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revision 1.1739 by jmc, Tue Sep 18 21:26:19 2012 UTC revision 1.1909 by jmc, Sat Aug 10 01:45:09 2013 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/seaice:
8      - restore (last time on 2011/12/24) ability to compile pkg/seaice with
9        undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
10      - only call DIAGNOSTICS_FILL when useDiagnostics=T.
11    o switch to TAF version-2:
12      - add flow directives to "freeze" naming convention for ad-routines that
13        are used in I/O routines of adjoint state and associated common blocks
14        that are used in adcommon.h (backward compatible with version-1)
15      - update all ad-optfiles (in tools/adjoint_options + few local to some
16        verification exp) to switch to latest TAF version (currently 2.5.5);
17        merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
18        out except for diva).
19      - the major change with TAF version-2 is that both the differentiated
20        routines and the forward routines (new) are returned as part of the TAF
21        output source code. Update genmake2 accordingly.
22      - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
23        with version-2 when compared to TLM or FWD gradient); other experiments
24        output show minor changes (machine truncation level); update the few AD &
25        TLM output with 12 matching digits only (some prior to version-2 switch).
26    
27    checkpoint64l (2013/08/05)
28    o model/src:
29      - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
30      - main_do_loop.F: no longer includes additional (AUTODIFF) header files
31        when using TAF but only if using OpenAD.
32    o pkg/mom_common+fluxform+vecinv:
33      - always set horiz. viscosity arrays to background value before calling
34        MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
35        only when using variable horiz. viscosity (useVariableVisc=T);
36      - simplify mom_vecinv.F (only 1 block for momViscosity).
37    o pkg/mom_common: variable horiz. viscosity in NH code
38      - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
39        from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
40      - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
41        useBiharmonicVisc & useVariableVisc.
42      - fix old bug (already in 1rst implementation of variable horizontal viscosity
43        in calc_gw.F, version 1.27, 2006/06/20):
44        horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
45        even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
46      - change background horiz viscosity in vertical momentum (gW) to always be
47        viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
48        any type of variable viscosity, e.g., viscAh/4Grid)
49      - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
50        viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
51        horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
52        default viscAh,viscA4 is zero).
53    o model/src:
54      - extend length of drC & recip_drC from Nr to Nr+1.
55    o Divided Adjoint (DIVA) with MPI:
56      - genmake2: do not create local ./mpi_headers dir when no file to copy into.
57      - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT
58        and ALLOW_USE_MPI) from model/src code and from ECCO_CPPOPTIONS.h.
59    
60    checkpoint64k (2013/07/23)
61    o tools/OAD_support:
62      - avoid the need for file "oadtempflile" in insertTemplateDir.bash
63        and remove it from genmake2.
64    o tools/build_options:
65      - remove MPI_HEADER_FILES_INC setting (no longer used) and comment out
66        MPI_HEADER_FILES list (let genmake2 find the missing headers)
67    o verification/halfpipe_streamice:
68      - change to driving stress formulation; update both Fwd & AD output.
69    o tools/genmake2 and Divided Adjoint with MPI:
70      - remove default setting of MPIINCLUDEDIR from $MPIHOME (always been broken);
71      - only create local ./mpi_headers dir if using MPI and MPIINCLUDEDIR is set;
72      - add new variable (LOCAL_MPI_HEADERS, replace MPI_HEADER_FILES_INC) in
73        Makefile, which is set by genmake2, and check which mpi-headers are needed.
74        Note: need to update adjoint_options/adjoint_diva_mpi accordingly.
75      - update target "CLEAN" (to also remove ./mpi_headers/ dir).
76    o testreport:
77      - changes for Divided Adjoint Run: when file "run_ADM_DIVA" is present,
78        perform additional runs (number of additional runs is "add_DIVA_runs" taken
79        from file run_ADM_DIVA ; should match "nchklev_3" in file "code_ad/tamc.h").
80    o verification/lab_sea (AD test):
81      - change to test Divided Adjoint Run in this set-up (both standard AD test
82        and 2 secondary AD test: noseaice + noseaicedyn); drop the evp AD test.
83    o pkg atm_ & ocn_compon_interf:
84      - remove cpl_earlyExpImpCall=F option (was mainly a hack added for the old
85        staggerTimeStep implementation) and disable (retired) corresponding
86        parameter.
87    o pkg/offline:
88      - comment out unused field-array: ICEM, ConvectCount, hflx[01], icem[01];
89      - add S/R OFFLINE_CHECK to print offline parameter summary
90        and stop if loading a file that is not used;
91      - enable to calculate GMRedi tensor, KPP mixing and convective index
92        when the corresponding file(s) is/are not specified (but pkg is used).
93      - comment out resetting of monitorFreq (to endTime) since it still useful
94        for monitoring CFL numbers and checking offline fields.
