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revision 1.1821 by mlosch, Fri Feb 8 07:56:45 2013 UTC revision 1.2026 by jmc, Wed Jul 16 20:33:10 2014 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/fizhi:
8      - add parenthesis around fizhi tendencies in fizhi_tendency_apply.F: this
9        affects results at machine truncation level. Update output of experiments
10        fizhi-cs-32x32x40 (12 digits for cg2d) & fizhi-cs-aqualev20 (13 digits).
11    o pkg/seaice: more clean up
12      - rename TAF common block tapes to be more consistent and remove
13        unnecessary duplicates
14      - add store directives to remove more recomputations, but use smaller
15        tapes (and adjust keys) when SEAICE_LSR_ADJOINT_ITER is undefined.
16        The idea behind this flag is to reduce the memory footprint when the
17        adjoint of the LSR is not required. As of now, defining the flag
18        SEAICE_LSR_ADJOINT_ITER increase 4 common block tapes for 2D field by
19        a factor of SOLV_MAX_FIXED (=500 by default in SEAICE_SIZE.h).
20        For experiment offline_exf_seaice, this means on a linux box with gfortran
21        nearly a factor of 10 (but keep in mind there is mostly seaice code in
22        this experiment): > size mitgcmuv_ad
23        text    data        bss     dec        hex  
24        5100659 1216  220458952  225560827  d71c8fb
25        5339425 1200 1868783272 1874123897 6fb4dc79 (SEAICE_LSR_ADJOINT_ITER)
26        but only a moderate increase of 36% for global_ocean.cs32x15:
27        text    data        bss     dec        hex
28        6695027 1648 1014578664 1021275339 3cdf6ccb
29        6695203 1648 1382505320 1389202171 52cd8afb (SEAICE_LSR_ADJOINT_ITER)
30      - note: there are still recomputations in global_ocean.cs32x15 and
31        the gradient agreement changes (gets a little worse)
32      - in general, the AD gradients still are wrong
33    o OpenAD
34      - clean up code_oad/ directories somewhat by moving files
35        dontCompile, dontTransform, keepOriginal to OAD_support/
36    o model/src:
37      - using MOM fluxform and Non-Lin Free-Surf with momDissip_In_AB=F
38        (not currently tested): add dissipation terms before NLFS rescaling of
39        tendencies (previously done after).
40    o pkg/diagnostics:
41      - write stats-diags in ascii file with more digits (same as in monitor).
42    o pkg/down_slope:
43      - drop the bi,bj dimension of argument recip_hFac in S/R DWNSLP_APPLY; with
44        NLFS (not tested), use new recip_hFac value in order to conserve tracer.
45    o model/src:
46      - new file "apply_forcing.F" containing all the code previously in
47        external_forcing.F, but with new argument list: pass, as new argument,
48        the current level tendency array to update (instead of a direct update
49        of the common bloc array). Change the corresponding calls.
50      - add CPP option USE_OLD_EXTERNAL_FORCING (default is undef) to use
51        EXTERNAL_FORCING_U,V,T,S subroutines (for backward compatibility).
52    o pkg/seaice/seaice_lsr, a little bit of clean up
53      - rearrange some code blocks, so that now all calculations for
54        setting up the right-hand-sides done within one single block
55        (I find that easier to read and understand)
56      - rearrange freedrift-code to reduce the number of ifdefs
57      - adjust some indentations and comments
58    
59    checkpoint64z (2014/07/10)
60    o model/src and several pkgs:
61      - change argument list of all S/R called from external_forcing.F and
62        called from ptracers_forcing.F (renamed to ptracers_apply_forcing.F)
63        to pass, as argument, the current level tendency array to update
64        (instead of a direct update of the common bloc array).
65      - change also (in the same way) argument list of PTRACERS_APPLY_FORCING;
66      - rename taueddy_external_forcing.f to taueddy_tendency_apply.F
67    o pkg/seaice/seaice_lsr.F
68      - always initialize local arrays in seaice_lsr_tridiagu/v
69      - add more local tapes to seaice_lsr_tridiagu/v
70      - move storing u/vice(:,:,bi,bj) out of seaice_lsr_tridiagu/v, but
71        keep it in bi/bj loop; this seems to be essential
72      - gradients are still wrong but only by 4-7 orders of magnitude
73        instead of 15 orders of magnitude, lab_sea improves a little
74    o pkg/seaice
75      - (pkg/autodiff) remove storing/restoring of seaiceMaskU/V that
76        generates unnecessary code in seaice_lsr_ad
77      - add more store directives in seaice_lsr to avoid unnecessary code
78        in seaice_lsr_ad
79      - exclude some residual computations in seaice_lsr when
80        ALLOW_AUTODIFF_TAMC is defined in order to avoid unnecessary code
81        in seaice_lsr_ad
82      - add more storing, a new tape (model/src/the_main_loop.F) and
83        another key for SEAICE_LSR_VECTORIZE_ZEBRA (the local keys ilockey
84        and klockey should be checked by a specialist)
85      - modify ( define SEAICE_VECTORIZE_LSR and SEAICE_LSR_ADJOINT_ITER )
86        and update lab_sea after previous changes in pkg/seaice below
87    o pkg/autodiff:
88      - introduce useSmoothCorrel2DinAdMode, SEAICEapproxLevInAd, and
89        viscFacInAd : run time parameters allowing for adjoint switches
90        note : logic for useSmoothCorrel2DinAdMode is in ctrl_readparms.F
91    o pkg/ecco:
92      - introduce cost_gencost_boxmean.F that computes a box mean
93        temperature (for use in adjoint sensitivity studies).
94    o model/src/set_defaults.F : initialize viscFacAdj to 1.
95    o pkg/mom_common/mom_calc_visc.F:
96      - ifdef ALLOW_AUTODIFF then include viscFacAdj factor.
97    o pkg/seaice/seaice_summary.F:
98      - statement for SEAICEadjMODE now in autodiff_readparms.F
99    o pkg/seaice:
100      - remove some store directives and add new ones in an effort to get
101        finally rid off the recomputation warnings. This is successful
102        when SEAICE_VECTORIZE_LSR ***and*** SEAICE_LSR_ADJOINT_ITER are
103        defined (i.e. no extensive recomputation warnings left), but there
104        are still too many recomputations on the solver iteration level
105      - define SEAICE_VECTORISZE_LSR in offline_exf_seaice/code_ad/SEAICE_OPTIONS.h
106      - move definition of MPSEUDOTIMESTEPS into TAMC-block in
107        SEAICE_SIZE.h
108      - add a store directive in S/R seaice_calc_viscosities
109    o pkg/seaice (ITD code):
110      - fix definition of Hlimit for multi-threaded case
111      - use double precision arithmetic to compute Hlimit: this affects results;
112        update output of experiment seaice_itd.
113    o replace content of verification/seaice_itd
114      - instead of a 1D column use the configuration of offline_exf_seaice
115        to test the ice thickness distribution code with ridging
116      - this is a first shot at this experiment
117      - change of some defaults of ridging parameters SEAICEhStar (from
118        100 to 25) and SEAICEmuRidging (from 5 to 3) in seaice_readparms.F
119        and lot of new comments.
120    
121    checkpoint64y (2014/06/20)
122    o pkg/seaice/seaice_reg_ridge.F:
123      - modify the regularization of very small volumes of ice; only check
124        total volume HEFF, and do not apply correction to individual ice
125        classes because that leads to funny patterns in the heat and fw-fluxes
126        into the ocean. Adjust seaice_itd/results/output.txt
127      - replace nITD by SEAICE_multDim in loop-ranges
128    o pkg/exf:
129      - add code to process the case field period = -12. with UV interpolation.
