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revision 1.2161 by mlosch, Mon Jun 15 15:48:41 2015 UTC revision 1.2198 by jmc, Thu Nov 12 20:07:13 2015 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/atm_ocn_coupler + ocn_compon_interf:
8      - in prep for using pkg/seaice Dyn in coupled set-up, implement sequential
9        coupling option-1: ATM -(cpl)-> OCN and then OCN -(cpl)-> ATM ;
10        add corresponding call in DO_OCEANIC_PHYS.
11    o coupler pkgs:
12      Start a new way to set-up optionally-exchanged variables (previously, only
13       there for exchange_DIC): switch on/off from 1 place, at run-time, in coupler
14       data.cpl (new) instead of at compile time in ATMIDS.h & OCNIDS.h ;
15       send switch to ATM & OCN compon before reading their own "data.cpl" (so that
16       compononent param default can be set accordingly).
17      Note: this new switch (cpl_exchange_[xxx]) is not a per variable switch
18       but rather applies to a group a fields (going both ways like for DIC)
19       and corresponds to an option of coupling config.
20      coupler (pkg/atm_ocn_coupler):
21      - change parameter file from "data" to "data.cpl" (in cpl_read_params.F),
22        and read namelist directly (without eessup S/R calls) instead of
23        in the very un-flexible old way, 1 param per line, in fixed order;
24      - add error-counter to track errors (e.g., missing "data.cpl") and to stop
25        cleanly in CPL_CHECK_CPLCONFIG
26      - add new coupling-exchange selectors (some not yet active) including
27        cpl_exchange_DIC (to set to 3 to replace atmCpl_exchange_DIC=T in ATMIDS.h
28                                             and ocnCpl_exchange_DIC=T in OCNIDS.h);
29      - add 2 new S/R (CPL_SEND_ATM/OCN_CPLPARMS) to send coupler-params to each
30        component ; called directly from coupler.F, after comp. registrations;
31      - rename few variable-ID names (in ATMIDS.h & OCNIDS.h):
32         atm/ocnSeaIceName --> atm/ocnSIceMassName ; atm/ocnFCO2Name ->
33          -> atm/ocnCO2FluxName ; atm/ocnWSpdName --> atm/ocnWindSpdName
34      components (pkg/atm_ & ocn_compon_interf):
35      - add ATM/OCN_CPL_OPTIONS.h in component pkgs and include the corresponding
36        CPP header file in all pkg source files.
37      - move checking of comp. configs out of cpl_exch_configs.F into new S/R
38        ATM/OCN_CHECK_CPLCONFIG;
39      - add error-counter to track errors (e.g., in "data.cpl") and to stop
40        cleanly in ATM/OCN_CHECK_CPLCONFIG;
41      - add new S/R CPL_IMPORT_CPLPARMS to import coupling-exchange selectors
42        from coupler ; called from initialise_fixed.F, after PACKAGES_BOOT and
43        before PACKAGES_READPARMS;
44      verification/cpl_aim+ocn/:
45      - update ATMIDS.h & OCNIDS.h (in shared_code) and use new parameter file
46        "data.cpl" for coupler (in input_cpl).
47    o eesupp/inc:
48      - change the MPI-global-sum default (in CPP_EEOPTIONS.h) to:
49        #define GLOBAL_SUM_ORDER_TILES (only affects MPI built of global_sum_tile.F)
50        to always cumulate tile local-sum in the same order (still uses
51        MPI_Allreduce like standard code).
52      - in verification experiment code, remove local CPP_EEOPTIONS.h_mpi files
53        that are now identical to standard version (in eesupp/inc).
54    o pkg/shelfice:
55      - add SHELFICETransCoeffTFile for initializing spatially varying
56        heat and salt transfer coefficients
57    o pkg/atm_compon_interf & ocn_compon_interf:
58      - combine into 1 (new) S/R CPL_EXPORT_IMPORT_DATA the two previous
59        S/R CPL_EXPORT_MY_DATA & CPL_IMPORT_EXTERNAL_DATA
60      - move bi,bj loops inside S/R OCN_STORE_MY_DATA
61    o pkg/atm_ocn_coupler:
62      - initialise to zero ATMVARS.h & OCNVARS.h arrays.
63    o pkg/rbcs:
64      - select RBCS-mask for Temp & Salt the same way as for pTracer ; this allows
65        to compile with maskLEN=1 when all tracers use the same RBCS-mask.