95    o OpenAD:
96      - do not define OAD_DEBUG (in tools/adjoint_options/adjoint_oad) to get
97        smaller standard output) and generate new (smaller) output (on baudelaire
98        using gfortran with -ieee) for exp. tutorial_tracer_adjsens
99    o model/src:
100      - call EXTERNAL_FORCING_SURF outside bi,bj loops (in do_oceanic_phys.F),
101        (where external_forcing_adjust was called) and change list of arguments;
102      - merge external_forcing_adjust.F into external_forcing_surf.F
103      - put surface relaxation of SST & SSS in new S/R (forcing_surf_relax.F)
104        which also contains balancing surface relaxation (ALLOW_BALANCE_RELAX,
105        previously in file "balance_relax.F", now removed); remove corresponding
106        arrays in FFIELDS.h.
107      - EXTERNAL_FORCING_SURF is now called when using pkg/offline; implement
108        a hack for getting back surfaceForcingS (loaded from file) when using
109        ALLOW_OLD_VIRTUALFLUX (pkg/dic, in DIC_OPTIONS.h) in offline set-up.
110      - update output of AD test experiment global_ocean.cs32x15.seaice_dynmix
111        (was getting only 11 digits for AD-grad, due to different truncation
112         error in AD code).
113    
114    checkpoint64j (2013/07/04)
115    o pkg/offline:
116      - to enable the use of other features with pkg offline (e.g., obcs),
117        also call S/R DO_OCEANIC_PHYS in offline run - more modifs to come.
118      - comment out "allowFreezing" (now active) in 2 offline testing exp.
119    o pkg/exf ALLOW_RUNOFTEMP
120      - fix sign and make compatible with temp_EvPrRn .NE. UNSET_RL
121      - ahdded RUNOFTEMP test to verification/global_ocean.cs32x15/input.seaice
122      - changes verification/global_ocean.cs32x15/results/output.seaice.txt
123    o pkg/atm_phys:
124      - allows to add some damping on uVel,vVel (strength only function of k).
125    o verification, ad-tests:
126      - reduce length of the simulation for AD test: global_ocean.cs32x15.seaice,
127        global_ocean_ebm and offline_exf_seaice.thsice.
128    o verification/halfpipe_streamice:
129      - found a bug in s/r pkg/streamice/streamice_advect_thickness which caused
130        flux input boundary conditions to be ignored; a fix for this bug changed
131        verification results for forward test.
132      - add adjoint test.
133    o pkg/ptracers:
134      - allow to restart without SOM pickup (resetting SOM to zero).
135    o pkg/gmredi:
136      - New parameterisation for the calculation of K and (GM_PsiX,GM_PsiY) added.
137      - It uses mixing length theory and suppression by steering level effects to
138        calculate a diffusivity used in the Redi tensor (see Bates et al., submitted
139        to JPO, for more details).
140      - It also uses the diffusivity to calculate an eddy induced streamfunction
141        based on a PV closure (rather than a buoyancy closure as in GM).
142      - New files added to pkg/gmredi:
143        gmredi_k3d.F calculates the diffusivity for the Redi tensor and the eddy
144          induced overturning streamfunction (called from gmredi_calc_tensor)
145        gmredi_calc_eigs.F calculates the eigenvalues and eigenvectors required
146          for use in gmredi_k3d
147        gmredi_calc_urms.F calculates the the rms eddy velocity used to calculate
148          the eddy diffusivity
149    
150    checkpoint64i (2013/06/18)
151    o pkg/cheapaml:
152      - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
153        that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
154        with pkg/cheapaml.
155    o utils/python: add subpackage for cubed sphere function, first example is
156        simple cs.pcol to plot 2D fields on a map
157    o pkg/streamice:
158      - This is a new package in MITgcm, which solves dynamic equations for ice
159         sheets and ice streams
160      - At the moment it is independent of atmosphere/ocean dynamics, or any
161        other physical packages in MITgcm, even ShelfIce (although it is anticipat-
162        ed that this will change)
163      - There is a new verification exercise that tests it, halfpipe_streamice,
164        evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
165        rectangular embayment
166      - halfpipe_streamice is forward-only for now, will have TAF test soon
167      - for questions, email dgoldber@mit.edu
168    o pkg/thsice:
169      - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
170        of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
171      - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
172         call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
173      - allow precip from pkg/cheapaml to make snow over seaice.
174    o pkg/cfc:
175      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
176      - remove atmos CFC 2-D arrays from common bloc (now local variables)
177      - change some hard-coded constant to run time parameter for reading and
178        and interpolating atmospheric CFC ; keep same default as previously.
179      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
180      - put arguments in standard order: myTime, myIter, myThid
181      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
182        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
183      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
184      - new routine to print summary of CFC params and check for consistency.
185    o pkg/seaice: add uice/vice to the parameter list of s/r seaice_advdiff,
186      similar to thsice_advdiff.
187      Note that for the B-grid case the routine parameters uc/vc are overwritten.
188    o pkg/cfc:
189      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
190        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
191      - fix interpolation of atmphspheric CFC between Sorthern and Northern
192        hemisphere value.
193    o pkg/seaice:
194      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
195    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
196                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
197      - requires an additional time level that is stored in the pickup
198      - you can start with AB2 from a pickup without this time level with
199        pickupStrictlyMatch = .false.
