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revision 1.1302 by gforget, Fri Sep 24 18:40:15 2010 UTC revision 1.1348 by jmc, Tue Dec 14 19:13:22 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 eesup and pkg/mdsio: ALLOW_WHIO  o pkg/seaice: add diagnostics for snow precipitation
8    o eesupp/src:
9      new S/R with new option (NML_EXTENDED_F77) to change array specification
10      from F95 standard to commonly accepted extended F77 form.
11      This would allow to use F95 syntax in namelist (needed with gfortran 4.4.5)
12      and to revert back to the original syntax (with -DNML_EXTENDED_F77)
13      for less tolerant f77 compiler (e.g., pgf77, g77).
14    o globalFiles:
15      commented out in parameter file "data" since it's not safe with MPI
16      (e.g., wrong on aces); keep it if useSingleCpuIO=T (but not doing much
17      in this case); no longer commented out in restart test (tst_2+2).
18    o add adTapeDir to specify a special directory where adjoint tapes are
19      written/read (adread_adwrite.F). adTapeDir is specified in data/PARM05
20      and cannot be used together with mdsioLocalDir.
21    o nesting pkgs:
22      - packages_init_variables : put call to OBCS_INIT_VARIABLES in last position
23      - update Gianmaria's Nesting pkgs (from Contrib/nesting_sannino)
24      - add parameter files + utils dir + output from short run on beagle.
25    o pkg/seaice:
26        fix seaice_growth.F store directives; update results of exp. lab_sea.ad
27    o pkg/seaice: explicitly store tsurfloc in seaice_solve4temp.F to avoid
28      unnecessary copying in adjoint code, requires new parameter NMAX_ITER
29    
30    Option to write/read 2D fields to files including tiles halos.  checkpoint62o (2010/11/25)
31    The main purpose is for adjoint related "tape I/O".  o pkg/exf:
32    The secondary purpose is for debugging phases.    - change CPP option EXF_VERBOSE to run-time logical param exf_verbose.
33    o pkg/seaice:
34      - seaice_ocean_stress: split a loop for better vectorization of the
35        adjoint code
36      - seaice_growth.F: fix bug in conservation of freshwater connected to
37        capping of heff, put contribution into d_HEFFbyNEG
38      - replace irritating parameters SEAICE_latentWater/Ice and SEAICE_sensHeat
39        by something more sensible (parameters that are what their name implies)
40      - change some defaults, so that by default exf-parameters are used for
41        things like rhoAir, cpAir,latent/sensible heat parameters, in order
42        to reproduce the old results, many data.seaice now contain funny values
43        for cpAir and latent heat of sublimation
44    o packages_readparms.F: move exf_readparms up in line so that
45        exf-parameters are visible for other packages (e.g. seaice)
46    o debugMode & debugLevel=2:
47      - differentiate between debugMode & debugLevel=2:
48        debugMode: controls printing of debug messages (sequence of S/R calls).
49        debugLevel: controls printing of algorithm intermediate results and stats.
50      - remove "if debugLevel=2 => debugMode" but keep "debugMode =>  debugLevel=2";
51        => allows to print debug-stats without all sequence of call messages.
52      - switch control of debug print from debugLevel to debugMode in many S/R.
53    o pkg/obcs (obcs-sponge):
54        fix bug that was introduced on Oct 25 (in dynamics.F v1.151): put back the
55        call to OBCS_PRESCRIBE_EXCHANGES (need to exch gU,gV when using obcs-sponge)
56    o pkg/generic_advdiff:
57      - record overlap minimum size for each advection scheme;
58      - refine criteria on overlap minimum size;
59      - check and stop (in gad_check) if overlap size is too small.
60    o pkg/obcs:
61      - with ptracers: remove multiple calls to obcs_apply_ptracer (only done
62        once, in ptracers_implicit.F)
63      - with seaice: remove test on empty file name in obcs_apply_seaice (always
64        apply OB values when tile has OB)
65    o model/src, coriolis setting:
66      - integer parameter "selectCoriMap" (=0,1,2) replaces 3 logical
67        useConstantF, useBetaPlaneF, useSphereF ; can now read coriolis from
68        files (selectCoriMap=3) with any grid.
69      - add parameter "fPrime" for constant second Coriolis coeff (default=0).
70    o pkg/seaice/seaice_growth.F:
71        a few cosmetic changes that reduce the number of lines of code
72    o pkg/obcs: add boundary conditions following Stevens (1990)
73      - the code follows old MOM/NAOSIM code
74      - so far it is only implemented for the eastern and western boundaries
75        and NOT for pTracers
76    o pkg/rbcs:
77      - replace rbcsInIter by rbcsForcingOffset, the time in seconds at the
78        beginning of the first rbcs forcing period.
