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revision 1.1498 by jmc, Mon Aug 29 19:46:22 2011 UTC revision 1.1525 by heimbach, Mon Oct 31 03:30:19 2011 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/seaice adjoint of LSR:
8      - substantially rework STORE dirs.
9      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
10        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
11        and only perform SOLV_MAX_FIXED adjoint iters.
12      - now produces non-zero LSR-related gradients, and acceptable gradients for
13        An's zonal (x-z) test case (to be checked in)
14      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
15        (but these are screwed up by the thermodynamics in the first place);
16        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
17        output_adm.txt also reflects changes to seaice_lsr
18      - global_ocean.cs32x15:
19        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
20          (output_adm.seaice.txt was updated)
21        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
22          (output_adm.seaice_dynmix.txt)
23    o test-exp. exp4+stevens:
24      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
25    o pkg/seaice (lsr solver):
26      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
27        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
28      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
29      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
30        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
31      - compute (with new S/R) and print initial (+ free-driff sol. if available)
32        and final residual of linearised system.
33    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
34      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
35    o pkg/obcs: Stevens BCs (still only for east and west)
36      - fix Stevens BCs by using intermediate velocities of previous
37        time step as "baroclinic" contribution rather velocity of one grid cell
38        inside the boundaries; more consistent but makes the entire treatment
39        more complicated, requires new pickup files and two new S/Rs:
40        obcs_copy_uv_n and obcs_save_uv_n
41        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
42        (undefined by default)
43      - silently move computation of some grid factors into separate loops to
44        save some recomputations
45      - add a hack for non-linear free surface
46      - add a verification experiment to exp4 that tests this code
47    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
48    
49    checkpoint63d (2011/10/25)
50    o pkg/obcs + seaice-dynamics:
51      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
52        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
53        values (consistent with an implicit method).
54      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
55        return to older implementation (same results as before); note that none of
56        the "experimental" OBCS_SEAICE options are implemented in the new version.
57      - switch test exp. seaice_obcs to use new version (update output).
58    o pkg/seaice:
59      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
60      - add parenthesis in Water-Ice drag calculations (evp & lsr);
61      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
62        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
63      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
64        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
65    o pkg/layers:
66      - Include potential density as new coordinate (Thanks to David Munday)
67    o pkg/dic:
68      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
69        carbonate computation/output to CALC_PCO2_APPROX
70    o pkg/generic_advdiff
71      - make TAF generate code that vectorizes:
72        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
73    o model/src:
74      - improve vectorization also for adjoint code of
75        solve_tridiagonal and solve_pentadiagonal. As this requires up to
76        5 new 3D-fields, this code is only turned on for the combination of
77        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
78        for singular matrix check (only for TARGET_NEC_SX).
79      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
80        ALLOW_AUTODIFF. This flag now needs to be set outside of
81        solve_tri/pentadiagonal.F
82    o pkg/exf:
83      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
84        optional namelist EXF_NML_OBCS).
85      - add many debug-print (to trace down where pkg/cal error msg comes from)
86    o pkg/mom_vecinv/mom_vi_hdissip.F
87      - rearrange loops so that vectorization is improved and in particular
88        the adjoint routine vectorizes. The code is a little longer now, but I
89        think easier to read.
90        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
91    o pkg/seaice:
92      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
93    o pkg/exch2:
94      - alternative code (without tile x tile matrix) for cumulated (global) sum;
95        used as default; keep using matrix version in adjustment.cs-32x32x1.
96    o tools/build_options:
97      - after merging some MPI and/or multi-threads specific optfiles so that
98        the modified default optfile support both built (using genmake2 -mpi
99        for the MPI built, using genmake2 -omp for OpenMP built),
100        move now obsolete optfiles to tools/build_options/unsupported/
101       (add copy of email sent to support list in doc/optfiles_changes.txt)
102    
103    checkpoint63c (2011/09/28)
104    o pkg/ebm:
105      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
106        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
107    o pkg/seaice (SItracer pickup)
108    * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
109      To be done:
110      - thorough testing of missing fields in S/R seaice_read_pickup
111      - thorough matching between generic tracers and specific fields used
112        (e.g. volume-weighted age, area-weighted age, salinity, ...)
113    o pkg/grdchk:
114      - all procs calculate and print finite-difference gradient (for testreport)
115      - change description output used by testreport;
116      - AD testing: also compare and report Finite-difference gradient;
117        => update all output_adm*.txt
118    o test exp. global_ocean_ebm:
119      - switch back useRealFreshWaterFlux (no problem anymore with run-off);
120        and turn on exactConserve; update (fwd) output.
121    o pkg/seaice (LSR):
122      - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
123      - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
124        * identical results with non-CS topology (but save up to half of EXCH calls)
125        * no much changes in cs-32 verification tests since no ice at face edges
126         (differences due to convergence criteria, since nb of iterations changed)
127        * expect some differences on lat-lon-cap grid.
128        update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
129    o pkg/exch2:
130      - add new CPP option to disable Cumul-Sum matrix (to save storage when using
131        many tiles); until alternative coding is added, just add a stop.
132    o pkg/kpp:
133      - move ptracer/salt correction to KPP diffusivity from calc_3d_diffusivity.F
134        to S/R KPP_CALC_DIFF_PTR (+ add tracer-index to argument list).
135    o optfiles:
136      - merged few MPI specific (*+mpi*) and multi-threads specific (*+mth) optfiles
137        into corresponding standard one, which now support different build:
138        (when using "genmake2 -mpi" for MPI built, "genmake2 -omp" for OpenMP built)
139      - add "darwin_amd64_gfortran" optfile (initially from Constantinos, tested by Gael)
140    o pkg/obcs (seaice):
141      - add missing EXCH for uIce,vIce after applying OBCS;
142      - remove S/R EXF_SWAPFFIELDS_X/Y , disable S/R EXF_SET_OBCS_X/Y by adding
143        argument = number of levels to S/R EXF_SWAPFFIELDS_XZ/YZ and S/R
144        EXF_SET_OBCS_XZ/YZ ; update obcs_exf_load.F;
145      - fix EXF_SET_OBCS_XZ/YZ for multi-threaded (assuming loaded arrays are shared)
146      - verification exp. seaice_obcs: split domain in 2 tiles ; add SIZE.h_mpi
147        and eedata.mth for MPI and mutlti-threaded testing.
148    o pkg/flt:
149      - make FLT EXCH working with multi-threads (and MPI + multi-threads);
150      - use buffer for floats IO (trajectories & profiles); size set in FLT_SIZE.h;
151      - fix pickup and trajectories + profiles output with multi-threads;
152      - add parameter to select group of fields to write along trajectory and
153        profile (default unchanged);
154      - only call PORT_RAND* function when flt_noise <> 0;
155      - add multi-threaded test for verification exp. flt_example.
156    o eesupp/src:
157      - fix S/R ALL_PROC_DIE for MPI+multi-threads.
158      - USE_OMP_THREADING: check that number of threads (from eedata) matches
159        actual number (from env.var. setting).
160  o pkg/ebm:  o pkg/ebm:
161    - fix multi-threading in ebm_area_t.F ; clean-up EBM.h header file.    - fix multi-threading in ebm_area_t.F ; clean-up EBM.h header file.
162    - add multi-threaded test for verification exp. global_ocean_ebm    - add multi-threaded test for verification exp. global_ocean_ebm

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