200    
201    checkpoint64h (2013/05/26)
202    o pkg/cheapaml:
203      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
204        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
205      - consistent treatment of uWind,vWind location: assume everywhere in
206        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
207        (Note: was already the case for Tair,Qair advection);
208        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
209      - compute diabatic forcing only in the interior (excluding overlap regions)
210      - fill in array "Qsw" (for short-wave heating);
211      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
212        before any update (consistent with MITgcm state var diagnostics);
213      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
214        non periodic ; + adjusted for uWind,vWind (C-grid).
215    o pkg/seaice:
216      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
217        add explicitly pkg/exf in experiments that currently use pkg/seaice.
218      - allows to compile pkg/seaice without pkg/exf.
219    o tools/OAD_support:
220      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
221        of array "ourStepOf" in function rvNextAction (revolve.F90).
222    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
223      - change pkg name (to be used with other atmospheric physics pkg)
224        but by-pass CVS when making the new pkg so that we keep the CVS history.
225    o pkg/offline:
226      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
227        (previously called from pkg/dic_surfforcing_init.F)
228    o model/src:
229      - re-order sequence of calls within packages_init_variables.F, using
230        standard order, except for:
231         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
232         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
233    o new pkg: atm_phys
234      - add entry point and source code (previously in contrib
235          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
236        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
237      - re-order sequence of calls within packages_readparms.F,
238         packages_init_fixed.F and packages_write_pickup.F
239        (but skip packages_init_variables.F because of TAF issues).
240      - update contrib/*/atm_gray/ experiment.
241    o pkg/seaice (ITD code):
242      - simplify and fix the writing of pickup-files for ITD case
243    o pkg/seaice (ITD code):
244      - introduce floe size dependent lateral melt for ITD case;
245      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
246      - update seaice_itd experiment main output.
247    o pkg/thsice:
248      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
249        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
250        changed accordingly pkg/atm2d.
251    
252    checkpoint64g (2013/05/01)
253    o pkg/exf ALLOW_RUNOFTEMP
254      - if defined,  river and glacier runoff temperature can be read-in from
255        runoftempfile; runoftempfile needs to have same format as runofffile
256    o pkg/thsice (& pkg/bulk_force):
257      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
258        for energy content of Precip + RunOff & Evap (like with pkg/exf).
259      - change computation domain to always be the interior (without overlap).
260      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
261    o verification/tutorial_global_oce_biogeo:
262      - add preliminary OpenAD setup (still has problems)
263    o pkg/seaice:
264      - turn some parameters for choosing the convergence criterion of
265        the inexact Newton method (JFNK) into runtime parameters for convenience
266      - clean up seaice_calc_viscosities.F: remove/retire two options for
267        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
268        the results of lab_sea/input because a division has been replaced by
269        a multiplication with the reciprocal (sumNorm)
270      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
271        convergence of solver (changes results, of course), and to test some
272        new features
273    o model/src:
274      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
275      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
276      - move forcing adjustment (balancing surface forcing) in specific S/R
277        where might also be applied exchanges (if needed) to forcing arrays.
278    o pkg/shelfice:
279      - allow to specify the Ice-Shelf mass per unit area (instead of
280        shelficeLoadAnomaly) and do the conversion from one to the other
281      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
282        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
283        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
284        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
285      - update isomip experiment forward output (get machine truncation error
286        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
287    o verification/offline_exf_seaice:
288      revise data.seaice in input.thermo and input_ad and update results accordingly
289        HO = 0.2, SEAICE_areaLossFormula = 2,
290        SEAICE_growMeltByConv = .TRUE.,
291        SEAICE_doOpenWaterMelt = .TRUE.,
292      Improve consistency with input.thsice and fix the spurious 500m ice corners
293    o verification/global_ocean.cs32x15:
294      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
295        in icedyn (thsice+seaice-dyn) test and update output.
296    o verification/offline_exf_seaice:
297      - adjust list of tested variables (with testreport) and update
298        standard test output with better slection of monitored fields.
299    o pkg/cd_code:
300      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
301        experiment lab_sea.hb87
302    o tools/genmake2:
303      - change default makedepend from the system default to tools/xmakedepend:
304        When no makedepend is specified, select tools/xmakedepend it the test pass,
305        otherwise select the system default (if exist and pass the test) or
306        try to build cyrus-makedepend ; stop if none of the 3 works.
307    o pkg/exf & pkg/thsice:
308      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
309        for energy content of Precip + RunOff & Evap. Assumes:
310       1) Rain has same temp as Air.
311       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
312       3) Run-Off comes at the temp of surface water (with same Cp)
313       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
314        put directly into Latent Heat flux & should use water-vapor heat capacity.
315       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
316        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
317    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
318        (compile when SEAICE_ALLOW_JFNK is defined)
319    o pkg/thsice:
320      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
321        implementation): move THSICE_AVE call after the advection (called directly
322        from thsice_do_advect.F).
323    o verification/global_ocean.90x40x15 and OpenAD:
324      New experiment for OpenAD is identical to the one in input_ad except that
325        multiDimAdvection=.FALSE.,
326      There is still an issue with this.
327    o pkg/thsice:
328      - account for ice velocity (ocean relative velocity) in turbulent heat flux
329        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
330        and offline_exf_seaice (main test).
