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revision 1.1507 by jmc, Wed Sep 28 13:39:54 2011 UTC revision 1.1545 by jmc, Thu Dec 8 03:49:58 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 model/src:
8     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.    
9       to their current value at the beginning of forward_step.F": add a new run-time
10       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
11     - set doResetHFactors=T in the following test exp:
12        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
13        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
14        and tutorial_global_oce_in_p (nonLinFS in p)
15    o pkg/ecco
16      - added IES cost term
17    o verification/advect_xz
18      - scale down the depth by 1/100 (from 200 km to just 2.km)
19      - add secondary test using divergent flow, r-star and implicit vertical advection.
20      - add note (check_conserve_TS.txt) and matlab script to check global
21        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
22    o pkg/rbcs:
23      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
24    o pkg/obcs (Stevens BCs):
25      - fix various problems in the phase speed computations of the Stevens
26        boundary conditions:
27        - sign error for western and southern boundaries,
28        - time tendencies were underestimated by factor of dTracerLev and some just
29          zero (for multidim advection schemes) -> now estimate time tendencies
30          from difference between previous (n) time level and the one before (n-1);
31          this requires storing a field per tracer per boundary, also in the pickup
32          files.
33        - replace deltaTmom in cflMer/Zon computation with dTracerLev
34        - set default phase velocity to cflMer/Zon
35      - update verification experiment exp4.stevens
36    o pkg/generic_advdiff (implicit_r):
37      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
38        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
39      - fix implicit vertical diffusion or advection with NonLin FreeSurf
40        (was using current recip_hFacC instead of future recip_hFacC): set future
41        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
42        solver S/R ;
43      - fill diagnostics of vertical advective fluxes (computed from tendency)
44        when using implicit vert. advection;
45      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
46         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
47         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
48         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
49    o pkg/diagnostics:
50      - add diags for T & S tendency which goes through Adams-Bashforth.
51    
52    checkpoint63f (2011/11/30)
53    o pkg/obcs/obcs_calc_stevens.F:
54      - join some loops to reduce number of if-statements
55      - fix a bug in code for northern and southern boundaries.
56    o pkg/seaice/seaice_init_varia.F
57      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
58        caused zero ice-velocities for the B-grid code
59    o pkg/seaice/seaice_init_fixed.F
60      - fix a bug in the initialisation of the second metric terms
61        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
62      - this affects all seaice configurations with useCurviLinearGrid = .true.
63        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
64        = .true. (default)
65      - the only verification experiment affected is global_ocean.cs32x15:
66        icedyn, seaice, and seaice_dynmix (AD)
67    o pkg/thsice/thsice_diagnostics_state.F
68      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
69        not contain garbage that can lead to surprises in diagstats_calc.F
70    o model/src:
71      - move bi,bj loops inside INTEGR_CONTINUITY ;
72      - call INTEGR_CONTINUITY directly from forward_step.F
73        (previously called from momentum_correction_step.F)
74      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
75        forward_step.F and pkg/ecco/the_main_loop.F
76    o model/src/do_oceanic_phys.F:
77      - reset addMass to zero only if useICEFRONT ;
78      - separated k-loop for rhoInSitu calculation ;
79      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
80        and at constant T,S (= WdRHOdP);
81      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
82        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
83        transport of locally-referenced potential density);
84        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
85    o gluemnc:
86      - replace ncrcat with ncks when adding variables to *.glob.nc
87      - change the way variables without record dimensions are handled so that
88        files that have variables with and without record variables can be glued:
89        add a record dimension with a new unique name to be able to differentiate
90        between variable with and without a-prior record dimensions. Remove
91        this record dimension before adding the variable to the *.glob.nc file.
92        This procedure automatically works also for grid.*.nc files that do not
93        have any record dimension.
94    o verification/cpl_aim+ocn:
95      - generate new reference output on baudelaire (gfortran, mpich2) (previously
96        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
97    o pkg/obcs/obcs_calc_stevens.F:
98      - add code for northern and southern boundaries.
99      - reorder some loops to save some operations and so that drFBar can be scalar
100    o model/src:
101      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
102        truncation) and add diagnostics for Adams-Bashforth tendency increment.
