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revision 1.1295 by jmc, Sat Sep 11 21:39:13 2010 UTC revision 1.1344 by gforget, Thu Dec 2 18:54:35 2010 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o nesting pkgs:
8      - packages_init_variables : put call to OBCS_INIT_VARIABLES in last position
9      - update Gianmaria's Nesting pkgs (from Contrib/nesting_sannino)
10      - add parameter files + utils dir + output from short run on beagle.
11    o pkg/seaice:
12        fix seaice_growth.F store directives; update results of exp. lab_sea.ad
13    o pkg/seaice: explicitly store tsurfloc in seaice_solve4temp.F to avoid
14      unnecessary copying in adjoint code, requires new parameter NMAX_ITER
15    
16    checkpoint62o (2010/11/25)
17    o pkg/exf:
18      - change CPP option EXF_VERBOSE to run-time logical param exf_verbose.
19    o pkg/seaice:
20      - seaice_ocean_stress: split a loop for better vectorization of the
21        adjoint code
22      - seaice_growth.F: fix bug in conservation of freshwater connected to
23        capping of heff, put contribution into d_HEFFbyNEG
24      - replace irritating parameters SEAICE_latentWater/Ice and SEAICE_sensHeat
25        by something more sensible (parameters that are what their name implies)
26      - change some defaults, so that by default exf-parameters are used for
27        things like rhoAir, cpAir,latent/sensible heat parameters, in order
28        to reproduce the old results, many data.seaice now contain funny values
29        for cpAir and latent heat of sublimation
30    o packages_readparms.F: move exf_readparms up in line so that
31        exf-parameters are visible for other packages (e.g. seaice)
32    o debugMode & debugLevel=2:
33      - differentiate between debugMode & debugLevel=2:
34        debugMode: controls printing of debug messages (sequence of S/R calls).
35        debugLevel: controls printing of algorithm intermediate results and stats.
36      - remove "if debugLevel=2 => debugMode" but keep "debugMode =>  debugLevel=2";
37        => allows to print debug-stats without all sequence of call messages.
38      - switch control of debug print from debugLevel to debugMode in many S/R.
39    o pkg/obcs (obcs-sponge):
40        fix bug that was introduced on Oct 25 (in dynamics.F v1.151): put back the
41        call to OBCS_PRESCRIBE_EXCHANGES (need to exch gU,gV when using obcs-sponge)
42    o pkg/generic_advdiff:
43      - record overlap minimum size for each advection scheme;
44      - refine criteria on overlap minimum size;
45      - check and stop (in gad_check) if overlap size is too small.
46    o pkg/obcs:
47      - with ptracers: remove multiple calls to obcs_apply_ptracer (only done
48        once, in ptracers_implicit.F)
49      - with seaice: remove test on empty file name in obcs_apply_seaice (always
50        apply OB values when tile has OB)
51    o model/src, coriolis setting:
52      - integer parameter "selectCoriMap" (=0,1,2) replaces 3 logical
53        useConstantF, useBetaPlaneF, useSphereF ; can now read coriolis from
54        files (selectCoriMap=3) with any grid.
55      - add parameter "fPrime" for constant second Coriolis coeff (default=0).
56    o pkg/seaice/seaice_growth.F:
57        a few cosmetic changes that reduce the number of lines of code
58    o pkg/obcs: add boundary conditions following Stevens (1990)
59      - the code follows old MOM/NAOSIM code
60      - so far it is only implemented for the eastern and western boundaries
61        and NOT for pTracers
62    o pkg/rbcs:
63      - replace rbcsInIter by rbcsForcingOffset, the time in seconds at the
64        beginning of the first rbcs forcing period.
65      - add option rbcsSingleTimeFiles that makes rbcs read forcing data like the
66        offline package, i.e., one file per time, labeled by iteration number;
67        deltaTrbcs sets the timestep with which the data was generated;
68        rbcsIter0 is the forcing iteration corresponding to rbcsForcingOffset.
69      - rbcsForcingCycle=0 makes forcing non-cyclic.
70      - make arithmetic safe for negative times and odd forcing periods.
71    
72    checkpoint62n (2010/11/09)
73    o pkg/seaice:
74        fix masking in free-drift S/R ; update results of exp. lab_sea.fd
75    o pkg/obcs:
76       New S/R to copy tracer value from the OB location to narrow band region
77        (width = same as overlap) beyond the OB: preserve OB value (needed for
78        high-order scheme) which were overwritten by EXCH call if in overlap
79        region. Applied to theta, salt, ptracer and advected seaice variables.
80       With seaice: use maskInC in similar way as in gad_advection.F,
81        in seaice_advection.F and advect.F.
