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revision 1.1817 by jmc, Sun Feb 3 23:40:11 2013 UTC revision 1.1859 by dimitri, Tue Apr 23 19:05:16 2013 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/exf ALLOW_RUNOFTEMP
8      - if defined,  river and glacier runoff temperature can be read-in from
9        runoftempfile; runoftempfile needs to have same format as runofffile
10    o pkg/thsice (& pkg/bulk_force):
11      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
12        for energy content of Precip + RunOff & Evap (like with pkg/exf).
13      - change computation domain to always be the interior (without overlap).
14      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
15    o verification/tutorial_global_oce_biogeo:
16      - add preliminary OpenAD setup (still has problems)
17    o model/src:
18      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
19      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
20      - move forcing adjustment (balancing surface forcing) in specific S/R
21        where might also be applied exchanges (if needed) to forcing arrays.
22    o pkg/shelfice:
23      - allow to specify the Ice-Shelf mass per unit area (instead of
24        shelficeLoadAnomaly) and do the conversion from one to the other
25      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
26        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
27        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
28        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
29      - update isomip experiment forward output (get machine truncation error
30        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
31    o verification/offline_exf_seaice:
32      revise data.seaice in input.thermo and input_ad and update results accordingly
33        HO = 0.2, SEAICE_areaLossFormula = 2,
34        SEAICE_growMeltByConv = .TRUE.,
35        SEAICE_doOpenWaterMelt = .TRUE.,
36      Improve consistency with input.thsice and fix the spurious 500m ice corners
37    o verification/global_ocean.cs32x15:
38      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
39        in icedyn (thsice+seaice-dyn) test and update output.
40    o verification/offline_exf_seaice:
41      - adjust list of tested variables (with testreport) and update
42        standard test output with better slection of monitored fields.
43    o pkg/cd_code:
44      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
45        experiment lab_sea.hb87
46    o tools/genmake2:
47      - change default makedepend from the system default to tools/xmakedepend:
48        When no makedepend is specified, select tools/xmakedepend it the test pass,
49        otherwise select the system default (if exist and pass the test) or
50        try to build cyrus-makedepend ; stop if none of the 3 works.
51    o pkg/exf & pkg/thsice:
52      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
53        for energy content of Precip + RunOff & Evap. Assumes:
54       1) Rain has same temp as Air.
55       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
56       3) Run-Off comes at the temp of surface water (with same Cp)
57       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
58        put directly into Latent Heat flux & should use water-vapor heat capacity.
59       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
60        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
61    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
62        (compile when SEAICE_ALLOW_JFNK is defined)
63    o pkg/thsice:
64      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
65        implementation): move THSICE_AVE call after the advection (called directly
66        from thsice_do_advect.F).
67    o verification/global_ocean.90x40x15 and OpenAD:
68      New experiment for OpenAD is identical to the one in input_ad except that
69        multiDimAdvection=.FALSE.,
70      There is still an issue with this.
71    o pkg/thsice:
72      - account for ice velocity (ocean relative velocity) in turbulent heat flux
73        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
74        and offline_exf_seaice (main test).
75    
76    checkpoint64f (2013/03/31)
77    o verification/OpenAD:
78      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
79    o verification/isomip, pkg/shelfice and OpenAD:
80      - add OpenAD setup to this exp and make shelfice package work with OpenAD
81    o verification/tutorial_global_oce_biogeo:
82      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
83    o verification/offline_exf_seaice:
84      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
85    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
86      - add OpenAD setup to this exp and make ptracers package work with OpenAD
87    o pkg/seaice/seaice_evp.F:
88       mask the asymmetric contribution of the ice-ocean stress (when
89       the turningAngle is non-zero) over open water to avoid stripes
90       in the EVP-solutions after many EVP-substeps. This does not change
91       the verification experiment (because turningAngle=0 in that experiment),
92       but will affect other EVP solutions with turningAngle.ne.0
93    o verification, AD & TLM output:
94      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
95        additions and multiplications which affect results at machine truncation
96        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
97        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
98        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
99        digits of matching.
