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Notes on tags used in MITgcmUV |
Notes on tags used in MITgcmUV |
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============================== |
============================== |
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o verification (using seaice): |
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- switch back seaice-dynamics (+ lower SOLV_MAX_ITERS) in ADM exp. |
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global_ocean.cs32x15.seaice ; update results. |
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- compile B-grid dynamics in FW test exp 1D_ocean_ice_column ; |
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- compile C-grid dynamics with #define SEAICE_ALLOW_JFNK in FW test exp |
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offline_exf_seaice (previously compiling B-grid). |
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o pkg/exf: |
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- fix some STOP conditions in exf_check.F (from Aug 28, modifs did not allow |
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to specify neither just 1 comp of wind or wind-stress, nor no surface momentum |
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forcing): just replace CPP option ALLOW_ATM_WIND with run-time param useAtmWind. |
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o pkg/layers (adjust changes from Sept 19): |
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- do snap-shot output and fill diagnostics from inside iLa loop (layers_calc.F) |
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this allows to remove "layers_maxNum" dimension from all layers arrays. |
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o pkg/layers (adjust changes from Sept 19): |
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- remove ALLOW_LAYERS_OUTPUT ; fix snap-shot and time-ave output ; |
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- snap-shot extended to all type of layers (not just the 1rst type); |
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- remove layers variables when corresponding CPP option is undef. |
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o pkg/layers: |
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- rename pkg/layers variable and add new output (layer exist & un-weighted |
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velocity in layer) |
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o pkg/seaice: |
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- simplify (?) ocean-drag coefficent computations by using |
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the same routine in all three solvers (saves some code lines) |
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- remove global fields DRAGA and DRAGS from C-grid code and |
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declare them locally in lsr.F (the only place where they are |
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still used) |
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- update AD output of lab_sea.evp (very sensitive anyway). |
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o pkg/seaice: add Jacobian-free Newton Krylov solver for ice dynamics |
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(Lemieux et al. 2010, 2012). Turn on with the usual SEAICE_ALLOW_JFNK |
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and SEAICEuseJFNK=.true. A few things to note: |
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- involves a FGMRES, that is parallel but very inefficient, |
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because of many scalar products (global sums) in the Gram-Schmidt |
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orthogonalization method. Needs to be replaced. Original code |
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from J.-F. Lemieux |
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- preconditioner for FGMRES is a stripped down version of LSOR |
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- SOLV_MAX_ITERS is now used for LSOR as a solver and as a |
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preconditioner. For the preconditioner, the default is set to 10. |
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- Jacobian times vector is computed with finite differences |
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- marginally related to JFNK-solver: add a smooth regularization for |
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zeta with tanh that will improve convergence (Lemieux and Tremblay, |
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2009) for any implicit solver (not implemented for EVP because EVP |
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does not need this regularization in the first place). Define |
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SEAICE_ZETA_SMOOTHREG in SEAICE_OPTIONS.h to use. |
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o eesupp/src: |
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- check in genmake2 that intrinsic S/R flush is available. |
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- add S/R to flush IO unit (if intrinsic S/R flush is available) |
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- flush standard & error msg unit before MPI termination |
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- if debugMode, flush IO unit after printing msg |
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o pkg/ctrl: |
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- ctrl_unpack.F, ALLOW_GENARR3D_CONTROL code: fix missing argument in call |
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to ctrl_set_unpack_xyz. |
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checkpoint64 (2012/10/09) |
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o pkg/shelfice |
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- in mom_fluxform.F, mom_vecinv.F: |
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CALL SHELFICE_V_DRAG(bi,bj,k,vFld,KE,KappaRU,vF,myThid) |
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Bug fix KappaRU -> KappaRV |
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does not change verification/isomip but may change other setups |
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(presumably constant KappaRU=KappaRV) |
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- fix diagnostics SHIU/Vdrag (thanks to Tom Millgate) |
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o pkg/obcs: |
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- fixed some indexing bugs in obcs_seaice_sponge.F |
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- added obcs relaxation subroutines for HSALT and HSNOW |
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- changes verification/seaice_obcs/results/obcs_seaice_sponge.F |
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o pkg/seaice: |
o pkg/seaice: |
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- add "multicategory" parameterization for snow in analogy to ice, |
- add "multicategory" parameterization for snow in analogy to ice, |
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default is off for now. |
default is off for now. |
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