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revision 1.1301 by jmc, Fri Sep 24 13:55:01 2010 UTC revision 1.1356 by jahn, Wed Dec 22 21:28:00 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 pkg/flt:
8      - add fourth-order Runge-Kutta integration
9      - add basic exch2 support (only 1 facet supported so far!)
10    o pkg/mdsio+rw:
11      new S/R to read local (or tile independent) vector (read counterpart of
12       mds_writevec_loc, and front-end write_glvec_rl/rs).
13    o global_ocean.cs32x15: additional input_ad.seaice experiment
14        that uses pkg/seaice rather than pkg/thsice.
15        (using multidim advection for seaice)
16    o towards more F95 syntax for array specification in namelist:
17      - change "data.diagnostics" (data.ptracers was changed before checkpoint62p)
18        of all verification experiments.
19           e.g.:    line: fields(1,3)='ETAN    ','ETANSQ  ',
20          was changed to: fields(1:2,3)='ETAN    ','ETANSQ  ',
21      - finish adding "-DNML_EXTENDED_F77" to DEFINES list in pgf77 and g77 optfiles
22    o global_ocean.cs32x15: additional input.seaice experiment
23        that uses pkg/seaice rather than pkg/thsice.
24    
25    checkpoint62p (2010/12/17)
26    o pkg/thsice: rename (ad tape index) iicekey as ticekey, and move it
27        to THSICE_SIZE.h to avoid conflict with pkg/seaice.
28    o pkg/seaice: add seaice_diffusion.f seaice_map_thsice.f to adjoint.
29        allow for use of multim. advection in seaice adjoint.
30    o pkg/seaice: add diagnostics for snow precipitation and sublimation flux
31      - first attempt to close budgets by taking into account the freshwater
32        flux implied by the sublimation of snow and ice. So far only the
33        volume budget is closed, turn on with soon-to-be-retired-again CPP-Flag
34        SEAICE_ADD_SUBLIMATION_TO_FWBUDGET
35    o eesupp/src:
36      new S/R with new option (NML_EXTENDED_F77) to change array specification
37      from F95 standard to commonly accepted extended F77 form.
38      This would allow to use F95 syntax in namelist (needed with gfortran 4.4.5)
39      and to revert back to the original syntax (with -DNML_EXTENDED_F77)
40      for less tolerant f77 compiler (e.g., pgf77, g77).
41    o globalFiles:
42      commented out in parameter file "data" since it's not safe with MPI
43      (e.g., wrong on aces); keep it if useSingleCpuIO=T (but not doing much
44      in this case); no longer commented out in restart test (tst_2+2).
45    o add adTapeDir to specify a special directory where adjoint tapes are
46      written/read (adread_adwrite.F). adTapeDir is specified in data/PARM05
47      and cannot be used together with mdsioLocalDir.
48    o nesting pkgs:
49      - packages_init_variables : put call to OBCS_INIT_VARIABLES in last position
50      - update Gianmaria's Nesting pkgs (from Contrib/nesting_sannino)
51      - add parameter files + utils dir + output from short run on beagle.
52    o pkg/seaice:
53        fix seaice_growth.F store directives; update results of exp. lab_sea.ad
54    o pkg/seaice: explicitly store tsurfloc in seaice_solve4temp.F to avoid
55      unnecessary copying in adjoint code, requires new parameter NMAX_ITER
56    
57    checkpoint62o (2010/11/25)
58    o pkg/exf:
59      - change CPP option EXF_VERBOSE to run-time logical param exf_verbose.
60    o pkg/seaice:
61      - seaice_ocean_stress: split a loop for better vectorization of the
62        adjoint code
63      - seaice_growth.F: fix bug in conservation of freshwater connected to
64        capping of heff, put contribution into d_HEFFbyNEG
65      - replace irritating parameters SEAICE_latentWater/Ice and SEAICE_sensHeat
66        by something more sensible (parameters that are what their name implies)
67      - change some defaults, so that by default exf-parameters are used for
68        things like rhoAir, cpAir,latent/sensible heat parameters, in order
69        to reproduce the old results, many data.seaice now contain funny values
70        for cpAir and latent heat of sublimation
71    o packages_readparms.F: move exf_readparms up in line so that
72        exf-parameters are visible for other packages (e.g. seaice)
73    o debugMode & debugLevel=2:
74      - differentiate between debugMode & debugLevel=2:
75        debugMode: controls printing of debug messages (sequence of S/R calls).