79      - add option rbcsSingleTimeFiles that makes rbcs read forcing data like the
80        offline package, i.e., one file per time, labeled by iteration number;
81        deltaTrbcs sets the timestep with which the data was generated;
82        rbcsIter0 is the forcing iteration corresponding to rbcsForcingOffset.
83      - rbcsForcingCycle=0 makes forcing non-cyclic.
84      - make arithmetic safe for negative times and odd forcing periods.
85    
86    checkpoint62n (2010/11/09)
87    o pkg/seaice:
88        fix masking in free-drift S/R ; update results of exp. lab_sea.fd
89    o pkg/obcs:
90       New S/R to copy tracer value from the OB location to narrow band region
91        (width = same as overlap) beyond the OB: preserve OB value (needed for
92        high-order scheme) which were overwritten by EXCH call if in overlap
93        region. Applied to theta, salt, ptracer and advected seaice variables.
94       With seaice: use maskInC in similar way as in gad_advection.F,
95        in seaice_advection.F and advect.F.
96       Update output of experiment seaice_obcs and change exp4 to test OBCS with
97        4th order Adv.Scheme. for pasive salt and ptracer.
98    o tools/genmake2:
99      - when looking for an optfile (not specified), only search for Fortran compiler
100        (remove sym-link test + setting of CPP + makedepend check + C-compiler check)
101      - in get_fortran_c_namemangling: use "$CC $CFLAG" to compile C test programm
102        (instead of "$MAKE genmake_test.o" since an existing Makefile can be wrong)
103      - set default for CPP to "cpp -traditional -P" (was the case without specifying
104        an optfile, but otherwise default was just "cpp".
105      - comment out PLATFORM=$p_PLATFORM (no idea where p_PLATFORM comes from)
106      - when "CC" is not set in the optfile, look for possible C compiler
107        (instead of just setting CC=cc)
108      - put back version v.169 modif (from 2008/02/15), was dropped in v.173 changes:
109        => add a ".F" to ".o" rule for source files with no "#include" (such as
110           port_rand.F); otherwise, default ignores FOPTIM and just uses FFLAGS.
111      - move gfortran before g77 in list of possible Fortran compiler (consistent
112        with reference compiler switch from g77 to gfortran)
113    o pkg/seaice:
114      o remove SEAICE_OLD_AND_BAD_DISCRETIZATION-code, add a test to
115        seaice_check that stops the model, when the CPP flag is used.
116      o seaice_growth.F: make capping of ice volume conserving by returning the
117        capped ice as freshwater to EmPmR. This does not change the verification
118        experiments but will change runs where the capping is acutally active
119    o change reference platform+compiler from faulks+g77 to baudelaire+gfortran
120      (except the 2 fizhi test exp.); update output of exp.: bottom_ctrl_5x5,
121         global_ocean.cs32x15 (icedyn, thsice, AD thsice), global_ocean_ebm (AD),
122         lab_sea (fd, hb87, salt_plume), MLAdjust (3/5) and vermix (dd)
123    o tools/genmake2:
124      - merge genmake_warnings & genmake_errors into 1 log file: "genmake.log")
125      - change DUMPSTATE default to false (can use "-ds" option to switch it to T)
126      - clean previous genmake log files before anything else.
127      - change Makefile to remove testreport log files (*.tr_log) and genmake log
128        files only with "CLEAN" target (instead of "Clean");
129    o pkg/generic_advdiff:
130      Change OBCS in multiDim advection (gad_advection.F):
131       Use maskInC to prevent intermediate update of tracer-field in OB regions,
132       thus keeping current-time-step OB values; and remove the call to OBCS_APPLY
133       which were applying future time-step OB values.
134      This way, all explicit calculations use current-time-step OB values
135       (simpler and more consistent).
136      Affects results when set-up uses time-varying OBC and multi-dim advection;
137       update output of experiment seaice_obcs.
138    o pkg/seaice:
139      move OPTIONS (formerly locally defined) to SEAICE_OPTIONS.h:
140       this includes SEAICE_GROWTH_LEGACY (+ SEAICE_DO_OPEN_WATER_GROWTH &
141         SEAICE_OCN_MELT_ACT_ON_AREA ) and SEAICE_SOLVE4TEMP_LEGACY.
142      Default (pkg/seaice/SEAICE_OPTIONS.h) is to define SEAICE_SOLVE4TEMP_LEGACY
143       but leave SEAICE_GROWTH_LEGACY undef ; For now, keep verification exp
144       unchanged (SEAICE_GROWTH_LEGACY defined in */code*/SEAICE_OPTIONS.h)
145    o pkg aim (2010/10/26):
146      - Introduce ALLOW_INSOLATION, moving toward a more general incoming solar radiation
147        formulation with obliquity, eccentricity, ... as run-time parameters,
148      - Introduce diagnostics for top-of-the-atmaophere incoming solar radiation and
149        upward shortwave radition at the surface (all-sky and clear-sky).
