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revision 1.2157 by rpa, Tue Jun 9 16:31:45 2015 UTC revision 1.2199 by jmc, Mon Nov 16 23:32:58 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 model/src:
8      - fix wrong truncation (single prec) from "FLOAT" function in expressions
9        like: deltaT*FLOAT(myIter) when myIter is large:
10         a) replaced by DFLOAT (if not seen by TAF);
11         b) remove "FLOAT" and use implicit type conversion (if seen by TAF).
12    o pkg/aim_v23:
13      - write/read the expected CO2 pickups (from S/R AIM_DO_CO2): fix reading
14        when pickupSuff is set ; do write rolling pickups + at the end of the run.
15    o pkg/atm_ocn_coupler + ocn_compon_interf:
16      - in prep for using pkg/seaice Dyn in coupled set-up, implement sequential
17        coupling option-1: ATM -(cpl)-> OCN and then OCN -(cpl)-> ATM ;
18        add corresponding call in DO_OCEANIC_PHYS.
19    o coupler pkgs:
20      Start a new way to set-up optionally-exchanged variables (previously, only
21       there for exchange_DIC): switch on/off from 1 place, at run-time, in coupler
22       data.cpl (new) instead of at compile time in ATMIDS.h & OCNIDS.h ;
23       send switch to ATM & OCN compon before reading their own "data.cpl" (so that
24       compononent param default can be set accordingly).
25      Note: this new switch (cpl_exchange_[xxx]) is not a per variable switch
26       but rather applies to a group a fields (going both ways like for DIC)
27       and corresponds to an option of coupling config.
28      coupler (pkg/atm_ocn_coupler):
29      - change parameter file from "data" to "data.cpl" (in cpl_read_params.F),
30        and read namelist directly (without eessup S/R calls) instead of
31        in the very un-flexible old way, 1 param per line, in fixed order;
32      - add error-counter to track errors (e.g., missing "data.cpl") and to stop
33        cleanly in CPL_CHECK_CPLCONFIG
34      - add new coupling-exchange selectors (some not yet active) including
35        cpl_exchange_DIC (to set to 3 to replace atmCpl_exchange_DIC=T in ATMIDS.h
36                                             and ocnCpl_exchange_DIC=T in OCNIDS.h);
37      - add 2 new S/R (CPL_SEND_ATM/OCN_CPLPARMS) to send coupler-params to each
38        component ; called directly from coupler.F, after comp. registrations;
39      - rename few variable-ID names (in ATMIDS.h & OCNIDS.h):
40         atm/ocnSeaIceName --> atm/ocnSIceMassName ; atm/ocnFCO2Name ->
41          -> atm/ocnCO2FluxName ; atm/ocnWSpdName --> atm/ocnWindSpdName
42      components (pkg/atm_ & ocn_compon_interf):
43      - add ATM/OCN_CPL_OPTIONS.h in component pkgs and include the corresponding
44        CPP header file in all pkg source files.
45      - move checking of comp. configs out of cpl_exch_configs.F into new S/R
46        ATM/OCN_CHECK_CPLCONFIG;
47      - add error-counter to track errors (e.g., in "data.cpl") and to stop
48        cleanly in ATM/OCN_CHECK_CPLCONFIG;
49      - add new S/R CPL_IMPORT_CPLPARMS to import coupling-exchange selectors
50        from coupler ; called from initialise_fixed.F, after PACKAGES_BOOT and
51        before PACKAGES_READPARMS;
52      verification/cpl_aim+ocn/:
53      - update ATMIDS.h & OCNIDS.h (in shared_code) and use new parameter file
54        "data.cpl" for coupler (in input_cpl).
55    o eesupp/inc:
56      - change the MPI-global-sum default (in CPP_EEOPTIONS.h) to:
57        #define GLOBAL_SUM_ORDER_TILES (only affects MPI built of global_sum_tile.F)
58        to always cumulate tile local-sum in the same order (still uses
59        MPI_Allreduce like standard code).
60      - in verification experiment code, remove local CPP_EEOPTIONS.h_mpi files
61        that are now identical to standard version (in eesupp/inc).
62    o pkg/shelfice:
63      - add SHELFICETransCoeffTFile for initializing spatially varying
64        heat and salt transfer coefficients
65    o pkg/atm_compon_interf & ocn_compon_interf:
66      - combine into 1 (new) S/R CPL_EXPORT_IMPORT_DATA the two previous
67        S/R CPL_EXPORT_MY_DATA & CPL_IMPORT_EXTERNAL_DATA
68      - move bi,bj loops inside S/R OCN_STORE_MY_DATA
69    o pkg/atm_ocn_coupler:
70      - initialise to zero ATMVARS.h & OCNVARS.h arrays.