76        debugLevel: controls printing of algorithm intermediate results and stats.
77      - remove "if debugLevel=2 => debugMode" but keep "debugMode =>  debugLevel=2";
78        => allows to print debug-stats without all sequence of call messages.
79      - switch control of debug print from debugLevel to debugMode in many S/R.
80    o pkg/obcs (obcs-sponge):
81        fix bug that was introduced on Oct 25 (in dynamics.F v1.151): put back the
82        call to OBCS_PRESCRIBE_EXCHANGES (need to exch gU,gV when using obcs-sponge)
83    o pkg/generic_advdiff:
84      - record overlap minimum size for each advection scheme;
85      - refine criteria on overlap minimum size;
86      - check and stop (in gad_check) if overlap size is too small.
87    o pkg/obcs:
88      - with ptracers: remove multiple calls to obcs_apply_ptracer (only done
89        once, in ptracers_implicit.F)
90      - with seaice: remove test on empty file name in obcs_apply_seaice (always
91        apply OB values when tile has OB)
92    o model/src, coriolis setting:
93      - integer parameter "selectCoriMap" (=0,1,2) replaces 3 logical
94        useConstantF, useBetaPlaneF, useSphereF ; can now read coriolis from
95        files (selectCoriMap=3) with any grid.
96      - add parameter "fPrime" for constant second Coriolis coeff (default=0).
97    o pkg/seaice/seaice_growth.F:
98        a few cosmetic changes that reduce the number of lines of code
99    o pkg/obcs: add boundary conditions following Stevens (1990)
100      - the code follows old MOM/NAOSIM code
101      - so far it is only implemented for the eastern and western boundaries
102        and NOT for pTracers
103    o pkg/rbcs:
104      - replace rbcsInIter by rbcsForcingOffset, the time in seconds at the
105        beginning of the first rbcs forcing period.
106      - add option rbcsSingleTimeFiles that makes rbcs read forcing data like the
107        offline package, i.e., one file per time, labeled by iteration number;
108        deltaTrbcs sets the timestep with which the data was generated;
109        rbcsIter0 is the forcing iteration corresponding to rbcsForcingOffset.
110      - rbcsForcingCycle=0 makes forcing non-cyclic.
111      - make arithmetic safe for negative times and odd forcing periods.
112    
113    checkpoint62n (2010/11/09)
114    o pkg/seaice:
115        fix masking in free-drift S/R ; update results of exp. lab_sea.fd
116    o pkg/obcs:
117       New S/R to copy tracer value from the OB location to narrow band region
118        (width = same as overlap) beyond the OB: preserve OB value (needed for
119        high-order scheme) which were overwritten by EXCH call if in overlap
120        region. Applied to theta, salt, ptracer and advected seaice variables.
121       With seaice: use maskInC in similar way as in gad_advection.F,
122        in seaice_advection.F and advect.F.
123       Update output of experiment seaice_obcs and change exp4 to test OBCS with
124        4th order Adv.Scheme. for pasive salt and ptracer.
125    o tools/genmake2:
126      - when looking for an optfile (not specified), only search for Fortran compiler
127        (remove sym-link test + setting of CPP + makedepend check + C-compiler check)
128      - in get_fortran_c_namemangling: use "$CC $CFLAG" to compile C test programm
129        (instead of "$MAKE genmake_test.o" since an existing Makefile can be wrong)
130      - set default for CPP to "cpp -traditional -P" (was the case without specifying
131        an optfile, but otherwise default was just "cpp".