66      - add a short report (to STDOUT) about RBCS-mask settings.
67    
68    checkpoint65p (2015/10/23)
69    o pkg/seaice/seaice_evp.F: fix store directives and key computations, since
70        there is no adjoint test for EVP, we don't know what it does to the adjoint
71        solution, but at least there are no more recomputation warnings left
72    o pkg/seaice/seaice_evp.F: slight modification of averaging so that EVP stands
73        a chance of giving the same results as a fully converged VP (JFNK) solver
74    o tools/adjoint_options/adjoint_diva:
75      - fix bug (typo) in Tang-Linear FLAGS setting for MPI + DIVA
76    o pkg/streamice:
77      - spotted bug in streamice_driving_stress using dyG where should have been dxG
78    o pkg/exf:
79      - remove STOP statement that prevented to use wind or (wind-)stress
80        interpolation for constant-in-time forcing fields (wind/stress period = 0).
81    o pkg/seaice:
82      - replace SEAICE_EVP_USE_ADAPTATION by run time parameters, requires
83        5 additionals 2D fields and 6 new store directives
84      - change logic in seaice_readparms.F: EVP code can now be turned on in
85        various ways, setting SEAICE_deltaTev is no longer required,
86        alternatively set SEAICE_evpAlpha/Beta, SEAICEuseEVPstar, SEAICEuseEVPrev,
87        or SEAICEaEVPcoeff
88    o pkg/shelfice/shelfice_thermodynamics.F
89      - redefining uLoc/vLoc to u/v, instead of 2u/v
90    o pkg/seaice/seaice_evp.F: introduce "adaptive EVP" by Madlen Kimmritz
91      - this is an intermediate state of a truely converging EVP that has
92        the potential of outperforming implicit VP methods, I do not recommend
93        using it yet.
94      - for now, "adaptive EVP" is turned on by setting SEAICE_EVP_USE_ADAPTATION
95        and all parameters are hardwired
96      - for convergence it still requires very smooth regularisations, that means,
97        if SEAICE_DELTA_SMOOTHREG is defined, deltaCreg=deltaC+deltaMin, which is
98        different from the VP case with deltaCreg=sqrt(deltaC**2+deltaMin**2); also
99        specific averaging appears to be required, still subject to tuning
100      - still needs cleaning and I need to turn parameter into runtime parameters
101      - add code to compute and print residuals of iteration, compile with
102        defining ALLOW_SEAICE_EVP_RESIDUAL to enable it
103    o pkg/seaice/seaice_evp.F: fix a bug (factor of four in front of e12Csq)
104      that entered with r1.54 on Sep04, 2015, -> update results
105    
106    checkpoint65o (2015/09/14)
107    o pkg/mom_vecinv & mom_common:
108      - add deep-atmosphere geometry factor in mom_calc_visc.F + in routines
109        called from there.
110      - add anelastic and deep-atmosphere geometry factor in pkg/mom_vecinv ; this
111        allows to use Vector-Invariant form in deep atmos and anelastic formulation
112    o pkg/seaice: introduce fast ice parameterisation following Itkin et al. (2015)
113      and Koenig-Beatty+Holland (2012)
114      - two new parameters SEAICE_tensilFac and SEAICE_tensilDepth
115      - global 2D field tensileStrength, computed in seaice_calc_ice_strength
116      - requires an extra input argument for S/R seaice_calc_viscosities
117      - tensileStrength's depth dependence is different from Itkin et al. (2015)
118        (to be changed and played with, for now exponential)
119    o pkg/seaice: introduce new parameter SEAICEscaleSurfStress (default = .FALSE.)
120      - if TRUE scale ice-ocean and ice-atmosphere stress acting on sea ice
121        by AREA according to Connelly et al. (2004), JPO.
122      - For EVP and the LSR solver, the implicit part of the drag term is
123        the only non-zero term in the denominator when there is no ice (which
124        prevented running the model with zero ice-ocean drag). If
125        SEAICEscaleSurfStress = .TRUE., this results in a division by zero
126        (or zero main diagonals BU/BV) which need to be caught. A practical
127        consequence is that for open water, the momentum equation reduce
128        to trivially 0 = 0 + 0 (for EVP). For LSR, BU/BV are reset to 1, if
129        they happen to be zero, often leading to a non-zero solution over
130        open water.
