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revision 1.1484 by jmc, Mon Aug 1 20:47:39 2011 UTC revision 1.1730 by jmc, Wed Sep 5 15:07:03 2012 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint63s (2012/09/05)
8    o pkg/exch2:
9      - add "if usingMPI" where it was missing (in exch2_rx?_cube*.template)
10        + to remove ALWAYS_USE_MPI in source code that TAF does not see.
11      - make new S/R W2_MAP_PROCS out of w2_eeboot.F to setup exch2 CommonFlag
12        and tiles to process mapping.
13      - re-arrange 3 header files (W2_EXCH2_PARAMS.h, _BUFFER.h & _TOPOLOGY.h)
14        moving /EXCH2_FILLVAL_RX/ & /W2_EXCH2_COMMFLAG/ to W2_EXCH2_TOPOLOGY.h;
15        rename "exch2_tProc" to "W2_tileProc" and move seting of e2FillValue_RX
16        from w2_eeboot.F to w2_readparms.F.
17    o eesupp/src:
18      - set exchNeedsMemsync & exchUsesBarrier according to "usingMPI" (instead of
19        ALWAYS_USE_MPI) + moved from ini_communication_patterns.F to eeset_parms.F;
20        also move setting of exchCollectStatistics from exch_init.F to eeset_parms.F
21      - in eedie.F and all_proc_die.F, always call MPI_FINALIZE when ALLOW_USE_MPI
22        is defined (remove condition on usingMPI) to match cases where MPI_INIT
23        has been called.
24      - fix bug I put in previous modif of exch_sm_3d_rx.template (not much used);
25      - change default (non-MPI) value of myPid (from 1 to 0) to match MPI settings
26        (so that on 1 proc, get same myPid independently of usingMPI)
27      - add a stop if multi-procs but usingMPI=F ; stop also if usingMPI=T and
28        useCubedSphereExchange with EXCH-1 (safer).
29      - add "if usingMPI" where it was missing (+ start to remove ALWAYS_USE_MPI).
30    o pkg/ggl90:
31      - fix bug in filling corner mask array "mskCor" (FILL_CS_CORNER_TR_RL call)
32        used in ALLOW_GGL90_SMOOTH code.
33    o pkg/flt:
34      - fix typo in FLT_WITHOUT_Y_PERIODICITY (the effect was to ignore stopping
35        floats at the Southern end of the domain).
36    o eesupp/inc:
37      - add a list of CPP-options which can be set by Makefile (DEF_IN_MAKEFILE.h);
38        but not used (and not to be used) anywhere, just for documentation.
39    o pkg/autodiff, exf, ptracers & seaice (AD & TL output):
40      - comment out the very nasty "writeBinaryPrec = writeStatePrec" line, since:
41        a) can damage previously written records in any other multi-record files.
42        b) if needed, can easily do it cleanly, by calling S/R WRITE_REC_3D_RL/S.
43    o tools/genmake2:
44      - define variable MAKE within Makefile and use it in place of 'make';
45      - update AD_CONFIG.h (if needed) before building any of the executable
46        (forward, adjoint or tangent-lin); this involves a 2nd invocation of make;
47        and add the usual #ifndef/#define AD_CONFIG_H in AD_CONFIG.h;
48      - always print usual warning comment 'this file is automatically generated'
49        from script convert_cpp_cmd2defines (+ remove this warning from genmake2).
50    o pkg/cheapaml:
51      - updated to correspond to the code used in accepted paper (Nico Wienders).
52    o pkg/exf:
53        added run time switch useAtmWind to replace ALLOW_ATM_WIND cpp switch.
54        ALLOW_ATM_WIND now just sets the useAtmWind default (see exf_readparms.F)
55        and force defines ALLOW_BULKFORMULAE (EXF_OPTIONS.h).
56    o pkg/exf, autodiff, ctrl, ecco and seaice:
57        remove ALLOW_ATM_WIND brackets, or replace them with useAtmWind ones.
58    o pkg/ctrl, ecco:
59        allow to compile both ALLOW_U/VSTRESS_CONTROL and ALLOW_U/VWIND_CONTROL.
60        Depending on useAtmWind, one is inactive, and the other is active (see
61        exf_getffields.F/exf_getsurfacefluxes.F).
62    o tools/genmake2:
63      - improve error msg when failing in 2nd test of check_for_broken_Ff
64      - fix option '-makefile' short-name (-mf according to genmake2 -help)
65      - source local config file "genmake_local" just after processing the genmake2
66        command arguments (previously done before processing arg).
67    o pkg/grdchk:
68      - add a call to TURNOFF_MODEL_IO for Tangent-Linear run (in this case, call
69        to this routine from cost_final has been dropped in g_cost_final)
70      - improve printed information (more explicit msg, no longer using "print *,"
71         fix fcpertminus printed value).
72    o model/src:
73      - move call to COST_INIT_VARIA out of packages_init_variables.F directly
74        into initialise_varia.F (just after calling PACKAGES_INIT_VARIABLES):
75        this prevents getting cost-funct reset in adinitialise_varia recomputations.
76    o pkg/dic:
77      - move initialisation of "freefe" array from from dic_biotic_forcing.F to
78        fe_chem.F: this prevents TAF from dropping this initialisation in TLM code.
79    o pkg/grdchk:
80      - grdchk_main.F : added CALL GLOBAL_SUM_INT( ierr , myThid )
81      - grdchk_getadxx.F etc. : omit I/O if ierr.EQ.0
82    o pkg/autodiff/ctrl/grdchk :
83      - attempt to sort out what works and what does not,
84        with regard to I/O, and to warn/stop accordingly.
85    o pkg/grdchk:
86      - attempt to fix grdchk in the case of useSingleCpuIO.
87      - "if ( myProcId .EQ. grdchkwhichproc .AND. ierr .EQ. 0 )"
88       statements were moved from grdchk_main.F and into
89       grdchk_getadxx.F grdchk_getxx.F grdchk_setxx.F.
90      - a global sum is applied to record numbers icvrec/layer
91       out of grdchk_loc so that they be passed to I/O routines.
92    o pkg/smooth:
93      - fix recomputation that appeared with nlfs : use smooth_recip_hFacC,
94        smooth_hFacW, smooth_hFacS (copied at init_fixed) in 3d case.
95    o verification/testreport:
96      - add option '-tlm' for Tangent-Linear test (-adm,-oad,-tlm are all exclusive);
97      - can also use compressed (gzip) reference output file;
98      - change format (in pkg/grdchk) of TLM output (+ add forward gradient)
99        to be easier to collect by testreport.
100      - update existing TLM output (half out-of-date by more than 3 yrs).
101      - report NETCDF & LAPACK settings (from genmake2) in output dir.
102      - report run-time in each individual summary (previously only for AD test);
103        for TLM test, add also TAF version.
104      - add daily TLM test on (old) aces cluster + weekly test on baudelaire.
105    
106    checkpoint63r (2012/08/15)
107    o tools/genmake2:
108      - fix Makefile for target ftlall (+ update files to clean after make ftlall)
109    o pkg/ecco/ecco_cost_final.F :
110      - fix fc print statements (to stdout and costfunction0000) so
111        that the printed value is always after the global sum.
112    o pkg/seaice/seaice_dynsolver.F :
113      - fix ice strength assymptote at SEAICE_area_max<1
114        (no change for the standard case of SEAICE_area_max=1)
115    o some cleaning:
116      - pkg source files: ensure that all *.F files from each pkg included the
117        corresponding ${PKG}_OPTIONS.h file (except stand-alone src file which
118        only includes CPP_EEOPTIONS.h); fix S/R CTRL_SMOOTH ; update AD experiment
119        code_ad/*.F src files; add new option-file in pkg/admtlm + corresponding
120        includes;
121      - model/src: add PACKAGES_CONFIG.h wherever ALLOW_AUTODIFF[_TAMC] is used.
122      - ALLOW_DIFFKR_CONTROL: add a stop in S/R CTRL_CHECK in case ALLOW_3D_DIFFKR
123        is undef; also define /DYNVARS_DIFFKR/ common block in DYNVARS.h when
124        ALLOW_DIFFKR_CONTROL is defined, to allow to compile and reach this stop.
125      - update option-file CPP_OPTIONS.h of all AD experiments:
126        * no longer include PACKAGES_CONFIG.h ;
127        * includes ECCO_CPPOPTIONS.h if PACKAGES_CONFIG.h has been included ;
128        * def/undef ALLOW_3D_DIFFKR independently of ALLOW_DIFFKR_CONTROL (before
129          including ECCO_CPPOPTIONS.h).
