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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 pkg/seaice: add a line search option to the JFNK solver |
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- move update of u/vIce and computation of initial residual into a separate |
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routine (same file); makes the code a little easier to read (?) |
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- the line search requires computation of the residual and for some reason |
| 11 |
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I cannot do the update of u/vIce at the beginning of the Newton loop |
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without changing the results, so we move computation of the new residual |
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also to the end of the Newton loop, even without the line search |
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o pkg/mdsio: |
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- write missing value (corresponding to undefined array value) to meta files; |
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skip this if missing value is one (UNSET_RL would be a better value for the |
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case of undefined missing value but it's current the default missing-value); |
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Also update mdsio_read_meta.F (reading timeInterval & missing-value). |
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o pkg/exf & thsice: |
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- for diagnostics purpose, fill-up and update Qsw array (+ fill the diagnostics) |
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even when SHORTWAVE_HEATING is #undef; |
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o verification/cfc_example: |
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- turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to illustrate |
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how to use it). |
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o verification/offline_exf_seaice: |
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in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing |
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files to only one time-record. |
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in input.thermo: narrow the 2 bands of low initial ice-concentration near |
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N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for |
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snapshot output; same mcPheePiston value as in thsice with surf-current=0.2m/s. |
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in input.thsice: similar set-up as in input.thermo (channel with same seaice |
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initial conditions). |
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o verification/cfc_example: |
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- update file "data" with more standard choice (default rotationPeriod, |
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exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F, |
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set deltaTFreeSurf to deltaTtracer) and update the output. |
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o pkg/layers: |
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- fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC; |
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- ensure that "layers_bolus" is switched to False when useGMRedi=False. |
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o verification/offline_exf_seaice: |
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- set all {field}period to zero for constant-in-time forcing (not tested |
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anywhere else). |
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o verification/offline_exf_seaice: |
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- dyn_lsr : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice; |
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- dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice. |
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o model/src: |
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- implement Finite-Volume method for (hydrostatic) presure gradient |
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from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate. |
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o pkg/seaice: implement EVP* by Lemieux et al. (2012). |
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- In order to be compatible with the default EVP code, this requires changing |
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the EVP code around a little; and because any small change immediately |
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breaks the lab_sea.hb87 verification experiment, the reference output is |
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updated two times (each time the remaining aggrement was only 2 digits): |
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- after replacing 1/dt by 1*recip_dt with a precomputed recip_dt |
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- after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt |
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The adjoint test lab_sea.evp also needed to be updated. |
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- Turn on EVP* by setting SEAICE_deltaTevp as before, and setting |
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SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be |
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a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps |
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explicitly with SEAICEnEVPstarSteps (thereby overriding the default of |
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INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately |
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kept obscure, because I need to test it a little more. |
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o pkg/cheapaml: |
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- fix few incorrect type (_RL/_RS) in subroutine calls. |
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o pkg/seaice: |
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- new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays |
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to _RL vector; this fixes JFNK code when compiling with "-use_r4" option. |
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o model/src: |
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- add a warning if using select_rStar=2 with nonlinFreeSurf <> 4; |
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change (in input_ad*/data) select_rStar from 2 to 1 for AD verification |
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experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output) |
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o pkg/cheapaml: |
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- replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and |
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update output of experiment cheapAML_box. |
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- store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity, |
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and set them only in one place (cheapaml_readparms.F). |
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- replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI" |
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- remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms) |
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and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia). |
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o model/src/the_main_loop.F: |
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- fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION. |
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o pkg/seaice: |
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- remove legacy branch code. |
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- retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly. |
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o verification/*/code*/SEAICE_OPTIONS.h: |
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- remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY, |
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SEAICE_CAP_HEFF). |
| 88 |
