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revision 1.1243 by jmc, Thu Mar 25 20:24:09 2010 UTC revision 1.1259 by jmc, Thu Apr 29 13:56:40 2010 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint62f (2010/04/29)
8    o model/src/the_main_loop.F:
9      adjust store directives for seaice evp and multicategory according to
10      pkg/ecco/the_main_loop.F
11    o adjoint:
12      global_sum_ad was incomplete (noted many times by many people ;)
13      nice description by Jean U. as follows:
14      * allreduce(var) in global_sum.F can be interpreted as
15        reduce(sum) followed by broadcast of sum.  
16      * The adjoint of that is
17        sum(adjoint) followed by broadcast(summed adjoint value)
18        or in other words, allreduce(sum, adjoint vars)
19      We were missing the sum(adjoint)!
20      Benign, except(!) for "global" scalars appearing in tile loops (bi,bj)
21      (noted by J.M. Campin, e.g., in cost_ssh_mean, variable offset).
22      The fix should produce 16-digit accuracy between
23      single-CPU multi-tile (e.g. nSx=2, nPx=1) and
24      multi-CPU single-tile (e.g. nSx=1, nPx-2)
25      We'll probably change this yet again shortly
26    o eesupp/src:
27      - fix global_sum_r4 (wrong from previous modif in Jun 2009; ever used ?)
28    o pkg/icefront
29      - ALLOW_SUBGLACIAL_RUNOFF option adds capability for time-evolving
30        specification of addmass array based on a 2D field, which is added
31        at bottommost wet level at each horizontal location.
32    o model/src:
33     horizontal grid initialisation (other than curvilinear): add code for Exch2 IO
34     layout; (not always compatible with delX,delY setting; commented out for now).
35    o pkg/exch2:
36     change tile to processor setting (case nSy*nPy > 1): allows default model mapping
37     (myX and myYGlobalLow) to be used for simple (1 facet, no blank tile) config.
38    
39    checkpoint62e (2010/04/15)
40    o pkg/obcs:
41      - fix wrong index in OBCS_SPONGE_V for Eastern-OB (reported by David Hebert).
42    o pkg/dic:
43      -fix bug in fe_chem.F for multi-tile (nSx*nSy > 1) set-up;
44        (note: not presently tested in any forward verification exp.)
45       update tutorial_global_oce_biogeo AD output file.
46    o pkg/exf:
47      - account for the variation of albedo as a function of zenith angle
48        by defining ALLOW_ZENITHANGLE in EXF_OPTIONS.h
49    o build_options:
50     - rename "linux_ia64_ifort+mpi_ice_nas" to "linux_amd64_ifort+mpi_ice_nas"
51    o pkg/dic:
52      change DIC atmos-CO2 box (method 3, dic_int1=3) initialisation & restart:
53      - use binary pickup file for restart;
54      - initialise atmos-CO2 box from dic_pCO2 parameter;
55      - fix multi-threaded.
56    o pkg/rbcs:
57     - clean-up RBCS code: add RBCS_OPTIONS.h file ; fix multi-threaded ;
58       change (+ fix IO calls) type of array RBC_mask from _RL to _RS.
59     - add RBCS to exp4 passive tracer 01 (rbcs was previously untested)
60       and update output.txt
61    o pkg/kpp:
62     - add diagnostics for KPP non-local flux of Temp, Salinity and pTracers;
63     - change diagnostic of KPP non-local term: output average of KPPghat*KPPdiffKzS
64       (= ratio of KPP non-local (salt) flux relative to surface-flux) when
65       using pkg/timeave & pkg/diagnostics (diag 'KPPghatK' replaces 'KPPghat ');
66     - change pkg/offline to read-in average KPPghat*KPPdiffKzS from file
67       KPP_ghatKFile (instead of the average of KPPghat from file KPP_ghatFile).
68    o pkg/offline:
69      fix bug in S/R OFFLINE_FIELDS_LOAD regarding surfaceForcing conversion factor
70      (bug was added in version 1.10 on 2007-08-23).
71    o pkg/offline:
72      - no need to specify periodicExternalForcing, etc ... to use offline pack
73      - offline input files no longer just single prec --> parameter offlineLoadPrec
74  o verification/lab_sea:  o verification/lab_sea:
75    change to multi-tile setup.    change AD test to multi-tile setup and update all 4 AD output.
76    NOTE: while cost function values remain very similar,    NOTE: while cost function values remain very similar,
77    gradients are very different, although gradient checks are self-consistent    gradients are very different, although gradient checks are self-consistent
78    Should try to get to the bottom of this (cost function summation order?)    Should try to get to the bottom of this (cost function summation order?)

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