130    o pkg/cost, pkg/ctrl, pkg/ecco option-file:
131      - clean-up and split content of old pkg/ecco/ECCO_CPPOPTIONS.h file into
132        separated pkg option-file (done according to old doc from ECCO_CPPOPTIONS.h,
133        not necessary accurate).
134      - add a template for option-file ECCO_CPPOPTIONS.h, mostly empty, in
135        pkg/autodiff, i.e., the 1rst pkg to compile for adjoint built, with lines to
136        deliberately break compilation (a remainder that it needs to be customized)
137      - in pkg/ecco, includes ECCO_OPTIONS.h instead of COST_OPTIONS.h
138      - rename COST_CPPOPTIONS.h to COST_OPTIONS.h
139      - rename CTRL_CPPOPTIONS.h to CTRL_OPTIONS.h
140    o tools/genamke2:
141      - check for lapack.
142    o pkg/cost and pkg/ecco : attempt to sort out some of the limiting intricacies.
143      - pkg/cost.cost_final.F : allow for use of pkg/ecco and pkg/cost cost functions
144        jointly. The exclusive ifdefs were removed, to add costs terms (when defined)
145        from both packages.
146      - the fc global sum in pkg/ecco/ecco_cost_final.F was removed accordingly.
147      - for objf_atl we use either the pkg/ecco or the pkg/cost term depending on CPPs.
148      - pkg/ecco and model/src : add CPP brackets around pkg/cost and pkg/ctrl includes
149        of "CTRL_SIZE.h" "ctrl.h" "ctrl_dummy.h" "optim.h" / "cost.h" accordingly.
150    o pkg/cost : add comments to explain special and/or untested setups.
151    o pkg/exf:
152      - use EXF_OPTIONS.h to set pkg/exf options except if done in ECCO_CPPOPTIONS.h
153        (previously, ALLOW_AUTODIFF_TAMC was controling this switch).
154    o verification/*/code_ad:
155      mimimal cleaning of AD experiments ECCO_CPPOPTIONS.h option-file:
156      - reccord when this file is included (define ECCO_CPPOPTIONS_H)
157      - remove the most obvious obsolete features (e.g., #define ALLOW_COST not
158        allowed since Oct 2003 in any option-file except in PACKAGES_CONFIG.h)
159    o pkg/seaice :
160      - added possibility to change ice strength/PRESS0 relationship to
161        HEFF, according to the following run time parameters
162        SEAICEpresPow0 :: HEFF exponent for ice strength below SEAICEpresH0 (integer, >0)
163        SEAICEpresPow1 :: HEFF exponent for ice strength above SEAICEpresH0 (integer, >0)
164        SEAICEpresH0   :: HEFF threshold for ice strength            (m)
165    o pkg/ggl90 :
166      - added run time flag mxlSurfFlag to include the code that ensure
167        mixing between first and second level (previously included as a comment)
168    o verification/1D_ocean_ice_column/input_ad/data.autodiff :
169      - add test of newly added dumpAdByRec=T option where
170        we write all records to one file per variable.
171    o verification/global_ocean.cs32x15/code_ad/CPP_OPTIONS.h :
172      - switch to #define ALLOW_BALANCE_RELAX and ALLOW_BALANCE_FLUXES
173        to check that this code is ok with taf and compiles in adjoint.
174    o pkg/autodiff :
175      - added run time param dumpAdByRec : ad dump format switch.
176        If true then write all records to one file per variable.
177        Else write one file per record (remains the default).
178      - revise seaice_ad_dump.F and exf_adjoint_snapshots_ad.F accordingly.
179    o pkg/seaice:
180     - Added SEAICEuseTILT run time switch : if set to
181       false then omit the tilt term in seaice dynamics.
182     - Fix free drift calculation.
183    o pkg/shelfice:
184      When initializing SHELFICEDragQuadratic, set default to be
185      consistent with shiCdrag in case SHELFICEuseGammaFrict is used,
186      but retain option to set it independently
187      (inconsistenty spotted by Veronique Dansereau)
188    o eesupp/inc:
189      - in EEPARAMS.h, add real-type constant for some frequently used simple number
190         (0,1,2,1/2), with name explicitly referring to RS/RL type.
191    o model/src:
192      - move balancing of relaxation terms to new S/R balance_relax.F.
193    o pkg/autodiff:
194      re-write active I/O high-level (control) S/R:
195      - rename  S/R ACTIVE_READ/WRITE_RL to ACTIVE_READ/WRITE_3D_RL
196      - add 1 more argument (useCurrentDir) to replace the "_LOC" 2nd set of S/R.
197      - use standard pkg/mdsio I/O routines (MDS_READ/WRITE_SEC_XZ/YZ  and
198        MDS_READ/WRITE_FIELD); change loops to multi-threads.
199      - update and merge active_file_control_slice.flow into active_file_control.flow
200      - update the calls in lower level S/R (active_file.F, active_file_g.F and
201        active_file_ad.F) keeping the argument list and function unchanged.
202      - also update lower-level "_LOC" version (call same S/R with "useCurrentDir
203        =.TRUE.") and remove high-level (control) _loc version (not called anymore).
204      - new low-level active I/O routines, one for each type (RL/RS), for active var
205        of various (XY,XZ,YZ) shape and level number (arguments: arrShape, myNr);
206        fix ctrl_init_wet.F & ecco_cost_weights.F by calling the new S/R with the
207        right type.
208    o autodiff and RS=real*4:
209      - call the right type (_RS instead of _RL) of S/R in few output S/R (pkg/exf
210        ad-monitor and snapshots); disable arrType='RS' in mdsio_gl*.F ;
211      - change argument type of 3-D mask argument to _RS to match type in the call
212        (in seaice_cost*.F, ctrl_*_gen.F and *ctrl_bound.F); to be continued.
213    o pkg/thsice:
214      - re-anable balanceEmPmR when useSEAICE=T with useThSIce=T.
215      - option to correct ocean fresh-water flux for imbalance of Atmos+Land
216        fresh-water flux: uniform correction or proportional to local precip.
217    o pkg/ctrl:
218      - new header file CTRL_SIZE.h for parameters maxCtrlArr2D, maxCtrlArr3D
219      - redefine CPP option ALLOW_BOTTOMDRAG_CONTROL to
220                            ALLOW_BOTTOMDRAG_CONTROL_NONGENERIC
221      - verification/hs94.1x64x5/ tests ALLOW_GENARR{2D,3D}_CONTROL
222    
223    checkpoint63q (2012/07/30)
224    o pkg/autodiff:
225      note about monitor and snap-shot of ad-variables:
226      a) need to apply ADEXCH before monitor or output of ad-vars to include
227       overlap contributions (was done for adjDump but missing for monitor).
228      b) since ADEXCH implies adding overlap values to interior array, machine
229       truncation error is expected when adding an ADEXCH call in the middle of
230       the time-stepping (although mathematically identical).
231      modifs:
232      - fix some incorrect type (RL/RS, UV/scalar) in ADEXCH calls and ad-vars
233        declaration (adEddyPsiX,adEddyPsiY in adcommon.h).
234      - add new run-time params (dumpAdVarExch & mon_AdVarExch) to select how  to
235        apply ADEXCH before monitor or snap-shot of ad-variables:
236           =0 : no ADEXCH ; =1 : do ADEXCH ; =2 : apply ADEXCH on a local copy.
237      - implement new method (copy+adexch) for snap-shot and monitor of main model
238        ad-vars (initially not used by default -> output unchanged).
239      - change default (set to 2) to use new method and update few output_adm.txt
240        with accurate ad-monitor (global_ocean.90x40x15, tutorial_global_oce_biogeo
241        and both tutorial_tracer_adjsens tests).
242      - switch 2 global_ocean.cs32x15 AD-tests to AB-2 (seaice_dynmix & thsice)
243        and turn off momDissip_In_AB in the 2 other (needed for stable AB-3).
244    o pkg/ctrl:
245      enable the use of a variable number (maxCtrlArr2D, maxCtrlArr3D) of
246      generic control variables via
247      #define ALLOW_GENARR2D_CONTROL and/or #define ALLOW_GENARR3D_CONTROL
248      Only required customization should be S/R ctrl_map_ini_genarr.F
249      (routine in repository contains example)
250    o pkg/exf:
251      - fix and refine checking of surface-relaxation setting when using EXF
252    o verification (adjoint exp):
253      - reduce length of simulation by half for experiment global_ocean.cs32x15
254        (std, seaice & seaice_dynmix) and exp tutorial_dic_adjoffline; update output.