132      - comment out PLATFORM=$p_PLATFORM (no idea where p_PLATFORM comes from)
133      - when "CC" is not set in the optfile, look for possible C compiler
134        (instead of just setting CC=cc)
135      - put back version v.169 modif (from 2008/02/15), was dropped in v.173 changes:
136        => add a ".F" to ".o" rule for source files with no "#include" (such as
137           port_rand.F); otherwise, default ignores FOPTIM and just uses FFLAGS.
138      - move gfortran before g77 in list of possible Fortran compiler (consistent
139        with reference compiler switch from g77 to gfortran)
140    o pkg/seaice:
141      o remove SEAICE_OLD_AND_BAD_DISCRETIZATION-code, add a test to
142        seaice_check that stops the model, when the CPP flag is used.
143      o seaice_growth.F: make capping of ice volume conserving by returning the
144        capped ice as freshwater to EmPmR. This does not change the verification
145        experiments but will change runs where the capping is acutally active
146    o change reference platform+compiler from faulks+g77 to baudelaire+gfortran
147      (except the 2 fizhi test exp.); update output of exp.: bottom_ctrl_5x5,
148         global_ocean.cs32x15 (icedyn, thsice, AD thsice), global_ocean_ebm (AD),
149         lab_sea (fd, hb87, salt_plume), MLAdjust (3/5) and vermix (dd)
150    o tools/genmake2:
151      - merge genmake_warnings & genmake_errors into 1 log file: "genmake.log")
152      - change DUMPSTATE default to false (can use "-ds" option to switch it to T)
153      - clean previous genmake log files before anything else.
154      - change Makefile to remove testreport log files (*.tr_log) and genmake log
155        files only with "CLEAN" target (instead of "Clean");
156    o pkg/generic_advdiff:
157      Change OBCS in multiDim advection (gad_advection.F):
158       Use maskInC to prevent intermediate update of tracer-field in OB regions,
159       thus keeping current-time-step OB values; and remove the call to OBCS_APPLY
160       which were applying future time-step OB values.
161      This way, all explicit calculations use current-time-step OB values
162       (simpler and more consistent).
163      Affects results when set-up uses time-varying OBC and multi-dim advection;
164       update output of experiment seaice_obcs.
165    o pkg/seaice:
166      move OPTIONS (formerly locally defined) to SEAICE_OPTIONS.h:
167       this includes SEAICE_GROWTH_LEGACY (+ SEAICE_DO_OPEN_WATER_GROWTH &
168         SEAICE_OCN_MELT_ACT_ON_AREA ) and SEAICE_SOLVE4TEMP_LEGACY.
169      Default (pkg/seaice/SEAICE_OPTIONS.h) is to define SEAICE_SOLVE4TEMP_LEGACY
170       but leave SEAICE_GROWTH_LEGACY undef ; For now, keep verification exp
171       unchanged (SEAICE_GROWTH_LEGACY defined in */code*/SEAICE_OPTIONS.h)
172    o pkg aim (2010/10/26):
173      - Introduce ALLOW_INSOLATION, moving toward a more general incoming solar radiation
174        formulation with obliquity, eccentricity, ... as run-time parameters,
175      - Introduce diagnostics for top-of-the-atmaophere incoming solar radiation and
176        upward shortwave radition at the surface (all-sky and clear-sky).
177    o pkg/obcs:
178      - writing sections with globalFiles=T does not work: switch to tiled-files
179        when writing sections for OBCS (change pkg/rw/write_rec.F accordingly).
180      - fix index bug (OB_Ie -> OB_Iw_) in obcs_apply_uvice.F
181      - apply OBCS_SEAICE_COMPUTE_UVICE to both uice and vice at all obcs
182    
183    checkpoint62m (2010/10/21)
184    o pkg/seaice: vectorize seaice_solve4temp.F
185      - move iterations loops outside of i/j-loops
186      - requires 2D arrays for TB and effConduct
187      - add 2D iceOrNot to replace HICE_ACTUAL.GT.0, as HICE_ACTUAL is
188        modified in this routine
189      - a little bit of clean up, adjusting indentation, etc.