82       Update output of experiment seaice_obcs and change exp4 to test OBCS with
83        4th order Adv.Scheme. for pasive salt and ptracer.
84    o tools/genmake2:
85      - when looking for an optfile (not specified), only search for Fortran compiler
86        (remove sym-link test + setting of CPP + makedepend check + C-compiler check)
87      - in get_fortran_c_namemangling: use "$CC $CFLAG" to compile C test programm
88        (instead of "$MAKE genmake_test.o" since an existing Makefile can be wrong)
89      - set default for CPP to "cpp -traditional -P" (was the case without specifying
90        an optfile, but otherwise default was just "cpp".
91      - comment out PLATFORM=$p_PLATFORM (no idea where p_PLATFORM comes from)
92      - when "CC" is not set in the optfile, look for possible C compiler
93        (instead of just setting CC=cc)
94      - put back version v.169 modif (from 2008/02/15), was dropped in v.173 changes:
95        => add a ".F" to ".o" rule for source files with no "#include" (such as
96           port_rand.F); otherwise, default ignores FOPTIM and just uses FFLAGS.
97      - move gfortran before g77 in list of possible Fortran compiler (consistent
98        with reference compiler switch from g77 to gfortran)
99    o pkg/seaice:
100      o remove SEAICE_OLD_AND_BAD_DISCRETIZATION-code, add a test to
101        seaice_check that stops the model, when the CPP flag is used.
102      o seaice_growth.F: make capping of ice volume conserving by returning the
103        capped ice as freshwater to EmPmR. This does not change the verification
104        experiments but will change runs where the capping is acutally active
105    o change reference platform+compiler from faulks+g77 to baudelaire+gfortran
106      (except the 2 fizhi test exp.); update output of exp.: bottom_ctrl_5x5,
107         global_ocean.cs32x15 (icedyn, thsice, AD thsice), global_ocean_ebm (AD),
108         lab_sea (fd, hb87, salt_plume), MLAdjust (3/5) and vermix (dd)
109    o tools/genmake2:
110      - merge genmake_warnings & genmake_errors into 1 log file: "genmake.log")
111      - change DUMPSTATE default to false (can use "-ds" option to switch it to T)
112      - clean previous genmake log files before anything else.
113      - change Makefile to remove testreport log files (*.tr_log) and genmake log
114        files only with "CLEAN" target (instead of "Clean");
115    o pkg/generic_advdiff:
116      Change OBCS in multiDim advection (gad_advection.F):
117       Use maskInC to prevent intermediate update of tracer-field in OB regions,
118       thus keeping current-time-step OB values; and remove the call to OBCS_APPLY
119       which were applying future time-step OB values.
120      This way, all explicit calculations use current-time-step OB values
121       (simpler and more consistent).
122      Affects results when set-up uses time-varying OBC and multi-dim advection;
123       update output of experiment seaice_obcs.
124    o pkg/seaice:
125      move OPTIONS (formerly locally defined) to SEAICE_OPTIONS.h:
126       this includes SEAICE_GROWTH_LEGACY (+ SEAICE_DO_OPEN_WATER_GROWTH &
127         SEAICE_OCN_MELT_ACT_ON_AREA ) and SEAICE_SOLVE4TEMP_LEGACY.
128      Default (pkg/seaice/SEAICE_OPTIONS.h) is to define SEAICE_SOLVE4TEMP_LEGACY
129       but leave SEAICE_GROWTH_LEGACY undef ; For now, keep verification exp
130       unchanged (SEAICE_GROWTH_LEGACY defined in */code*/SEAICE_OPTIONS.h)
131    o pkg aim (2010/10/26):
132      - Introduce ALLOW_INSOLATION, moving toward a more general incoming solar radiation
133        formulation with obliquity, eccentricity, ... as run-time parameters,
134      - Introduce diagnostics for top-of-the-atmaophere incoming solar radiation and
135        upward shortwave radition at the surface (all-sky and clear-sky).
136    o pkg/obcs:
137      - writing sections with globalFiles=T does not work: switch to tiled-files
138        when writing sections for OBCS (change pkg/rw/write_rec.F accordingly).
139      - fix index bug (OB_Ie -> OB_Iw_) in obcs_apply_uvice.F
140      - apply OBCS_SEAICE_COMPUTE_UVICE to both uice and vice at all obcs
141    
142    checkpoint62m (2010/10/21)
143    o pkg/seaice: vectorize seaice_solve4temp.F
144      - move iterations loops outside of i/j-loops
145      - requires 2D arrays for TB and effConduct
146      - add 2D iceOrNot to replace HICE_ACTUAL.GT.0, as HICE_ACTUAL is
147        modified in this routine
148      - a little bit of clean up, adjusting indentation, etc.
