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revision 1.2015 by gforget, Sat Jun 28 22:50:34 2014 UTC revision 1.2028 by jmc, Fri Jul 18 13:37:32 2014 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/autodiff :  checkpoint65 (2014/07/18)
8    - introduce useSmoothCorrel2DinAdMode, SEAICEapproxLevInAd, and  o pkg/fizhi:
9      - add parenthesis around fizhi tendencies in fizhi_tendency_apply.F: this
10        affects results at machine truncation level. Update output of experiments
11        fizhi-cs-32x32x40 (12 digits for cg2d) & fizhi-cs-aqualev20 (13 digits).
12    o pkg/seaice: more clean up
13      - rename TAF common block tapes to be more consistent and remove
14        unnecessary duplicates
15      - add store directives to remove more recomputations, but use smaller
16        tapes (and adjust keys) when SEAICE_LSR_ADJOINT_ITER is undefined.
17        The idea behind this flag is to reduce the memory footprint when the
18        adjoint of the LSR is not required. As of now, defining the flag
19        SEAICE_LSR_ADJOINT_ITER increases 4 common block tapes for 2D field by
20        a factor of SOLV_MAX_FIXED (=500 by default in SEAICE_SIZE.h).
21        For experiment offline_exf_seaice, this means on a linux box with gfortran
22        nearly a factor of 10 (but keep in mind there is mostly seaice code in
23        this experiment):
24        > size mitgcmuv_ad
25        text    data        bss     dec        hex  
26        5100659 1216  220458952  225560827  d71c8fb
27        5339425 1200 1868783272 1874123897 6fb4dc79 (SEAICE_LSR_ADJOINT_ITER)
28        but only a moderate increase of 36% for global_ocean.cs32x15:
29        text    data        bss     dec        hex
30        6695027 1648 1014578664 1021275339 3cdf6ccb
31        6695203 1648 1382505320 1389202171 52cd8afb (SEAICE_LSR_ADJOINT_ITER)
32      - note: there are still recomputations in global_ocean.cs32x15 and
33        offline_exf_seaice and the gradient agreement changes (gets a
34        little worse) for global_ocean.cs32x15 (-> update output_adm.seaice.txt)
35      - in general, the AD gradients still are wrong
36    o OpenAD
37      - clean up code_oad/ directories somewhat by moving files
38        dontCompile, dontTransform, keepOriginal to OAD_support/
39    o model/src:
40      - using MOM fluxform and Non-Lin Free-Surf with momDissip_In_AB=F
41        (not currently tested): add dissipation terms before NLFS rescaling of
42        tendencies (previously done after).
43    o pkg/diagnostics:
44      - write stats-diags in ascii file with more digits (same as in monitor).
45    o pkg/down_slope:
46      - drop the bi,bj dimension of argument recip_hFac in S/R DWNSLP_APPLY; with
47        NLFS (not tested), use new recip_hFac value in order to conserve tracer.
48    o model/src:
49      - new file "apply_forcing.F" containing all the code previously in
50        external_forcing.F, but with new argument list: pass, as new argument,
51        the current level tendency array to update (instead of a direct update
52        of the common bloc array). Change the corresponding calls.
53      - add CPP option USE_OLD_EXTERNAL_FORCING (default is undef) to use
54        EXTERNAL_FORCING_U,V,T,S subroutines (for backward compatibility).
55    o pkg/seaice/seaice_lsr, a little bit of clean up
56      - rearrange some code blocks, so that now all calculations for
57        setting up the right-hand-sides done within one single block
58        (I find that easier to read and understand)
59      - rearrange freedrift-code to reduce the number of ifdefs
60      - adjust some indentations and comments
61    
62    checkpoint64z (2014/07/10)
63    o model/src and several pkgs:
64      - change argument list of all S/R called from external_forcing.F and
65        called from ptracers_forcing.F (renamed to ptracers_apply_forcing.F)
66        to pass, as argument, the current level tendency array to update
67        (instead of a direct update of the common bloc array).
68      - change also (in the same way) argument list of PTRACERS_APPLY_FORCING;
69      - rename taueddy_external_forcing.f to taueddy_tendency_apply.F
70    o pkg/seaice/seaice_lsr.F
71      - always initialize local arrays in seaice_lsr_tridiagu/v
72      - add more local tapes to seaice_lsr_tridiagu/v
73      - move storing u/vice(:,:,bi,bj) out of seaice_lsr_tridiagu/v, but
74        keep it in bi/bj loop; this seems to be essential
75      - gradients are still wrong but only by 4-7 orders of magnitude
76        instead of 15 orders of magnitude, lab_sea improves a little
77    o pkg/seaice
78      - (pkg/autodiff) remove storing/restoring of seaiceMaskU/V that
79        generates unnecessary code in seaice_lsr_ad
80      - add more store directives in seaice_lsr to avoid unnecessary code
81        in seaice_lsr_ad
82      - exclude some residual computations in seaice_lsr when
83        ALLOW_AUTODIFF_TAMC is defined in order to avoid unnecessary code
84        in seaice_lsr_ad
85      - add more storing, a new tape (model/src/the_main_loop.F) and
86        another key for SEAICE_LSR_VECTORIZE_ZEBRA (the local keys ilockey
87        and klockey should be checked by a specialist)
88      - modify ( define SEAICE_VECTORIZE_LSR and SEAICE_LSR_ADJOINT_ITER )
89        and update lab_sea after previous changes in pkg/seaice below
90    o pkg/autodiff:
91      - introduce useSmoothCorrel2DinAdMode, SEAICEapproxLevInAd, and
92      viscFacInAd : run time parameters allowing for adjoint switches      viscFacInAd : run time parameters allowing for adjoint switches
93      note : logic for useSmoothCorrel2DinAdMode is in ctrl_readparms.F      note : logic for useSmoothCorrel2DinAdMode is in ctrl_readparms.F
94  o pkg/ecco :  o pkg/ecco:
95    - introduce cost_gencost_boxmean.F that computes a box mean    - introduce cost_gencost_boxmean.F that computes a box mean
96      temperature (for use in adjoint sensitivity studies).      temperature (for use in adjoint sensitivity studies).
97  o model/src/set_defaults.F : initialize viscFacAdj to 1.  o model/src/set_defaults.F : initialize viscFacAdj to 1.
98  o pkg/mom_common/mom_calc_visc.F :  o pkg/mom_common/mom_calc_visc.F:
99    - ifdef ALLOW_AUTODIFF then include viscFacAdj factor.    - ifdef ALLOW_AUTODIFF then include viscFacAdj factor.
100  o pkg/seaice/seaice_summary.F :  o pkg/seaice/seaice_summary.F:
101    - statement for SEAICEadjMODE now in autodiff_readparms.F    - statement for SEAICEadjMODE now in autodiff_readparms.F
102  o pkg/seaice  o pkg/seaice:
   - remove unnecessary u/vTmp from subroutine call of  
     seaice_lsr_tridiagu/v  
103    - remove some store directives and add new ones in an effort to get    - remove some store directives and add new ones in an effort to get
104      finally rid off the recomputation warnings. This is successful      finally rid off the recomputation warnings. This is successful
105      when SEAICE_VECTORIZE_LSR ***and*** SEAICE_LSR_ADJOINT_ITER are      when SEAICE_VECTORIZE_LSR ***and*** SEAICE_LSR_ADJOINT_ITER are
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