103      - update test-exp. AD output:
104        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
105      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
106        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
107        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
108        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
109        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
110        tutorial_plume_on_slope.
111    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
112      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
113      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
114      does not even come with an F77 compiler anymore, this should not be
115      a limitation
116    
117    checkpoint63e (2011/11/06)
118    o pkg/seaice adjoint of LSR:
119      - substantially rework STORE dirs.
120      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
121        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
122        and only perform SOLV_MAX_FIXED adjoint iters.
123        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
124        always goes to same record, meaning that the last forward field will be
125        the one used in the adjoint - an approximation.
126      - now produces non-zero LSR-related gradients, and acceptable gradients for
127        An's zonal (x-z) test case (to be checked in)
128      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
129        (but these are screwed up by the thermodynamics in the first place);
130        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
131        output_adm.txt also reflects changes to seaice_lsr
132      - global_ocean.cs32x15:
133        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
134          (output_adm.seaice.txt was updated)
135        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
136          (output_adm.seaice_dynmix.txt)
137    o test-exp. exp4+stevens:
138      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
139    o pkg/seaice (lsr solver):
140      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
141        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
142      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
143      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
144        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
145      - compute (with new S/R) and print initial (+ free-driff sol. if available)
146        and final residual of linearised system.
147    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
148      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
149    o pkg/obcs: Stevens BCs (still only for east and west)
150      - fix Stevens BCs by using intermediate velocities of previous
151        time step as "baroclinic" contribution rather velocity of one grid cell
152        inside the boundaries; more consistent but makes the entire treatment
153        more complicated, requires new pickup files and two new S/Rs:
154        obcs_copy_uv_n and obcs_save_uv_n
155        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
156        (undefined by default)
157      - silently move computation of some grid factors into separate loops to
158        save some recomputations
159      - add a hack for non-linear free surface
160      - add a verification experiment to exp4 that tests this code
161    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
162    
163    checkpoint63d (2011/10/25)
164    o pkg/obcs + seaice-dynamics:
165      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
166        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
167        values (consistent with an implicit method).
168      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
169        return to older implementation (same results as before); note that none of
170        the "experimental" OBCS_SEAICE options are implemented in the new version.
171      - switch test exp. seaice_obcs to use new version (update output).
172    o pkg/seaice:
173      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
174      - add parenthesis in Water-Ice drag calculations (evp & lsr);
175      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
176        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
177      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
178        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
179    o pkg/layers:
180      - Include potential density as new coordinate (Thanks to David Munday)
181    o pkg/dic:
182      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
183        carbonate computation/output to CALC_PCO2_APPROX
184    o pkg/generic_advdiff
185      - make TAF generate code that vectorizes:
186        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
187    o model/src:
188      - improve vectorization also for adjoint code of
189        solve_tridiagonal and solve_pentadiagonal. As this requires up to
190        5 new 3D-fields, this code is only turned on for the combination of
191        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
192        for singular matrix check (only for TARGET_NEC_SX).
193      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
194        ALLOW_AUTODIFF. This flag now needs to be set outside of
195        solve_tri/pentadiagonal.F
196    o pkg/exf:
197      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
198        optional namelist EXF_NML_OBCS).
199      - add many debug-print (to trace down where pkg/cal error msg comes from)
200    o pkg/mom_vecinv/mom_vi_hdissip.F
201      - rearrange loops so that vectorization is improved and in particular
202        the adjoint routine vectorizes. The code is a little longer now, but I
203        think easier to read.
204        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
205    o pkg/seaice:
206      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
207    o pkg/exch2:
208      - alternative code (without tile x tile matrix) for cumulated (global) sum;
209        used as default; keep using matrix version in adjustment.cs-32x32x1.
210    o tools/build_options:
211      - after merging some MPI and/or multi-threads specific optfiles so that
212        the modified default optfile support both built (using genmake2 -mpi
213        for the MPI built, using genmake2 -omp for OpenMP built),
214        move now obsolete optfiles to tools/build_options/unsupported/
215       (add copy of email sent to support list in doc/optfiles_changes.txt)
216    
217  checkpoint63c (2011/09/28)  checkpoint63c (2011/09/28)
218  o pkg/ebm:  o pkg/ebm:
219    - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of    - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of

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