[[TOC(heading=Using libIGCM library with ORCA2_LIM nemo_v3_6,  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_6''' =
== Purposes ==
  Through libIGCM give an example of run of configuration ORCA1_LIM3_PISCES with :

 * INTERANNUAL forcing files COREII  (yeras from 1948 to 2009, repeted 3 times)
 * output 1Y for ocean, 1M for ice
 * RESTARTS every year
 * on Idris ADA machine

Official documentation of Libigcm is :

  https://forge.ipsl.jussieu.fr/igcmg_doc/wiki/Doc

== Quick start guide : downloading '''nemo_3_6_STABLE: ''' ==
  https://forge.ipsl.jussieu.fr/nemo/browser/branches/2015/nemo_v3_6_STABLE/NEMOGCM

  default setting of ORCA_LIM3 configuration in NEMO v3_6_STABLE are :

 * '''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,
 * without MONITORING, and ATLAS.

 * Define the following alias to use SVN : [[BR]]
{{{
 alias svn_ano='svn co http://forge.ipsl.jussieu.fr/igcmg/svn/modipsl/trunk modipsl'

}}}
 * Create and go into working directory : [[BR]]
{{{
 mkdir TP-NEMO-libIGCM ; cd TP-NEMO-libIGCM

}}}
 * Extract modipsl (modipsl/libIGCM : the latest revision of tags/libIGCM_v2.6 from repository [http://forge.ipsl.jussieu.fr/libigcm/svn ​http://forge.ipsl.jussieu.fr/libigcm/svn] : )[[BR]]
{{{
 svn_ano
}}}
 * Extract NEMOGCM :   [[BR]]
{{{
cd modipsl/util    **
 ./model NEMO_v6
}}}
   [[BR]]** (verify NEMOGCM revision in '''modipsl/util/mod.def '''file:  (fixed revision of NEMO: 5618)[[BR]]
   * #-H- NEMO_v6  NEMOGCM for CMIP6 exercise [[BR]]#-H- NEMO_v6  libIGCM tag libIGCM_v2.6[[BR]]#-M- NEMO_v6  Christian.Ethe@ipsl.jussieu.fr[[BR]]#-C- NEMO_v6  tags/libIGCM_v2.6                                                                               HEAD     10        libIGCM                    .   [[BR]]#-C- NEMO_v6  branches/2015/nemo_v3_6_STABLE/NEMOGCM                                    ''' 5618  '''     7            .                         modeles[[BR]]#-C- NEMO_v6  CONFIG/UNIFORM/v6/NEMO_v6                                                           HEAD       8        NEMO_v6                 config[[BR]])[[BR]]

 * Choose and compile configuration (for example if you run ORCA1_LIM configuration on "ada" machine at idris) :   '''(ref config??? ORCA2_LIM3_PISCES?????)'''[[BR]]
{{{
 cd ../modeles/NEMOGCM/CONFIG
 ./makenemo -m X64_ADA -n ORCA1_LIM3_PISCES -r ORCA2_LIM3 -j8

 (executable is created in ORCA1_LIM/BLD/bin directory)
}}}

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

 * Editing at this point config/ORCA2_LIM/IGCM00/'''config.card   (according to iodef.xml file)'''

  '''                                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 [[BR]]                       [Post] [[BR]]                       SpaceName                        =PROD   (to have IGCM_OUT on gaya)[[BR]]                        PackFrequency                        =10Y  (to have pack option; i.e. only one tar file)

 * Editing at this point config/ORCA2_LIM/IGCM00/COMP/'''opa9.card'''
 * Editing at this point config/ORCA2_LIM/IGCM00/COMP/'''lim2.card'''

see : [https://forge.ipsl.jussieu.fr/nemo/wiki/libIGCM/setupsimupage setupsimupage]

 * Submit Job : [[BR]]
{{{
cd ../     (back into modipsl directory) 
}}}
{{{
./util/ins_job
 cd ../config/ORCA2_LIM/IGCM00 
 llsubmit Job_Name
}}}

And also see useful remarks: [https://forge.ipsl.jussieu.fr/nemo/wiki/libIGCM/suggestpage suggestpage]

If you want to switch from climatological to interannual see: [https://forge.ipsl.jussieu.fr/nemo/wiki/libIGCM/change_BC change_BC]

  Simona Flavoni last update: [[Timestamp]]