71    o pkg/rbcs:
72      - select RBCS-mask for Temp & Salt the same way as for pTracer ; this allows
73        to compile with maskLEN=1 when all tracers use the same RBCS-mask.
74      - add a short report (to STDOUT) about RBCS-mask settings.
75    
76    checkpoint65p (2015/10/23)
77    o pkg/seaice/seaice_evp.F: fix store directives and key computations, since
78        there is no adjoint test for EVP, we don't know what it does to the adjoint
79        solution, but at least there are no more recomputation warnings left
80    o pkg/seaice/seaice_evp.F: slight modification of averaging so that EVP stands
81        a chance of giving the same results as a fully converged VP (JFNK) solver
82    o tools/adjoint_options/adjoint_diva:
83      - fix bug (typo) in Tang-Linear FLAGS setting for MPI + DIVA
84    o pkg/streamice:
85      - spotted bug in streamice_driving_stress using dyG where should have been dxG
86    o pkg/exf:
87      - remove STOP statement that prevented to use wind or (wind-)stress
88        interpolation for constant-in-time forcing fields (wind/stress period = 0).
89    o pkg/seaice:
90      - replace SEAICE_EVP_USE_ADAPTATION by run time parameters, requires
91        5 additionals 2D fields and 6 new store directives
92      - change logic in seaice_readparms.F: EVP code can now be turned on in
93        various ways, setting SEAICE_deltaTev is no longer required,
94        alternatively set SEAICE_evpAlpha/Beta, SEAICEuseEVPstar, SEAICEuseEVPrev,
95        or SEAICEaEVPcoeff
96    o pkg/shelfice/shelfice_thermodynamics.F
97      - redefining uLoc/vLoc to u/v, instead of 2u/v
98    o pkg/seaice/seaice_evp.F: introduce "adaptive EVP" by Madlen Kimmritz
99      - this is an intermediate state of a truely converging EVP that has
100        the potential of outperforming implicit VP methods, I do not recommend
101        using it yet.
102      - for now, "adaptive EVP" is turned on by setting SEAICE_EVP_USE_ADAPTATION
103        and all parameters are hardwired
104      - for convergence it still requires very smooth regularisations, that means,
105        if SEAICE_DELTA_SMOOTHREG is defined, deltaCreg=deltaC+deltaMin, which is
106        different from the VP case with deltaCreg=sqrt(deltaC**2+deltaMin**2); also
107        specific averaging appears to be required, still subject to tuning
108      - still needs cleaning and I need to turn parameter into runtime parameters
109      - add code to compute and print residuals of iteration, compile with
110        defining ALLOW_SEAICE_EVP_RESIDUAL to enable it
111    o pkg/seaice/seaice_evp.F: fix a bug (factor of four in front of e12Csq)
112      that entered with r1.54 on Sep04, 2015, -> update results
113    
114    checkpoint65o (2015/09/14)
115    o pkg/mom_vecinv & mom_common:
116      - add deep-atmosphere geometry factor in mom_calc_visc.F + in routines
117        called from there.
118      - add anelastic and deep-atmosphere geometry factor in pkg/mom_vecinv ; this
119        allows to use Vector-Invariant form in deep atmos and anelastic formulation
120    o pkg/seaice: introduce fast ice parameterisation following Itkin et al. (2015)
121      and Koenig-Beatty+Holland (2012)
122      - two new parameters SEAICE_tensilFac and SEAICE_tensilDepth
123      - global 2D field tensileStrength, computed in seaice_calc_ice_strength
124      - requires an extra input argument for S/R seaice_calc_viscosities
125      - tensileStrength's depth dependence is different from Itkin et al. (2015)
126        (to be changed and played with, for now exponential)
127    o pkg/seaice: introduce new parameter SEAICEscaleSurfStress (default = .FALSE.)
128      - if TRUE scale ice-ocean and ice-atmosphere stress acting on sea ice
129        by AREA according to Connelly et al. (2004), JPO.