130      - move debug print (formerly active when exf_verbose=T) from EXF_getFFieldRec
131        into S/R that calls it (i.e., exf_set_gen.F, exf_set_uv.F & obcs_exf_load.F)
132    o verification/global_with_exf:
133      - switch all fields period to -12. (was previously untested) in input/data.exf
134        (but keep secondary test ".yearly" unchanged); update the reference output.
135    o pkg/cal:
136      - new calendar type "noLeapYear" for 365 days calendar without any leap year.
137    o pkg/exf:
138      - new integer parameter "exf_debugLev" (default set to main model debugLevel)
139        to replace logical switch "exf_verbose"
140      - report in STDOUT when loading a new record (if exf_debugLev >= 3)
141    o pkg/sbo:
142      - update from Katherine Quinn: evaluate mass directly from density and SSH
143        (budget using Finite Volume method) instead of from bottom pressure.
144      - allow testreport to collect few selected SBO output ; tested in exp.
145        global_ocean.90x40x15 (after updating the results, to include SBO output).
146      - fix some multi-threading issues (in output part).
147    o model/src & most packages:
148      - always call {PKG}_READPARMS even if corresponding use{PKG}=F;
149      - in {PKG}_READPARMS, in case use{PKG}=F: add a call to new S/R
150        PACKAGES_UNUSED_MSG to print a weak warning when parameter file
151        "data.{pkg}" exist ; and leave the S/R (return) just after.
152      - more standard LAND pkg interface (land_init_fixed.F, land_check.F).
153        + call LAND_READPARMS from packages_readparms.F
154    o pkg/seaice:
155      - remove code that resets useThSice in S/R seaice_readparms and
156        replace it by a warning in S/R seaice_check
157      - remove parameter MULTDIM, replace with nITD and runtime
158        parameter SEAICE_multDim (still hard-wired to nITD if
159        SEAICE_ITD is defined)
160    
161    checkpoint64x (2014/05/24)
162    o verification/lab_sea:
163      - update adjoint and TLM output following changes to pkg/salt_plume
164      - un-do the update after putting back local recip_Cp in few places.
165    o pkg/salt_plume: modifications by An Nguyen:
166      - add capability to do brine rejection (salt-plume) as function of
167        volume+tracers (instead of only salinity tracer).
168      - conserve volume by exchanging volume from each kLev to above to
169        accommodate in-coming brine volume
170      - store surface and klev exchanged fraction + volume in 4 new 3-d arrays
171      - switch KPP surf buoyancy due to brine forcing to 3-d
172        (3 more 3-d arrays, 2 for SPforcing[T,S], 1 for boplume)
173      - add salt_plume_volfrac, salt_plume_apply, salt_plume_tendency_apply_t
174      - unrelatedly, also add ad-hoc capability to vary salt_plume scheme
175        in East/West Arctic.
176    o pkg/sbo:
177      - incorporate modifications from Katherine Quinn to enable the use of sbo
178        pkg in ECCO-v4 set-up ; remove SBO-TimeAve output ; add monitor-like
179        output for future testreport verification (unfinished).
180    o pkg/atm_phys:
181      - change diagnostics (AtPh_Trf & AtPh_Qrf) of DARGAN_BETTSMILLER S/R:
182        skip the reseting of t_ref & q_ref to initial t & q ; this preserve the
183        output of S/R CAPECALCNEW (Parcel temp & q) for diagnostics.
184    o pkg/seaice
185      seaice_calc_ice_strength.F: modify expression to avoid divisions
186        (affects truncation)
187      seaice_do_ridging.F: clean up the insectarium
188      - fix a bug that was compensated by areaScaling (-> remove areaScaling code)
189      - added SEAICEsnowFracRidge to redistributed snow (2nd bug)
190      - set closing/openingRate to zero where no extra iteration is need (3rd bug)
191      - add some debugging information and error messages (warnings)
192    o model/src: modifications relatd to atmosphere p*:
193      - Switch to more accurate p* coordinate slope term (calc_grad_phi_hyd.F)
194      - With p* or Sigma-P, use constant reference Pot.Temp (thetaConst) instead
195        of vertical profile tRef in geopotential background and anomaly.
196      - Acount for true p* correction in theta <-> T conversion in pkg/aim_v23
197        and pkg/atm_phys.
198      - Update FWD output of experiments: aim.5l_cs (x2), fizhi-cs-32x32x40,
199        fizhi-cs-aqualev20, fizhi-gridalt-hs, tutorial_held_suarez_cs, cpl_aim+ocn.
200    o pkg/seaice: fix a bug in seaice_prepare_ridging.F, forgot a sqrt
201    o pkg/ptracers: compute ptracer source/sink due to linear free surface.
202        not used right now, but can be used in BGC packages to fix conservation.
203    o pkg/dic, pkg/gchem: move tracer_meanarea to gchem, so it can be used by
204        other packages too.
205    o pkg/seaice/seaice_calc_ice_strength.F: replace SEAICE_rhoSnow by
206        SEAICE_rhoIce in the Rothrock (1975)-type strength calculations (bug fix)
207    o model/src:
208      - since we have several heat capacity (even in model/src), define "recip_Cp"
209        as local variable (no longer in common block) to avoid any confusion.
210      - add thetaConst in PARAMS.h (to be used with pStar or sigma-P coords).
211    o pkg/exf:
212      - from Jeff Scott: add option (#define EXF_CALC_ATMRHO) to calculate local
213        air density as function of air Temp, Humidity and atm pressure.
214    
215    checkpoint64w (2014/05/02)
216    o verification:
217      - update output_adm.txt files for experiment global_ocean.cs32x15 (seaice &
218        seaice_dynmix) and lab_sea (primary test & noseaicedyn): moving/changing
219        code from seaice_growth.F & seaice_advdiff.F to new ridging routines
220        seaice_reg_ridge.F seaice_do_ridging.F affects AD gradient
221        (down to 8-7 matching digits for global_ocean and 5-6 for lab_sea).
222    o model/src: for atmosphere in p* coords:
223      - store factor rStarFacC**atm_kappa (= pStarFacK) in common block
224      - implement more accurate p* coordinate slope term (in calc_grad_phi_hyd.F),
225        but not yet activated.
226    o pkg/seaice: fix restart problem for ITD with new ice strength parameterisation:
227      - move computation of opnWtrFrac = 1-AREA to before computing ice strength
228      - this changes the results (but not for any verification experiment, because
229        none tests this), but avoids having an extra field in the restart files
230    o pkg/seaice: remove global variable TICE (not needed)
231      - replace by TICES or local variable where necessary (cost_seaice_test,
232        seaice_diagnostics_state)
233      - move copying TICE to TICES from seaice_check_pickup to seaice_read_pickup
234      - use specific read/write routines for reading and writing individual leves
235        of a multilevel field
236    o pkg/ctrl & model/inc:
237      - move additional anomaly fields of control vars (related to options:
238         ALLOW_KAPGM_CONTROL, ALLOW_KAPREDI_CONTROL and ALLOW_BOTTOMDRAG_CONTROL)
239        from DYNVARS.h into new header file: CTRL_FIELDS.h
240    o pkg/seaice: some small modifications to the ridging code
241      - make fw2ObyRidge a global variable and add the freshwater flux to
242        seaice_growth
243      - pass actual thickness from seaice_prepare_ridging, so that it is
244        computed only in one place and compute it in the same way as in
245        seaice_growth
246      - initialise more fields in seaice_do_ridging that where cause floating
247        point exceptions over land
248    o pkg/seaice: preparations for ridging code and first real ridging code
249      - move most of "PART 1" of S/R seaice_growth into a new and separate
250        S/R seaice_reg_ridge that will both regularize the state variable after
251        advection call the actual ridging routine;
252      - requires to make 5 fields global fields: d_HEFFbyNEG,d_HSNWbyNEG,
253        d_AREAbyRLX,d_HEFFbyRLX,saltFluxAdjust;
254      - remove ridging code from seaice_advdiff
255      - clean up remaining part 1 of seaice_growth in an attempt to make it
256        more readable (this is probably subjective)
257      - call seaice_itd_redist once in the initialisation phase to have the initial
258        conditions in the correct category
259      - finally: add new ridging routine for ITD code
260    
261    checkpoint64v (2014/04/11)
262    o pkg/ecco:
263      - add runtime parameters mdt[start,end]date[1,2]
264      - rename variable "tpmean" as "mdt" and "topexmeanfile" as "mdtdatfile"
265    o pkg/seaice:
266      - make deltaC a global variable, so that it can be used in ridging code
267      - first step towards ridging: introduce new routines that compute
268        ice strength based on ridging parameters
269      - add diagnostic for HSNOWITD
270      - add opnWtrFrac as a global variable (required for ridging scheme)
271    o pkg/salt_plume + pkg/seaice/seaice_growth.F
272      - add SALT_PLUME_IN_LEADS flag to activate pkg/salt_plume only when ice
273        AREA exceeds a threshold (code contributed by I.Fenty in 2011)
274    o verification/hs94.1x64x5:
275      - leave ALLOW_AUTODIFF_TAMC undefined in code_oad/AUTODIFF_OPTIONS.h
276      - do not use ECCO_CPPOPTIONS.h anymore for TAF & OpenAD Adjoint tests.
