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revision 1.1166 by jmc, Fri Oct 2 20:35:52 2009 UTC revision 1.1198 by mlosch, Mon Nov 23 16:41:30 2009 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o model: add Christopher Wolfe's implemetation of the single reduction cg2d
8     (d'Azevedo, Eijkhout, and Romine, 1999) with CPP-flag ALLOW_SRCG and
9     runtime flag useSRCGSolver. Modify verification experiment global_with_exf
10     to test this code
11    o pkg/cd_code:
12      Change defaut D-grid time-stepping to get the same for D-grid momentum as for
13       C-grid momentum. D-grid velocity used to be stepped forward in time with
14       Adams-Bashforth only on surface pressure term. Tests show that using AB on
15       D-grid coriolis term improves stability (as expected from CD-scheme paper).
16      To reproduce old results, add 2 options (in CD_CODE_OPTIONS.h).
17      Update results of exp: global_with_exf (x2), ideal_2D_oce, isomip (x2),
18       lab_sea (3 Fwd +3 AD), natl_box (x2), tutorial_global_oce_biogeo (Fwd+AD),
19       tutorial_global_oce_latlon, tutorial_global_oce_optim & tutorial_tracer_adjsens.
20      Keep old results by adding CD_CODE_OPTIONS.h in exp: cfc_example, exp2,
21           lobal_ocean.90x40x15(+AD), global_ocean_ebm(+AD) and OpenAD.
22    o pkg/obcs:
23     - fix bug in initialisation (broken since Oct 1rst modification)
24       for useOBCSprescribe without useEXF.
25    
26    checkpoint61y
27    o pkg/seaice
28     - change (once again) the discretization for the evp solver: rather than
29       squaring the averages of strain rates, average the squares to give
30       a better approximation to VP behavior (in simple test); this breaks
31       verification experiments that use EVP (lab_sea and lab_sea.hb87)
32        --> update outputs
33    o add CPP-flag (in mom_calc_visc.F) and TAF directive (in gmredi_slope_limit)
34      to improve vectorization of adjoint code on TARGET_NEC_SX
35    o verification/vermix:
36      - change vermix to a more "classical" 1d column with high vertical
37        resolution, seasonal heat flux forcing and constant wind forcing
38        --> update outputs
39    o pkg/seaice
40     - fix diagnostics of principal stress components for EVP
41     - add optional diagnostics of non-linear convergence for LSOR solver
42     - make maximum zeta a runtime parameter
43    o model/src (3-d solver):
44      Undo modif from Dec 12, 2005 (solve_for_pressure.F cvs version v.49),
45       which consisted in removing the Surf. Non-Hydrostatic pressure from the
46       whole column and adding it to Eta (inspired from Casualli, 1999):
47       Only affects 3-D solver initial guess and only if using ExactConserv,
48       but tests did show a degradation of solver convergence. For this reason,
49       decide to disable this piece of code.
50       to recover previous version, just set zeroPsNH = exactConserv (line 78).
51      Update output of exp. global_ocean.cs32x15.viscA4 & hs94.cs-32x32x5.impIGW
52    o pkg/ggl90:
53     - fix previous modif (unfortunatly has not been documented here).
54    o pkg/seaice/autodiff:
55     - add CPP flag to include clipping of zeta in EVP code;
56       although clipping of zeta is not necessary for EVP and not recommended
57       it was done by default, now clipping is disabled by default
58     - modify computation and store zetaC/Z in seaice_evp for TAF
59     - add CPP-flag SEAICE_ALLOW_CLIPVELS (undefined by default)
60     - change seaice_calc_viscosities/strainrates for better
61       vectorization after AD by TAF
62     - rearrange common blocks in SEAICE.h once again for easier dumps of
63       adjoint output, adjust adcommon.h and g_common.h
64     - change flux form of default advection scheme for better vectorization
65       of adjoint code
66     - modify lab_sea/input.lsr to test the flux form of default advection
67       scheme
68    o autodiff: fix seaice fields in g_common.h (left over from 3 to 1 level
69      transition in checkpoint61r)
70    
71    checkpoint61x
72    o adjoint: adding two new verification experiments
73      * tutorial_global_biogeo: an online dic sensitivity experiment
74        (work with G. Forget)
75      * tutorial_dic_adjoffline: an offline dic sensitivity experiment
76        (an update of the Dutkiewicz et al., 2006 paper)
77      Both use the same CO2FLUX cost function, but different controls
78      Gradient checks look good, but some recomp. could still be traightened out
79      Should add xx_dic control variable to test at some point
80    o model/src:
81      add run-time parameters to check and/or mask initial Temp & Salt
82    o pkg/ptracers:
83      apply zonal filter (if used) to all passive tracers
84    
85    checkpoint61w
86    o adjoint:
87      * update and finish work on adjoint of dic package (G. Forget)
88      * start adjoint of offline package
89      * bug fix for cube-sphere TLM code (active_file_g.F)
90    o tutorial_global_oce_optim:
91      now tested with 4 tiles (change data.grdchk and update output_adm.txt)
92      and add SIZE.h_mpi for MPI testing
93    o pkg autodiff
94     - fix bug in autodiff_restore
95     - make genmake2 remove comments and empty lines from ad_input_code.f in
96       order to reduce file size (new script file remove_comments_sed)
97    o allows to specify vertical profile of vertical viscosity (viscArNr)
98    o pkg autodiff
99      autodiff_ini_model_io: comment out writing of grid information to netcdf
100      files, because at this time the grid fields are a bunch of zeros
101      (this is analogous to ini_mnc_vars.F)
102    o pkg seaice/autodiff:
103     left-over from removing the 3-time-level fields:
104     - small rearrangement of common blocks (SEAICE.h)
105     - fix field declaration in order to get meaningful output in
106       adseaice.*.nc (adcommon.h)
107  o pkg obcs:  o pkg obcs:
108   - go through NH code only if nonHydrostatic=T   - go through NH code only if nonHydrostatic=T
109   - fix restart for Orlanski (Hydrostatic; still to fix NH+Orlanski restart)   - fix restart for Orlanski (Hydrostatic; still to fix NH+Orlanski restart)
110   - move call to OBCS_CALC before SEAICE_MODEL which needs seaice-obcields   - move call to OBCS_CALC before SEAICE_MODEL which needs seaice-obc fields
111     => Update output of experiment seaice_obcs     => Update output of experiment seaice_obcs
112   - useOBCSbalance: code is wrong with multi-tile / proc: add a stop.   - useOBCSbalance: code is wrong with multi-tile / proc: add a stop.
113   - hack obcs_calc.F to fix restart in experiment seaice_obcs.   - fix NH+Orlanski restart (add wvel OBC value in pickup file)
114     - fix restart for useOBCSprescribe + useEXF
115  o pkg ctrl  o pkg ctrl
116   - make obcs as control parameter work also with useSingleCPUio   - make obcs as control parameter work also with useSingleCPUio
117   - replace a few sny and snx by Ny and Nx to be consistent with   - replace a few sny and snx by Ny and Nx to be consistent with

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