255    o pkg/mom_common (mom_u/v_bottomdrag), pkg/shelfice (shelfice_u/v_drag)
256      - replace if statements KE.ne.0 with KE.gt.0 to avoid sqrt of negative numbers
257        of KE that can occur with aggressive optimization
258      + put quadratic bottom drag calculation in separated loops (only done if
259        using bottomDragQuadratic)
260    o model/src: CG2D_NSA
261      - clean-up:  stop if cg2dNormaliseRHS=T and AUTODIFF
262         and replace GLOBAL_SUM calls with GLOBAL_SUM_TILE.
263      - in test-exp that uses CG2D_NSA (bottom_ctrl & tutorial_tracer_adjsens),
264         change cg2d residual target to be expressed in Wunits (=> do not normalise
265         RHS ; this fix global_max Pb with TAF); update output.
266    o verification/tutorial_tracer_adjsens:
267       improve parameter consistency (and get rid of warnings):
268       - use deltaTFreeSurf=deltaTtracer (better with NonLin FreeSurf);
269       - switch Temp Adv Scheme from 81 to 80 (no limiter since theta < 0 is physical)
270       - use staggerTimeStep (for stability) in som81; use default rotation period.
271    o pkg/exch2:
272      - with empty facet: fix compact-format (W2_mapIO=1) definition (was previously
273        reset to 0 = 1 long line in X)
274    o pkg/mdsio:
275      - fix reading of dimensions from meta file for large-size domain
276    o model/src:
277      - fix saltIsActiveTr setting for IdealGas eosType (eosType is 6 character long);
278      - to refine CS-grid check, add logical flag "hasWetCSCorners": true if using
279        Cubed-Sphere Exch with CS-corners inside the domain;
280        make new S/R INI_GLOBAL_DOMAIN from code in ini_linear_phisurf.F to calculate
281        globalArea and to set hasWetCSCorners.
282      - add warning if usingCurvilinearGrid and momAdvection in flux-form (missing
283        metric terms); stop if hasWetCSCorners=T and momAdvection in flux-form.
284      - re-activate the stop if useCDscheme and hasWetCSCorners=T (previously if
285        useCDscheme and useCubedSphereExchange).
286    o pkg/seaice/seaice_growth.F :
287      - compute the SEAICE_DISABLE_HEATCONSFIX term accordingly
288        for the (.NOT.useRealFreshWaterFlux).OR.(nonlinFreeSurf.EQ.0)
289        when the previous code was not correct.
290      - in all cases diagnoze the boundary condition mismatch to SIaaflux
291      - in the case of useRealFreshWaterFlux.AND.(nonlinFreeSurf.GT.0) add
292        that term to QNET (essentially to set the melt/freeze water to 0degC).
293        when SEAICEheatConsFix is true, so that the ocean+ice budget heat is closed.
294    o verification/global_ocean.cs32x15/input.seaice :
295      - add SEAICEheatConsFix in data.seaice, ensuring closed ocean+ice heat budget.
296      - add diagnostics (commented out) for budget test using my matlab codes (gcmfaces).
297      - update results (output.seaice.txt) accordingly.
298    o verification/lab_sea/input/data.seaice :
299      - remove SEAICEheatConsFix, which is now be tested
300        in global_ocean.cs32x15. The presently coded fix
301        is only consistent with real fresh water + nlfs.
302      - update results (output.txt) accordingly.
303    o pkg/salt_plume: added diagnotic for salt tendency (oceSPtnd).
304    o AD_CONFIG.h file:
305      - in genmake2: remove "#undef ALLOW_ECCO_OPTIMIZATION" from AD_CONFIG.h;
306      - remove #include "AD_CONFIG.h" from all included OPTIONS files and
307        add it explicitly in each fortran src file where it is needed.
308        motivation: header file AD_CONFIG.h is generated/modified after "make depend"
309        thus introducing potentially wrong dependency; therefore, better to include
310        it only where it's really needed, and after any other included OPTIONS file
311        (less tempting to bring conditional includes according to ALLOW_ADJOINT_RUN
312        or ALLOW_TANGENTLINEAR_RUN).
313    
314    checkpoint63p (2012/07/06)
315    o pkg/autodiff:
316      - rename S/R INI_AUTODIFF to AUTODIFF_INIT_VARIA ;
317      - create new header file "AUTODIFF_PARAMS.h" for pkg/autodiff parameters
318        which are now read from new parameter file "data.autodiff" (inAdExact
319        previously in "data", use{KPP/GMRedi/SEAICE}inAdMode previously in data.pkg)
320      - add file "data.autodiff" in all verification/*/input_ad/ directories.
321      - add run-time parameter to turn On/Off SEAICEuseFREEDRIFT in adjoint/forward
322        mode (used in global_ocean.cs32x15.seaice_dynmix test exp.)
323    o verification/tutorial_tracer_adjsens/
324      - add extra sub-verification which uses "SOM" advection scheme
325        (2nd Order-Moment Advection Scheme, Prather Limiter) with
326          #define GAD_ALLOW_TS_SOM_ADV in GAD_OPTIONS.h
327        and in data:
328          multiDimAdvection=.TRUE.,
329          tempAdvScheme=81,
330          saltAdvScheme=81,
331    o model/src:
332      - introduce ALLOW_BALANCE_RELAX which allow the removal
333       of the global mean of relaxation terms by setting
334       balanceThetaClimRelax and balanceSaltClimRelax
335      - disable balanceEmPmR and balanceQnet in the case when useSeaice.
336       This case is now treated appropriately in seaice_growth.F
337    o pkg/seaice:
338      - do balanceEmPmR and balanceQnet based on the net fluxes
339        (SItflux) that enter the ocean+ice system rather than QNET
340        and EMPMR. Works best in real fresh water.
341      - SIatmFW, SIatmQnet, and SItflux computations had to be moved
342        out of the diagnotics bloc, and stored in global arrays.
343    
344    checkpoint63o (2012/06/29)
345    o vertical mixing schemes:
346      - remove unused S/R CALC_BUOYANCY (left from branch-atmos merging)
347      - replace computation of density (in Function STATE1, opps_calc.F) by a call
348        to S/R FIND_RHO_SCALAR
349      - pass sigmaR to S/R PP81_CALC, MY82_CALC (but not yet used) and to GGL90_CALC
350        and use it for N^2 calculation in ggl90_calc.F (save 2 density computations);
351        affects output (vermix.ggl90) at truncation level.
352    o testreport:
353      - change adjustment of SIZE.h for mpi+mth testing: preserve enough tiles
354        (nSx,nSy) for the number of threads (from eedata.mth)
355    o model/src:
356      - remove 2nd set of calls at the top of initialise_varia.F (Adjoint part)
357        related to Non_Lin Free-Surf or Bottom-Control (but not longer necessary).
358    o verification/tutorial_tracer_adjsens/
359      - compile with ALLOW_CG2D_NSA
360      - run with nonlinFreeSurf=3
361      - update reference output_adm.txt
362    o tools/genmake2:
363      - add "-DHAVE_NETCDF" to the DEFINES list when NetCDF is available ;
364        refine usePROFILES switching off (only when NetCDF is not available).
365    o verification (atmospheric set-up):
366      - change eosType='IDEALGAS' to eosType='IDEALG' to match variable declaration
367    o pkg/profiles : refine profiles and files handling.
368    o model/src and pkg/ecco : introduce run-time switch usePROFILES.
369    o model/src/the_main_loop.F, forward_step.F and pkg/exf/EXF_OPTIONS.h :
370      - changes to use model/src/the_main_loop.F rather than the ecco version
371        in ecco type adjoint runs.
372    o model/src:
373      - move computation of recip of grid distance & area from INI_MASKS_ETC to INI_GRID
374      - move setting of h0Fac[C,W,S] from INI_LINEAR_PHISURF to INI_MASKS_ETC
375      - update_masks_etc.F: rename SMOOTH*_R4,R8 function to the corresponding type (RS,RL)
376    o model/src:
377      - fix S/R UPDATE_CG2D for ALLOW_DEPTH_CONTROL case (was empty before);
378        update output of test experiment bottom_ctrl_5x5.
379    o pkg/generic_advdiff:
380      - implement vertical bi-harmonic diffusion (for now, only for T & S and
381        only explicitly).