277    o autodiff:
278      - Start to include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h,
279        and CTRL_OPTIONS.h in src files (to enable to skip the ECCO_CPPOPTIONS.h)
280        For now, only in pkgs used in verification/hs94.1x64x5.
281      - Replace ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for tape/storage
282        which are specific to TAF/TAMC).
283      - Replace ALLOW_AUTODIFF_OPENAD by ALLOW_OPENAD:
284        since ALLOW_OPENAD is defined in PACKAGES_CONFIG.h (any time pkg/openad
285        is compiled), this simplifies/reduces which *_OPTIONS.h file to include.
286      - OpenAD: change Makefile to generate the appropriate AD_CONFIG.h when
287        building mitgcmuv_ad (make adAll).
288    o pkg/ecco:
289      - cost_gencost_seaicev4.F:
290         reformulate proxy cost as function of sst and local param SEAICE_freeze
291         change cost names from siv4-[sst,vol] to siv4-[deconc,exconc]
292      - add stop statement if old names siv4-[sst,vol] are used
293      - add snapshots + cost reports for atmospheric longwave
294      - remove factor 0.1 in front of wtau[u,v]
295      - replace never used flag ALLOW_TMI_COST_CONTRIBUTION with
296         ALLOW_TMI_SST_COST_CONTRIBUTION
297    o pkg/atm_phys:
298      - add some diagnostics for Short-wave and for convection S/R.
299    o pkg/seaice/seaice_growth:
300      - fix a bug in the lateral melt parameterization for SEAICE_ITD
301        in seaice_growth; tempFrz needs to be computed inside the i/j-loop
302      - rearrange loop order for better vector code in the same code block
303      - rewrite the floeDiameter formula to have fewer divisions
304      -  (miraculously) none of this changes the results of seaice_itd
305    o pkg/smooth:
306      - move param smooth2Ddiffnbt to pkg/ecco
307    o pkg/salt_plume:
308      - salt_plume_frac.F:
309         clean up local param names
310         reformulate (1-frac) to frac; original 1-frac was based on swfrac code
311    o pkg/rw:
312      - add RS version of S/R READ_MFLDS_LEV.
313    o pkg/streamice:
314      - fix the restart test by writing/reading pickup_streamice files.
315    o pkg/seaice:
316      - refine checks for jfnk-related parameters
317      - comment out if statement with SEAICEuseIMEX parameter as long as there
318        is no IMEX code to avoid confusion and surprises
319    
320    checkpoint64u (2014/03/07)
321    o verification/MLAdjust:
322      - rename secondary test suffix:
323         1.leith  -> A4FlxF  + switch to flux-form & add side-drag
324         0.leithD -> AhFlxF  + switch to flux-form
325         0.smag   -> AhVrDv  (use Vorticity-Div. visc form) + add side-drag
326         0.leith  -> AhStTn  (use Strain-Tension visc form) + add side-drag
327    o pkg/mom_vecinv:
328      - remove unused arguments from S/R MOM_VI_HDISSIP & MOM_HDISSIP (as it used
329        to be before mom_calc_visc.F)
330      - skip the call to MOM_CALC_TENSION & MOM_CALC_STRAIN if not needed.
331      - add 2nd copy of vort3 & strain that knows about lateral BC (free/no slip):
332        this is simpler for the adjoint and for diagnostics.
333    o model/src + pkg/momentum:
334      - add input files for  2-D additional Western and Southern cell-edge wall
335         (e.g., to add "thin-wall" where it is =1).
336      - fix sideDrag option for thin-walls with Non-Lin Free-Surf
337        using 2nd hFacZ that is computed from initial (fix domain) hFac
338      - known limitations of thin wall implementation: not yet coded for sigma
339        coords; not working with CD-scheme neither.
340    o pkg/seaice:
341      - rename recently introduced parameters from (wrong name) AB to
342        BDF (backward difference time discretisation)
343      - retire runtime parameters SEAICEuseAB2, SEAICE_abEps
344    o tools/adjoint_options:
345      - remove setting of "OPENAD=true" (now set by command line "genmake2 -oad")
346    
347    checkpoint64t (2014/02/01)
348    o pkg/ecco
349      - add compile flag ALLOW_GENCOST_TIMEVARY_WEIGHT in ECCO_OPTIONS.h and
350        runtime logical flag gencost_timevaryweight to read daily sea-ice sigma
351      - replace hard-coded record number and period which only work for monthly
352        with read-in runtime param that works for other periods (month,day,year)
353    o pkg/thsice
354      - corrected store directive fixes thsice adjoint gradient checks
355    o genmake2 & testreport:
356      - add genmake2 option "-oad" to generate a Makefile for OpenAD built and
357        in this case, use tools/adjoint_options/adjoint_oad as default AD optfile.
358        Update testreport accordingly. No need to set "export OPENAD=true"
359        in adjoint_options/adjoint_oad anymore (will be removed later).
360    o pkg/shelfice:
361      - put T & S shelfice forcing into model surfaceForcing_T,_S (for now,
362        only if SHELFICEboundaryLayer=F); Change model/src/external_forcing.F
363        so that surface forcing applies to k=kSurf if using pkg/shelfice.
364    o pkg/ctrl, pkg/grdchk, pkg/ecco:
365      - Changes to make GENARR more modular (i.e. invisible if not used)
366    o model/src/temp_integrate.F and salt_integrate.F
367      - re-include store directives that were removed on Dec 27th.
368    o model/src/external_forcing_surf.F
369      - add storage directives for EmPmR and PmEpR to avoid recomputation of
370        seaice_model in the adjoint that is problematic when seaice_model is
371        turned off in the adjoint. The resolved issue dated back to July when
372        EXTERNAL_FORCING_SURF call was moved.
373        Update global_ocean.cs32x15/*/output_adm.seaice_dynmix.txt accordingly.
374    o pkg/exf/exf_check.F
375      - fix a small bug again (originally found by Wentao Liu, now found again)
376      - streamline error output
377    o pkg/streamice and aim_v23:
378      - replace a few "_EXCH_XY_RL (" with "_EXCH_XY_RL(", so that
379        Apple's /usr/bin/cpp knows what to do:
380        Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
381        Target: x86_64-apple-darwin13.0.0
382    
383    checkpoint64s (2014/01/05)
384    o tools/adjoint_options:
385      - switch to fastopt.net TAF server (instead of default fastopt.de) for
386        AD optfiles adjoint_diva & adjoint_f95 (similar to adjoint_default).
387    o model/src:
388      - remove some unnecessary TAF storage directives in forward_step.F and
389        in dynamics.F (note: not always removed by TAF, e.g., double storage
390        of kappaRU,kappaRV in former version of dynamics.F).