130      - For EVP and the LSR solver, the implicit part of the drag term is
131        the only non-zero term in the denominator when there is no ice (which
132        prevented running the model with zero ice-ocean drag). If
133        SEAICEscaleSurfStress = .TRUE., this results in a division by zero
134        (or zero main diagonals BU/BV) which need to be caught. A practical
135        consequence is that for open water, the momentum equation reduce
136        to trivially 0 = 0 + 0 (for EVP). For LSR, BU/BV are reset to 1, if
137        they happen to be zero, often leading to a non-zero solution over
138        open water.
139    o pkg/seaice: revise EVP code (seaice_evp.F) in preparation for a more
140        efficient EVP method.
141      - introduce area-weighted averages for e12 (analogously to
142        seaice_calc_viscosities.F); this totally changes lab_sea.hb87 (2 digits
143        remain, but also changing the order of terms in the previous average
144        changed the results as much) -> update experiment
145      - add SEAICE_DELTA_SMOOTHREG code
146      - disentangle computation of zetaC/deltaC and zetaZ/deltaZ, also for
147        TEM-code
148      - adjust loop bounds so that only required fields are computed
149      - add new averaging code for zetaZ/deltaZ (again similar to
150        seaice_calc_viscosities.F), inactive by default for now (will change
151        results again), but will replace old code eventually
152    o eesupp/src:
153      - add an other alternative for multi-proc GLOBAL_SUM (in global_sum_tile.F)
154        to always cumulate tile local-sum in the same order
155        (option #define GLOBAL_SUM_ORDER_TILES in CPP_EEOPTIONS.h).
156        Still uses MPI_Allreduce (like standard code) but on array of tiles
157        and should be faster than GLOBAL_SUM_SEND_RECV code.
158      - switch almost all verification experiments that use GLOBAL_SUM_SEND_RECV
159        (defined in CPP_EEOPTIONS.h_mpi) to GLOBAL_SUM_ORDER_TILES instead.
160      - add CPP_EEOPTIONS.h_mpi with GLOBAL_SUM_ORDER_TILES defined in 14 more exp.:
161         aim.5l_cs, cheapAML_box, deep_anelastic, dome, fizhi-cs-32x32x40,
162         fizhi-cs-aqualev20, fizhi-gridalt-hs, global_ocean_ebm, matrix_example,
163         natl_box, solid-body.cs-32x32x1, tutorial_advection_in_gyre,
164         tutorial_baroclinic_gyre and tutorial_held_suarez_cs.
165    
166    checkpoint65n (2015/07/29)
167    o pkg/thsice:
168      - add a warning when used with pkg/aim but without updating SST
169        (stepFwd_oceMxL=F & useCoupler=F & tauRelax_MxL<>-1 ).
170    o pkg/offline:
171      - change where Offline-Fields are loaded, from load_fields_driver.F to
172        directly within FORWARD_STEP, just after updating iter number and time;
173      - move setting of GM and KPP diffusivity out of OFFLINE_FIELDS_LOAD into new
174        S/R OFFLINE_GET_DIFFUS that is called towards the end of DO_OCEANIC_PHYS;
175       These changes allow:
176        a) to recover exactly on-line results using deltaToffline=deltaTClock,
177        tested (using offlineIter0= nIter0 -1 and offlineTimeOffset= -deltaT/2)
178        both with Lin & Non-Lin Free-Surf, both with staggerTimeStep & synchronous
179        time-step, both with GM & KPP files and with recomputing these fields;
180        b) no needs to switch on staggerTimeStep anymore;
181        c) simplify rescaling of offline horiz. velocity with Non-Lin Free-Surf.
182      - update output of experiment tutorial_dic_adjoffline (only 3 digits left).
183    o pkg/offline:
184      - change (rarely used) offset-iteration parameter to an offset time (in s):
185        can easily recover previous offset-iter effect by setting offset-time
186        (offlineTimeOffset) to offset-iter x deltaToffline;
187      - do not turn-off Temp & Salinity surface relaxation when using KPP (used
188        in KPP as part of surface buoyancy forcing) in offline run.
189      - fix ptracers KPP non-local term in the case where KPP is re-computed.
190    o OpenAD
191      - Adding preliminary ggl90 test to OpenAD verification.
192        Config. with ggl90 currently diverges after 64 time steps
193        so will need more work to become more stable
194      - Adding preliminary kpp test to OpenAD verification.