331    
332    checkpoint64f (2013/03/31)
333    o verification/OpenAD:
334      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
335    o verification/isomip, pkg/shelfice and OpenAD:
336      - add OpenAD setup to this exp and make shelfice package work with OpenAD
337    o verification/tutorial_global_oce_biogeo:
338      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
339    o verification/offline_exf_seaice:
340      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
341    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
342      - add OpenAD setup to this exp and make ptracers package work with OpenAD
343    o pkg/seaice/seaice_evp.F:
344       mask the asymmetric contribution of the ice-ocean stress (when
345       the turningAngle is non-zero) over open water to avoid stripes
346       in the EVP-solutions after many EVP-substeps. This does not change
347       the verification experiment (because turningAngle=0 in that experiment),
348       but will affect other EVP solutions with turningAngle.ne.0
349    o verification, AD & TLM output:
350      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
351        additions and multiplications which affect results at machine truncation
352        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
353        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
354        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
355        digits of matching.
356    o pkg/seaice:
357       modify lsr-algorithm so that it vectorizes AND converges by using a
358       "zebra" method: split vector loop into two with step size 2; this
359       solves a general convergence problem for the JFNK solver on a vector
360       computer. It has the potential to even improve convergence for
361       non-vector machines, but it does change the results so it is turned
362       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
363       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
364    
365    checkpoint64e (2013/03/05)
366    o pkg/ecco and several verification experiments:
367       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
368       from ecco package, and revert to unified routine in model/src/
369       Adjust verification experiments accordingly, especially gloal_oce_llc90
370       Should conclude long-standing work by Gael to reconsile the_main_loop with
371       ECCO and will enable OpenAD's revolve loop in ECCO setup.
372    o pkg/generic_advdiff:
373      - implement compressible flow method for multi-dim advection (similar to
374        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
375        TAF generates many recomputations) to use it; no yet coded with implicit
376        vertical advection.
377      - change experiment advect_cs (new output) and advect_xy (same output)
378        to test compressible flow multi-dim advection.
379    o pkg/generic_advdiff:
380      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
381        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
382    o pkg/seaice:
383      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
384        bug affects two verification experiments (lab_sea and lab_sea.hb87),
385        recover old (wrong) results by setting noSlipFac = 2. in
386        seaice_calc_strainrates.F;
387      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
388      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
389        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
390      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
391    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
392      - new subroutines seaice_lsr_tridiagu/v
393      - introduce loop bounds i/jmin/max to be able to use a restricted
394        additive Schwarz method, but not used for now.
395      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
396      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
397    o OpenAD support
398       Reorganize S/R call for overall time-stepping loop to facilitate
399       OpenAD revolve loop replacement
400       (new S/R main_do_loop.F)
401    o model/src:
402      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
403      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
404        ADAMS_BASHFORTH2.
405    o pkg/cheapaml:
406      - add new parameter (default=F, same as before) to disable full domain
407        (including land) periodicity in X & Y dir.
408      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
409        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
410        into single S/R CHEAPAML_TIMESTEP.
411    
412    checkpoint64d (2013/02/17)
413    o pkg/monitor (angular momentum):
414      - do not add Eta contribution to the total AM if using rigid-lid;
415      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
416      - horizontal discretisation: compute Zonal wind contribution separately for
417        each component (instead of from cell centered averaged) and use the 4
418        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
419      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
420        FreeSurf) if using vectorInvariant momentum.
421    o model/src (horizontal grid):
422      - move initialisation of all horizontal grid arrays to null value
423        from specific horizontal grid S/R to main S/R INI_GRID;
424      - add 2 new arrays to project model C-grid velocity on to zonal direction
425        (similar to AngleCosC & -AngleSinC but at U and V point location) and
426        compute them in S/R CALC_GRID_ANGLES.
427    o pkg/seaice: replace a hard coded parameter by a runtime parameter
428        SEAICE_JFNK_tolIter
429    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
430        preconditioner for JFNK (run LSR into the overlaps as far as possible,
431        i.e OLx/y-2, but overwrite the solution in the overlaps)
432      - extend loop range in seaice_calc_viscosity
433      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
434      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
435      - slightly modify loops in tridiagonal solver lsr-preconditioner
436      - by default remove the extra exchange in seaice_preconditioner with a
437        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
438      - modify offline_exf_seaice so that old results without RAS are reproduced
439        for output.dyn_jfnk.txt
440      in seaice_fgmres.F (unrelated to RAS)
441      - add a cpp-flag option for a re-ordered mapping (potentially more
442        efficient), but because this changes the results, turn it off by
443        default
444      - replace the save statement by local common blocks
445    o utils/matlab:
446      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
447      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
448        instead of local script "load_cs.m".
449    o pkg/seaice:
450      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
451        to the scalarProductMetric and the unrolling. By chance this does not
452        change the verification experiment, because of the particular domain
453        decomposition
454    o pkg/diagnostics:
455      - change default missing_value from UNSET_RL to -999.