100    o pkg/seaice:
101       modify lsr-algorithm so that it vectorizes AND converges by using a
102       "zebra" method: split vector loop into two with step size 2; this
103       solves a general convergence problem for the JFNK solver on a vector
104       computer. It has the potential to even improve convergence for
105       non-vector machines, but it does change the results so it is turned
106       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
107       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
108    
109    checkpoint64e (2013/03/05)
110    o pkg/ecco and several verification experiments:
111       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
112       from ecco package, and revert to unified routine in model/src/
113       Adjust verification experiments accordingly, especially gloal_oce_llc90
114       Should conclude long-standing work by Gael to reconsile the_main_loop with
115       ECCO and will enable OpenAD's revolve loop in ECCO setup.
116    o pkg/generic_advdiff:
117      - implement compressible flow method for multi-dim advection (similar to
118        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
119        TAF generates many recomputations) to use it; no yet coded with implicit
120        vertical advection.
121      - change experiment advect_cs (new output) and advect_xy (same output)
122        to test compressible flow multi-dim advection.
123    o pkg/generic_advdiff:
124      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
125        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
126    o pkg/seaice:
127      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
128        bug affects two verification experiments (lab_sea and lab_sea.hb87),
129        recover old (wrong) results by setting noSlipFac = 2. in
130        seaice_calc_strainrates.F;
131      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
132      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
133        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
134      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
135    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
136      - new subroutines seaice_lsr_tridiagu/v
137      - introduce loop bounds i/jmin/max to be able to use a restricted
138        additive Schwarz method, but not used for now.
139      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
140      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
141    o OpenAD support
142       Reorganize S/R call for overall time-stepping loop to facilitate
143       OpenAD revolve loop replacement
144       (new S/R main_do_loop.F)
145    o model/src:
146      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
147      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
148        ADAMS_BASHFORTH2.
149    o pkg/cheapaml:
150      - add new parameter (default=F, same as before) to disable full domain
151        (including land) periodicity in X & Y dir.
152      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
153        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
154        into single S/R CHEAPAML_TIMESTEP.
155    
156    checkpoint64d (2013/02/17)
157    o pkg/monitor (angular momentum):
158      - do not add Eta contribution to the total AM if using rigid-lid;
159      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
160      - horizontal discretisation: compute Zonal wind contribution separately for
161        each component (instead of from cell centered averaged) and use the 4
162        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
163      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
164        FreeSurf) if using vectorInvariant momentum.
165    o model/src (horizontal grid):
166      - move initialisation of all horizontal grid arrays to null value
167        from specific horizontal grid S/R to main S/R INI_GRID;
168      - add 2 new arrays to project model C-grid velocity on to zonal direction
169        (similar to AngleCosC & -AngleSinC but at U and V point location) and
170        compute them in S/R CALC_GRID_ANGLES.
171    o pkg/seaice: replace a hard coded parameter by a runtime parameter
172        SEAICE_JFNK_tolIter
173    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
174        preconditioner for JFNK (run LSR into the overlaps as far as possible,
175        i.e OLx/y-2, but overwrite the solution in the overlaps)
176      - extend loop range in seaice_calc_viscosity
177      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
178      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
179      - slightly modify loops in tridiagonal solver lsr-preconditioner
180      - by default remove the extra exchange in seaice_preconditioner with a
181        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
182      - modify offline_exf_seaice so that old results without RAS are reproduced
183        for output.dyn_jfnk.txt
184      in seaice_fgmres.F (unrelated to RAS)
185      - add a cpp-flag option for a re-ordered mapping (potentially more
186        efficient), but because this changes the results, turn it off by
187        default
188      - replace the save statement by local common blocks
189    o utils/matlab:
190      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
191      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
192        instead of local script "load_cs.m".
193    o pkg/seaice:
194      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
195        to the scalarProductMetric and the unrolling. By chance this does not
196        change the verification experiment, because of the particular domain
197        decomposition
198    o pkg/diagnostics:
199      - change default missing_value from UNSET_RL to -999.
200    o pkg/layers: improve vectorization of layers_fluxcalc.F
201      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
202        time spent in this routine by more than a factor of 3 on an NEC-SX8
203      - step 2: replace search algorithm by a bisection algorithm found in
204        Press et al. Numerical Recipes in Fortran. This algorithm can be
205        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
206        For now, use this algorithm only for TARGET_NEC_SX defined.
207      - moved the search algorithm into a separate subroutine, that is kept
208        within the same file for automatic inlining.
209      - modified catching potential errors
210    o pkg/ecco:
211      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
212    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
213      - modifications for ALLOW_GENTIM2D_CONTROL
214      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
215      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
216      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
217      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
218  o model/src:  o model/src:
219    - account for moist thermodynamics in (dry) potential temperature equation;    - account for moist thermodynamics in (dry) potential temperature equation;
220      update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)      update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)

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