TOC(heading=Using libIGCM library with ORCA2_LIM nemo_v3_4, depth=2, libIGCM/setupsimupage, libIGCM/change_BC, libIGCM/postprocessingpage, libIGCM/postalreadyrunpage, libIGCM_nemo_v_3_4/parallelpage_3_4, libIGCM/common_account, libIGCM/suggestpage, libIGCM/appendixpage )?

Using libIGCM library with ORCA2_LIM for nemo_v3_4

Purposes

• Document the using of Libigcm for NEMO version 3_4, in configuration ORCA2_LIM

• Official documentation of Libigcm is :

​http://forge.ipsl.jussieu.fr/igcmg/wiki/platform/documentation

Quick start guide : downloading nemo_3_4

downloading NEMO v3_4 default configuration is:
climatological run, with bulk core forcing, focring files COREII,
with calendar type noleap
and ocean output frequency 1Y,1M,5D,1D, ice output frequency 5D,
with iom_put, (with an example of iodef.xml file),
without MONITORING, and ATLAS.

• Define the following alias to use SVN :
  

   alias svn_ano='svn co http://forge.ipsl.jussieu.fr/igcmg/svn/modipsl/trunk modipsl'
  
  

• Create and go into working directory :
  

   mkdir TRY ; cd TRY
  
  

• Extract modipsl :
  

   svn_ano 
  

• Extract NEMOGCM : (verify NEMOGCM definition in modipsl/util/mod.def file)
  

   cd modipsl/util 
   ./model NEMOGCM
  

• Choose and compile configuration (for example if you run ORCA2_LIM configuration on "ada" machine at idris) :
  

   cd ../modeles/NEMOGCM/CONFIG
   ./makenemo -m x3750_ADA -n ORCA2_LIM
  
   (executable is created in ORCA2_LIM/BLD/bin directory)
  

Using ./makenemo -h to see help ( to see list of compilers availables, to see options,...)

NOTE : IF YOU WANT TO COMPILE NEMO code that is not the NEMO directory, you can put you your NEMO code into (for example) MY_NEMO and compile it in this way

cp /PATH/YOUR_NEMO_DIR  NEMOGCM/MY_NEMO

cd NEMOGCM/CONFIG
 ./makenemo -n ORCA2_LIM -s MY_NEMO -m x3750_ADA -j0

 -j0 option create only configuration directory but does not compile it
 -j8 compile with 8 proc for compilation phase (but you do not have parallel code compiled)

• Copy executable nemo.exe in modipsl :

• cd ../../../modipsl/bin
  ln -s ../modeles/NEMOGCM/CONFIG/ORCA2_LIM/BLD/bin/nemo.exe nemo.exe
  

• Editing at this point NEMOGCM/CONFIG/ORCA2_LIM/IGCM00/config.card

NOTE : for ada ( idris ) machine starting from revision 2021 of trunk of libigcm it is possible to add in [Post] section of config.card options
[Post]
SpaceName? =PROD (to have IGCM_OUT on gaya)
PackFrequency? =10Y (to have pack option; i.e. only one tar file)

• Editing at this point NEMOGCM/CONFIG/ORCA2_LIM/IGCM00/COMP/opa9.card
• Editing at this point NEMOGCM/CONFIG/ORCA2_LIM/IGCM00/COMP/lim2.card

see : setupsimupage

• Submit Job :
  

   ./util/ins_job
   cd ../CONFIG/ORCA2_LIM/IGCM00 
   llsubmit Job_Name
  

And also see useful remarks: suggestpage

If you want to switch from climatological to interannual see: change_BC

Simona Flavoni last update: Timestamp?