>> EXAMPLES FOR OCCIGEN CLUSTER
Job "run_month1" runs a simulation for month #1 and then possibly launches
a job "run_month2" which runs a simulation for month #2 which then possibly
launches a job "run_month3" etc.

OMP : in "run_month1" the number denoted A, B and C should be choose according
to these rules : 
_ AxB = number of MPI threads should be .LE. to #lat/2
_ C = number of OMP tasks should be .LE. to #lev/10
_ BxC compatible to the node specification (ex; here BDW28 so .LT. 28 )
_ Be carefull to change the line "export OMP_NUM_THREADS=" to the correct number C

The starting and ending months of the simulation can be set in "run_month1"
One should adapt the script (and underlying "run0" and "run.def.ref") to
match their needs.