149      - replaced a few TEN**a by exp(a*log(10.)) in new code for better
150        performance and '**TWO' by '**2' (because TWO is a float),
151        replaced ONE, ZERO
152    o eesupp/src:
153       fix flow dir for exch1_z_RX_cube, exch1_uv_RX_cube & exch1_bg_RX_cube
154    o pkg/seaice/seaice_growth.F
155      Revision 1.89 of seaice_growth.F completes the overall october 2010 revision and
156      merging process. The merged routine has two branches, and one activates the 'evolution'
157      branch by setting SEAICE_GROWTH_LEGACY to undef (at the top of the routine for now).
158      In summary, here is what the '10/10 revision' did consist of
159        part 1: seaice_growth.F revisions 1.71 to 1.75
160          - Preliminary seaice_growth.F clean-up, keeping test results strictly unchanged.
161            The emphasis here was on improving readability (e.g. by trying to use meaningful
162            variable names) and modularity (e.g. by adding arrays to store heff etc. updates).
163        part 1.5:
164          - revising the lab_sea experiment to make it a more useful (i.e. stable
165            and representative of an actual model run). This was done by generating a
166            (winter) pickup to start from, switching back the main experiment dynamic
167            solver from evp to lsr, having one of the experiments use the free drift solution.
168        part 2: seaice_growth.F revisions 1.76 to 1.85
169          - Sorting out hard-coded constants that prevented heat and fresh water conservation.
170          - Sorting out the various fields units and sign (set early on and reset at the end)
171            to avoid numerous scalings/re-scalings. By v1.85 the basic unit for ice, heat and
172            fresh water stock is 'effective ice meters', and >0 implies more ice/snow.
173          - Using tendency terms arrays (d_HEFF* etc.) to alleviate remaining code locks,
174            and simplifying logical expressions to further improve readibility.
175        part 3: seaice_growth.F revisions 1.86 to 1.89
176          - Re-organize the blocks of code more logically.
177          - Merging the '_if.F' pieces that add something new.
178    o pkg/thsice:
179      - vectorize thsice_solve4temp and thsice_get_exf.
180        Problem: thsice_solve4temp has an unvectorizable statement that
181        might also be problematic for TAF
182      - thsice_get_exf: add the ALLOW_BULK_LARGEYEAGER04 CPP-flag. This
183        does not change the verifcation experiment, but will change all
184        experiments that have this flag undefined (not tested in verification);
185        a little reorganization to save a few 2D fields and recomputations
186      - 1st step of revisiting thsice adjoint (major recomp. sorted out)
187      - 2nd step:  fix some store dirs
188        o seems to work somewhat, i.e. using ifort but not g77
189        o likely cause are incomplete init. or recomputation
190        o start verification/global_ocean.cs32x15/input_ad.thsice
191    o pkg/obcs: add support for exch2
192      - the position of the boundary and prescribed values are specified using
193        a global domain with exch2 facets stacked
194        - in x for N,S boundaries (like W2_mapIO=-1)
195        - in y for E,W boundaries (so E,W boundaries do not overlap)
196    o pkg/mdsio: add support for writing global sections with exch2
197        file layout is as for obcs described above:
198        - for x-z sections, facets are stacked in x (like W2_mapIO=-1)
199        - for y-z sections, facets are stacked in y
200    o pkg/thsice:
201       - change a few routines for better vectorization: thsice_albedo.F,
202         thsice_step_temp.F, and in thsice_calc_thickn.F. Results are
203         not affected, but in particular the latter routine has changed
204         dramatically (not necessarily easier to read now).
205       - re-arrange calculation in THSICE_SOLVE4TEMP: move outside of i,j loops
206       iteration loop and call to S/R THSICE_GET_BULKF & THSICE_GET_EXF.
207    o verification/lab_sea:
208      - overhaul of the forward model experiments. The main motivation
209        for this revision is that lab_sea has proven quite fragile (when
210        changing the sea-ice code, and switching platforms) to a point
211        when failures were very hard to attribute to specific code problems.
212      - the suspected reason for this fragility is noise amplification by evp so,
213        to start with, we decided to replace evp with lsr in the main experiment.
214      - the input.lsr experiment thus became obsolete and was removed.
215      - it was replaced with the input.fd experiment that uses an
216        analytical "free drift" solution as the ice velocity field.
217      - Taken together, input (lsr), input.fd (free drift) and input.hb87 (evp)
218        will hopefully allow us to discriminate problems due to dynamic solvers
219        from problems due to the thermodynamic code. input.salt_plume (lsr) allows
220        us to test additional options, along with the salt plume package.
