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revision 1.1295 by jmc, Sat Sep 11 21:39:13 2010 UTC revision 1.1343 by jmc, Mon Nov 29 14:17:41 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: explicitly store tsurfloc in seaice_solve4temp.F to avoid
12      unnecessary copying in adjoint code, requires new parameter NMAX_ITER
13    
14    checkpoint62o (2010/11/25)
15    o pkg/exf:
16      - change CPP option EXF_VERBOSE to run-time logical param exf_verbose.
17    o pkg/seaice:
18      - seaice_ocean_stress: split a loop for better vectorization of the
19        adjoint code
20      - seaice_growth.F: fix bug in conservation of freshwater connected to
21        capping of heff, put contribution into d_HEFFbyNEG
22      - replace irritating parameters SEAICE_latentWater/Ice and SEAICE_sensHeat
23        by something more sensible (parameters that are what their name implies)
24      - change some defaults, so that by default exf-parameters are used for
25        things like rhoAir, cpAir,latent/sensible heat parameters, in order
26        to reproduce the old results, many data.seaice now contain funny values
27        for cpAir and latent heat of sublimation
28    o packages_readparms.F: move exf_readparms up in line so that
29        exf-parameters are visible for other packages (e.g. seaice)
30    o debugMode & debugLevel=2:
31      - differentiate between debugMode & debugLevel=2:
32        debugMode: controls printing of debug messages (sequence of S/R calls).
33        debugLevel: controls printing of algorithm intermediate results and stats.
34      - remove "if debugLevel=2 => debugMode" but keep "debugMode =>  debugLevel=2";
35        => allows to print debug-stats without all sequence of call messages.
36      - switch control of debug print from debugLevel to debugMode in many S/R.
37    o pkg/obcs (obcs-sponge):
38        fix bug that was introduced on Oct 25 (in dynamics.F v1.151): put back the
39        call to OBCS_PRESCRIBE_EXCHANGES (need to exch gU,gV when using obcs-sponge)
40    o pkg/generic_advdiff:
41      - record overlap minimum size for each advection scheme;
42      - refine criteria on overlap minimum size;
43      - check and stop (in gad_check) if overlap size is too small.
44    o pkg/obcs:
45      - with ptracers: remove multiple calls to obcs_apply_ptracer (only done
46        once, in ptracers_implicit.F)
47      - with seaice: remove test on empty file name in obcs_apply_seaice (always
48        apply OB values when tile has OB)
49    o model/src, coriolis setting:
50      - integer parameter "selectCoriMap" (=0,1,2) replaces 3 logical
51        useConstantF, useBetaPlaneF, useSphereF ; can now read coriolis from
52        files (selectCoriMap=3) with any grid.
53      - add parameter "fPrime" for constant second Coriolis coeff (default=0).
54    o pkg/seaice/seaice_growth.F:
55        a few cosmetic changes that reduce the number of lines of code
56    o pkg/obcs: add boundary conditions following Stevens (1990)
57      - the code follows old MOM/NAOSIM code
58      - so far it is only implemented for the eastern and western boundaries
59        and NOT for pTracers
60    o pkg/rbcs:
61      - replace rbcsInIter by rbcsForcingOffset, the time in seconds at the
62        beginning of the first rbcs forcing period.
63      - add option rbcsSingleTimeFiles that makes rbcs read forcing data like the
64        offline package, i.e., one file per time, labeled by iteration number;
65        deltaTrbcs sets the timestep with which the data was generated;
66        rbcsIter0 is the forcing iteration corresponding to rbcsForcingOffset.
67      - rbcsForcingCycle=0 makes forcing non-cyclic.
68      - make arithmetic safe for negative times and odd forcing periods.
69    
70    checkpoint62n (2010/11/09)
71    o pkg/seaice:
72        fix masking in free-drift S/R ; update results of exp. lab_sea.fd
73    o pkg/obcs:
74       New S/R to copy tracer value from the OB location to narrow band region
75        (width = same as overlap) beyond the OB: preserve OB value (needed for
76        high-order scheme) which were overwritten by EXCH call if in overlap
77        region. Applied to theta, salt, ptracer and advected seaice variables.
78       With seaice: use maskInC in similar way as in gad_advection.F,
79        in seaice_advection.F and advect.F.
80       Update output of experiment seaice_obcs and change exp4 to test OBCS with
81        4th order Adv.Scheme. for pasive salt and ptracer.
