Bad settings in main job at obelix

[jgipsl]

If setting 32MPI in config.card, libIGCM will set in the main job at obelix:

#PBS -l nodes=1:ppn=32

which is not possible. Error message :
qsub: Job exceeds queue resource limits MSG=cannot locate feasible nodes (nodes file is empty or all systems are busy)

Following would be good:

#PBS -l nodes=8:ppn=4

Also for a lower number of cpu, for example 16mpi, which is technically ok to run on one node but it makes the queuing longer, it is better to have

#PBS -l nodes=4:ppn=4

Note: the same problem exist probably at ciclad/climserv

[jgipsl]

In changeset [1391] a message is written to help the user to change the headers for this case. Default setting is still "#PBS -l nodes=1:ppn=32" but with the message written to the screen this is enough to help the user.