391    o model/src & pkg/ptracers:
392      - call directly GAD_IMPLICIT_R & IMPLDIFF + DWNSLP_APPLY from temp_integrate.F
393        salt_integrate.F and ptracers_integrate.F (instead of from thermodynamics.F)
394        and remove ptracers_dwnslp_apply.F & ptracers_implicit.F
395      - call MATRIX_STORE_TENDENCY_EXP for each tracer (in ptracers_integrate.F)
396      - add fZon & fMer as output argument of S/R GAD_CALC_RHS.
397      - update TAF AD-output of experiments global_ocean.90x40x15 (13 for AD-grad).
398    o useSingleCpuInput separates single-CPU input from single-CPU output;
399        for now only implemented for in exf_interp_read.F
400    o verification/advect_xy:
401      - fix missing EXCH call in local version of ini_salt.F and update output.
402    o momentum diagnostics:
403      - fix which deltaT is used in Total-Tendency diagnostics.
404      - fix typo in diagnostics for momentum tendency from AB.
405    o pkg/seaice/seaice_lsr.F: fix an initialisation bug for the
406        SEAICE_VECTORIZE_LSR_ZEBRA option that lead to NaNs on a NEC-SX8
407    
408    checkpoint64r (2013/12/08)
409    o verification/*/results:
410      - Update reference output of experiments that were passing with just 13 digits
411         (make it easier to detect future changes in results)
412    o model/src & pkg/ptracers:
413      - move calls to GAD_ADVECTION (Multi-Dim advection) from thermodynamics.F to
414        inside temp_integrate.F and salt_integrate.F and from ptracers_advection.F
415        to inside ptracers_integrate.F ; remove ptracers_advection.F
416    o coupling interface pkgs:
417        [atm_compon_interf, ocn_compon_interf & atm_ocn_coupler]
418      - change the config check to test the agreement of Ocean Depth
419        with ATM land/sea mask (instead of ATM orography);
420      - send to coupler the number of coupler time-steps to do for this run:
421        this allows to check for consistency and don't need anymore to be
422        specified in parameter file "data";
423      in coupler:
424      - check consistency of RunOff map versus Ocean Depth and ATM land/sea mask.
425      - improve report to log-file of config setting (pass log-file unit to few S/R)
426    o pkg/compon_communic:
427      - add coupling send/receive for non-tiled integer vector;
428      - add S/R to check and stop if any proc has an error (similar to
429        eesupp/src/stop_if_error.F but single thread and across Comm_World).
430    o pkg/exch2:
431      - in exch2*_get_rx[1,2]: use new list "W2_tileIndex" to replace search
432        through list of all tiles my proc owns.
433    o model/src:
434      - AUTODIFF only: in calc_adv_flow.F, recompute rTransKp (instead of copying
435        from rTrans) to simplify dependencies (no need to store rTrans anymore in
436        calling S/R); this affects AD results at machine truncation level:
437        update AD-output (TAF) of experiments: 1D_ocean_ice_column,
438        bottom_ctrl_5x5 & obcs_ctrl (12 digits for AD grad, same FWD grad).
439    o tools/build_options:
440      - simplify Warnings options (-ieee & -devel cases) in linux_amd64_gfortran
441    o coupling interface pkgs:
442        [compon_communic, atm_compon_interf & ocn_compon_interf]
443      - move declaration of local array "ibuf" out of header file "CPLR_SIG.h"
444        to each S/R that needs it; remove un-used variables.
445      - change component tile registration (cpl_register.F in both compon_interf
446        and mitcomponent_tile_register.F) to pass the full list of tiles
447        information (including bi,bj) in 1 vector (instead of in a bi,bj matrix).
448      - with pkg/exch2: adopt the same convention used for I/O to define mapping
449        towards coupler global array (unless W2_useE2ioLayOut=F):
450         a) can now use different tiling between atm & ocn comp.
451         b) no needs to modify the run-Off map when changing tiling (was needed
452            even if using the same tiling between atm & ocn).
453         c) will allow to run with blank-tiles in 1 component (e.g., for ocean
454            full land tiles); not yet tested.
455      - check for valid mapping from comp. tile to coupler global array
456      - improve report of tile registration results to log file.
457    o pkg/exch2:
458      - in eesupp/src/eeboot.F: move call to W2_EEBOOT before Coupler
459        tile-registration (CPL_REGISTER);
460      - activate (un-comment) definition and setting of "W2_tileIndex" list to
461        store the local bi,bj indices of each tile;
462      - also print bi,bj in local report to log file;
463      - fix pkg/debug/debug_cs_corner_uv.F for the case nSy > 1 (left from
464        Jun 2009 modif of pkg/exch2).
465    o testing on baudelaire:
466      - run 2 tests at a time: no significant slow down (since enough cpu) and
467        get the full set of test done earlier
468      - switch the ifort test to "-devel" ; run the OpenAD test everyday.
469    o model/src/thermodynamics.F and routines called from it:
470      - pkg/gmredi: gmredi_residual_flow.F (replacing gmredi_calc_uvflow.F &
471        gmredi_calc_wflow.F) to update eulerian velocity (input) into residual
472        velocity (outp) by adding bolus velocity.
473      - model/src: calc_adv_flow.F (replacing calc_common_factors.F) to compute
474        mass transport from velocity + lateral grid cell area
475      - rename calc_gt.F to temp_integrate.F (includes call to TIMESTEP_TRACER)
476      - rename calc_gs.F to salt_integrate.F (includes call to TIMESTEP_TRACER)
477     in thermodynamics.F
478      - remove k from thermodynamics.F and move it to temp_integrate.F
479        salt_integrate.F and ptracers_integrate.F (now done inside the tracer
480        loop).
481      - compute locally (in thermodynamics.F) 3-D velocity field that is used to
482        advect tracers; pass it as argument to GAD_ADVECTION, GAD_SOM_ADVECT,
483        PTRACERS_ADVECTION, TEMP_INTEGRATE, SALT_INTEGRATE, PTRACERS_INTEGRATE,
484        GAD_IMPLICIT_R and PTRACERS_IMPLICIT
485      - update AD-output (TAF & OAD) of experiments: 1D_ocean_ice_column,
486        global_ocean.90x40x15, tutorial_global_oce_biogeo and
487        tutorial_tracer_adjsens (+ TLM output).
488    o tools/OAD_support and (verification/*/) code_oad:
489      - OAD_support/cb2mGetModules.csh: add PACKAGES_CONFIG.h in header file to
490        module conversion ; remove unneeded CPP_EEOPTIONS.h.
491      - code_oad/CPP_OPTIONS.h: remove PACKAGES_CONFIG.h and use a more standard
492        version (closer to model/inc/CPP_OPTIONS.h).
493    o model/src:
494      - remove parameter "useOldFreezing" from PARAMS.h and push it to the
495        retired list of parameters (routine FREEZE has been replace by surface
496        freezing (10.yrs ago) and by pkg/frazil (interior freezing).
497    o pkg/gmredi:
498      - add option (GM_CALC_TRANSP_FROM_VEL) to compute transport directly from
499        velocity (same scheme but affects machine truncation) for GM_AdvForm.
