Dear Gregor and Uliana,

It was indeed a matter of correctly communicating the number of OMP_NUM_THREADS to the cluster - I was used to another usage of sbatch and was communicating it in the wrong way.

In calculations without SOC the convergence was rather quick and raised my hopes. With the optimized setup the SOC calculation does 1 SCF iteration every 3 minutes, which is good!

As always, thanks for the fast advice.

Best,

Adriano