150    o pkg/obcs:
151      - writing sections with globalFiles=T does not work: switch to tiled-files
152        when writing sections for OBCS (change pkg/rw/write_rec.F accordingly).
153      - fix index bug (OB_Ie -> OB_Iw_) in obcs_apply_uvice.F
154      - apply OBCS_SEAICE_COMPUTE_UVICE to both uice and vice at all obcs
155    
156    checkpoint62m (2010/10/21)
157    o pkg/seaice: vectorize seaice_solve4temp.F
158      - move iterations loops outside of i/j-loops
159      - requires 2D arrays for TB and effConduct
160      - add 2D iceOrNot to replace HICE_ACTUAL.GT.0, as HICE_ACTUAL is
161        modified in this routine
162      - a little bit of clean up, adjusting indentation, etc.
163      - replaced a few TEN**a by exp(a*log(10.)) in new code for better
164        performance and '**TWO' by '**2' (because TWO is a float),
165        replaced ONE, ZERO
166    o eesupp/src:
167       fix flow dir for exch1_z_RX_cube, exch1_uv_RX_cube & exch1_bg_RX_cube
168    o pkg/seaice/seaice_growth.F
169      Revision 1.89 of seaice_growth.F completes the overall october 2010 revision and
170      merging process. The merged routine has two branches, and one activates the 'evolution'
171      branch by setting SEAICE_GROWTH_LEGACY to undef (at the top of the routine for now).
172      In summary, here is what the '10/10 revision' did consist of
173        part 1: seaice_growth.F revisions 1.71 to 1.75
174          - Preliminary seaice_growth.F clean-up, keeping test results strictly unchanged.
175            The emphasis here was on improving readability (e.g. by trying to use meaningful
176            variable names) and modularity (e.g. by adding arrays to store heff etc. updates).
177        part 1.5:
178          - revising the lab_sea experiment to make it a more useful (i.e. stable
179            and representative of an actual model run). This was done by generating a
180            (winter) pickup to start from, switching back the main experiment dynamic
181            solver from evp to lsr, having one of the experiments use the free drift solution.
182        part 2: seaice_growth.F revisions 1.76 to 1.85
183          - Sorting out hard-coded constants that prevented heat and fresh water conservation.
184          - Sorting out the various fields units and sign (set early on and reset at the end)
185            to avoid numerous scalings/re-scalings. By v1.85 the basic unit for ice, heat and
186            fresh water stock is 'effective ice meters', and >0 implies more ice/snow.
187          - Using tendency terms arrays (d_HEFF* etc.) to alleviate remaining code locks,
188            and simplifying logical expressions to further improve readibility.
189        part 3: seaice_growth.F revisions 1.86 to 1.89
190          - Re-organize the blocks of code more logically.
191          - Merging the '_if.F' pieces that add something new.
192    o pkg/thsice:
193      - vectorize thsice_solve4temp and thsice_get_exf.
194        Problem: thsice_solve4temp has an unvectorizable statement that
195        might also be problematic for TAF
196      - thsice_get_exf: add the ALLOW_BULK_LARGEYEAGER04 CPP-flag. This
197        does not change the verifcation experiment, but will change all
198        experiments that have this flag undefined (not tested in verification);
199        a little reorganization to save a few 2D fields and recomputations
200      - 1st step of revisiting thsice adjoint (major recomp. sorted out)
201      - 2nd step:  fix some store dirs
202        o seems to work somewhat, i.e. using ifort but not g77
203        o likely cause are incomplete init. or recomputation
204        o start verification/global_ocean.cs32x15/input_ad.thsice
205    o pkg/obcs: add support for exch2
206      - the position of the boundary and prescribed values are specified using
207        a global domain with exch2 facets stacked
208        - in x for N,S boundaries (like W2_mapIO=-1)
209        - in y for E,W boundaries (so E,W boundaries do not overlap)
210    o pkg/mdsio: add support for writing global sections with exch2
211        file layout is as for obcs described above:
212        - for x-z sections, facets are stacked in x (like W2_mapIO=-1)
213        - for y-z sections, facets are stacked in y
214    o pkg/thsice:
215       - change a few routines for better vectorization: thsice_albedo.F,
216         thsice_step_temp.F, and in thsice_calc_thickn.F. Results are
217         not affected, but in particular the latter routine has changed
218         dramatically (not necessarily easier to read now).
219       - re-arrange calculation in THSICE_SOLVE4TEMP: move outside of i,j loops
220       iteration loop and call to S/R THSICE_GET_BULKF & THSICE_GET_EXF.