195        required small tweakes in kpp_routines.F
196      - Merge and update from Krishna Narayanan's contrib area:
197        * Add one variable for preliminary OpenAD DIVA
198        * Add replacement time-stepping for OpenAD DIVA
199        * genmake2 flag -diva (but only for OpenAD; preliminary)
200        * required modifs for OAD_support
201        successful preliminary test for tutorial_global_oce_biogeo/
202    o pkg/seaice:
203      - initialise deltaC in seaice_lsr, cosmetic changes in seaice_lsr
204      - add cpp-flag SEAICE_DELTA_SMOOTHREG for option of regularising
205        delta with a smooth function in s/r seaice_calc_viscosity
206        (no effect on EVP)
207      - rename local suffix "sqr" into "sq" for more consistent variable names
208    o pkg/seaice:
209        add new parameter SEAICE_deltaMin that is used ***only***
210        for regularizing Delta (and nothing else, like the parameter
211        which is also used for all sorts of things SEAICE_EPS).
212        Defaults to SEAICE_EPS for backward compatibility only.
213    o pkg/seaice: replace erroneously storing e12Csqr on the wrong tape with
214        the wrong key by inialising it before use -> fixes a recomputation
215        problem but does not fix the gradient
216    o pkg/layers:
217      - move resetting of flux arrays to outside the iLa loop
218        (this caused layers_diapycnal to not work with more than one layer coord.)
219      - fix bug in calculation of layers_recip_delta in layers_init_fixed.F
220    o pkg/layers:
221      - remove from common block 3D layers fields (used to diagnose transport
222        in tracer coords) and declare them as local arrays in layers_calc.F
223    o pkg/seaice:
224      - Rename SEAICE_VECTORIZE_LSR_ZEBRA to SEAICE_LSR_ZEBRA and define it
225        in lab_sea forward experiment (changes results -> updated)
226      - update adjoint experiment lab_sea after cleaning up seaice_lsr_tridiagu/v
227    o pkg/seaice: modify seaice_lsr.F in order to improve the gradient
228       computations; for SEAICE_VECTORIZE_LSR
229      - move the loops over which the tridiagonal solvers (seaice_lsr_tridiagu/v)
230        sweep to the outside,
231      - remove store directives and add "CADJ loop sequential" directives
232        in analogy to model/src/solve_tridiagonal.F
233      - replace many "#ifdef SEAICE_VECTORIZE_LSR_ZEBRA" by variable loop
234        boundaries to yield more readable code. This has also the charming side
235        effect that your can use SEAICE_VECTORIZE_LSR_ZEBRA without
236        SEAICE_VECTORIZE_LSR (i.e. adjoint without recomputations in
237        seaice_lsr_tridiagu/v now requires either of these flags, vectorization
238        still requires SEAICE_VECTORIZE_LSR with SEAICE_VECTORIZE_LSR_ZEBRA as
239        an additional option)
240       The tridiagonal solvers are now completely analoguous to solve_tridiagonal.F
241       but the adjoint gradients (which are affected by this change) still explode.
242    o coupler (atm & ocn _compon_interf):
243      - avoid using Exch2 IO mapping if not suitable.
244    
245    checkpoint65m (2015/06/15)
246    o pkg/layers:
247      - clean-up old parameters setting (from Sep 2012):
248        + remove old parameters setting from common block (declared locally);
249        + stop if any old parameter is mixed with new parameters;
250        + check for valid or consistent parameter setting (e.g., layers_name)
251      - check that layers_bounds for Pot.Density are in the right range;
252        this is supposed to catch un-updated setting after recently shifting
253        potential density field "prho" by -1000 (now in "sigma" scale).
254  o pkg/layers:  o pkg/layers:
255    - Added missing call to layers_fill for keeping track of tottend in    - Added missing call to layers_fill for keeping track of tottend in
256      pkg/diagnostics/diagnostics_fill_state.F      pkg/diagnostics/diagnostics_fill_state.F
# Line 21  o pkg/layers: Line 268  o pkg/layers:
268      thermodynamics.F, impldiff.F) and gad to save the necessary fields      thermodynamics.F, impldiff.F) and gad to save the necessary fields
269      for layers_thermodynamics calculations      for layers_thermodynamics calculations
270  o pkg/ptracers:  o pkg/ptracers:
271    - add capability of stepping a passive tracer forward    - add capability of stepping a passive tracer forward without advection
272      without advection by setting PTRACERS_advScheme to 0.      by setting PTRACERS_advScheme to 0.
273  o pkg/diagnostics:  o pkg/diagnostics:
274    - add few (threads) _BARRIER around any update of "diag_pkgStatus".    - add few (threads) _BARRIER around any update of "diag_pkgStatus".
275  o pkg/layers:  o pkg/layers:

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