382    o verification/bottom_ctrl_5x5/
383      update reference output (results changed quite some time ago,
384      not sure when; but new reference results look ok in terms of grdchk)
385    o verification/1D_ocean_ice_column/
386      For verification purposes, the exact adjoint rather than an approx.
387      should be used (e.g., to comare against F.D. or TLM).
388      removed autodiff_inadmode*_ad.F routines in code_ad/
389      Update results/ accordingly.
390    o pkg/cal:
391      - change cal_getdate.F so that output date is function of input time only
392        (less ambiguous, not mixed up with input iteration number).
393      - fix calendarDumps for non-zero phase-lag (S/R CAL_TIME2DUMP).
394    o pkg/diagnostics:
395      - implement calendarDumps also for stats-diags
396      - implement calendarDumps also for snap-shot output (negative freq)
397      - for now, ignores calendarDumps if non-zero phase-lag.
398    
399    checkpoint63n (2012/06/04)
400    o model/src:
401      - recompute rSurfW & S to ensure consistent column thickness (needed for rStar)
402        between Sum_k(hFac*drF) and rSurf-rLow, for now only when using pkg/shelfice;
403      - use h0FacC, W & S to compute hFac_surfC, W & S in calc_surf_dr.F (more
404        similar to calc_r_star.F); update results of experiment internal_wave and
405        tutorial_global_oce_in_p (affected @ truncation level).
406    o pkg/shelfice:
407      - add parameterisation of advective-diffusive flux into the ice shelf
408        according to Holland and Jenkins (1999), eq.22-33, as suggested by Jan De Ryd
409      - simply eps3/3a computation
410    o eesupp:
411     - add new CPP option (DISCONNECTED_TILES) to disconnect tiles (no exchange
412       between tiles, just fill-in edges assuming locally periodic subdomain) and
413       add corresponding exchange subroutines (EXCH0);
414     - new CG-solver version (_EX0) for disconnected-tiles special case.
415    o model/src (CG-solvers):
416     - modify Single-Reduction version (CG2D_SR) in case cg2dMaxIters is reached
417       (similar final residual output and max-Iter number as with standard version);
418     - allows to store and use lowest-residual solution (standard & _SR versions);
419     - cleaning up (remove old, commented out code, LETS_MAKE_JAM ...).
420     - by default, also compile CG2D_SR version (define ALLOW_SRCG in CPP_OPTIONS.h)
421    o eesup/src:
422     - global_vec_sum.F cleaning: add a BARRIER ; update comments ; remove ndef
423       ALWAYS_USE_MPI (no longer needed after fixing usingMPI settings - March 2012)
424    o pkg/salt_plume added to lab_sea/input_ad.noseaicedyn
425    
426    checkpoint63m (2012/04/27)
427    o pkg/shelfice:
428     - account for partical cells in surface level below ice-shelf for hydrostatic
429       pressure calculion (set uniformFreeSurfLev to F); update isomip experiments.
430    o ad test experiments:
431     - update and rename to "ad_optfile.local" local AD-optfile specific to a
432       particular adjoint verification experiment (in verification/*/code_ad/)
433    o pkg/seaice & pkg/exf:
434     - Part two of ECCO-CLIVAR code merges.
435       Completes merge of seaice area relax. code.
436       Requires unified CPP option EXF_ALLOW_SEAICE_RELAX
437       to be set in EXF_OPTIONS.h since this pkg controls its I/O
438       (and avoids second CPP option in SEAICE_OPTIONS.h)
439     - change default value of costIceStart & costIceEnd to a valid date.
440     - add snowPrecip to HSNOW in seaice_growth
441    o pkg/ptracers:
442     - move ptracers summary and setup check into separated S/R ; add a check for
443       valid PTRACERS_Iter0 value (error+stop or just warning).
444    o pkg/cal (+ pkg/ecco):
445     - avoid calling a S/R with 2 times the same arg (FWD: unless both are only used
446       as input; and for AD, unless both are not differentiable (e.g., k index)).
447    o model/src:
448     - define internal flag "uniformFreeSurfLev" (=T when free-surface level-index
449       is everywhere k=1) to speed-up some calculations (by pass kSurf reference);
450       temporary set to usingZCoords value (to be changed to F when using shelfice).
451     - hydrostatic pressure: implement partial cell near the surface also for
452       Z-coordinates (for the case where uniformFreeSurfLev=F); replace test on
453       usingZCoords with test on uniformFreeSurfLev where needed (in NonHyd code).
454    o pkg/ctrl/ctrl_init.F:
455     - add a formal parameter to s/r ctrl_init_rec to print
456       xx_$(ctrl_valiable)_file for easier debugging
457     - move call of cal_* routines into the if-block where they are really
458       needed so that xx_$(ctrl_variable)_period can be 0 or -12 without having
459       to specify a startdate
460    o pkg/seaice:
461     - update comments in SEAICE_OPTIONS.h (+ similar update of lab_sea/code and
462       global_ocean.cs32x15/code versions).
463     - turn on seaice Multi-category (in data.seaice, SEAICE_multDim=7) for
464       verification experiment global_ocean.cs32x15.seaice and update results.
465    o pkg/exf:
466     - new S/R EXF_GETFIELD_START to return starting-time of a forcing field
467       (according to useExfYearlyFields).
468    o pkg/cal:
469     - move calendar setting & summary (previously in cal_readparams.F) into new
470       S/R CAL_INIT_FIXED to be called later in the initialisation process, once
471       length of the simulation is set (after SET_PARMS call); This is an attempt
472       to fix Pb when, e.g.: pkg/longstep, modifies the length of the run.
473     - For safety: keep a record of pkg/cal parameter settings status
474               to allow to STOP if one pkg/cal S/R is called too early.
475     - add a stop in all basic pkg/cal subroutines if called before setting is done.
476     - modify cal_getdate.F: stop when nothing was returned;
477       if called with myIter=-1, simply retrun modelBaseDate (1,2 = startDate_1,_2);
478       this allows to remove "cal.h" from seaice_read_parms.F & init_mnc_vars.F.
479    
480    checkpoint63l (2012/04/04)
481    o pkg/bbl:
482      - fix call to FIND_RHO_2D in bbl_calc_rho.F (case multi-tiles per proc);
483        update global_with_exf output.yearly.txt file.
484    o pkg/cal:
485      - start to clean-up cal_set.F ; fix for the case where baseTime is non-zero.
486      - remove 2 unsused and very short (1 line only) functions ;
487      - remove unsused subroutines from AD-Diff list.
488    o model/src:
489      - start to implement clean wait to stop in initialization S/R (config_check.F,
490         packages_check.F, ini_parms.F and pkg/obcs/obcs_check.F + pkg/mypackage)
491    o folowing PRINT_MESSAGE changes:
492      - remove reminder multiple print to the same file (STDOUT) when multi-threads.
493    o pkg/bbl:
494      - modification so it can work with z*
495      - replace deltaT with dTtracerLev(k) for asynchronous time stepping
496      - global_with_exf/input.yearly verification; changes output.yearly.txt
497    o eesupp/src:
498      - PRINT_MESSAGE: use OpenMP critical instruction (similar to PRINT_ERROR);
499        writing to unit 0 (if unit=errorMessageUnit) extended to the case myThid=1
500      - CHECK_THREADS: specific code if using OpenMP threading: improve checking of
501        # of threads across processors (e.g., different env OMP_NUM_THREADS setting)
502      - improve special preliminary call to EESET_PARMS (if eedata is read 2 times).
503      - when using MPI, always set usingMPI=T ; set default accordingly and stop
504        if not consistent.
505      - ALL_PROC_DIE: add a BARRIER after MPI_FINALIZE call ; skip this when thread
506        argument is zero (in case called within single-thread section).
507    o pkg/fizhi:
508        clean-up turbulence cold-start switch: decided in fizhi_init_vars.F, stored
509        in common bloc (fizhi_coms.h) and then passed as argument up to S/R TURBIO.
510    o pkg/exch2:
511      - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
512        activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
513      - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
514        but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
515        with bad ones coming from a not-yet-updated halo.
516        This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
517    o pkg/frazil:
518        move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
519        http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
520    o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
521    o verification/lab_sea
522      * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
523      * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
524      * nTimeSteps 3 -> 4
525      * changed reference output accordingly
526    o pkg/ctrl:
527      * fix ctrl_get_gen for xx_sst, xx_sss
528    o pkg/fizhi:
529      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
530        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
531      - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
532        fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
533        clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
534    o pkg/gmredi:
535      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
536    o pkg/fizhi:
537      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
538        (old)aces open64 tuv test.