221    o verification/lab_sea:
222      - overhaul of the forward model experiments. The main motivation
223        for this revision is that lab_sea has proven quite fragile (when
224        changing the sea-ice code, and switching platforms) to a point
225        when failures were very hard to attribute to specific code problems.
226      - the suspected reason for this fragility is noise amplification by evp so,
227        to start with, we decided to replace evp with lsr in the main experiment.
228      - the input.lsr experiment thus became obsolete and was removed.
229      - it was replaced with the input.fd experiment that uses an
230        analytical "free drift" solution as the ice velocity field.
231      - Taken together, input (lsr), input.fd (free drift) and input.hb87 (evp)
232        will hopefully allow us to discriminate problems due to dynamic solvers
233        from problems due to the thermodynamic code. input.salt_plume (lsr) allows
234        us to test additional options, along with the salt plume package.
235      - Finally a pickup was generated (at the end of a one year run) to
236        make the tests more representative of an actual model run. Previously
237        the tests starting point was a 1m thickness of ice everywhere.
238    o pkg/seaice:
239      - introducing S\R seaice_freedrift.F that compute the
240        analytical solution to an approximate ice momentum
241        equation (i.e. the simple stress/coriolis balance).
242      - define SEAICE_ALLOW_FREEDRIFT to trigger the computation
243        of the free drift velocity field, and enable its use.
244        To actually use the free drift solution as the model ice
245        velocity field set SEAICEuseFREEDRIFT to .TRUE. in data.seaice.
246    o move "useOASIS" from PARAMS.h to EEPARAMS.h and read it from "eedata"
247    
248    checkpoint62l (2010/10/04)
249    o pkg/seaice:
250      -fix the USE_ORIGINAL_SBI version (for variable freezing point);
251      -use "celsius2K" in SEAICE_VARIABLE_FREEZING_POINT and in new
252       version (with USE_ORIGINAL_SBI undef);
253    o add hooks for new packages OASIS, the package will follow
254      (hooks exclude the seaice pkg for now)
255    o pkg/autodiff: ALLOW_AUTODIFF_WHTAPEIO
256      Option to use mdsio_read_whalos.F/mdsio_write_whalos.F,
257      rather than mdsio_readvector.F/mdsio_writevector.F, within
258      adread_adwrite.F to read/write adjoint-related tapes to disk.
259    o eesupp and pkg/mdsio: ALLOW_WHIO
260      Option to write/read 2D fields to files including tiles halos.
261      The main purpose is for adjoint related "tape I/O".
262      The secondary purpose is for debugging phases.
263    A word on those rather specifically intended purposes.    A word on those rather specifically intended purposes.
264    The code was meant to be stripped down to the bare minimum.    The code was meant to be stripped down to the bare minimum.
265    Typically, there is a unique and basic mapping to the global    Typically, there is a unique and basic mapping to the global
266    buffer (tile by tile, then proc by proc, then level by level), and    buffer (tile by tile, then proc by proc, then level by level), and
267    byteswaps and meta-files are omitted. Indeed the (*_WH*) code is not    byteswaps and meta-files are omitted. Indeed the (*_WH*) code is not
268    meant to generate user friendly outputs of various shapes and forms.    meant to generate user friendly outputs of various shapes and forms.
269    Rather it is intended, for the knowledgeabale developers,    Rather it is intended, for the knowledgeabale developers,
270    to be largely independent of the many mdsio options, to allow    to be largely independent of the many mdsio options, to allow
271    outputs of tiles+halos in debugging phases and in adjoint runs,    outputs of tiles+halos in debugging phases and in adjoint runs,
272    and to allow some flexibility in tuning (adoint) I/O depending on each    and to allow some flexibility in tuning (adoint) I/O depending on each
273    file system behavior. With regard to tuning, most of the potential knobs    file system behavior. With regard to tuning, most of the potential knobs
274    (to leave files open, to allocate the I/O indep. of usesinglecpuio,    (to leave files open, to allocate the I/O indep. of usesinglecpuio,
275    to specify directories, to specify the typical size of I/O calls, etc.)    to specify directories, to specify the typical size of I/O calls, etc.)
276    are not yet included, and will be added if they prove useful.    are not yet included, and will be added if they prove useful.
# Line 313  o tools/build_options: Line 563  o tools/build_options:
563      but keep the former optfile for few weeks for smooth transition      but keep the former optfile for few weeks for smooth transition
564  o pkg/ecco  o pkg/ecco
565    - allow user defined cost function contributions    - allow user defined cost function contributions
566          CPP: ALLOW_USERCOST_CONTRIBUTION       CPP: ALLOW_USERCOST_CONTRIBUTION
567          USAGE: compute contributions in cost_usercost_all.F       USAGE: compute contributions in cost_usercost_all.F
568    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.
569        the two options are complementary.        the two options are complementary.
570  o pkg/smooth  o pkg/smooth

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