456    o pkg/layers: improve vectorization of layers_fluxcalc.F
457      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
458        time spent in this routine by more than a factor of 3 on an NEC-SX8
459      - step 2: replace search algorithm by a bisection algorithm found in
460        Press et al. Numerical Recipes in Fortran. This algorithm can be
461        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
462        For now, use this algorithm only for TARGET_NEC_SX defined.
463      - moved the search algorithm into a separate subroutine, that is kept
464        within the same file for automatic inlining.
465      - modified catching potential errors
466    o pkg/ecco:
467      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
468    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
469      - modifications for ALLOW_GENTIM2D_CONTROL
470      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
471      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
472      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
473      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
474    o model/src:
475      - account for moist thermodynamics in (dry) potential temperature equation;
476        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
477        and cpl_aim+ocn.
478      - also switch to standard compiler (gfortran, was using ifort previously)
479        for fizhi-cs experiments reference output.
480    o pkg/ctrl:
481      - 1st step toward generic time-varying control variable (2D) via CPP option
482        ALLOW_GENTIM2D_CONTROL
483      - note new namelist ctrl_nml_genarr in data.ctrl
484    o verification/global_ocean.cs32x15:
485      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
486        thsice calling sequence and update "output.icedyn.txt" output file.
487    o pkg/ptracers:
488      - from Ryan A.: code to allow to restart a tracer at regular time interval
489        specifying a reset frequency and a reset-phase (for each tracers).
490    o pkg/thsice:
491      - implement new sequence of calls for thsice+seaice:
492          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
493          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
494      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
495        in CPP_OPTIONS.h) to recover old sequence;
496      - update diagnostics for Intermediate State thsice diagnostics: now filled
497        just before advection (instead of just after advection in old sequence);
498      - update output of experiment offline_exf_seaice (standard test);
499      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
500        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
501    o pkg/aim_v23:
502      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
503      - use standard pkg/mdsio routines to read & write CO2 pickup file;
504      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
505      - Implement new sequence of calls for seaice advection (with thsice and
506        seaice diffusion): do ice advection after ice-Thermodynamic (previously
507        was done before); change aim_do_physics.F (split the bi,bj loops block);
508      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
509    o pkg/thsice:
510      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
511        where just seaice diffusion is used without seaice-dynamics.
512    
513    checkpoint64c (2013/01/18)
514    o pkg/seaice:
515      - add a parameter JFNKres_tFac that can replace JFNKres_t
516        (= JFNKres_tFac*JFNKresidual before JFNK solver)
517      - add a line search option to the JFNK solver
518      - move update of u/vIce and computation of initial residual into a separate
519        routine (same file); makes the code a little easier to read (?)
520      - the line search requires computation of the residual and for some reason
521        I cannot do the update of u/vIce at the beginning of the Newton loop
522        without changing the results, so we move computation of the new residual
523        also to the end of the Newton loop, even without the line search
524    o pkg/mdsio:
525      - write missing value (corresponding to undefined array value) to meta files;
526        skip this if missing value is one (UNSET_RL would be a better value for the
527        case of undefined missing value but it's current the default missing-value);
528        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
529    o pkg/exf & thsice:
530      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
531        diagnostics) even when SHORTWAVE_HEATING is #undef;
532    o verification/cfc_example:
533      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
534        illustrate how to use it).
535    o verification/offline_exf_seaice:
536      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
537        files to only one time-record.
538      in input.thermo: narrow the 2 bands of low initial ice-concentration near
539        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
540        snapshot output; same mcPheePiston value as in thsice with
541        surf-current=0.2m/s.
542      in input.thsice: similar set-up as in input.thermo (channel with same seaice
543        initial conditions).
544    o verification/cfc_example:
545      - update file "data" with more standard choice (default rotationPeriod,
546        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
547        set deltaTFreeSurf to deltaTtracer) and update the output.
548    o pkg/layers:
549      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
550      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
551    o verification/offline_exf_seaice:
552      - set all {field}period to zero for constant-in-time forcing (not tested
553        anywhere else).
554    o verification/offline_exf_seaice:
555      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
556      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
557    o model/src:
558      - implement Finite-Volume method for (hydrostatic) presure gradient
559        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
560    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
561      - In order to be compatible with the default EVP code, this requires changing
562        the EVP code around a little; and because any small change immediately
563        breaks the lab_sea.hb87 verification experiment, the reference output is
564        updated two times (each time the remaining aggrement was only 2 digits):
565        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
566        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
567        The adjoint test lab_sea.evp also needed to be updated.
568      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
569        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
570        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
571        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
572        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
573        kept obscure, because I need to test it a little more.
574    o pkg/cheapaml:
575      - fix few incorrect type (_RL/_RS) in subroutine calls.
576    o pkg/seaice:
577      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
578        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
579    o model/src:
580      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
581        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
582        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
583    o pkg/cheapaml:
584      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
585        update output of experiment cheapAML_box.
586      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
587        and set them only in one place (cheapaml_readparms.F).
588      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
589      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
590        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
591    o model/src/the_main_loop.F:
592      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
593    o pkg/seaice:
594      - remove legacy branch code.
