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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 model/src: |
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- store in common bloc array "rhoInSitu" the virtual potential temperature |
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anomaly that is used to compute geopotential: this make the atmos code |
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more similar to ocean code which already uses rhoInSitu in calc_phi_hyd.F |
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o pkg/seaice/seaice_lsr.F |
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- rename integer variable ilcall to ipass (that's what it is called |
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in the residual diagnostics |
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- change time stepping for NPSEUDOTIMESTEP > 2 (does not change the |
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default) for improved non-linear convergence of the first few steps |
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- adjust a few comments and add new ones to explain some of the store |
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directives |
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o pkg/generic_advdiff (& ptracers): |
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- re-work the code to check for valid advection scheme and for minimum |
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size of overlap (now stored in local common bloc in gad_advscheme.F) |
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o pkg/seaice: another attempt to make the adjoint work for sea ice dynamics |
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- re-initialize more variables in seaice_lsr: u/vIceC, u/vIceNm1 |
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- add an auxilliary variable "bet" and fix store directives and keys in |
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seaice_lsr_tridiagu/v, this seems to do the trick (i.e. more or |
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less exact gradients in my tests); but there are still |
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recomputation warning (although gradients are sort of OK), when |
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SEAICE_LSR_VECTORIZE is not defined, so this flag and |
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SEAICE_LSR_VECTORIZE_ZEBRA are recommended for efficiency. |
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- update verification experiments lab_sea. |
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- change some comments in S/R seaice_calc_viscosities |
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o model/src: |
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- if staggerTimeStep=T, always apply exchange to velocity field in |
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do_stagger_fields_exchanges.F instead of in do_fields_blocking_exchanges.F |
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(independent of using multi-dim advection or not); no effect on FWD run |
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but affects AD results (at machine truncation level): update output of |
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experiment 1D_ocean_ice_column (ad: 12 digits), hs94.1x64x5 (ad,oad: 13.d) |
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and isomip (oad: 12.d). |
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o pkg/generic_advdiff: |
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- stop if doAB_onGtGs is set to FALSE but ignored |
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- refine warning related to stability of tracer time-stepping |
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regarding internal wave dynamics. |
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- setting of AdamsBashforth_T,S when doAB_onGtGs=F: remove condition |
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on staggerTimeStep & implicitIntGravWave (will now get a warning |
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if potentially unstable). |
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o pkg/kl10: |
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- add new pkg "kl10" for mixing due to internal wave breaking, from |
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http://www.sciencedirect.com/science/article/pii/S1463500310000144 |
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(contribution from Jody Klymak), tested in verification experiment |
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verification/internal_wave/input.kl10/ |
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o isomip experiment: |
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- test pkg/shelfice with Non-Lin Free-Surf in one of the FWD set-up |
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(input.htd) and update the output. |
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o cd_code experiments: |
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- use default cd_code options (#undef CD_CODE_NO_AB_MOMENTUM & |
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#undef CD_CODE_NO_AB_CORIOLIS) in experiments: cfc_example (fwd) |
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global_ocean.90x40x15 (ad & oad) and OpenAD (ad & oad) and |
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update the corresponding output. |
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o pkg/seaice: |
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- reduce the number of include files and store directives in |
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S/R seaice_lsr_tridiagu/v |
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- change the order of loops in one case in S/R seaice_lsr_tridiagv |
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(only for SEAICE_VECTORIZE_LSR_ZEBRA defined), which allows me to |
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get rid off one store directive (a TAF bug?) |
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- add one more instance of ifdef SEAICE_VECTORIZE_LSR_ZEBRA in |
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S/R seaice_lsr_tridiagv to change the loop range for consistency |
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- remove ilcall, m from parameter list of S/R seaice_lsr_tridiagu/v |
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- fix a bug that affects the JFNK solver: replace sNx/y by i/jMax in |
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S/R seaice_lsr_tridiagu/v (requires update of |
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offline_exf_seaice/input.dyn_jfnk) |
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checkpoint65a (2014/07/27) |
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o model/src: |
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- Non-Lin Free-Surf in p/z coords: allows hFacW,S to be larger than |
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surrounding hFacC=1 @ edge of a step with different kSurfC on either side |
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(topo in p-coords, ice-shelf in z-coords); update output of experiments |
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tutorial_global_oce_in_p and isomip (both AD and OpenAD output). |
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o model/src: |
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- collect momentum forcing tendency into local 2-D array (passed as argument |
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to apply_forcing S/R); this simplifies mom. Forcing diagnostics and CD_CODE |
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parts in timestep.F (without CD_CODE_NO_AB_MOMENTUM defined = the default); |
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affects results at machine truncation level (e.g., if using OBCS_SPONGE). |
