Due to several bugs in the queuing  system, affecting mostly OpenMP jobs,  the nodes and the ppn directives are deprecated.

The new way of submitting OpenMP jobs is covered on the HPC docs site, available here: 

https://docs.hpc.uib.no/wiki/Job_execution_(Hexagon)#Parallel.2FOpenMP_jobs.

Have you any question on how to change your script please contact us.