595      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
596    o verification/*/code*/SEAICE_OPTIONS.h:
597      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
598        SEAICE_CAP_HEFF).
599    o pkg/cheapaml:
600      - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
601        to load new forcing fields.
602      - add missing "_d 0" where it's needed; + some editing (improve indentation).
603      - remove switch to "-r8" compiler option (no longer needed) in verification
604        cheapAML_box, keep same output (small trucation error differences).
605    o verification/offline_exf_seaice:
606      - add thermodynamics only test.
607    o verification/cheapAML_box:
608      - split the domain in 8 (2x4) tiles; add MPI and multi-threaded test;
609        keep same output (same 14 digits for cg2d).
610      - switch on "-r8" compiler option (some numerical values are missing
611        the "_d 0") and update output (only 6 digits for cg2d were preserved).
612    
613    checkpoint64b (2012/12/24)
614    o pkg/cheapaml:
615      - remove un-used variables (Qnet,EmPmR) from pickup files.
616      - store tendency of advected variables into cheapaml pickup file
617        and fix the AB-2 restart.
618    o verification/offline_exf_seaice and lab_sea adjoint:
619      - switch to new code (#undef SEAICE_GROWTH_LEGACY).
620      - switch to 4 time steps in offline, consistent with lab_sea.
621      - match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice.
622      - update results after change of experiment seaice.
623    o pkg/seaice:
624      - remove option SEAICE_MULTICATEGORY; has been replaced with run-time
625        parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is
626        still defined since SEAICE_multDim needs to be set to MULTDIM value (from
627        SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default.
628    o model/src:
629      - add run-time parameter to select CG2D solver minimum-residual solution
630        (in case of a poor convergence).
631    o pkg/seaice/seaice_lsr.F
632      - move calculation of matrix coefficients into new
633        S/R SEAICE_CALC_LSR_COEFFS; for now this routine remains in the same
634        file; the main purpose of this change is to be able to reuse the code
635        in S/R SEAICE_PRECONDITIONER
636      - modify the computation of the residual so that the mass of sea-ice
637        is not used twice; this simplifies the calculations, but since
638        the residual is never used except when LSR_mixIniGuess.ge.4---and this is
639        not tested in testreport---this does not affect the testreport results.
640    o verification/seaice_obcs:
641      - disable SEAICE_GROWTH_LEGACY; reset input files to match those of
642        verification/lab_sea/input.salt_plume; changes results/output.txt*
643    o model/src:
644      - adapt quasi-hydrostatic formulation to work with p or p* coordinate.
645    o pkg/seaice:
646      - improve description of parameters in seaice_fgmres.F and start
647        cleaning up the code
648      - change name of SCALPROD to SEAICE_SCALPROD and modify meaning of
649        second argument
650      - add a metric based on grid cell area to SEAICE_SCALPROD; update
651        results of offline_exf_seaice.dyn_jfnk
652      - compute initial residual norm in seaice_jfnk based on SEAICE_SCALPROD
653    o pkg/aim_v23:
654      - fix an other bug in dissipation heating (grid-cell area was missing).
655    o model/src + pkg/seaice:
656      - add global (multi-tile) linear solver for pair of tri-diagonal system
657        along X and Y lines, respectively for U and V component.
658        Note: 1) MPI and cube-exchange not yet coded.
659            2) probably not accurate for poorly conditioned / large size problem.
660      - add option for SEAICE_LSR to use global (multi-tile) tri-diagonal solver;
661        default: not compiled and not used.
662    o pkg/seaice:
663      - first attempt at a multi-threaded fgmres solver for the JFNK solver:
664        introduce bi/bj loops and use global_sum_tile_rl instead of
665        mpi_allreduce in seaice_fgmres.F
666      - improve diagnostics output for fgmres solver (seaice_fgmres.F)
667      - replace a few unnecessary goto statements by if-blocks  (seaice_fgmres.F)
668      - add a verification experiment for JFNK in offline_exf_seaice
669    o verification:
670      - change (for now, only fwd test) offline_exf_seaice experiment:
671        use a re-entrant channel with idealized coastline (trapezoidal shape)
672        at southern boundary to explore seaice dynamics and thermodynamics
673        with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
674        secondary test (input.thsice) use thermodynamics only with SST relaxation.
675      - add seaice-dynamics only secondary test using LSR and pkg/thsice advection.
676    o pkg/exf:
677      - disable "sstExtrapol" when Nr=1
678    o verification:
679      - add new experiment "cheapAML_box" (simple 1 layer set-up from Bruno Deremble)
680        to test pkg/cheapaml.
681    o pkg/aim_v23 & pkg/shap_filt:
682      - fix dissipation heating (erroneous gravity multiplication factor).
683    o pkg/seaice:
684      - remove unused field pressPre from jfnk solver
685      - rename two subroutines in seaice_preconditioner.F
686    o eesupp/src:
687       - S/R MDSFINDUNIT avoids reserved unit numbers (scrUnit1, eeDataUnit ...)