539    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
540    o pkg/mom_vecinv:
541      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
542        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
543        with non-lin free-surf).
544    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
545      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
546      some compilers (gfortran 4.6.0 on MacOS)
547    o momentum:
548      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
549        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
550        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
551    
552    checkpoint63k (2012/03/17)
553    o model/src:
554       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
555         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
556       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
557         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
558    o model/src: solve_*diagonal.F
559       - replace division with multiplication by inverse (similar to original version)
560         update output of AD exp. global_ocean.90x40x15.
561       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
562         to enable the use of the vectorized & differentiable solve_tridiagonal.F
563       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
564         vertical advection (to get solve_tridiagonal tested in AD mode).
565    o pkg/seaice: ECCO-CLIVAR merge:
566      1. seaice AREA relaxation
567         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
568         * runtime flag: SEAICE_tauAreaObsRelax
569      2. modified global mean cost imbalance code: CPP option
570          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
571    o another iteration on solve_*diagonal.F
572       Make choices independent of AUTODIFF
573       Default will be the adjoinable vectorized version.
574       Alternative choices are:
575       * non-adjoinable original version with low memory footprint:
576         #define SOLVE_DIAGONAL_LOWMEMORY
577       * still adjoinable but does not vectorize (k as inner-most loop):
578         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
579    o testreport
580     - add option to use a home made wrapper around "make"
581     - remove MITGCM_IEEE env. variable (no longer active)
582    o pkg/shelfice
583     - improve computation of friction velocity for velocity dependent
584       exchange coefficients: include velocities into SHELFICEBoundaryLayer
585       block to average velocities vertically
586     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
587    o Modify diagonal solvers, now three versions (upon request):
588      #ifndef SOLVE_DIAGONAL_AUTODIFF
589        1. default version (dating back a while ago)
590      #else /* def SOLVE_DIAGONAL_AUTODIFF */
591      # ifdef SOLVE_DIAGONAL_KINNER
592        2. adjoinable version with k-innermost loop (G. Forget)
593      # else
594        3. adjoinable vectorized version of 2.
595      # endif
596      #endif /* SOLVE_DIAGONAL_AUTODIFF */
597      All flags are currently set within routines, but could/should be moved to CPP-options.
598      Array bounds for 1. are as before, for 2.,3. cover the entire domain
599      (could be changed for 1. too).
600    o verification/lab_sea (fwd):
601      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
602        use 7 categories (except hb87), new solve4temp params (except salt_plume),
603        constant salinity (=4) or variable salinity (salt_plume) done through
604        SItracer.
605    o pkg/seaice:
606      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
607      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
608         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
609        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
610        SEAICE_freeze got retired) but already better than previously with
611        SEAICE_freeze=123456.7 deg.C;
612      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
613        (safer multi-threaded setting); always set SEAICEuseEVP;
614      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
615        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
616        stop if multiple specifications for the same coeff; make sure default
617        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
618    o pkg/obcs:
619      - allow to switch to upwind 1rst order advection scheme for the advective
620        flux computation at the open-boundary; disabled for adjoint built.
621    o pkg/ptracers:
622      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
623      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
624      - add parameter to decide when to start a tracer; use internal flag to
625        know which tracer to step-forward; switch this internal flag at the top
626        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
627        for adjoint built.
628    o pkg/seaice:
629      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
630      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
631      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
632    o pkg/ecco:
633      - fix writing of output file DiagnosCost_ClimSalt/Theta
634        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
635    o pkg/seaice:
636      - add missing initialisation of COR_ICE array in dynsolver.F
637      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
638        compiled either way, and is tested in all exps (multidim was only tested
639        in lab_sea ad before).
640      - cosmetic change to prepare for future addition of ITD. no change to results.
641        no defaults change.
642      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
643      - by lack of adequate verification experiments, I further used custom versions
644        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
645        should be correct.
646      - avoid recomputations in ad.
647    o array initialisation in adjoint mode:
648      1) pkg/mom_common/mom_calc_ke.F:
649        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
650        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
651        part this initialisation is gone, resulting in Floating Point Exception
652        (caught by open64 compiler with debug option).
653      2) model/src/convective_weights.F
654        set output convectCount over the full array range (instead of doing
655        an update): this fix a similar issue when called within recomputation (adjoint)
656        which could by-pass the initialisation (normally done in the caller S/R).
657    o pkg/seaice:
658      - final version of turbulent flux params, as agreed at MIT ice meet:
659           SEAICE_mcPheePiston (default is ~ 0.000875)
660           SEAICE_mcPheeTaper (default is 0.)
661           SEAICE_frazilFrac (defualt is 1.)
662           SEAICE_mcPheeStepFunc (default is false)
663      - changes results at trunction error level
664      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
665    o added pkg/frazil:
666      - see frazil_description.tex for details
667      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
668    o pkg/shelfice/shelfice_thermodynamics.F
669      - fix exponents for velocity dependent exchange coefficients: change
670        from 2/3(=0) to 0.66666666666666667
671      - move computation of velocity dependent exchange coefficients into
672        separate loop, so that it applies to both thermodynamics
673      - move some divisions by constants out of loops
674    
675    checkpoint63j (2012/02/16)
676    o pkg/seaice:
677      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
678      - SItracer:  added run time params, and allow coupling to ocn salinity.
679    o pkg/seaice: remove (almost) all divisions by constants within loops
680      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
681      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
682      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
683      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
684    o pkg/seaice :
685      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
686        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
687      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
688      - add permanent SItflux diag that corresponds to TFLUX but includes
689        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
690      - allow activation/testing of a fix for suspected missing term in
691        ocn-ice heat budget (to be confirmed). To test this, you want to
692        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
693        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
694      - no change in results, fwd or ad.
695    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
696      - switch to variable freezing point.
697           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
698      - bug fix : the sublimation term that was missing is now activated.
699           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
700      - bug fix : flooding sign term for SIsal0.NE.0.
701           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
702    o pkg/seaice:
703      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
704        is now the default, and the old default constant freezing point is recovered
705        with SEAICE_tempFrz0    = -1.96,
706             SEAICE_dTempFrz_dS = 0.,
707      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
708      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
709      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
710        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
711      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
712        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
713      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
714        seaice_growth r149 for legacy branch (no results change).
715      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
716        from I. Fenty).
717      - results did not change except for global_ocean.cs32x15, mostly due to the
718        switch to variable freezing point (see above item for detail).
719    o pkg/thsice:
720      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
721        seawater freezing in thsice_calc_thickn (not used).
722    o pkg/seaice: turbulent flux term specification via run time params.
723      - replace CPP switches with run time switches to facilitate testing
724      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
725                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
726      - added runtime parameter : SEAICEturbFluxFormula
727      - move Mcphee constants to SEAICE_PARAMS.h
728      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
729                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
730                 remove seaice_summary call (moved to seaice_init_fixed)
731      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
732        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
733      - seaice_summary.F : add missing report of read turbulent flux term set up
734                           and SITRACER.
735      - seaice_check.F : check range; inform and stop if retired CPPs are used
736                         (incl. SEAICE_AGE).
737      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
738             CPP switch, same computation as before for the different options.
739      - change results at the truncation level.
740    o pkg/seaice:
741      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
742        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
743        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
744      - update verification/*/input*/data.seaice:
745        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
746        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
747        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
748        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
749    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
750      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
751        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
752        difference in results only due to machine truncation.
753      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
754        MaykutPolySatVap; keep MIN_LWDOWN.
755      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
756      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
757        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
758    o pkg/salt_plume:
759      - isolate saltPlumeFlux array exch into a specific S/R called from
760        do_oceanic_phys.F
761      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
762    o verification:
763      - move untested set-up to MITgcm_contrib/verification_other.
764    o pkg/seaice:
765      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
766    o pkg/seaice:
767      - seaice_solve4temp.F (keeping results unchanged):
768        * add 2 future run-time params to select which saturation vapor pressure
769          formula is used and how post-iteration fluxes are set.
770          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
771        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
772          the linearized expression to stay consistent with tsurf finding.
773      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
774        can be < 0.
775    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
776      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
777        conductive heat flux F_c , and add it explicitly when updating tsurf as
778        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
779        so that now F_ia has a consistent meaning through the entire routine.
780        This causes differences at truncation level: update output of fwd exp.
781        global_ocean.cs32x15.seaice.
782    o pkg/seaice:
783      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
784        of arrays, sign/direction of fluxes; no effect on results.
785      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
786        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
787        note: this should have been done before changing celsius2K default.