500      - update output of FWD experiments: front_relax.bvp,
501        global_ocean.90x40x15.dwnslp, global_ocean.cs32x15 and ideal_2D_oce.
502    
503    checkpoint64q (2013/11/17)
504    o verification:
505      - generate new output on baudelaire (gfortran, -ieee) for OpenAD experiments
506        tutorial_global_oce_biogeo and global_ocean.90x40x15.
507      - generate new output (growth & melt) for seaice_itd experiment after
508        updating the input pickup_seaice files (previously wrong).
509    o pkg/cost:
510      - define a "final cost function" for each tile, and use GLOBAL_SUM_TILE_RL
511        (instead of _GLOBAL_SUM_RL) to get the final cost from all procs & threads:
512        o this fixes global-sum value if multi-threads (since GLOBAL_SUM_RL
513          cannot be applied to var in common block).
514        o allows to get results independent of tile-per-proc setting (if using
515          slower GLOBAL_SUM_SEND_RECV option).
516      - update accordingly: seaice_cost_final.F, shelfice_cost_final.F,
517        thsice_cost_final.F and ecco_cost_final.F (this one affects lab_sea
518        forward gradients: update output).
519      - update */code_oad/externalDummies.F by adding dummy GLOBAL_SUM_TILE_RL
520        S/R and, for most exp., also comment out GLOBAL_SUM_R8.
521    o pkg/mom_common:
522      - move to pkg/mom_common and model/src (previously in tutorial_deep_convection
523        code) 2nd version of isotropic 3-D Smagorinsky code interface: strain and
524        viscosity are locally declared in dynmics.F and pass as argument to CALC_GW;
525        ensure that all field value that are used are set.
526    o tutorial_deep_convection (smag3d):
527      - add missing scaling in mom_calc_smag_3d.F;
528      - set smag3D_coeff in input.smag3d such that results do not change.
529    o pkg/dic:
530      - change dic_cost.F to compute cost on each tile first and then apply
531        GLOBAL_SUM_TILE_RL: this affects forward gradient of AD experiments
532        tutorial_dic_adjoffline & tutorial_global_oce_biogeo; update output.
533      - remove kLev argument and use GLOBAL_SUM_TILE_RL in tracer_meanarea.
534    o eesupp/src & pkg/mdsio:
535      - remove gather/scatter_vector.F (from eesupp) and mdsio_read/writevector.F
536        (from pkg/mdsio) since they are no longer used for tape IO.
537      - move simple C subroutine "setdir.c" from pkg/compon_communic to eesupp/src
538        (+ keep a copy in pkg/atm_ocn_coupler).
539    o verification/isomip:
540      - split domain in 8 squared tiles (instead of just 2) for FWD, AD & OAD tests.
541    o tools/build_options:
542      - optfile linux_amd64_ifort11, fast (no ieee) case:
543        to get a working restart for all experiments, add "-fp-model source"
544        to FOPTIM (also remove "-opt-streaming-stores auto" <- this is the default).
545    
546    checkpoint64p (2013/10/20)
547    o pkg/autodiff:
548      - adread_adwrite.F: when type and length do not match ALLOW_AUTODIFF_WHTAPEIO
549        criteria, return to simple (default) tape IO format.
550    o pkg/mdsio (+ eesupp/src):
551      - rewrite/simplify tape-IO S/R (new S/R MDS_READ/WRITE_TAPE replace
552        previous MDSREAD/WRITEVECTOR) with 2 array argument from each type (R4/R8);
553      - fix globalFile and singleCpuIO options using simpler global mapping.
554      - new pairs of scatter/gather vector S/R (one for each type, generated from
555        template) corresponding to simpler global mapping.
556      - adread_write.F: switch to new S/R (but leave old calls commented) and write
557        to globalFile when parameter globalFiles is set to True.
558      - switch on useSingleCpuIO in AD experiments: global_ocean.90x40x15 & isomip.
559    o pkg/autodiff:
560      - adread_adwrite.F: add a hack for RS arrays (when RS=real*4);
561        with ALLOW_AUTODIFF_WHTAPEIO defined, since corresponding (real*4) is
562        missing, just add a STOP if array type do not match.
563    o pkg/exf:
564      - to allow to use seaice-fraction from pkg/exf in other pkgs than pkg/seaice:
565         rename CPP option EXF_ALLOW_SEAICE_RELAX to EXF_SEAICE_FRACTION
566         and rename array obsSIce to exf_iceFraction.
567    o tutorial_deep_convection:
568      - add 1rst version of isotropic 3-D Smagorinsky code (from Louis-Philippe),
569        for now all in this exp. code dir.
570      - add secondary test using Smag-3D viscosity (keep very low backgroud visc for
571        testing) and flux-limter advection scheme for Temp. (no explicit diffusion).
572    o eesupp/src:
573      - added SINGLE_DISK_IO option because reading of parameter files on
574        very large number of processors did not work with existing set-up
575    
576    checkpoint64o (2013/09/25)
577    o pkg/atm_phys & atm_compon_interf:
578      - allows for coupling of gray-atmosphere (atm_phys) with ocean.
579    o tools/build_options:
580      - switch from "-fPIC" to "-mcmodel=medium" in optfiles: linux_amd64_gfortran
581        & linux_amd64_ifort11 and in linux_amd64_g77 & linux_amd64_open64 also
582        remove CPP setting (was identical to genmake2 default).
583    o pkg/gmredi & model/src: Some updating and work done on the residual model.
584      - created new file model/src/calc_eddy_stress.F to calculate the eddy stress.
585      - fixed up the calculation of the eddy stress and how it is added to the
586        external forcing via taueddy_external_forcing.F
587      - at the moment, it is very experimental and only works with the variable eddy
588        diffusivity calculated in gmredi_k3d.F
589    o pkg/seaice/seaice_check.F: add a check to catch the case of specifying
590        lw/swfluxfile instead of lw/swdownfile in data.exf together with pkg/seaice
591    o testreport (& tools/do_tst_2+2):
592      - for MPI test, set default COMMAND to 'mpirun -v -np TR_NPROC ./{executable}'
593    o tools/build_options: linux_amd64_gfortran & linux_amd64_ifort11:
594      - remove CPP='cpp -traditional -P' (this is genmake2 default)
595      - add switch (for big setups) to use 'medium' memory-model (but leave it
596        commented out for now). Note: needed with FC 19 to compile big setups.
597    o pkg/atm_compon_interf:
598      - regroup per field origin (model & pkgs) the coupling storage routines
599         (which accumalate in time each coupling field)
600      - move bi,bj loops inside atm_store_my_data.F and store also wind-stress;
601        update accordingly + simplify aim_do_physics.F
602    
603    checkpoint64n (2013/08/26)
604    o pkg/bbl:
605      - update formulation to reduce dispersion of tracer properties in bbl
606      - replaced horizontal and vertical transport parameters with velocities
607      - changes results for verification/global_with_exf.yearly
608    o verification/halfpipe_streamice:
609      - change to matrix construction; update both Fwd & AD output.
610    o verification/tutorial_tracer_adjsens:
611      - OpenAD test: switch to vector-invariant momentum since fluxform with
612        rStar causes problems with OpenAD; update output.
613    o tools:
614      - genmake2: define a common prefix for all temp-file names ; move them
615        to local /tmp disk (but would be easy to move them back);
616      - xmakedepend: apply the same switch for temp-files.
617    o pkg/offline:
618      - changes for use with rStar (NLFS): assume that we continue to provide
619        UVELMASS/hFacW_ini & VVELMASS/hFacS_ini (hFacWi,S_ini as written in grid
620        output files) and apply r* scaling at each time-step (function of the time
621        varying Eta field); use normal pickup files (needed for restart with NLFS).
