Changes between Version 7 and Version 8 of schwarz

Timestamp:

07/12/19 15:16:20 (4 years ago)

Author:

snguyen

Comment:

--

schwarz

@@ -64 +64 @@
 Compiling LMDZ should be ok.
 
-As for NEMO you will need to update a configuration file: ``
+As for NEMO you will need to update a configuration file: `gcm.def_96x95_AP`
 
 Edit `COMP/lmdz.car` and put this line in `ParametersFiles`:
@@ -72 +72 @@
 to get the proper gcm.def file.
 
-In
+In `PARAM` make a copy of `gcm.def_96x95_AP` to `gcm.def_96x95_AP_SWZ` and add the following lines at the end:
+{{{
+## Schwarz coupling parameters from config.card
+## number of schwarz iterations
+mswr= 001
+## write output at schwarz iteration number ksout
+ksout= 001
+## first all physics iteration
+kall= 001
+## frequency of coupling in seconds
+ncplfrq= 86400
+}}}
+
+As a test, run the model with `mswr=1`, `ksout=1`, `kall=1` and `ncplfrq=<frequency of coupling of initial code>`.
+
+It should give you the same resultst with both Schwarz modifications in NEMO and LMDZ than with the initial code.
+
+== Additional modifications for better integration of config files and Schwarz iterations ==
+
+Now that everything is fine you can make these changes to `config.card`, `namelist_ORCA2_cfg` and `gcm.def_96x95_AP_SWZ`.
+
+In `config.card` add these lines to the `[UserChoices]` section:
+{{{
+##D-- Schwarz iterations parameters -
+## number of schwarz iterations
+mswr= 010
+### write output at schwarz iteration number ksout
+ksout= 010
+### first all physics iteration
+kall= 001
+### frequency of coupling in seconds (maybe it could be read from oasis.card)
+ncplfrq= 3600
+}}}
+
+The goal is to make these parameters global for NEMO and LMDZ.
+
+In `namelist_ORCA2_cfg` replace the values by `_AUTOBLOCKER_`:
+{{{
+   mswr        =  _AUTOBLOCKER_   !  number of scwharz iterations
+   ksout       =  _AUTOBLOCKER_   !  Schwarz iteration for output
+   kall        =  _AUTOBLOCKER_   !  first iteration with all physics
+   ncplfrq     =  _AUTOBLOCKER_   !  coupling frequency in seconds
+}}}
+
+In `gcm.def_96x95_AP_SWZ` do the same:
+{{{
+## Schwarz coupling parameters from config.card
+## number of schwarz iterations
+mswr= _AUTOBLOCKER_
+## write output at schwarz iteration number ksout
+ksout= _AUTOBLOCKER_
+## first all physics iteration
+kall= _AUTOBLOCKER_
+## frequency of coupling in seconds
+ncplfrq= _AUTOBLOCKER_
+}}}
+
+Now we will modify the NEMO and LMDZ driver files to set the values in both files with `config.card` values.
+
+In `DRIVER/opa9.card` add these lines for Schwarz in the Update function:
+{{{
+    IGCM_comp_modifyNamelist blocker    namelist_cfg nn_leapy     ${OPA_NLEAPY}
+    # Schwarz parameters from config.card
+    IGCM_comp_modifyNamelist blocker    namelist_cfg mswr         ${config_UserChoices_mswr}
+    IGCM_comp_modifyNamelist blocker    namelist_cfg ksout        ${config_UserChoices_ksout}
+    IGCM_comp_modifyNamelist blocker    namelist_cfg kall         ${config_UserChoices_kall}
+    IGCM_comp_modifyNamelist blocker    namelist_cfg ncplfrq      ${config_UserChoices_ncplfrq}
+}}}
+
+In `DRIVERlmdz.card` add these lines in the Update function:
+{{{
+    # guide.def : Activate nudging if ok_guide=y set in lmdz.card
+    if [ ! X${lmdz_UserChoices_ok_guide} = X ] ; then
+    IGCM_comp_modifyDefFile nonblocker guide.def ok_guide  ${lmdz_UserChoices_ok_guide}
+    else
+    IGCM_comp_modifyDefFile nonblocker guide.def ok_guide n
+    fi
+
+    # gcm.def : set schwarz parameters from config.card
+    IGCM_comp_modifyNamelist blocker gcm.def mswr         ${config_UserChoices_mswr}
+    IGCM_comp_modifyNamelist blocker gcm.def ksout        ${config_UserChoices_ksout}
+    IGCM_comp_modifyNamelist blocker gcm.def kall         ${config_UserChoices_kall}
+    IGCM_comp_modifyNamelist blocker gcm.def ncplfrq      ${config_UserChoices_ncplfrq}
+}}}