190      - replaced a few TEN**a by exp(a*log(10.)) in new code for better
191        performance and '**TWO' by '**2' (because TWO is a float),
192        replaced ONE, ZERO
193    o eesupp/src:
194       fix flow dir for exch1_z_RX_cube, exch1_uv_RX_cube & exch1_bg_RX_cube
195    o pkg/seaice/seaice_growth.F
196      Revision 1.89 of seaice_growth.F completes the overall october 2010 revision and
197      merging process. The merged routine has two branches, and one activates the 'evolution'
198      branch by setting SEAICE_GROWTH_LEGACY to undef (at the top of the routine for now).
199      In summary, here is what the '10/10 revision' did consist of
200        part 1: seaice_growth.F revisions 1.71 to 1.75
201          - Preliminary seaice_growth.F clean-up, keeping test results strictly unchanged.
202            The emphasis here was on improving readability (e.g. by trying to use meaningful
203            variable names) and modularity (e.g. by adding arrays to store heff etc. updates).
204        part 1.5:
205          - revising the lab_sea experiment to make it a more useful (i.e. stable
206            and representative of an actual model run). This was done by generating a
207            (winter) pickup to start from, switching back the main experiment dynamic
208            solver from evp to lsr, having one of the experiments use the free drift solution.
209        part 2: seaice_growth.F revisions 1.76 to 1.85
210          - Sorting out hard-coded constants that prevented heat and fresh water conservation.
211          - Sorting out the various fields units and sign (set early on and reset at the end)
212            to avoid numerous scalings/re-scalings. By v1.85 the basic unit for ice, heat and
213            fresh water stock is 'effective ice meters', and >0 implies more ice/snow.
214          - Using tendency terms arrays (d_HEFF* etc.) to alleviate remaining code locks,
215            and simplifying logical expressions to further improve readibility.
216        part 3: seaice_growth.F revisions 1.86 to 1.89
217          - Re-organize the blocks of code more logically.
218          - Merging the '_if.F' pieces that add something new.
219    o pkg/thsice:
220      - vectorize thsice_solve4temp and thsice_get_exf.
221        Problem: thsice_solve4temp has an unvectorizable statement that
222        might also be problematic for TAF
223      - thsice_get_exf: add the ALLOW_BULK_LARGEYEAGER04 CPP-flag. This
224        does not change the verifcation experiment, but will change all
225        experiments that have this flag undefined (not tested in verification);
226        a little reorganization to save a few 2D fields and recomputations
227      - 1st step of revisiting thsice adjoint (major recomp. sorted out)
228      - 2nd step:  fix some store dirs
229        o seems to work somewhat, i.e. using ifort but not g77
230        o likely cause are incomplete init. or recomputation
231        o start verification/global_ocean.cs32x15/input_ad.thsice
232    o pkg/obcs: add support for exch2
233      - the position of the boundary and prescribed values are specified using
234        a global domain with exch2 facets stacked
235        - in x for N,S boundaries (like W2_mapIO=-1)
236        - in y for E,W boundaries (so E,W boundaries do not overlap)
237    o pkg/mdsio: add support for writing global sections with exch2
238        file layout is as for obcs described above:
239        - for x-z sections, facets are stacked in x (like W2_mapIO=-1)
240        - for y-z sections, facets are stacked in y
241    o pkg/thsice:
242       - change a few routines for better vectorization: thsice_albedo.F,
243         thsice_step_temp.F, and in thsice_calc_thickn.F. Results are
244         not affected, but in particular the latter routine has changed
245         dramatically (not necessarily easier to read now).
246       - re-arrange calculation in THSICE_SOLVE4TEMP: move outside of i,j loops
247       iteration loop and call to S/R THSICE_GET_BULKF & THSICE_GET_EXF.
248    o verification/lab_sea:
249      - overhaul of the forward model experiments. The main motivation
250        for this revision is that lab_sea has proven quite fragile (when
251        changing the sea-ice code, and switching platforms) to a point
252        when failures were very hard to attribute to specific code problems.
253      - the suspected reason for this fragility is noise amplification by evp so,
254        to start with, we decided to replace evp with lsr in the main experiment.
