager04 into exf_bulkformulae because these
1928      files are nearly the same anyway.
1929      Step 1: make exf_bulkformulae look like exf_bulk_largeyeager04:
1930       - redefinition of tau(i,i) (by a factor of ustar)
1931       - 1./exf(Const/T) -> exf(-Const/T) (big change in the results)
1932       - replace rhonil by rhoConstFresh in computation of evap (bug fix)
1933       - replace u/vstress=tau*rd*ws*cw by tau*rd*u/vwind (changes results)
1934       - replace
1935         rd(i,j)= rdn(i,j)/(exf_one - rdn(i,j)/karman*psimh )
1936         shn    = sh(i,j,bi,bj)*rd(i,j)/rdn(i,j)
1937         by
1938         shn    = sh(i,j,bi,bj)/(exf_one - rdn(i,j)/karman*psimh )
1939         (changes results)
1940       -> exf_bulkformulae v1.22,
1941          update verification experiments lab_sea, offline_exf_seaice, seaice_obcs
1942          (lab_sea: output.hb87.txt 1.11, output.lsr.txt 1.25, output.salt_plume.txt 1.13,
1943                    output.txt 1.63
1944           offline_exf_seaice: output.seaicetd.txt 1.7
1945           seaice_obcs: output.txt 1.10)
1946      Step 2: do the actual merge and remove exf_bulk_largeyeager04.F
1947       -> exf_bulkformulae v1.23,
1948          unfortunately requires updating lab_sea.salt_plume (6 matching digits),
1949          and global_ocean.cs32x15.icedyn (only 11 matching digits)
1950      Also update output_adm of exp. lab_sea (all 4) and offline_exf_seaice.
1951    o adjoint of exch-1:
1952     - pass high-level EXCH S/R through TAF (eesupp/src/exch_ad_diff.list)
1953       (note: was already like this when using EXCH-2) and remove flow dir
1954       and hand-written AD version of high-level EXCH S/R (pkg/autodiff);
1955     - provide flow-dir for low-level exch1 S/R (eesupp/src/exch1_ad.flow);
1956     - update pkg/exch2 diff list.
1957    
1958    checkpoint62g (2010/05/19)
1959    o eesupp/src (exch-1):
1960     - split exch_rx.F into Forward S/R (exch1_rx.F) and Adjoint S/R (exch1_rx_ad.F)
1961       and remove argument "simulationMode"; same thing for all exch_*rx_cube.F
1962       (renamed to exch1_*rx_cube.F).
1963     - change accordingly exch_*_rx.template and AD version in pkg/autodiff
1964       to call new exch1 S/R ; update Makefile and .cvsignore.
1965     - replace call to exch2_xy_rx S/R with exch2_*3d_rx(myNz=1) (will remove
1966       exch2_xy_rx later)
1967      Note: after updating your code, need to run "make clean" in eesupp/src
1968    o test experiment bottom_ctrl_5x5:
1969       new output_adm.txt with fewer grdchk & less monitor output.
1970    o model/src:
1971      remove the call to ini_cori in initialise_varia.F (just keep the usual one
1972       in initialise_fixed.F). More consistent with coriolis & horizontal grid
1973       beeing treated in the same way (ini_grid is not called a 2nd time).
1974    o pkg/exf:
1975      - rewrite exf_bulk_largeyeager04.F for better vectorization, changes
1976      global_ocean.cs32x15/input.icedyn (11 digits of agreement), updated
1977      - fix adjoint (used worked for ALLOW_ATM_WIND defined, works for this now)
1978      - cosmetic changes to exf_bulkformulae.F to make it look more like
1979        exf_bulk_largeyeager04.F
1980    o eesupp/src (exch-1):
1981      - Fix AD EXCH code for 2-D domain special cases (Nx=1 or Ny=1).
1982      - Separate buffer filling and MPI sending: allow EXCH-1 to work for local
1983        array (non-shared) when using MPI+MTH. Also reduces number of BARRIER
1984        (even without using MPI).
1985      - Message mode: move RecvAck setting (indicator of buffer being ready)
1986        from send_put to recv_get S/R (was useless before, but not sure if
1987        it's much more useful now);
1988      - Switch the order of sync: MPI-proc 1rst and then threads;
1989      - take out spin-waiting code (#undef EXCH_USE_SPINNING), use BARRIER instead.
1990      - fix AD code for communication mode ='get' (but not used).