788      - to keep results unchanged, add back old value of celsius2K in verification
789        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
790      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
791        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
792        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
793        freezing temp is consistent with value in seaice_growth.F ; this causes
794        differences at machine truncation level: update lab_sea AD output (3/4).
795    o pkg/seaice:
796      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
797        and climsst/sss even when using seaice (to prevent calculation that might
798        use SST on land); does not affect any verification exp.
799      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
800        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
801    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
802      over land (non-legacy code)
803    o vectorize salt_plume package:
804      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
805      - this code computes plumebk everywhere (also over land), thus requires
806        code to avoid divisions by zero and catch the case of kLev=Nr.
807      - efficiency of salt_plume_frac is still sub-optimal
808    o tools (genmake2):
809      - fix makefile NAME specification (option: -makefile NAME) by adding
810        "-f $MAKEFILE" in few places where it was missing including makedepend
811        command (contribution from Paul).
812    
813    checkpoint63i (2012/01/24)
814    o model/src:
815      - add factorized versions of some EOS code to find_rho.F,
816        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
817    o model/src:
818      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
819      - change default celsius2K from 273.16 to 273.15
820      - to keep results unchanged, add back old value of celsius2K in verification
821        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
822         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
823    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
824      to make TAF generate vectorizable code
825    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
826       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
827       have flags that do this more efficiently.
828    o pkg/diagnostics/diagstats_calc.F
829      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
830    o pkg/obcs (with exch2):
831      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
832        and remove code (in obcs_readparms.F) which was based on EXCH of indices
833        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
834    o pkg/exf and seaice exp:
835      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
836        so that switching off area & heff advection flags does not affect results.
837      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
838      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
839        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
840        results of verification experiments: 1D_ocean_ice_column(fwd),
841        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
842        and offline_exf_seaice (all 4).
843    o pkg/seaice:
844      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
845        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
846      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
847        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
848        not multi-dim advection;
849      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
850        SHORTWAVE_HEATING #undef.
851    o optim: make Makefile more robust (?)
852    o pkg/obcs:
853      * fix treatment of obcs_read_pickup for TAF
854    o pkg/shelfice:
855      * add missing initialisation of num_shifwflx
856      * new adjoint verification exp. for isomip
857      * change Prandtl and Schmidt numbers from generic formulations
858        (in terms of model diffus. and visc.) to separate runtime
859        parameters, with Holland and Jenkins (1999) default values.
860    o pkg/exf (interpolation):
861      - extended input field (2 rows) near the N & S poles:
862        * fill in with the symetric value (when even Nb of data in longitude)
863        * add average value at the poles only for scalar quantities ; for vector
864          component interpolation, skip the averaging and keep duplicated values,
865          unless the 2 components have same location (uvInterp=T) in which case
866          interpolate the 2 components together using S/R EXF_INTERP_UV.
867      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
868        together: this allows to account properly for local orientation when
869        averaging at N & S pole.
870      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
871        exf-interpolation near N & S poles. Undef by default.
872      - add debug check/print on 1rst iter if debugLevel >=2.
873    o pkg/exf:
874      - change masking flags definition (no longer "parameter"), put them in
875        common block and set them in S/R EXF_INIT_FIXED.
876      - change recognized masking flag from s,u,v to c,w,s since the mask
877        to use (maskC,W,S) depends on position on model grid and has little to
878        do with scalar/vector difference; fix masking if using P-coordinates.
879      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
880        and update results of exp. global_with_exf (x2).
881      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
882    o pkg/obcs
883      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
884    o pkg/exf (interpolation):
885      - assume periodicity in X only if input field cover full longitude range.
886      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
887        and should vectorise).
888      - fix input lat of the 2 added row (in case we provide N.pole data).
889    
890    checkpoint63h (2011/12/30)
891    o pkg/seaice:
892      - change declaration of UVM from _RL to _RS in order to get B-grid
893        uIce,vIce monitor when _RS = real*4
894    o pkg/offline:
895      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
896      - compute vertical velocity if not read from file (switch on exactConserv
897        & staggerTimeStep);
898      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
899    o verification:
900      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
901        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
902        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
903      - update output of exp. global_ocean.cs32x15.viscA4 after changing
904        grid-file angles (used here for coriolis-3d);
905      - remove (or gzip) few files not needed to run fizhi-cs experiments.
906    o pkg/exf (vector interpolation):
907      - rotate vector component toward local grid-axis orientation using grid-angles
908        (stored in GRID.h) instead of locally computed rotation angle; keep old code
909        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
910    o pkg/seaice:
911      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
912        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
913    o pkg/PKG_OPTIONS.h files:
914      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
915        outside of the #ifdef ALLOW_THISPKG / #endif block.
916      - update verification/*/code/PKG_OPTIONS.h files.
917    o add a verification experiment (offline_exf_seaice/input.seaice) that test
918      the B-grid LSOR solver
919    o pkg/seaice: sort out emissivity and long wave radiation step 2:
920      - add emissivity for snow and ice as new run-time parameters
921        (unfortunately) that default to the corresponding exf values; this
922        changes results in most verification experiments so that for backward
923        compatibility these parameter have to be set explicitly to inconsistent
924        values (ugly);
925      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
926        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
927        until we agree how to handle this bug properly
928    o pkg/exf (interpolation):
929      - add a set of run-time param ({inputfield}_interpMethod), one for
930        each interpolated input field, to select the interpolation method
931        with a value of zero switching off the interpolation;
932      - print interpolation parameters to standard output;
933      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
934        (to use instead runoff_interpMethod=0 in data.exf).
935      - simplify default setting of interpolation parameters (for all fields,
936        set position to match model grid cell-center position, leading to trivial
937        interpolation in case of regular Lat-Lon grid) and fix for the case of
938        non-uniform delY.
939    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
940       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
941       this factor is absolutely required, because the lw exitance (= out-going
942       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
943       where the reflectivity rho = 1-emissivity for conservation reasons. Once
944       this is established, we can remove the CPP-Flag (if we want to).
945    o pkg/seaice:
946      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
947        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
948      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
949        what the name implies (and not emissivity*BoltzmannConstant), this means
950        the old default value of 5.5e-8 now means
951        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
952        S/R exf_readparms
953      - FV-discretization of the B-grid LSOR solver, turn on with
954        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
955        of the calling routine dynsolver, so that B and C-grid code look a
956        little more alike.
957      - fix index bugs in ostres.F (B-grid code)
958    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
959    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
960      default for SEAICE_emissivity, if useEXF; requires setting a wrong
961      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
962      backward compatiblity
963    o model/src: use sigmaR in calc_ivdc
964    
965    checkpoint63g (2011/12/16)
966    o pkg/seaice/seaice_growth.F:
967      fix heat conservation of the coupled ocean-seaice system.
968      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
969      solid vs liquid water treatment is resolved via QNET.
970    o pkg/seaice/seaice_growth.F:
971      add missing term for sublimation in saltFlux, which was breaking conservation.
972    o pkg/seaice/seaice_model.F:
973      Remove this patholigical case treatment in evolution branch,
974      where it is un-necessary and breaks conservation.
975      Update global_ocean.cs32x15/results accordingly for
976      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
977    o model/src:
978      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
979      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
980    o pkg/obcs:
981      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
982      tendency for temperature and salinity that is then applied to update
983      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
984      horizontal advection and diffusion contributions on the boundary (in
985      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
986      removing the mask in S/R timestep_tracer. The advantage of this approach is
987      that the updated tracer values include contributions from the surface
988      forcing and vertical diffusion.
989      This modification changes exp4.stevens because of vertical diffusion.
990    o model/src:
991      change non-curvilinear grid setting to also work with exch2 + blank tiles:
992      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
993        face dimensions.
994      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
995        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
996        and INI_SPHERICAL_POLAR_GRID.
997      change test-experiment global_ocean.90x40x15:
998      - split the domain in many more tiles (9x4 tiles of 10x10 each);
999      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
1000      - update results of both test (std & dwnslp).
1001    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
1002       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
1003    o model/src:
1004      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
1005        and fix initialisation when using sigma-coords.
1006    o model/src:
1007     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
1008       to their current value at the beginning of forward_step.F": add a new run-time
1009       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
1010     - set doResetHFactors=T in the following test exp:
1011        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
1012        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
1013        and tutorial_global_oce_in_p (nonLinFS in p)
1014    o pkg/ecco
1015      - added IES cost term
1016    o verification/advect_xz
1017      - scale down the depth by 1/100 (from 200 km to just 2.km)
1018      - add secondary test using divergent flow, r-star and implicit vertical advection.
