How to run a simple test case with ORCHIDEE

You need following files :

• forcing_file.nc (680M)
• PFTmap.nc (13M)
• soils_param.nc (<1M)
• reftemp.nc (<1M)
• run.def
• executable orchidee_ol

Get the input files :

wget http://dods.extra.cea.fr/work/p86ipsl/IGCM/SRF/METEO/NCC/ncc_for_1982.nc forcing_file.nc
wget http://dods.extra.cea.fr/work/p86ipsl/IGCM/SRF/PFTmap_1850to2005_AR5_LUHa.rc2/PFTmap_IPCC_1982.nc PFTmap.nc
wget http://dods.extra.cea.fr/work/p86ipsl/IGCM/SRF/soils_param.nc
wget http://dods.extra.cea.fr/work/p86ipsl/IGCM/SRF/reftemp.nc

Save following lines into run.def :

# Simulation lenght :
TIME_LENGTH= 365D
#TIME_LENGTH=31D

# Parameters for regional run :
# LIMIT_WEST ([Degrees] ) :  Western limit of region    {[-]}
LIMIT_WEST =  -10.
# LIMIT_EAST ([Degrees] ) :  Eastern limit of region    {[-]}
LIMIT_EAST =  0.
# LIMIT_NORTH ([Degrees]) :  Northern limit of region   {[-]}
LIMIT_NORTH =  10.
# LIMIT_SOUTH ([Degrees]) :  Southern limit of region   {[-]}
LIMIT_SOUTH =  0.

# Parameters for global run :
#LIMIT_WEST = -180.
#LIMIT_EAST =  180.
#LIMIT_NORTH =  90.
#LIMIT_SOUTH = -90.

VEGET_YEAR=1

# Variables for diagnostics :
WRITE_STEP= -1.
SECHIBA_HISTLEVEL= 11
SECHIBA_HISTFILE2= y
SECHIBA_HISTLEVEL2= 1
WRITE_STEP2= 10800.0
STOMATE_OK_CO2= y
STOMATE_OK_STOMATE= y
STOMATE_HIST_DT= -1.
STOMATE_HISTLEVEL= 10
STOMATE_IPCC_HIST_DT= -1.

Check you environment:
To run the model you first need to load the same netcdf library as the one used for the compilation. Check if you already have loaded netcdf and if yes, unload it and load netcdf/4p as follow:

module list
module unload netcdf
module load netcdf/4p

Once you've get all input files, launch the model in the same directory :

./orchidee_ol > out_orchidee_ol 2>&1

Another way to do it from a run you've already finished with libIGCM is to look at the Script_* output file. Inside this file libIGCM lists all the files that it copies to the run directory (look for the commands where the commands IGCM_sys_Cp and IGCM_sys_Get appear in the Script_* file). If you copy those files manually to a new directory, you should be able to launch the exact same simulation.