1991    o model/src:
1992      initialise dPhiHydX,dPhiHydY inside calc_grad_phi_hyd.F (so that TAF does
1993      not drop it in S/R mddynamics, producing NaN in hs94.1x64x5 AD-test exp).
1994    o utils/matlab/rdmnc.m: adapt to be able to use the generic matlab netcdf API
1995    o pkg/ctrl: require a specific set of control variables and exf-flags for
1996      adjoint of seaice (stop in ctrl_check.F if conditions are not satisfied)
1997    o model/src:
1998     a) 1rst version of a new driver S/R to turn-off output freq and flags after the
1999       1rst forward sweep, to avoid over-writing output files during recomputations
2000       recomputations (& grdchk); called from cost_final.F (& ctrl_init_ctrlvar.F ?)
2001     b) 2nd version:
2002      - add specific pkg S/R for seaice & ptracers (called from S/R TURNOFF_MODEL_IO);
2003      - switch-off more output flags (exf_monFreq, chkPtFreq, dumpInitAndLast,
2004         writePickupAtEnd) + seaice & ptracers output;
2005      - do not switch off MNC flags (otherwise, won't get admonitor netcdf file)
2006    o model/src:
2007      - new S/R rotate_uv2en_rl (..._rs) that rotates vector fields.
2008    o pkg/exch2:
2009      - remove "simulationMode" from arg. list of S/R EXCH2_RX1,2_CUBE ;
2010      - add argument "signOption" to EXCH2_RX1_CUBE (will be needed for SM exch).
2011    o pkg/autodiff & exch2:
2012      process exch_uv_agrid_3d_rx.f & exch2_uv_agrid_3d_rx.f through TAF
2013      (for now, only if ALLOW_EXCH2 is defined).
2014    o pkg/autodiff:
2015      - include PACKAGES_CONFIG.h in exch*ad.flow & exch*ad.F
2016        (not supposed to be in CPP_OPTIONS.h) to get ALLOW_EXCH2 defined correctly.
2017       + clean-up comments (_RS is not always real*4)
2018      - fix bug in ADEXCH_UV_3D_RX (without EXCH2, was calling the forward exch S/R)
2019      - add a stop in ADEXCH_UV_AGRID_3D_RX if trying to use it with EXCH2:
2020        was calling a forward exch2, which is wrong ; used in SEAICE & EXF pkgs.
2021    o testreport (AD-tests):
2022      no longer link files from dir "../input" (1rst link files from
2023      "../input_ad.[xx]" if secondary test "xx" and then from "../input_ad")
2024    
2025    checkpoint62f (2010/04/29)
2026  o model/src/the_main_loop.F:  o model/src/the_main_loop.F:
2027    adjust store directives for seaice evp and multicategory according to    adjust store directives for seaice evp and multicategory according to
2028    pkg/ecco/the_main_loop.F    pkg/ecco/the_main_loop.F
2029  o adjoint:  o adjoint:
2030    global_sum_ad was incomplete (noted many times by many people ;)    global_sum_ad was incomplete (noted many times by many people ;)
2031    nice description by Jean U. as follows:    nice description by Jean U. as follows:
2032    * allreduce(var) in global_sum.F can be interpreted as    * allreduce(var) in global_sum.F can be interpreted as
2033      reduce(sum) followed by broadcast of sum.        reduce(sum) followed by broadcast of sum.
2034    * The adjoint of that is    * The adjoint of that is
2035      sum(adjoint) followed by broadcast(summed adjoint value)      sum(adjoint) followed by broadcast(summed adjoint value)
2036      or in other words, allreduce(sum, adjoint vars)      or in other words, allreduce(sum, adjoint vars)
2037    We were missing the sum(adjoint)!    We were missing the sum(adjoint)!
2038    Benign, except(!) for "global" scalars appearing in tile loops (bi,bj)    Benign, except(!) for "global" scalars appearing in tile loops (bi,bj)
# Line 117  o tools/build_options: Line 2136  o tools/build_options:
2136      but keep the former optfile for few weeks for smooth transition      but keep the former optfile for few weeks for smooth transition
2137  o pkg/ecco  o pkg/ecco
2138    - allow user defined cost function contributions    - allow user defined cost function contributions
2139          CPP: ALLOW_USERCOST_CONTRIBUTION       CPP: ALLOW_USERCOST_CONTRIBUTION
2140          USAGE: compute contributions in cost_usercost_all.F       USAGE: compute contributions in cost_usercost_all.F
2141    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.
2142        the two options are complementary.        the two options are complementary.
2143  o pkg/smooth  o pkg/smooth

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