82    o tools/genmake2:
83      - when looking for an optfile (not specified), only search for Fortran compiler
84        (remove sym-link test + setting of CPP + makedepend check + C-compiler check)
85      - in get_fortran_c_namemangling: use "$CC $CFLAG" to compile C test programm
86        (instead of "$MAKE genmake_test.o" since an existing Makefile can be wrong)
87      - set default for CPP to "cpp -traditional -P" (was the case without specifying
88        an optfile, but otherwise default was just "cpp".
89      - comment out PLATFORM=$p_PLATFORM (no idea where p_PLATFORM comes from)
90      - when "CC" is not set in the optfile, look for possible C compiler
91        (instead of just setting CC=cc)
92      - put back version v.169 modif (from 2008/02/15), was dropped in v.173 changes:
93        => add a ".F" to ".o" rule for source files with no "#include" (such as
94           port_rand.F); otherwise, default ignores FOPTIM and just uses FFLAGS.
95      - move gfortran before g77 in list of possible Fortran compiler (consistent
96        with reference compiler switch from g77 to gfortran)
97    o pkg/seaice:
98      o remove SEAICE_OLD_AND_BAD_DISCRETIZATION-code, add a test to
99        seaice_check that stops the model, when the CPP flag is used.
100      o seaice_growth.F: make capping of ice volume conserving by returning the
101        capped ice as freshwater to EmPmR. This does not change the verification
102        experiments but will change runs where the capping is acutally active
103    o change reference platform+compiler from faulks+g77 to baudelaire+gfortran
104      (except the 2 fizhi test exp.); update output of exp.: bottom_ctrl_5x5,
105         global_ocean.cs32x15 (icedyn, thsice, AD thsice), global_ocean_ebm (AD),
106         lab_sea (fd, hb87, salt_plume), MLAdjust (3/5) and vermix (dd)
107    o tools/genmake2:
108      - merge genmake_warnings & genmake_errors into 1 log file: "genmake.log")
109      - change DUMPSTATE default to false (can use "-ds" option to switch it to T)
110      - clean previous genmake log files before anything else.
111      - change Makefile to remove testreport log files (*.tr_log) and genmake log
112        files only with "CLEAN" target (instead of "Clean");
113    o pkg/generic_advdiff:
114      Change OBCS in multiDim advection (gad_advection.F):
115       Use maskInC to prevent intermediate update of tracer-field in OB regions,
116       thus keeping current-time-step OB values; and remove the call to OBCS_APPLY
117       which were applying future time-step OB values.
118      This way, all explicit calculations use current-time-step OB values
119       (simpler and more consistent).
120      Affects results when set-up uses time-varying OBC and multi-dim advection;
121       update output of experiment seaice_obcs.
122    o pkg/seaice:
123      move OPTIONS (formerly locally defined) to SEAICE_OPTIONS.h:
124       this includes SEAICE_GROWTH_LEGACY (+ SEAICE_DO_OPEN_WATER_GROWTH &
125         SEAICE_OCN_MELT_ACT_ON_AREA ) and SEAICE_SOLVE4TEMP_LEGACY.
126      Default (pkg/seaice/SEAICE_OPTIONS.h) is to define SEAICE_SOLVE4TEMP_LEGACY
127       but leave SEAICE_GROWTH_LEGACY undef ; For now, keep verification exp
128       unchanged (SEAICE_GROWTH_LEGACY defined in */code*/SEAICE_OPTIONS.h)
129    o pkg aim (2010/10/26):
130      - Introduce ALLOW_INSOLATION, moving toward a more general incoming solar radiation
131        formulation with obliquity, eccentricity, ... as run-time parameters,
132      - Introduce diagnostics for top-of-the-atmaophere incoming solar radiation and
133        upward shortwave radition at the surface (all-sky and clear-sky).
134    o pkg/obcs:
135      - writing sections with globalFiles=T does not work: switch to tiled-files
136        when writing sections for OBCS (change pkg/rw/write_rec.F accordingly).
137      - fix index bug (OB_Ie -> OB_Iw_) in obcs_apply_uvice.F
138      - apply OBCS_SEAICE_COMPUTE_UVICE to both uice and vice at all obcs
139    
140    checkpoint62m (2010/10/21)
141    o pkg/seaice: vectorize seaice_solve4temp.F
142      - move iterations loops outside of i/j-loops
143      - requires 2D arrays for TB and effConduct
144      - add 2D iceOrNot to replace HICE_ACTUAL.GT.0, as HICE_ACTUAL is
145        modified in this routine
146      - a little bit of clean up, adjusting indentation, etc.