221      - Finally a pickup was generated (at the end of a one year run) to
222        make the tests more representative of an actual model run. Previously
223        the tests starting point was a 1m thickness of ice everywhere.
224    o pkg/seaice:
225      - introducing S\R seaice_freedrift.F that compute the
226        analytical solution to an approximate ice momentum
227        equation (i.e. the simple stress/coriolis balance).
228      - define SEAICE_ALLOW_FREEDRIFT to trigger the computation
229        of the free drift velocity field, and enable its use.
230        To actually use the free drift solution as the model ice
231        velocity field set SEAICEuseFREEDRIFT to .TRUE. in data.seaice.
232    o move "useOASIS" from PARAMS.h to EEPARAMS.h and read it from "eedata"
233    
234    checkpoint62l (2010/10/04)
235    o pkg/seaice:
236      -fix the USE_ORIGINAL_SBI version (for variable freezing point);
237      -use "celsius2K" in SEAICE_VARIABLE_FREEZING_POINT and in new
238       version (with USE_ORIGINAL_SBI undef);
239    o add hooks for new packages OASIS, the package will follow
240      (hooks exclude the seaice pkg for now)
241    o pkg/autodiff: ALLOW_AUTODIFF_WHTAPEIO
242      Option to use mdsio_read_whalos.F/mdsio_write_whalos.F,
243      rather than mdsio_readvector.F/mdsio_writevector.F, within
244      adread_adwrite.F to read/write adjoint-related tapes to disk.
245    o eesupp and pkg/mdsio: ALLOW_WHIO
246      Option to write/read 2D fields to files including tiles halos.
247      The main purpose is for adjoint related "tape I/O".
248      The secondary purpose is for debugging phases.
249      A word on those rather specifically intended purposes.
250      The code was meant to be stripped down to the bare minimum.
251      Typically, there is a unique and basic mapping to the global
252      buffer (tile by tile, then proc by proc, then level by level), and
253      byteswaps and meta-files are omitted. Indeed the (*_WH*) code is not
254      meant to generate user friendly outputs of various shapes and forms.
255      Rather it is intended, for the knowledgeabale developers,
256      to be largely independent of the many mdsio options, to allow
257      outputs of tiles+halos in debugging phases and in adjoint runs,
258      and to allow some flexibility in tuning (adoint) I/O depending on each
259      file system behavior. With regard to tuning, most of the potential knobs
260      (to leave files open, to allocate the I/O indep. of usesinglecpuio,
261      to specify directories, to specify the typical size of I/O calls, etc.)
262      are not yet included, and will be added if they prove useful.
263    o pkg/seaice:
264       fix uninitialised arrays in USE_ORIGINAL_SBI version of seaice_solve4temp.F
265    o pkg/seaice:
266       new S/R seaice_solve4temp.F: this is the merged version of Ian Fenty
267       code (seaice_budget_ice_if.F) which enable to recover old standard
268       code (seaice_budget_ice.F) when option USE_ORIGINAL_SBI is defined.
269       temporary: add "#define USE_ORIGINAL_SBI" at the top of seaice_solve4temp.F.
270    o model/src (rStar):
271       use simple average (not area weighted) of rStarFac at U,V point when using
272       vectorInvariant and selectKEscheme=1,3 (consistent with mom. vertical advection)
273       update output of exp. fizhi-cs-32x32x40 and fizhi-cs-aqualev20.
274    
275    checkpoint62k (2010/09/17)
276    o adjoint
277       * changed verification/global_ocean.cs32x15 ; adjoint now tests
278         Adams-Bashforth 3 + NLFS + RSTAR
279       * some more modifs required for ECCO-GODAE v4
280    o pkg/seaice
281       add SEAICE_AGE_VOL option to use volume instead of area for
282       integrating SEAICE_AGE
283  o model/src:  o model/src:
284     first check-in of sigma & hybrid-sigma coordinate code ; also includes     first check-in of sigma & hybrid-sigma coordinate code ; also includes
285     non-linear free-surface parts ; but pressure-gradient not yet coded.     non-linear free-surface parts ; but pressure-gradient not yet coded.
# Line 273  o tools/build_options: Line 549  o tools/build_options:
549      but keep the former optfile for few weeks for smooth transition      but keep the former optfile for few weeks for smooth transition
550  o pkg/ecco  o pkg/ecco
551    - allow user defined cost function contributions    - allow user defined cost function contributions
552          CPP: ALLOW_USERCOST_CONTRIBUTION       CPP: ALLOW_USERCOST_CONTRIBUTION
553          USAGE: compute contributions in cost_usercost_all.F       USAGE: compute contributions in cost_usercost_all.F
554    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.
555        the two options are complementary.        the two options are complementary.
556  o pkg/smooth  o pkg/smooth

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