622    o adjoint with OpenAD:
623      - move OpenAD-specific files from verification/OpenAD/code_oad_all to a new
624        package openad.  This package has to be compiled for all runs with OpenAD
625        instead of specifying code_oad_all as a modification directory.
626      - link the fortran templates from tools/OAD_support to the build directory
627        for preprocessing to avoid conflicts between different setups compiled
628        simultaneously and simplify cleanup.
629    o pkg/exf:
630      - in exf_getforcing.F: comment out most of the EXCH calls (fields used by
631        main model or other pkgs are exchanged in EXF_MAPFIELDS).
632    o model/src:
633      - do_stagger_fields_exchanges.F: skip EXCH calls when using pkg/offline
634        (similar to do_fields_blocking_exchanges.F).
635    o tools/genmake2:
636      - remove TAF output src code just before calling staf (when not doing a fresh
637        built, will stop if things go wrong with staf).
638      - fix target "adobj" (left from TAF version-2 transition)
639    o pkg/diagnostics:
640      - add a parameter to track the status of pkg/diagnostics activation;
641        this replace/extend the use of logical param "settingDiags" (to check
642        when adding diag to the list) to also check any DIAGNOSTICS_[]FILL* call.
643        New S/R to print error message and stop when pkgStatus is not right.
644      - to try: add a warning when "data.diagnostics" exist but useDiagnostics=F.
645    
646    checkpoint64m (2013/08/13)
647    o model/inc:
648      - move FCORI_MACROS.h from PARAMS(_MACROS).h to GRID_MACROS.h (left from
649        8 yrs ago modif when Coriolis arrays were moved from PARAMS.h to GRID.h)
650    o pkg/kpp & aim_v23:
651      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
652    o pkg/seaice:
653      - restore (last time on 2011/12/24) ability to compile pkg/seaice with
654        undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
655      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
656    o eesupp/src:
657      - fix check for overlap-size argument (myOLn.GT.MAX_OLY_EXCH)
658        in exch1_rx[_ad].template (thanks to Francois Lefeuvre report).
659    o switch to TAF version-2:
660      - add flow directives to "freeze" naming convention for ad-routines that
661        are used in I/O routines of adjoint state and associated common blocks
662        that are used in adcommon.h (backward compatible with version-1)
663      - update all ad-optfiles (in tools/adjoint_options + few local to some
664        verification exp) to switch to latest TAF version (currently 2.5.5);
665        merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
666        out except for diva).
667      - the major change with TAF version-2 is that both the differentiated
668        routines and the forward routines (new) are returned as part of the TAF
669        output source code. Update genmake2 accordingly.
670      - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
671        with version-2 when compared to TLM or FWD gradient); other experiments
672        output show minor changes (machine truncation level); update the few AD &
673        TLM output with 12 matching digits only (some prior to version-2 switch).
674    
675    checkpoint64l (2013/08/05)
676    o model/src:
677      - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
678      - main_do_loop.F: no longer includes additional (AUTODIFF) header files
679        when using TAF but only if using OpenAD.
680    o pkg/mom_common+fluxform+vecinv:
681      - always set horiz. viscosity arrays to background value before calling
682        MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
683        only when using variable horiz. viscosity (useVariableVisc=T);
684      - simplify mom_vecinv.F (only 1 block for momViscosity).
685    o pkg/mom_common: variable horiz. viscosity in NH code
686      - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
687        from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
688      - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
689        useBiharmonicVisc & useVariableVisc.
690      - fix old bug (already in 1rst implementation of variable horizontal viscosity
691        in calc_gw.F, version 1.27, 2006/06/20):
692        horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
693        even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
694      - change background horiz viscosity in vertical momentum (gW) to always be
695        viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
696        any type of variable viscosity, e.g., viscAh/4Grid)
697      - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
698        viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
699        horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
700        default viscAh,viscA4 is zero).
701    o model/src:
702      - extend length of drC & recip_drC from Nr to Nr+1.
703    o Divided Adjoint (DIVA) with MPI:
704      - genmake2: do not create local ./mpi_headers dir when no file to copy into.
705      - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT
706        and ALLOW_USE_MPI) from model/src code and from ECCO_CPPOPTIONS.h.
707    
708    checkpoint64k (2013/07/23)
709    o tools/OAD_support:
710      - avoid the need for file "oadtempflile" in insertTemplateDir.bash
711        and remove it from genmake2.
712    o tools/build_options:
713      - remove MPI_HEADER_FILES_INC setting (no longer used) and comment out
714        MPI_HEADER_FILES list (let genmake2 find the missing headers)
715    o verification/halfpipe_streamice:
716      - change to driving stress formulation; update both Fwd & AD output.
717    o tools/genmake2 and Divided Adjoint with MPI:
718      - remove default setting of MPIINCLUDEDIR from $MPIHOME (always been broken);
719      - only create local ./mpi_headers dir if using MPI and MPIINCLUDEDIR is set;
720      - add new variable (LOCAL_MPI_HEADERS, replace MPI_HEADER_FILES_INC) in
721        Makefile, which is set by genmake2, and check which mpi-headers are needed.
722        Note: need to update adjoint_options/adjoint_diva_mpi accordingly.
723      - update target "CLEAN" (to also remove ./mpi_headers/ dir).
724    o testreport:
725      - changes for Divided Adjoint Run: when file "run_ADM_DIVA" is present,
726        perform additional runs (number of additional runs is "add_DIVA_runs" taken
727        from file run_ADM_DIVA ; should match "nchklev_3" in file "code_ad/tamc.h").
728    o verification/lab_sea (AD test):
729      - change to test Divided Adjoint Run in this set-up (both standard AD test
730        and 2 secondary AD test: noseaice + noseaicedyn); drop the evp AD test.
731    o pkg atm_ & ocn_compon_interf:
732      - remove cpl_earlyExpImpCall=F option (was mainly a hack added for the old
733        staggerTimeStep implementation) and disable (retired) corresponding
734        parameter.
735    o pkg/offline:
736      - comment out unused field-array: ICEM, ConvectCount, hflx[01], icem[01];
737      - add S/R OFFLINE_CHECK to print offline parameter summary
738        and stop if loading a file that is not used;
739      - enable to calculate GMRedi tensor, KPP mixing and convective index
740        when the corresponding file(s) is/are not specified (but pkg is used).
741      - comment out resetting of monitorFreq (to endTime) since it still useful
742        for monitoring CFL numbers and checking offline fields.
743    o OpenAD:
744      - do not define OAD_DEBUG (in tools/adjoint_options/adjoint_oad) to get
745        smaller standard output) and generate new (smaller) output (on baudelaire
746        using gfortran with -ieee) for exp. tutorial_tracer_adjsens
747    o model/src:
748      - call EXTERNAL_FORCING_SURF outside bi,bj loops (in do_oceanic_phys.F),
749        (where external_forcing_adjust was called) and change list of arguments;
750      - merge external_forcing_adjust.F into external_forcing_surf.F
751      - put surface relaxation of SST & SSS in new S/R (forcing_surf_relax.F)
752        which also contains balancing surface relaxation (ALLOW_BALANCE_RELAX,
753        previously in file "balance_relax.F", now removed); remove corresponding
754        arrays in FFIELDS.h.
755      - EXTERNAL_FORCING_SURF is now called when using pkg/offline; implement
756        a hack for getting back surfaceForcingS (loaded from file) when using
757        ALLOW_OLD_VIRTUALFLUX (pkg/dic, in DIC_OPTIONS.h) in offline set-up.
758      - update output of AD test experiment global_ocean.cs32x15.seaice_dynmix
759        (was getting only 11 digits for AD-grad, due to different truncation
760         error in AD code).
