== '''Set up a simulation''' ==  
[[BR]]

[[PageOutline]]
   
    '''First of all see official documentation'''

 http://forge.ipsl.jussieu.fr/libigcm/wiki/

 === How to manage restart files ( in the same simulation ) ===
 
 In modipsl/config/ORCA2_LIM/IGCM00/'''config.card''' [[BR]]
 file you have to set duration of your experience and setting '''!PeriodLength''' parameter, so you create restart files.

 ( for example : if you have and experience of 10 years and a !PeriodLength of 1 year, you will have 10 restart files )

 #-- Début et fin de Job [[BR]]
 #-- "YYYY-MM-DD" [[BR]]
 DateBegin=2001-01-01 [[BR]]
 DateEnd=2010-12-31 [[BR]]
 #============================ [[BR]]
 #-- 1Y, 1M, 5D, 1D [[BR]]
 PeriodLength=1Y [[BR]]

 '''Note : ''' If you want to use restart data from another simulation ( already run not in this moment ) you have to manage "Restarts" part of config.card
 For example if you want to restart from restart file of experience core260i (corersponding at the Job_core260i) of the year 2007 you have to put:  

 #================ [[BR]]
 #D-- Restarts -[[BR]]
 [Restarts]
 #D- If you want a GENERAL RULE FOR RESTARTS, put this flag to 'y'
 OverRule=y
 #D- Last day of the experience used as restart
 RestartDate=2007-12-31
 #D- Define restart simulation name
 RestartJobName=core260i
 #D- Path Server Group Login
 RestartPath=${ARCHIVE}/IGCM_OUT/ORCA2_LIM2


 === How to have mail of end of Job, on ccrt's machines ===

 on mercure: in Job_Name: #PBS -M name@mail [[BR]]
 on platine: In Job_Name: #BSUB -u name@mail 

 === How to manage write output frequency ===

 in modipsl/config/ORCA2_LIM/IGCM00/config.card you have to set !WriteFrequency of your experience 
 
 for example : if you want output files every 1 month you have to put for Ocean. [[BR]]

 You can have multiple frequencies, you need to have a blank between every frequency

 #=================== [[BR]]
 #D-- OCE - [[BR]]
 [OCE] [[BR]]
 WriteFrequency="1Y 1M"
 
 and if you want output files every 1 month you have to put for ICE 

 #=================== [[BR]]
 #D-- ICE - [[BR]]
 [ICE] [[BR]]
 WriteFrequency="1M"
 


 === How to manage calendar type ===

 in modipsl/config/ORCA2_LIM/IGCM00/config.card you have to set !CalendarType  like 360d or leap or noleap 

 # for '''360d''' :
 
 you have to be careful at

 DateEnd=2010-12-3'''0''' [[BR]]

 because every month has 30 days 

 If you put for example DateEnd=2005-12-31, you will have another run, of duration like your !PeriodLength 
 
 # for '''noleap''' :
  
 '''How to manage rdt ( i.e. timestep )'''
 
 in modipsl/config/ORCA2_LIM/IGCM00/COMP/nemo.driver you have to change parameter : ORCA_NPDT_JOUR=15

 ( 15 corresponds to 86400s/5760s; it does mean that in one day you have 15 iterations; and it does mean that timestep is 5760)

 === How to manage Interannual or Climatological Runs ===
 ==== in modipsl/config/ORCA2_LIM/IGCM00/COMP/'''opa9.card''' ) ====

 You have to set 

 # Interannual_Run '''y''' if you want to do interannual runs or '''n''' if you want to do climatological runs  
 
 # In [Interannual] section you have to fill List_jobsbc of file names like they appear in namelist.  [[BR]]
 ( for example if you want to do interannual run using clio bulk core you can put :  [[BR]]
  List_jobsbc=(flx, taux_1m, tauy_1m) 
 )

 
 === How to manage Interannual or Climatological Runs ===
 ==== in modipsl/config/ORCA2_LIM/IGCM00/PARAM/'''namelist''' ====
 
 You have to set in "namsbc" part if you want to do climatological run and if you want to do an interpolation : [[BR]] 
 '''time interpol.''' (logical) and '''clim''' (T/F)  

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

 Simona Flavoni last update:  [[Timestamp]]