[[TOC(heading=Using libIGCM library with ORCA2_LIM ,depth=2, private/libIGCM/setupsimupage, private/libIGCM/change_BC, private/libIGCM/common_account, private/libIGCM/postprocessingpage, private/libIGCM/postalreadyrunpage, private/libIGCM/parallelpage, private/libIGCM/common_account, private/libIGCM/tree_IGCM00, private/libIGCM/errorpage, private/libIGCM/suggestpage, private/libIGCM/resol_ORCA2, private/libIGCM/donepage, private/libIGCM/todolistpage, private/libIGCM/iom_put, private/libIGCM/changepage, private/libIGCM/appendixpage )]]

= '''Using libIGCM library with ORCA2_LIM''' =
[[BR]]

== Purposes: ==

[[BR]]

    * Document the using of libIGCM for NEMO, in configuration ORCA2_LIM 


    * Official documentation of libIGCM is :
    
      http://forge.ipsl.jussieu.fr/libigcm/wiki/WikiStart

[[BR]]
[[BR]]

== Quick start guide: ==

 30/10/2009 at this moment when downloading NEMO_IGCM default configuration is:  [[BR]]
 climatological run, with bulk clio forcing, with calendar type 360d and output frequency 1Y, without iom_put, with MONITORING, and ATLAS.
 
 At the bottom of this page informations to switch 
 1. interannual run, with bulk core forcing, with calendar type noleap and output frequency 1M, without iom_put, with MONITORING, and ATLAS.
 2. activate iom_put

[[BR]]

    * 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 TRY ; cd TRY
}}}
    * Extract modipsl : [[BR]]
{{{
 svn_ano 
}}}
    * Extract NEMO : [[BR]]
{{{
 cd modipsl/util 
 ./model NEMO_IGCM 
}}}
    * Choosing ORCA2_LIM configuration : [[BR]]
{{{
 cd ../modeles/UTIL
 ./fait_config ORCA2_LIM
}}}
'''NOTE: in this moment NEMO_IGCM is downloading trunk NEMO (ongoing test on iom_put)''' but there is a bug on bottom friction. [[BR]]
To evoid this bug it is necessary to:  [[BR]]
1. comment lines in modipsl/modeles/NEMO/WORK/dommsk.F90: [[BR]]
         ij0 = 115   ;   ij1 = 115 [[BR]]
         ii0 = 145   ;   ii1 = 146   ;   fmask( mi0(ii0):mi1(ii1) , mj0(ij0):mj1(ij1) , 1:jpk ) = 4.0e0 [[BR]]
         ij0 = 116   ;   ij1 = 116 [[BR]]
         ii0 = 145   ;   ii1 = 146   ;   fmask( mi0(ii0):mi1(ii1) , mj0(ij0):mj1(ij1) , 1:jpk ) = 4.0e0 [[BR]]
2. put in namelist  rn_bfri1    =    0.e-4 [[BR]]
    * Install the makefiles : [[BR]]
{{{
 cd ../../util 
 ./ins_make
}}}
    * Compile : [[BR]]
{{{
 cd ../config/ORCA2_LIM 
 gmake
}}}
    * Submit Job : [[BR]]
{{{

 ( Editing at this point modipsl/config/ORCA2_LIM/IGCM00/config.card 
   Editing at this point modipsl/config/ORCA2_LIM/IGCM00/COMP/opa9.card )

 ../../util/ins_job
 cd IGCM00 
 qsub Job_Name
}}}

'''[[Color( red, IMPORTANT REMARK: )]] [[BR]]
 To reduce computing time, if you don't use the ATLAS, you can put in namelist : '''ln_mskland=.false.''', because it is very expensive in term of computational time.'''

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

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

To activate iom_put see: [https://forge.ipsl.jussieu.fr/nemo/wiki/private/libIGCM/iom_put]


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 Simona Flavoni last update:  [[Timestamp]]