761    
762    checkpoint64j (2013/07/04)
763    o pkg/offline:
764      - to enable the use of other features with pkg offline (e.g., obcs),
765        also call S/R DO_OCEANIC_PHYS in offline run - more modifs to come.
766      - comment out "allowFreezing" (now active) in 2 offline testing exp.
767    o pkg/exf ALLOW_RUNOFTEMP
768      - fix sign and make compatible with temp_EvPrRn .NE. UNSET_RL
769      - ahdded RUNOFTEMP test to verification/global_ocean.cs32x15/input.seaice
770      - changes verification/global_ocean.cs32x15/results/output.seaice.txt
771    o pkg/atm_phys:
772      - allows to add some damping on uVel,vVel (strength only function of k).
773    o verification, ad-tests:
774      - reduce length of the simulation for AD test: global_ocean.cs32x15.seaice,
775        global_ocean_ebm and offline_exf_seaice.thsice.
776    o verification/halfpipe_streamice:
777      - found a bug in s/r pkg/streamice/streamice_advect_thickness which caused
778        flux input boundary conditions to be ignored; a fix for this bug changed
779        verification results for forward test.
780      - add adjoint test.
781    o pkg/ptracers:
782      - allow to restart without SOM pickup (resetting SOM to zero).
783    o pkg/gmredi:
784      - New parameterisation for the calculation of K and (GM_PsiX,GM_PsiY) added.
785      - It uses mixing length theory and suppression by steering level effects to
786        calculate a diffusivity used in the Redi tensor (see Bates et al., submitted
787        to JPO, for more details).
788      - It also uses the diffusivity to calculate an eddy induced streamfunction
789        based on a PV closure (rather than a buoyancy closure as in GM).
790      - New files added to pkg/gmredi:
791        gmredi_k3d.F calculates the diffusivity for the Redi tensor and the eddy
792          induced overturning streamfunction (called from gmredi_calc_tensor)
793        gmredi_calc_eigs.F calculates the eigenvalues and eigenvectors required
794          for use in gmredi_k3d
795        gmredi_calc_urms.F calculates the the rms eddy velocity used to calculate
796          the eddy diffusivity
797    
798    checkpoint64i (2013/06/18)
799    o pkg/cheapaml:
800      - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
801        that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
802        with pkg/cheapaml.
803    o utils/python: add subpackage for cubed sphere function, first example is
804        simple cs.pcol to plot 2D fields on a map
805    o pkg/streamice:
806      - This is a new package in MITgcm, which solves dynamic equations for ice
807         sheets and ice streams
808      - At the moment it is independent of atmosphere/ocean dynamics, or any
809        other physical packages in MITgcm, even ShelfIce (although it is anticipat-
810        ed that this will change)
811      - There is a new verification exercise that tests it, halfpipe_streamice,
812        evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
813        rectangular embayment
814      - halfpipe_streamice is forward-only for now, will have TAF test soon
815      - for questions, email dgoldber@mit.edu
816    o pkg/thsice:
817      - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
818        of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
819      - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
820         call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
821      - allow precip from pkg/cheapaml to make snow over seaice.
822    o pkg/cfc:
823      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
824      - remove atmos CFC 2-D arrays from common bloc (now local variables)
825      - change some hard-coded constant to run time parameter for reading and
826        and interpolating atmospheric CFC ; keep same default as previously.
827      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
828      - put arguments in standard order: myTime, myIter, myThid
829      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
830        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
831      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
832      - new routine to print summary of CFC params and check for consistency.
833    o pkg/seaice: add uice/vice to the parameter list of s/r seaice_advdiff,
834      similar to thsice_advdiff.
835      Note that for the B-grid case the routine parameters uc/vc are overwritten.
836    o pkg/cfc:
837      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
838        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
839      - fix interpolation of atmphspheric CFC between Sorthern and Northern
840        hemisphere value.
841    o pkg/seaice:
842      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
843    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
844                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
845      - requires an additional time level that is stored in the pickup
846      - you can start with AB2 from a pickup without this time level with
847        pickupStrictlyMatch = .false.
848    
849    checkpoint64h (2013/05/26)
850    o pkg/cheapaml:
851      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
852        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
853      - consistent treatment of uWind,vWind location: assume everywhere in
854        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
855        (Note: was already the case for Tair,Qair advection);
856        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
857      - compute diabatic forcing only in the interior (excluding overlap regions)
858      - fill in array "Qsw" (for short-wave heating);
859      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
860        before any update (consistent with MITgcm state var diagnostics);
861      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
862        non periodic ; + adjusted for uWind,vWind (C-grid).
863    o pkg/seaice:
864      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
865        add explicitly pkg/exf in experiments that currently use pkg/seaice.
866      - allows to compile pkg/seaice without pkg/exf.
867    o tools/OAD_support:
868      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
869        of array "ourStepOf" in function rvNextAction (revolve.F90).
870    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
871      - change pkg name (to be used with other atmospheric physics pkg)
872        but by-pass CVS when making the new pkg so that we keep the CVS history.
873    o pkg/offline:
874      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
875        (previously called from pkg/dic_surfforcing_init.F)
876    o model/src:
877      - re-order sequence of calls within packages_init_variables.F, using
878        standard order, except for:
879         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
880         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
881    o new pkg: atm_phys
882      - add entry point and source code (previously in contrib
883          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
884        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
885      - re-order sequence of calls within packages_readparms.F,
886         packages_init_fixed.F and packages_write_pickup.F
887        (but skip packages_init_variables.F because of TAF issues).
888      - update contrib/*/atm_gray/ experiment.
889    o pkg/seaice (ITD code):
890      - simplify and fix the writing of pickup-files for ITD case
891    o pkg/seaice (ITD code):
892      - introduce floe size dependent lateral melt for ITD case;
893      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
894      - update seaice_itd experiment main output.
895    o pkg/thsice:
896      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
897        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
898        changed accordingly pkg/atm2d.
899    
900    checkpoint64g (2013/05/01)
901    o pkg/exf ALLOW_RUNOFTEMP
902      - if defined,  river and glacier runoff temperature can be read-in from
903        runoftempfile; runoftempfile needs to have same format as runofffile
904    o pkg/thsice (& pkg/bulk_force):
905      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
906        for energy content of Precip + RunOff & Evap (like with pkg/exf).
907      - change computation domain to always be the interior (without overlap).
908      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
909    o verification/tutorial_global_oce_biogeo:
910      - add preliminary OpenAD setup (still has problems)
911    o pkg/seaice:
912      - turn some parameters for choosing the convergence criterion of
913        the inexact Newton method (JFNK) into runtime parameters for convenience
914      - clean up seaice_calc_viscosities.F: remove/retire two options for
915        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
916        the results of lab_sea/input because a division has been replaced by
917        a multiplication with the reciprocal (sumNorm)
918      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
919        convergence of solver (changes results, of course), and to test some
920        new features
921    o model/src:
922      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
923      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
924      - move forcing adjustment (balancing surface forcing) in specific S/R
925        where might also be applied exchanges (if needed) to forcing arrays.
926    o pkg/shelfice:
927      - allow to specify the Ice-Shelf mass per unit area (instead of
928        shelficeLoadAnomaly) and do the conversion from one to the other
929      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
930        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
931        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
932        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
933      - update isomip experiment forward output (get machine truncation error
934        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
935    o verification/offline_exf_seaice:
936      revise data.seaice in input.thermo and input_ad and update results accordingly
937        HO = 0.2, SEAICE_areaLossFormula = 2,
938        SEAICE_growMeltByConv = .TRUE.,
939        SEAICE_doOpenWaterMelt = .TRUE.,
940      Improve consistency with input.thsice and fix the spurious 500m ice corners
941    o verification/global_ocean.cs32x15:
942      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
943        in icedyn (thsice+seaice-dyn) test and update output.