255      - the input.lsr experiment thus became obsolete and was removed.
256      - it was replaced with the input.fd experiment that uses an
257        analytical "free drift" solution as the ice velocity field.
258      - Taken together, input (lsr), input.fd (free drift) and input.hb87 (evp)
259        will hopefully allow us to discriminate problems due to dynamic solvers
260        from problems due to the thermodynamic code. input.salt_plume (lsr) allows
261        us to test additional options, along with the salt plume package.
262      - Finally a pickup was generated (at the end of a one year run) to
263        make the tests more representative of an actual model run. Previously
264        the tests starting point was a 1m thickness of ice everywhere.
265    o pkg/seaice:
266      - introducing S\R seaice_freedrift.F that compute the
267        analytical solution to an approximate ice momentum
268        equation (i.e. the simple stress/coriolis balance).
269      - define SEAICE_ALLOW_FREEDRIFT to trigger the computation
270        of the free drift velocity field, and enable its use.
271        To actually use the free drift solution as the model ice
272        velocity field set SEAICEuseFREEDRIFT to .TRUE. in data.seaice.
273    o move "useOASIS" from PARAMS.h to EEPARAMS.h and read it from "eedata"
274    
275    checkpoint62l (2010/10/04)
276    o pkg/seaice:
277      -fix the USE_ORIGINAL_SBI version (for variable freezing point);
278      -use "celsius2K" in SEAICE_VARIABLE_FREEZING_POINT and in new
279       version (with USE_ORIGINAL_SBI undef);
280    o add hooks for new packages OASIS, the package will follow
281      (hooks exclude the seaice pkg for now)
282    o pkg/autodiff: ALLOW_AUTODIFF_WHTAPEIO
283      Option to use mdsio_read_whalos.F/mdsio_write_whalos.F,
284      rather than mdsio_readvector.F/mdsio_writevector.F, within
285      adread_adwrite.F to read/write adjoint-related tapes to disk.
286    o eesupp and pkg/mdsio: ALLOW_WHIO
287      Option to write/read 2D fields to files including tiles halos.
288      The main purpose is for adjoint related "tape I/O".
289      The secondary purpose is for debugging phases.
290      A word on those rather specifically intended purposes.
291      The code was meant to be stripped down to the bare minimum.
292      Typically, there is a unique and basic mapping to the global
293      buffer (tile by tile, then proc by proc, then level by level), and
294      byteswaps and meta-files are omitted. Indeed the (*_WH*) code is not
295      meant to generate user friendly outputs of various shapes and forms.
296      Rather it is intended, for the knowledgeabale developers,
297      to be largely independent of the many mdsio options, to allow
298      outputs of tiles+halos in debugging phases and in adjoint runs,
299      and to allow some flexibility in tuning (adoint) I/O depending on each
300      file system behavior. With regard to tuning, most of the potential knobs
301      (to leave files open, to allocate the I/O indep. of usesinglecpuio,
302      to specify directories, to specify the typical size of I/O calls, etc.)
303      are not yet included, and will be added if they prove useful.
304  o pkg/seaice:  o pkg/seaice:
305     fix uninitialised arrays in USE_ORIGINAL_SBI version of seaice_solve4temp.F     fix uninitialised arrays in USE_ORIGINAL_SBI version of seaice_solve4temp.F
306  o pkg/seaice:  o pkg/seaice:
# Line 293  o tools/build_options: Line 590  o tools/build_options:
590      but keep the former optfile for few weeks for smooth transition      but keep the former optfile for few weeks for smooth transition
591  o pkg/ecco  o pkg/ecco
592    - allow user defined cost function contributions    - allow user defined cost function contributions
593          CPP: ALLOW_USERCOST_CONTRIBUTION       CPP: ALLOW_USERCOST_CONTRIBUTION
594          USAGE: compute contributions in cost_usercost_all.F       USAGE: compute contributions in cost_usercost_all.F
595    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.
596        the two options are complementary.        the two options are complementary.
597  o pkg/smooth  o pkg/smooth

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