131    o pkg/seaice: revise EVP code (seaice_evp.F) in preparation for a more
132        efficient EVP method.
133      - introduce area-weighted averages for e12 (analogously to
134        seaice_calc_viscosities.F); this totally changes lab_sea.hb87 (2 digits
135        remain, but also changing the order of terms in the previous average
136        changed the results as much) -> update experiment
137      - add SEAICE_DELTA_SMOOTHREG code
138      - disentangle computation of zetaC/deltaC and zetaZ/deltaZ, also for
139        TEM-code
140      - adjust loop bounds so that only required fields are computed
141      - add new averaging code for zetaZ/deltaZ (again similar to
142        seaice_calc_viscosities.F), inactive by default for now (will change
143        results again), but will replace old code eventually
144    o eesupp/src:
145      - add an other alternative for multi-proc GLOBAL_SUM (in global_sum_tile.F)
146        to always cumulate tile local-sum in the same order
147        (option #define GLOBAL_SUM_ORDER_TILES in CPP_EEOPTIONS.h).
148        Still uses MPI_Allreduce (like standard code) but on array of tiles
149        and should be faster than GLOBAL_SUM_SEND_RECV code.
150      - switch almost all verification experiments that use GLOBAL_SUM_SEND_RECV
151        (defined in CPP_EEOPTIONS.h_mpi) to GLOBAL_SUM_ORDER_TILES instead.
152      - add CPP_EEOPTIONS.h_mpi with GLOBAL_SUM_ORDER_TILES defined in 14 more exp.:
153         aim.5l_cs, cheapAML_box, deep_anelastic, dome, fizhi-cs-32x32x40,
154         fizhi-cs-aqualev20, fizhi-gridalt-hs, global_ocean_ebm, matrix_example,
155         natl_box, solid-body.cs-32x32x1, tutorial_advection_in_gyre,
156         tutorial_baroclinic_gyre and tutorial_held_suarez_cs.
157    
158    checkpoint65n (2015/07/29)
159    o pkg/thsice:
160      - add a warning when used with pkg/aim but without updating SST
161        (stepFwd_oceMxL=F & useCoupler=F & tauRelax_MxL<>-1 ).
162    o pkg/offline:
163      - change where Offline-Fields are loaded, from load_fields_driver.F to
164        directly within FORWARD_STEP, just after updating iter number and time;
165      - move setting of GM and KPP diffusivity out of OFFLINE_FIELDS_LOAD into new
166        S/R OFFLINE_GET_DIFFUS that is called towards the end of DO_OCEANIC_PHYS;
167       These changes allow:
168        a) to recover exactly on-line results using deltaToffline=deltaTClock,
169        tested (using offlineIter0= nIter0 -1 and offlineTimeOffset= -deltaT/2)
170        both with Lin & Non-Lin Free-Surf, both with staggerTimeStep & synchronous
171        time-step, both with GM & KPP files and with recomputing these fields;
172        b) no needs to switch on staggerTimeStep anymore;
173        c) simplify rescaling of offline horiz. velocity with Non-Lin Free-Surf.
174      - update output of experiment tutorial_dic_adjoffline (only 3 digits left).
175    o pkg/offline:
176      - change (rarely used) offset-iteration parameter to an offset time (in s):
177        can easily recover previous offset-iter effect by setting offset-time
178        (offlineTimeOffset) to offset-iter x deltaToffline;
179      - do not turn-off Temp & Salinity surface relaxation when using KPP (used
180        in KPP as part of surface buoyancy forcing) in offline run.
181      - fix ptracers KPP non-local term in the case where KPP is re-computed.
182    o OpenAD
183      - Adding preliminary ggl90 test to OpenAD verification.
184        Config. with ggl90 currently diverges after 64 time steps
185        so will need more work to become more stable
186      - Adding preliminary kpp test to OpenAD verification.