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- collect T & S forcing tendency into local 2-D array (passed as argument to |
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apply_forcing S/R); add 3-D diagnostics for temp & salt forcing tendency. |
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affects results at machine truncation level (e.g., ocean: if using |
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SHORTWAVE_HEATING and atmos:, if using FrictionHeating or (atm_Rq<>0) |
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moist correction due to vertical advection). |
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- update output of experiments: fizhi-cs-32x32x40 (13 digits), |
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global_ocean.cs32x15 (fwd: icedyn, seaice, thsice, all 3 @ 11d; adm & tml: |
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seaice_dynmix & thsice, fwd grd @ 3 & 8), hs94.1x64x5 (ad grd @ 13), |
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obcs_ctrl (ad & fwd grd @ 12 & 7). |
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o pkg/ptracers & diagnostics: |
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- use ptracers (short) name (instead of long one) to make ptracers diagnostics |
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title (to avoid some unexpected truncation); sort out ptracers diags units. |
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- collect ptracer forcing tendency into local 2-D array (passed as argument |
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to apply_forcing S/R); add 3-D diagnostics for ptracers forcing tendency. |
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checkpoint65 (2014/07/18) |
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o pkg/fizhi: |
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- add parenthesis around fizhi tendencies in fizhi_tendency_apply.F: this |
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affects results at machine truncation level. Update output of experiments |
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fizhi-cs-32x32x40 (12 digits for cg2d) & fizhi-cs-aqualev20 (13 digits). |
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o pkg/seaice: more clean up |
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- rename TAF common block tapes to be more consistent and remove |
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unnecessary duplicates |
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- add store directives to remove more recomputations, but use smaller |
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tapes (and adjust keys) when SEAICE_LSR_ADJOINT_ITER is undefined. |
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The idea behind this flag is to reduce the memory footprint when the |
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adjoint of the LSR is not required. As of now, defining the flag |
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SEAICE_LSR_ADJOINT_ITER increases 4 common block tapes for 2D field by |
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a factor of SOLV_MAX_FIXED (=500 by default in SEAICE_SIZE.h). |
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For experiment offline_exf_seaice, this means on a linux box with gfortran |
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nearly a factor of 10 (but keep in mind there is mostly seaice code in |
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this experiment): |
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> size mitgcmuv_ad |
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text data bss dec hex |
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5100659 1216 220458952 225560827 d71c8fb |
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5339425 1200 1868783272 1874123897 6fb4dc79 (SEAICE_LSR_ADJOINT_ITER) |
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but only a moderate increase of 36% for global_ocean.cs32x15: |
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text data bss dec hex |
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6695027 1648 1014578664 1021275339 3cdf6ccb |
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6695203 1648 1382505320 1389202171 52cd8afb (SEAICE_LSR_ADJOINT_ITER) |
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- note: there are still recomputations in global_ocean.cs32x15 and |
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offline_exf_seaice and the gradient agreement changes (gets a |
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little worse) for global_ocean.cs32x15 (-> update output_adm.seaice.txt) |
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- in general, the AD gradients still are wrong |
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o OpenAD |
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- clean up code_oad/ directories somewhat by moving files |
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dontCompile, dontTransform, keepOriginal to OAD_support/ |
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o model/src: |
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- using MOM fluxform and Non-Lin Free-Surf with momDissip_In_AB=F |
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(not currently tested): add dissipation terms before NLFS rescaling of |
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tendencies (previously done after). |
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o pkg/diagnostics: |
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- write stats-diags in ascii file with more digits (same as in monitor). |
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o pkg/down_slope: |
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- drop the bi,bj dimension of argument recip_hFac in S/R DWNSLP_APPLY; with |
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NLFS (not tested), use new recip_hFac value in order to conserve tracer. |
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o model/src: |
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- new file "apply_forcing.F" containing all the code previously in |
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external_forcing.F, but with new argument list: pass, as new argument, |
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the current level tendency array to update (instead of a direct update |
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of the common bloc array). Change the corresponding calls. |
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- add CPP option USE_OLD_EXTERNAL_FORCING (default is undef) to use |
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EXTERNAL_FORCING_U,V,T,S subroutines (for backward compatibility). |
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o pkg/seaice/seaice_lsr, a little bit of clean up |
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- rearrange some code blocks, so that now all calculations for |
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setting up the right-hand-sides done within one single block |
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(I find that easier to read and understand) |
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- rearrange freedrift-code to reduce the number of ifdefs |
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- adjust some indentations and comments |
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checkpoint64z (2014/07/10) |
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o model/src and several pkgs: |
o model/src and several pkgs: |
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- change argument list of all S/R called from external_forcing.F and |
- change argument list of all S/R called from external_forcing.F and |
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called from ptracers_forcing.F (renamed to ptracers_apply_forcing.F) |
called from ptracers_forcing.F (renamed to ptracers_apply_forcing.F) |
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