688    o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again
689       - remove wrong parts of the rhs and the lhs (were in there
690         because I did not understand the concept of this preconditioner)
691       - add an exchange between u- and v-sweep. This increases communication
692         by a factor of two but improves the convergence of jfnk. Ideally,
693         one would like the u- and v-sweep to be independent. So far within
694         undocumented ifdefs
695       - reorganize the extra computations for printing the residuals
696    o tools/genmake2:
697      - comment out the "mpif.h" include in NetCDF test programm (for MPI built)
698        since it's not necessary (and was preventing to use MNC in some cases).
699    
700    checkpoint64a (2012/11/16)
701    o pkg/autodiff:
702      - improve pkg-internal logical parameter switch (inAd/inFwd mode) so that
703        autodiff_readparms.F no longer depends on calling order (within
704        packages_readparms.F) and no longer requires to include ${PKG}_PARMS.h):
705        rename param turnFreeDriftInAdMode to SEAICEuseFREEDRIFTswitchInAd
706        and change param SEAICEuseDYNAMICSinAdMode to SEAICEuseDYNAMICSswitchInAd.
707    o pkg/obcs:
708      - adding tidal velocity forcing capability to obcs
709        for usage example, see verification/seaice_obcs/input.tides
710    o pkg/seaice:
711      - turn the LSR-relaxation parameters WFAU/V into runtime parameters
712        SEAICE_LSRrelaxU/V
713      - introduce runtime parameter SEAICEetaZmethod (=0 by default)
714    o pkg/aim_v23:
715      - implement heating from friction (bottom friction and stratospheric drag).
716    o pkg/shap_filt:
717      - fix diagnostic "SHAP_dKE" (was 2 time smaller); implement heating from
718        dissipation but only for Shap_funct=2, active when addFrictionHeating=T.
719    o model/src:
720      - move AddMass common block from DYNVARS.h to FFIELDS.h; allow to read-in
721        time-constant addMass field from file (addMassFile);
722      - support for heating due to friction (and Kinetic Energy dissipation):
723        add option, run-time switch and 3-D field array + support code ; each pkg
724        or S/R can add heating contribution (if there is a sink of KE); the sum is
725        accounted for as a Temperature tendency term (EXTERNAL_FORCING_T).
726    o pkg/seaice:
727      - complete merge of ITD code into seaice_growth.F
728        from MITgcm_contrib/torge/itd/code/
729        no verification so far, but Torge Martin tested
730        "1-D test case and Beaufort set up;
731        deliver okay results after 1 model year."
732      - complete merge of SEAICE_SIZE.h into all relevant routines
733      - move computation of eta at Z-points into calc_viscosities
734        + introduce global field etaZ
735        + add different methods for computing etaZ, for now the old
736          method (simple averages of eta to Z-points) is hardwired
737        + replace etaMeanZ by etaZ in seaice_lsr, seaice_calc_residual,
738          seaice_preconditioner
739      - simplify computations for SEAICE_ZETA_SMOOTHREG
740      - seaice_preconditioner:
741        + replace one remaining press by pressLoc (mistake)
742        + adjust printing of residuals
743      - improve I/O of diagnostics of JFNK in seaice_jfnk.F:
744        + add (SEAICE.h) and rename some counters (initiliased in
745          seaice_init_fixed.F)
746        + add _BEGIN/END_MASTER (myThid)  around print statements
747        + print total number of iterations and failures over SEAICE_monFreq
748          interval to STDOUT
749      - move control over output-messages by fgmres to seaice_jfnk to save
750        some operations
751      - move resetting initial guess for fgmres outside of seaice_fgmres_driver
752        in order to make restarts with sol .ne. zero (fgmres with restarts)
753        (seaice_jfnk.F, seaice_fgmres.F)
754      - seaice_calc_l/rhs.F: replace maskW/S by maskInW/S; this fixes
755        a serious convergence problem when open boundaries are involved
756    o pkg/ggl90: fix computation of control volumes for the case of
757      ALLOW_GGL90_HORIZDIFF (probably not used very often): move control volumes
758      up half a grid cell from C-centered to W-centered (pointed out by C. Eden)
759    o pkg/seaice: simplify seaice_evp by avoiding use of extra fields u/vIceC
760    o pkg/autodiff
761      - Add inAdMode switch for SEAICEuseDYNAMICS:
762        SEAICEuseDYNAMICSinAdMode
763        (extend logic in ADAUTODIFF_INADMODE_SET)
764    o pkg/seaice
765      - Step 1 of merging ice-thickness distribution (ITD) code from
766        MITgcm_contrib/torge/itd/ (author: Torge Martin)
767        The code implements concept laid out in Thorndike et al. (1975);
768        code is enabled via CPP flag SEAICE_ITD
769        nITD (in SEAICE_SIZE.h) defines number of ice thickness categories;
770        code is not complete yet!!
771      - SEAICE_SIZE.h now included in almost all seaice routines
772    o verification (using seaice):
773      - switch back seaice-dynamics (+ lower SOLV_MAX_ITERS) in ADM exp.
774        global_ocean.cs32x15.seaice ; update results.