1019      - add note (check_conserve_TS.txt) and matlab script to check global
1020        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
1021    o pkg/rbcs:
1022      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
1023    o pkg/obcs (Stevens BCs):
1024      - fix various problems in the phase speed computations of the Stevens
1025        boundary conditions:
1026        - sign error for western and southern boundaries,
1027        - time tendencies were underestimated by factor of dTracerLev and some just
1028          zero (for multidim advection schemes) -> now estimate time tendencies
1029          from difference between previous (n) time level and the one before (n-1);
1030          this requires storing a field per tracer per boundary, also in the pickup
1031          files.
1032        - replace deltaTmom in cflMer/Zon computation with dTracerLev
1033        - set default phase velocity to cflMer/Zon
1034      - update verification experiment exp4.stevens
1035    o pkg/generic_advdiff (implicit_r):
1036      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
1037        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
1038      - fix implicit vertical diffusion or advection with NonLin FreeSurf
1039        (was using current recip_hFacC instead of future recip_hFacC): set future
1040        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
1041        solver S/R ;
1042      - fill diagnostics of vertical advective fluxes (computed from tendency)
1043        when using implicit vert. advection;
1044      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
1045         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
1046         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
1047         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
1048    o pkg/diagnostics:
1049      - add diags for T & S tendency which goes through Adams-Bashforth.
1050    
1051    checkpoint63f (2011/11/30)
1052    o pkg/obcs/obcs_calc_stevens.F:
1053      - join some loops to reduce number of if-statements
1054      - fix a bug in code for northern and southern boundaries.
1055    o pkg/seaice/seaice_init_varia.F
1056      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
1057        caused zero ice-velocities for the B-grid code
1058    o pkg/seaice/seaice_init_fixed.F
1059      - fix a bug in the initialisation of the second metric terms
1060        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
1061      - this affects all seaice configurations with useCurviLinearGrid = .true.
1062        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
1063        = .true. (default)
1064      - the only verification experiment affected is global_ocean.cs32x15:
1065        icedyn, seaice, and seaice_dynmix (AD)
1066    o pkg/thsice/thsice_diagnostics_state.F
1067      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
1068        not contain garbage that can lead to surprises in diagstats_calc.F
1069    o model/src:
1070      - move bi,bj loops inside INTEGR_CONTINUITY ;
1071      - call INTEGR_CONTINUITY directly from forward_step.F
1072        (previously called from momentum_correction_step.F)
1073      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
1074        forward_step.F and pkg/ecco/the_main_loop.F
1075    o model/src/do_oceanic_phys.F:
1076      - reset addMass to zero only if useICEFRONT ;
1077      - separated k-loop for rhoInSitu calculation ;
1078      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
1079        and at constant T,S (= WdRHOdP);
1080      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
1081        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
1082        transport of locally-referenced potential density);
1083        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
1084    o gluemnc:
1085      - replace ncrcat with ncks when adding variables to *.glob.nc
1086      - change the way variables without record dimensions are handled so that
1087        files that have variables with and without record variables can be glued:
1088        add a record dimension with a new unique name to be able to differentiate
1089        between variable with and without a-prior record dimensions. Remove
1090        this record dimension before adding the variable to the *.glob.nc file.
1091        This procedure automatically works also for grid.*.nc files that do not
1092        have any record dimension.
1093    o verification/cpl_aim+ocn:
1094      - generate new reference output on baudelaire (gfortran, mpich2) (previously
1095        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
1096    o pkg/obcs/obcs_calc_stevens.F:
1097      - add code for northern and southern boundaries.
1098      - reorder some loops to save some operations and so that drFBar can be scalar
1099    o model/src:
1100      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
1101        truncation) and add diagnostics for Adams-Bashforth tendency increment.
1102      - update test-exp. AD output:
1103        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
1104      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
1105        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
1106        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
1107        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
1108        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
1109        tutorial_plume_on_slope.
1110    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
1111      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
1112      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
1113      does not even come with an F77 compiler anymore, this should not be
1114      a limitation
1115    
1116    checkpoint63e (2011/11/06)
1117    o pkg/seaice adjoint of LSR:
1118      - substantially rework STORE dirs.
1119      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
1120        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
1121        and only perform SOLV_MAX_FIXED adjoint iters.
1122        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
1123        always goes to same record, meaning that the last forward field will be
1124        the one used in the adjoint - an approximation.
1125      - now produces non-zero LSR-related gradients, and acceptable gradients for
1126        An's zonal (x-z) test case (to be checked in)
1127      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
1128        (but these are screwed up by the thermodynamics in the first place);
1129        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
1130        output_adm.txt also reflects changes to seaice_lsr
1131      - global_ocean.cs32x15:
1132        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
1133          (output_adm.seaice.txt was updated)
1134        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
1135          (output_adm.seaice_dynmix.txt)
1136    o test-exp. exp4+stevens:
1137      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
1138    o pkg/seaice (lsr solver):
1139      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
1140        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
1141      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
1142      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
1143        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
1144      - compute (with new S/R) and print initial (+ free-driff sol. if available)
1145        and final residual of linearised system.
1146    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
1147      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
1148    o pkg/obcs: Stevens BCs (still only for east and west)
1149      - fix Stevens BCs by using intermediate velocities of previous
1150        time step as "baroclinic" contribution rather velocity of one grid cell
1151        inside the boundaries; more consistent but makes the entire treatment
1152        more complicated, requires new pickup files and two new S/Rs:
1153        obcs_copy_uv_n and obcs_save_uv_n
1154        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
1155        (undefined by default)
1156      - silently move computation of some grid factors into separate loops to
1157        save some recomputations
1158      - add a hack for non-linear free surface
1159      - add a verification experiment to exp4 that tests this code
1160    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
1161    
1162    checkpoint63d (2011/10/25)
1163    o pkg/obcs + seaice-dynamics:
1164      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
1165        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
1166        values (consistent with an implicit method).
1167      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
1168        return to older implementation (same results as before); note that none of
1169        the "experimental" OBCS_SEAICE options are implemented in the new version.
1170      - switch test exp. seaice_obcs to use new version (update output).
1171    o pkg/seaice:
1172      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
1173      - add parenthesis in Water-Ice drag calculations (evp & lsr);
1174      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
1175        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
1176      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
1177        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
1178    o pkg/layers:
1179      - Include potential density as new coordinate (Thanks to David Munday)
1180    o pkg/dic:
1181      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
1182        carbonate computation/output to CALC_PCO2_APPROX
1183    o pkg/generic_advdiff
1184      - make TAF generate code that vectorizes:
1185        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
1186    o model/src:
1187      - improve vectorization also for adjoint code of
1188        solve_tridiagonal and solve_pentadiagonal. As this requires up to
1189        5 new 3D-fields, this code is only turned on for the combination of
1190        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
1191        for singular matrix check (only for TARGET_NEC_SX).
1192      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
1193        ALLOW_AUTODIFF. This flag now needs to be set outside of
1194        solve_tri/pentadiagonal.F
1195    o pkg/exf:
1196      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
1197        optional namelist EXF_NML_OBCS).
1198      - add many debug-print (to trace down where pkg/cal error msg comes from)
1199    o pkg/mom_vecinv/mom_vi_hdissip.F
1200      - rearrange loops so that vectorization is improved and in particular
1201        the adjoint routine vectorizes. The code is a little longer now, but I
1202        think easier to read.
1203        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
1204    o pkg/seaice:
1205      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
1206    o pkg/exch2:
1207      - alternative code (without tile x tile matrix) for cumulated (global) sum;
1208        used as default; keep using matrix version in adjustment.cs-32x32x1.
1209    o tools/build_options:
1210      - after merging some MPI and/or multi-threads specific optfiles so that
1211        the modified default optfile support both built (using genmake2 -mpi
1212        for the MPI built, using genmake2 -omp for OpenMP built),
1213        move now obsolete optfiles to tools/build_options/unsupported/
1214       (add copy of email sent to support list in doc/optfiles_changes.txt)
1215    
1216    checkpoint63c (2011/09/28)
1217    o pkg/ebm:
1218      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
1219        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
1220    o pkg/seaice (SItracer pickup)
1221    * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
1222      To be done:
1223      - thorough testing of missing fields in S/R seaice_read_pickup
1224      - thorough matching between generic tracers and specific fields used
1225        (e.g. volume-weighted age, area-weighted age, salinity, ...)