147      - replaced a few TEN**a by exp(a*log(10.)) in new code for better
148        performance and '**TWO' by '**2' (because TWO is a float),
149        replaced ONE, ZERO
150    o eesupp/src:
151       fix flow dir for exch1_z_RX_cube, exch1_uv_RX_cube & exch1_bg_RX_cube
152    o pkg/seaice/seaice_growth.F
153      Revision 1.89 of seaice_growth.F completes the overall october 2010 revision and
154      merging process. The merged routine has two branches, and one activates the 'evolution'
155      branch by setting SEAICE_GROWTH_LEGACY to undef (at the top of the routine for now).
156      In summary, here is what the '10/10 revision' did consist of
157        part 1: seaice_growth.F revisions 1.71 to 1.75
158          - Preliminary seaice_growth.F clean-up, keeping test results strictly unchanged.
159            The emphasis here was on improving readability (e.g. by trying to use meaningful
160            variable names) and modularity (e.g. by adding arrays to store heff etc. updates).
161        part 1.5:
162          - revising the lab_sea experiment to make it a more useful (i.e. stable
163            and representative of an actual model run). This was done by generating a
164            (winter) pickup to start from, switching back the main experiment dynamic
165            solver from evp to lsr, having one of the experiments use the free drift solution.
166        part 2: seaice_growth.F revisions 1.76 to 1.85
167          - Sorting out hard-coded constants that prevented heat and fresh water conservation.
168          - Sorting out the various fields units and sign (set early on and reset at the end)
169            to avoid numerous scalings/re-scalings. By v1.85 the basic unit for ice, heat and
170            fresh water stock is 'effective ice meters', and >0 implies more ice/snow.
171          - Using tendency terms arrays (d_HEFF* etc.) to alleviate remaining code locks,
172            and simplifying logical expressions to further improve readibility.
173        part 3: seaice_growth.F revisions 1.86 to 1.89
174          - Re-organize the blocks of code more logically.
175          - Merging the '_if.F' pieces that add something new.
176    o pkg/thsice:
177      - vectorize thsice_solve4temp and thsice_get_exf.
178        Problem: thsice_solve4temp has an unvectorizable statement that
179        might also be problematic for TAF
180      - thsice_get_exf: add the ALLOW_BULK_LARGEYEAGER04 CPP-flag. This
181        does not change the verifcation experiment, but will change all
182        experiments that have this flag undefined (not tested in verification);
183        a little reorganization to save a few 2D fields and recomputations
184      - 1st step of revisiting thsice adjoint (major recomp. sorted out)
185      - 2nd step:  fix some store dirs
186        o seems to work somewhat, i.e. using ifort but not g77
187        o likely cause are incomplete init. or recomputation
188        o start verification/global_ocean.cs32x15/input_ad.thsice
189    o pkg/obcs: add support for exch2
190      - the position of the boundary and prescribed values are specified using
191        a global domain with exch2 facets stacked
192        - in x for N,S boundaries (like W2_mapIO=-1)
193        - in y for E,W boundaries (so E,W boundaries do not overlap)
194    o pkg/mdsio: add support for writing global sections with exch2
195        file layout is as for obcs described above:
196        - for x-z sections, facets are stacked in x (like W2_mapIO=-1)
197        - for y-z sections, facets are stacked in y
198    o pkg/thsice:
199       - change a few routines for better vectorization: thsice_albedo.F,
200         thsice_step_temp.F, and in thsice_calc_thickn.F. Results are
201         not affected, but in particular the latter routine has changed
202         dramatically (not necessarily easier to read now).
203       - re-arrange calculation in THSICE_SOLVE4TEMP: move outside of i,j loops
204       iteration loop and call to S/R THSICE_GET_BULKF & THSICE_GET_EXF.
205    o verification/lab_sea:
206      - overhaul of the forward model experiments. The main motivation
207        for this revision is that lab_sea has proven quite fragile (when
208        changing the sea-ice code, and switching platforms) to a point
209        when failures were very hard to attribute to specific code problems.
210      - the suspected reason for this fragility is noise amplification by evp so,
211        to start with, we decided to replace evp with lsr in the main experiment.
212      - the input.lsr experiment thus became obsolete and was removed.
213      - it was replaced with the input.fd experiment that uses an
214        analytical "free drift" solution as the ice velocity field.
215      - Taken together, input (lsr), input.fd (free drift) and input.hb87 (evp)
216        will hopefully allow us to discriminate problems due to dynamic solvers
217        from problems due to the thermodynamic code. input.salt_plume (lsr) allows
218        us to test additional options, along with the salt plume package.