775      - compile B-grid dynamics in FW test exp 1D_ocean_ice_column ;
776      - compile C-grid dynamics with #define SEAICE_ALLOW_JFNK in FW test exp
777        offline_exf_seaice (previously compiling B-grid).
778    o pkg/exf:
779      - fix some STOP conditions in exf_check.F (from Aug 28, modifs did not allow
780        to specify neither just 1 comp of wind or wind-stress, nor no surface momentum
781        forcing): just replace CPP option ALLOW_ATM_WIND with run-time param useAtmWind.
782    o pkg/layers (adjust changes from Sept 19):
783      - do snap-shot output and fill diagnostics from inside iLa loop (layers_calc.F)
784        this allows to remove "layers_maxNum" dimension from all layers arrays.
785    o pkg/layers (adjust changes from Sept 19):
786      - remove ALLOW_LAYERS_OUTPUT ; fix snap-shot and time-ave output ;
787      - snap-shot extended to all type of layers (not just the 1rst type);
788      - remove layers variables when corresponding CPP option is undef.
789    o pkg/layers:
790      - rename pkg/layers variable and add new output (layer exist & un-weighted
791        velocity in layer)
792    o pkg/seaice:
793      - simplify (?) ocean-drag coefficent computations by using
794        the same routine in all three solvers (saves some code lines)
795      - remove global fields DRAGA and DRAGS from C-grid code and
796        declare them locally in lsr.F (the only place where they are
797        still used)
798      - update AD output of lab_sea.evp (very sensitive anyway).
799    o pkg/seaice: add Jacobian-free Newton Krylov solver for ice dynamics
800      (Lemieux et al. 2010, 2012). Turn on with the usual SEAICE_ALLOW_JFNK
801      and SEAICEuseJFNK=.true. A few things to note:
802      - involves a FGMRES, that is parallel but very inefficient,
803        because of many scalar products (global sums) in the Gram-Schmidt
804        orthogonalization method. Needs to be replaced. Original code
805        from J.-F. Lemieux
806      - preconditioner for FGMRES is a stripped down version of LSOR
807      - SOLV_MAX_ITERS is now used for LSOR as a solver and as a
808        preconditioner. For the preconditioner, the default is set to 10.
809      - Jacobian times vector is computed with finite differences
810      - marginally related to JFNK-solver: add a smooth regularization for
811        zeta with tanh that will improve convergence (Lemieux and Tremblay,
812        2009) for any implicit solver (not implemented for EVP because EVP
813        does not need this regularization in the first place). Define
814        SEAICE_ZETA_SMOOTHREG in SEAICE_OPTIONS.h to use.
815    o eesupp/src:
816      - check in genmake2 that intrinsic S/R flush is available.
817      - add S/R to flush IO unit (if intrinsic S/R flush is available)
818      - flush standard & error msg unit before MPI termination
819      - if debugMode, flush IO unit after printing msg
820    o pkg/ctrl:
821      - ctrl_unpack.F, ALLOW_GENARR3D_CONTROL code: fix missing argument in call
822        to ctrl_set_unpack_xyz.
823    
824    checkpoint64 (2012/10/09)
825    o pkg/shelfice
826      - in mom_fluxform.F, mom_vecinv.F:
827        CALL SHELFICE_V_DRAG(bi,bj,k,vFld,KE,KappaRU,vF,myThid)
828        Bug fix KappaRU -> KappaRV
829        does not change verification/isomip but may change other setups
830        (presumably constant KappaRU=KappaRV)
831      - fix diagnostics SHIU/Vdrag (thanks to Tom Millgate)
832    o pkg/obcs:
833      - fixed some indexing bugs in obcs_seaice_sponge.F
834      - added obcs relaxation subroutines for HSALT and HSNOW
835      - changes verification/seaice_obcs/results/obcs_seaice_sponge.F
836    o pkg/seaice:
837      - add "multicategory" parameterization for snow in analogy to ice,
838        default is off for now.
839    o pkg/obcs:
840      - added obcs_seaice_sponge.F for obcs relaxation of seaice variables;
841        see verification/seaice_obcs/input.seaiceSponge for example application.
842      - remove local commom bloc "OBCS_GLOBAL" in obcs_readparms.F and do all the OB
843        index setting by master-thread. This fix multi-threads Pb in previous modifs.
844    o pkg/layers :
845      - add diagnostics to pkg/layers
846      - move the meat of pkg/layers from layers_calc.F to layers_fluxcalc.F
847        (from R.Tulloch). Layers_calc.F now calls layers_fluxcalc.F accordingly.
848    o pkg/generic_advdiff/gad_implicit_r.F :
849      - fix ADVr diagnostics in case of both implicit vertical advection and diffusion.
850    o pkg/seaice/seaice_growth.F:
851      - fix SItflux diagnostics in virtual salt flux + balanceEmpmr case.
852  o pkg/obcs:  o pkg/obcs:
853    - change default setting of OBCS_UVICE_OLD from defined to undef;    - change default setting of OBCS_UVICE_OLD from defined to undef;
854    - use new parameter OB_indexNone for null index value (instead of hard-coded 0)    - use new parameter OB_indexNone for null index value (instead of hard-coded 0)

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