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o pkg/cheapaml: |
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- use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time |
| 90 |
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to load new forcing fields. |
| 91 |
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- add missing "_d 0" where it's needed; + some editing (improve indentation). |
| 92 |
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- remove switch to "-r8" compiler option (no longer needed) in verification |
| 93 |
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cheapAML_box, keep same output (small trucation error differences). |
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o verification/offline_exf_seaice: |
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- add thermodynamics only test. |
| 96 |
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o verification/cheapAML_box: |
| 97 |
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- split the domain in 8 (2x4) tiles; add MPI and multi-threaded test; |
| 98 |
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keep same output (same 14 digits for cg2d). |
| 99 |
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- switch on "-r8" compiler option (some numerical values are missing |
| 100 |
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the "_d 0") and update output (only 6 digits for cg2d were preserved). |
| 101 |
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| 102 |
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checkpoint64b (2012/12/24) |
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o pkg/cheapaml: |
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- remove un-used variables (Qnet,EmPmR) from pickup files. |
| 105 |
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- store tendency of advected variables into cheapaml pickup file |
| 106 |
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and fix the AB-2 restart. |
| 107 |
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o verification/offline_exf_seaice and lab_sea adjoint: |
| 108 |
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- switch to new code (#undef SEAICE_GROWTH_LEGACY). |
| 109 |
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- switch to 4 time steps in offline, consistent with lab_sea. |
| 110 |
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- match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice. |
| 111 |
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- update results after change of experiment seaice. |
| 112 |
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o pkg/seaice: |
| 113 |
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- remove option SEAICE_MULTICATEGORY; has been replaced with run-time |
| 114 |
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parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is |
| 115 |
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still defined since SEAICE_multDim needs to be set to MULTDIM value (from |
| 116 |
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SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default. |
| 117 |
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o model/src: |
| 118 |
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- add run-time parameter to select CG2D solver minimum-residual solution |
| 119 |
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(in case of a poor convergence). |
| 120 |
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o pkg/seaice/seaice_lsr.F |
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- move calculation of matrix coefficients into new |
| 122 |
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S/R SEAICE_CALC_LSR_COEFFS; for now this routine remains in the same |
| 123 |
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file; the main purpose of this change is to be able to reuse the code |
| 124 |
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in S/R SEAICE_PRECONDITIONER |
| 125 |
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- modify the computation of the residual so that the mass of sea-ice |
| 126 |
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is not used twice; this simplifies the calculations, but since |
| 127 |
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the residual is never used except when LSR_mixIniGuess.ge.4---and this is |
| 128 |
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not tested in testreport---this does not affect the testreport results. |
| 129 |
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o verification/seaice_obcs: |
| 130 |
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- disable SEAICE_GROWTH_LEGACY; reset input files to match those of |
| 131 |
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verification/lab_sea/input.salt_plume; changes results/output.txt* |
| 132 |
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o model/src: |
| 133 |
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- adapt quasi-hydrostatic formulation to work with p or p* coordinate. |
| 134 |
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o pkg/seaice: |
| 135 |
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- improve description of parameters in seaice_fgmres.F and start |
| 136 |
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cleaning up the code |
| 137 |
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- change name of SCALPROD to SEAICE_SCALPROD and modify meaning of |
| 138 |
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second argument |
| 139 |
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- add a metric based on grid cell area to SEAICE_SCALPROD; update |
| 140 |
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results of offline_exf_seaice.dyn_jfnk |
| 141 |
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- compute initial residual norm in seaice_jfnk based on SEAICE_SCALPROD |
| 142 |
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o pkg/aim_v23: |
| 143 |
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- fix an other bug in dissipation heating (grid-cell area was missing). |
| 144 |
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o model/src + pkg/seaice: |
| 145 |
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- add global (multi-tile) linear solver for pair of tri-diagonal system |
| 146 |
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along X and Y lines, respectively for U and V component. |
| 147 |
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Note: 1) MPI and cube-exchange not yet coded. |
| 148 |
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2) probably not accurate for poorly conditioned / large size problem. |
| 149 |
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- add option for SEAICE_LSR to use global (multi-tile) tri-diagonal solver; |
| 150 |
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default: not compiled and not used. |
| 151 |
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o pkg/seaice: |
| 152 |
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- first attempt at a multi-threaded fgmres solver for the JFNK solver: |
| 153 |
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introduce bi/bj loops and use global_sum_tile_rl instead of |
| 154 |
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mpi_allreduce in seaice_fgmres.F |
| 155 |
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- improve diagnostics output for fgmres solver (seaice_fgmres.F) |
| 156 |
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- replace a few unnecessary goto statements by if-blocks (seaice_fgmres.F) |
| 157 |
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- add a verification experiment for JFNK in offline_exf_seaice |
| 158 |
o verification: |
o verification: |
| 159 |
- change (for now, only fwd test) offline_exf_seaice experiment: |
- change (for now, only fwd test) offline_exf_seaice experiment: |
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use a re-entrant channel with idealized costline (trapezoidal shape) |
use a re-entrant channel with idealized coastline (trapezoidal shape) |
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at southern boundary to explore seaice dynamics and thermodynamics |
at southern boundary to explore seaice dynamics and thermodynamics |
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with simple forcing. Main set-up has dynamics+thermo and SST relaxation; |
with simple forcing. Main set-up has dynamics+thermo and SST relaxation; |
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secondary test (input.thsice) use thermodynamics only with SST relaxation. |
secondary test (input.thsice) use thermodynamics only with SST relaxation. |
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