944    o verification/offline_exf_seaice:
945      - adjust list of tested variables (with testreport) and update
946        standard test output with better slection of monitored fields.
947    o pkg/cd_code:
948      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
949        experiment lab_sea.hb87
950    o tools/genmake2:
951      - change default makedepend from the system default to tools/xmakedepend:
952        When no makedepend is specified, select tools/xmakedepend it the test pass,
953        otherwise select the system default (if exist and pass the test) or
954        try to build cyrus-makedepend ; stop if none of the 3 works.
955    o pkg/exf & pkg/thsice:
956      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
957        for energy content of Precip + RunOff & Evap. Assumes:
958       1) Rain has same temp as Air.
959       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
960       3) Run-Off comes at the temp of surface water (with same Cp)
961       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
962        put directly into Latent Heat flux & should use water-vapor heat capacity.
963       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
964        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
965    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
966        (compile when SEAICE_ALLOW_JFNK is defined)
967    o pkg/thsice:
968      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
969        implementation): move THSICE_AVE call after the advection (called directly
970        from thsice_do_advect.F).
971    o verification/global_ocean.90x40x15 and OpenAD:
972      New experiment for OpenAD is identical to the one in input_ad except that
973        multiDimAdvection=.FALSE.,
974      There is still an issue with this.
975    o pkg/thsice:
976      - account for ice velocity (ocean relative velocity) in turbulent heat flux
977        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
978        and offline_exf_seaice (main test).
979    
980    checkpoint64f (2013/03/31)
981    o verification/OpenAD:
982      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
983    o verification/isomip, pkg/shelfice and OpenAD:
984      - add OpenAD setup to this exp and make shelfice package work with OpenAD
985    o verification/tutorial_global_oce_biogeo:
986      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
987    o verification/offline_exf_seaice:
988      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
989    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
990      - add OpenAD setup to this exp and make ptracers package work with OpenAD
991    o pkg/seaice/seaice_evp.F:
992       mask the asymmetric contribution of the ice-ocean stress (when
993       the turningAngle is non-zero) over open water to avoid stripes
994       in the EVP-solutions after many EVP-substeps. This does not change
995       the verification experiment (because turningAngle=0 in that experiment),
996       but will affect other EVP solutions with turningAngle.ne.0
997    o verification, AD & TLM output:
998      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
999        additions and multiplications which affect results at machine truncation
1000        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
1001        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
1002        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
1003        digits of matching.
1004    o pkg/seaice:
1005       modify lsr-algorithm so that it vectorizes AND converges by using a
1006       "zebra" method: split vector loop into two with step size 2; this
1007       solves a general convergence problem for the JFNK solver on a vector
1008       computer. It has the potential to even improve convergence for
1009       non-vector machines, but it does change the results so it is turned
1010       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
1011       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
1012    
1013    checkpoint64e (2013/03/05)
1014    o pkg/ecco and several verification experiments:
1015       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
1016       from ecco package, and revert to unified routine in model/src/
1017       Adjust verification experiments accordingly, especially gloal_oce_llc90
1018       Should conclude long-standing work by Gael to reconsile the_main_loop with
1019       ECCO and will enable OpenAD's revolve loop in ECCO setup.
1020    o pkg/generic_advdiff:
1021      - implement compressible flow method for multi-dim advection (similar to
1022        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
1023        TAF generates many recomputations) to use it; no yet coded with implicit
1024        vertical advection.
1025      - change experiment advect_cs (new output) and advect_xy (same output)
1026        to test compressible flow multi-dim advection.
1027    o pkg/generic_advdiff:
1028      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
1029        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
1030    o pkg/seaice:
1031      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
1032        bug affects two verification experiments (lab_sea and lab_sea.hb87),
1033        recover old (wrong) results by setting noSlipFac = 2. in
1034        seaice_calc_strainrates.F;
1035      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
1036      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
1037        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
1038      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
1039    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
1040      - new subroutines seaice_lsr_tridiagu/v
1041      - introduce loop bounds i/jmin/max to be able to use a restricted
1042        additive Schwarz method, but not used for now.
1043      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
1044      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
1045    o OpenAD support
1046       Reorganize S/R call for overall time-stepping loop to facilitate
1047       OpenAD revolve loop replacement
1048       (new S/R main_do_loop.F)
1049    o model/src:
1050      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
1051      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
1052        ADAMS_BASHFORTH2.
1053    o pkg/cheapaml:
1054      - add new parameter (default=F, same as before) to disable full domain
1055        (including land) periodicity in X & Y dir.
1056      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
1057        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
1058        into single S/R CHEAPAML_TIMESTEP.
1059    
1060    checkpoint64d (2013/02/17)
1061    o pkg/monitor (angular momentum):
1062      - do not add Eta contribution to the total AM if using rigid-lid;
1063      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
1064      - horizontal discretisation: compute Zonal wind contribution separately for
1065        each component (instead of from cell centered averaged) and use the 4
1066        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
1067      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
1068        FreeSurf) if using vectorInvariant momentum.
1069    o model/src (horizontal grid):
1070      - move initialisation of all horizontal grid arrays to null value
1071        from specific horizontal grid S/R to main S/R INI_GRID;
1072      - add 2 new arrays to project model C-grid velocity on to zonal direction
1073        (similar to AngleCosC & -AngleSinC but at U and V point location) and
1074        compute them in S/R CALC_GRID_ANGLES.
1075    o pkg/seaice: replace a hard coded parameter by a runtime parameter
1076        SEAICE_JFNK_tolIter
1077    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
1078        preconditioner for JFNK (run LSR into the overlaps as far as possible,
1079        i.e OLx/y-2, but overwrite the solution in the overlaps)
1080      - extend loop range in seaice_calc_viscosity
1081      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
1082      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
1083      - slightly modify loops in tridiagonal solver lsr-preconditioner
1084      - by default remove the extra exchange in seaice_preconditioner with a
1085        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
1086      - modify offline_exf_seaice so that old results without RAS are reproduced
1087        for output.dyn_jfnk.txt
1088      in seaice_fgmres.F (unrelated to RAS)
1089      - add a cpp-flag option for a re-ordered mapping (potentially more
1090        efficient), but because this changes the results, turn it off by
1091        default
1092      - replace the save statement by local common blocks
1093    o utils/matlab:
1094      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
1095      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
1096        instead of local script "load_cs.m".
1097    o pkg/seaice:
1098      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
1099        to the scalarProductMetric and the unrolling. By chance this does not
1100        change the verification experiment, because of the particular domain
1101        decomposition
1102  o pkg/diagnostics:  o pkg/diagnostics:
1103    - change default missing_value from UNSET_RL to -999.    - change default missing_value from UNSET_RL to -999.
1104  o pkg/layers: improve vectorization of layers_fluxcalc.F  o pkg/layers: improve vectorization of layers_fluxcalc.F
1105    - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu    - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
1106      time spent in this routine by more than a factor of 3 on an NEC-SX8      time spent in this routine by more than a factor of 3 on an NEC-SX8
1107    - step 2: replace search algorithm by a bisection algorithm found in    - step 2: replace search algorithm by a bisection algorithm found in
1108      Press et al. Numerical Recipes in Fortran. This algorithm can be      Press et al. Numerical Recipes in Fortran. This algorithm can be
1109      vectorized and finds the correct bin in approx. log2(Nlayers) steps.      vectorized and finds the correct bin in approx. log2(Nlayers) steps.
1110      For now, use this algorithm only for TARGET_NEC_SX defined.      For now, use this algorithm only for TARGET_NEC_SX defined.
1111    - moved the search algorithm into a separate subroutine, that is kept    - moved the search algorithm into a separate subroutine, that is kept

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