1226    o pkg/grdchk:
1227      - all procs calculate and print finite-difference gradient (for testreport)
1228      - change description output used by testreport;
1229      - AD testing: also compare and report Finite-difference gradient;
1230        => update all output_adm*.txt
1231    o test exp. global_ocean_ebm:
1232      - switch back useRealFreshWaterFlux (no problem anymore with run-off);
1233        and turn on exactConserve; update (fwd) output.
1234    o pkg/seaice (LSR):
1235      - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
1236      - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
1237        * identical results with non-CS topology (but save up to half of EXCH calls)
1238        * no much changes in cs-32 verification tests since no ice at face edges
1239         (differences due to convergence criteria, since nb of iterations changed)
1240        * expect some differences on lat-lon-cap grid.
1241        update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
1242    o pkg/exch2:
1243      - add new CPP option to disable Cumul-Sum matrix (to save storage when using
1244        many tiles); until alternative coding is added, just add a stop.
1245    o pkg/kpp:
1246      - move ptracer/salt correction to KPP diffusivity from calc_3d_diffusivity.F
1247        to S/R KPP_CALC_DIFF_PTR (+ add tracer-index to argument list).
1248    o optfiles:
1249      - merged few MPI specific (*+mpi*) and multi-threads specific (*+mth) optfiles
1250        into corresponding standard one, which now support different build:
1251        (when using "genmake2 -mpi" for MPI built, "genmake2 -omp" for OpenMP built)
1252      - add "darwin_amd64_gfortran" optfile (initially from Constantinos, tested by Gael)
1253    o pkg/obcs (seaice):
1254      - add missing EXCH for uIce,vIce after applying OBCS;
1255      - remove S/R EXF_SWAPFFIELDS_X/Y , disable S/R EXF_SET_OBCS_X/Y by adding
1256        argument = number of levels to S/R EXF_SWAPFFIELDS_XZ/YZ and S/R
1257        EXF_SET_OBCS_XZ/YZ ; update obcs_exf_load.F;
1258      - fix EXF_SET_OBCS_XZ/YZ for multi-threaded (assuming loaded arrays are shared)
1259      - verification exp. seaice_obcs: split domain in 2 tiles ; add SIZE.h_mpi
1260        and eedata.mth for MPI and mutlti-threaded testing.
1261    o pkg/flt:
1262      - make FLT EXCH working with multi-threads (and MPI + multi-threads);
1263      - use buffer for floats IO (trajectories & profiles); size set in FLT_SIZE.h;
1264      - fix pickup and trajectories + profiles output with multi-threads;
1265      - add parameter to select group of fields to write along trajectory and
1266        profile (default unchanged);
1267      - only call PORT_RAND* function when flt_noise <> 0;
1268      - add multi-threaded test for verification exp. flt_example.
1269    o eesupp/src:
1270      - fix S/R ALL_PROC_DIE for MPI+multi-threads.
1271      - USE_OMP_THREADING: check that number of threads (from eedata) matches
1272        actual number (from env.var. setting).
1273    o pkg/ebm:
1274      - fix multi-threading in ebm_area_t.F ; clean-up EBM.h header file.
1275      - add multi-threaded test for verification exp. global_ocean_ebm
1276    
1277    checkpoint63b (2011/08/29)
1278    o pkg/ebm:
1279      - fix sign of runoff;
1280      - update directly forcing fields (Qnet,EmPmR) to use standard
1281        external_forcing_surf.F (remove ebm_forcing_surf.F);
1282      - avoid loading forcing fields a 2nd time (1rst time from ini_forcing.F);
1283      - set either tauThetaClimRelax (in data) or tauThetaZonRelax (in data.ebm)
1284        and apply relaxation towards corresponding SST field (2-D map or ZonAver).
1285      - update global_ocean_ebm parameters file data and update output (fwd+ad).
1286    o verification/matrix_example:
1287      - split domain in 8 tiles (2x4); add SIZE.h_mpi and eedata.mth for
1288        MPI and mutlti-threaded testing.
1289    o pkg/matrix:
1290      - change name of S/R MATRIX_INIT to S/R MATRIX_INIT_VARIA ;
1291      - fix for multi-tiles (add bi,bj indices to exp/impMatrixCounter);
1292      - fix for multi-threaded (remove DATA statement);
1293      - use standard DIFFERENT_MULTIPLE function;
1294      - add MATRIX_OPTIONS.h
1295    o verification/matrix_example:
1296       To allow to split the domain in several tiles, change the domain size
1297        from 31x31 to 32x32 by adding 1 row (on Southern side) + 1 column (on
1298        Western side) of land points.
1299    o (*_)write_pickup:
1300      - fix few bugs in mypackage_read/write_pickup.F
1301      - in MDS_WR_METAFILES calls, replace "myTime" by a local copy into
1302        array of length 1 (was caught by compiler syntax-check).
1303    o pkg/diagnostics (velocity potential solver):
1304      - fix initialisation of main diagonal matrix (for overlap values)
1305    o tools/build_options:
1306      - towards single optfile for MPI and non-MPI built: merge few +mpi optfile
1307        into previously non MPI one (linux_am64 pgf77,open64,pathf90,ifort11)
1308      - linux_amd64_gfortran: merge +mpi_generic version into standard optfile:
1309        * move IEEE flags to DEVEL section; take IEEE flags from +mpi_generic ;
1310        * FAST case: for now, keep -O3 with ini_masks_etc.F in NOOPTFILES list;
1311        and use "-devel" testreport option for standard testing on baudelaire.
1312    o pkg/grdchk:
1313      - Assume that all gradient-check position are within the same tile
1314        corresponding to global indices (iGloTile,jGloTile) and that
1315        positions (i,j indices or nbeg) are local to this tile;
1316      - set tile local-indices and proc. number according to tile global-indices;
1317      - remove grdchkwhichproc from namelist (retired param);
1318      - send adjoint gradient to all procs so that all procs print it to STDOUT;
1319      - switch on MPI test for global_ocean.90x40x15 AD test experiment.
1320    o adding package bbl (Bottom Boundary Layer)
1321      description in MITgcm/pkg/bbl/bbl_description.tex
1322      example/test experiment in MITgcm_contrib/bbl
1323    o adjoint verifications
1324      - changed 5 experiments to multi-tiles
1325        * global_ocean.90x40x15
1326        * obcs_ctrl
1327        * offline_exf_seaice
1328        * tutorial_dic_adjoffline
1329        * tutorial_tracer_adjsens
1330        changed reference output for those that crossed tile boundaries
1331        (changed choices of gradient check positions)
1332      - with same tiling, switch on MPI test for the last 4 (add SIZE.h_mpi)
1333      - temporary bug fix in grdchk_loc.F for obcs
1334    o genmake2 & testreport
1335      - add target "obj" (just for OBJFILES files) to Makefile;
1336      - add option to specify FEXTRAFLAGS on command line.
1337    o pkg/mypackage:
1338      - remove bi,bj arguments from argument list of S/R MYPACKAGE_CALC_RHS
1339    
1340    checkpoint63a (2011/08/02)
1341  o pkg/diagnostics (velocity potential):  o pkg/diagnostics (velocity potential):
1342    - fix velocity-potential calculation when using OBCS: balance net inflow    - fix velocity-potential calculation when using OBCS: balance net inflow
1343      at each level (new S/R OBCS_DIAG_BALANCE).      at each level (new S/R OBCS_DIAG_BALANCE).
# Line 54  o pkg/gmredi: Line 1388  o pkg/gmredi:
1388     Add Sub-Meso Eddies parameterisation from Baylor (for now, disabled with TAF),     Add Sub-Meso Eddies parameterisation from Baylor (for now, disabled with TAF),
1389     and test it in verification exp. "front_relax.bvp" (update output.bvp.txt)     and test it in verification exp. "front_relax.bvp" (update output.bvp.txt)
1390    
1391  checkpoint63 (2011/07/11)  checkpoint63  (2011/07/11)
1392  o pkg/exch2:  o pkg/exch2:
1393   - rename+move: nTiles in W2_EXCH2_PARAMS.h --> exch2_nTiles in W2_EXCH2_TOPOLOGY.h   - rename+move: nTiles in W2_EXCH2_PARAMS.h --> exch2_nTiles in W2_EXCH2_TOPOLOGY.h
1394   - exch2 version of Cumul-Sum routine: S/R W2_SET_MAP_CUMSUM set up the   - exch2 version of Cumul-Sum routine: S/R W2_SET_MAP_CUMSUM set up the

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