219      - Finally a pickup was generated (at the end of a one year run) to
220        make the tests more representative of an actual model run. Previously
221        the tests starting point was a 1m thickness of ice everywhere.
222    o pkg/seaice:
223      - introducing S\R seaice_freedrift.F that compute the
224        analytical solution to an approximate ice momentum
225        equation (i.e. the simple stress/coriolis balance).
226      - define SEAICE_ALLOW_FREEDRIFT to trigger the computation
227        of the free drift velocity field, and enable its use.
228        To actually use the free drift solution as the model ice
229        velocity field set SEAICEuseFREEDRIFT to .TRUE. in data.seaice.
230    o move "useOASIS" from PARAMS.h to EEPARAMS.h and read it from "eedata"
231    
232    checkpoint62l (2010/10/04)
233    o pkg/seaice:
234      -fix the USE_ORIGINAL_SBI version (for variable freezing point);
235      -use "celsius2K" in SEAICE_VARIABLE_FREEZING_POINT and in new
236       version (with USE_ORIGINAL_SBI undef);
237    o add hooks for new packages OASIS, the package will follow
238      (hooks exclude the seaice pkg for now)
239    o pkg/autodiff: ALLOW_AUTODIFF_WHTAPEIO
240      Option to use mdsio_read_whalos.F/mdsio_write_whalos.F,
241      rather than mdsio_readvector.F/mdsio_writevector.F, within
242      adread_adwrite.F to read/write adjoint-related tapes to disk.
243    o eesupp and pkg/mdsio: ALLOW_WHIO
244      Option to write/read 2D fields to files including tiles halos.
245      The main purpose is for adjoint related "tape I/O".
246      The secondary purpose is for debugging phases.
247      A word on those rather specifically intended purposes.
248      The code was meant to be stripped down to the bare minimum.
249      Typically, there is a unique and basic mapping to the global
250      buffer (tile by tile, then proc by proc, then level by level), and
251      byteswaps and meta-files are omitted. Indeed the (*_WH*) code is not
252      meant to generate user friendly outputs of various shapes and forms.
253      Rather it is intended, for the knowledgeabale developers,
254      to be largely independent of the many mdsio options, to allow
255      outputs of tiles+halos in debugging phases and in adjoint runs,
256      and to allow some flexibility in tuning (adoint) I/O depending on each
257      file system behavior. With regard to tuning, most of the potential knobs
258      (to leave files open, to allocate the I/O indep. of usesinglecpuio,
259      to specify directories, to specify the typical size of I/O calls, etc.)
260      are not yet included, and will be added if they prove useful.
261    o pkg/seaice:
262       fix uninitialised arrays in USE_ORIGINAL_SBI version of seaice_solve4temp.F
263    o pkg/seaice:
264       new S/R seaice_solve4temp.F: this is the merged version of Ian Fenty
265       code (seaice_budget_ice_if.F) which enable to recover old standard
266       code (seaice_budget_ice.F) when option USE_ORIGINAL_SBI is defined.
267       temporary: add "#define USE_ORIGINAL_SBI" at the top of seaice_solve4temp.F.
268    o model/src (rStar):
269       use simple average (not area weighted) of rStarFac at U,V point when using
270       vectorInvariant and selectKEscheme=1,3 (consistent with mom. vertical advection)
271       update output of exp. fizhi-cs-32x32x40 and fizhi-cs-aqualev20.
272    
273    checkpoint62k (2010/09/17)
274    o adjoint
275       * changed verification/global_ocean.cs32x15 ; adjoint now tests
276         Adams-Bashforth 3 + NLFS + RSTAR
277       * some more modifs required for ECCO-GODAE v4
278    o pkg/seaice
279       add SEAICE_AGE_VOL option to use volume instead of area for
280       integrating SEAICE_AGE
281  o model/src:  o model/src:
282     first check-in of sigma & hybrid-sigma coordinate code ; also includes     first check-in of sigma & hybrid-sigma coordinate code ; also includes
283     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 547  o tools/build_options:
547      but keep the former optfile for few weeks for smooth transition      but keep the former optfile for few weeks for smooth transition
548  o pkg/ecco  o pkg/ecco
549    - allow user defined cost function contributions    - allow user defined cost function contributions
550          CPP: ALLOW_USERCOST_CONTRIBUTION       CPP: ALLOW_USERCOST_CONTRIBUTION
551          USAGE: compute contributions in cost_usercost_all.F       USAGE: compute contributions in cost_usercost_all.F
552    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.
553        the two options are complementary.        the two options are complementary.
554  o pkg/smooth  o pkg/smooth

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