187        required small tweakes in kpp_routines.F
188      - Merge and update from Krishna Narayanan's contrib area:
189        * Add one variable for preliminary OpenAD DIVA
190        * Add replacement time-stepping for OpenAD DIVA
191        * genmake2 flag -diva (but only for OpenAD; preliminary)
192        * required modifs for OAD_support
193        successful preliminary test for tutorial_global_oce_biogeo/
194    o pkg/seaice:
195      - initialise deltaC in seaice_lsr, cosmetic changes in seaice_lsr
196      - add cpp-flag SEAICE_DELTA_SMOOTHREG for option of regularising
197        delta with a smooth function in s/r seaice_calc_viscosity
198        (no effect on EVP)
199      - rename local suffix "sqr" into "sq" for more consistent variable names
200    o pkg/seaice:
201        add new parameter SEAICE_deltaMin that is used ***only***
202        for regularizing Delta (and nothing else, like the parameter
203        which is also used for all sorts of things SEAICE_EPS).
204        Defaults to SEAICE_EPS for backward compatibility only.
205    o pkg/seaice: replace erroneously storing e12Csqr on the wrong tape with
206        the wrong key by inialising it before use -> fixes a recomputation
207        problem but does not fix the gradient
208    o pkg/layers:
209      - move resetting of flux arrays to outside the iLa loop
210        (this caused layers_diapycnal to not work with more than one layer coord.)
211      - fix bug in calculation of layers_recip_delta in layers_init_fixed.F
212    o pkg/layers:
213      - remove from common block 3D layers fields (used to diagnose transport
214        in tracer coords) and declare them as local arrays in layers_calc.F
215  o pkg/seaice:  o pkg/seaice:
216    - Rename SEAICE_VECTORIZE_LSR_ZEBRA to SEAICE_LSR_ZEBRA and define it    - Rename SEAICE_VECTORIZE_LSR_ZEBRA to SEAICE_LSR_ZEBRA and define it
217      in lab_sea forward experiment (changes results -> updated)      in lab_sea forward experiment (changes results -> updated)
218  o pkg/seaice: modify seaice_lsr.F in order to improve the gradient    - update adjoint experiment lab_sea after cleaning up seaice_lsr_tridiagu/v
219    computations; for SEAICE_VECTORIZE_LSR  o pkg/seaice: modify seaice_lsr.F in order to improve the gradient
220       computations; for SEAICE_VECTORIZE_LSR
221    - move the loops over which the tridiagonal solvers (seaice_lsr_tridiagu/v)    - move the loops over which the tridiagonal solvers (seaice_lsr_tridiagu/v)
222      sweep to the outside,      sweep to the outside,
223    - remove store directives and add "CADJ loop sequential" directives    - remove store directives and add "CADJ loop sequential" directives
224      in analogy to model/src/solve_tridiagonal.F      in analogy to model/src/solve_tridiagonal.F
225    - replace many "#ifdef SEAICE_VECTORIZE_LSR_ZEBRA" by variable loop    - replace many "#ifdef SEAICE_VECTORIZE_LSR_ZEBRA" by variable loop
226      boundaries to yield more readable code. This has also the charming side      boundaries to yield more readable code. This has also the charming side
227      effect that your can use SEAICE_VECTORIZE_LSR_ZEBRA without      effect that your can use SEAICE_VECTORIZE_LSR_ZEBRA without
228      SEAICE_VECTORIZE_LSR (i.e. adjoint without recomputations in      SEAICE_VECTORIZE_LSR (i.e. adjoint without recomputations in
229      seaice_lsr_tridiagu/v now requires either of these flags, vectorization      seaice_lsr_tridiagu/v now requires either of these flags, vectorization
230      still requires SEAICE_VECTORIZE_LSR with SEAICE_VECTORIZE_LSR_ZEBRA as      still requires SEAICE_VECTORIZE_LSR with SEAICE_VECTORIZE_LSR_ZEBRA as
231      an additional option)      an additional option)
232    The tridiagonal solvers are now completely analoguous to solve_tridiagonal.F     The tridiagonal solvers are now completely analoguous to solve_tridiagonal.F
233    but the adjoint gradients (which are affected by this change) still explode.     but the adjoint gradients (which are affected by this change) still explode.
234  o coupler (atm & ocn _compon_interf):  o coupler (atm & ocn _compon_interf):
235    - avoid using Exch2 IO mapping if not suitable.    - avoid using Exch2 IO mapping if not suitable.
236    
 >>>>>>> 1.2160  
237  checkpoint65m (2015/06/15)  checkpoint65m (2015/06/15)
238  o pkg/layers:  o pkg/layers:
239    - clean-up old parameters setting (from Sep 2012):    - clean-up old parameters setting (from Sep 2012):

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