[slurm-users] Packing or spreading single-CPU jobs

Hello, I'd like to somehow achieve this: Group A of nodes runs jobs that are supposed to be packed, i.e. if each node has 16 cpus, pack 16 jobs on the first node before using node 2. But for group B, assign every job their own node until all of them have one job, then put a second one on each node until all of them have 2 ... Ir number of jobs doesn't work, load or available memory would do as well, but it seems there's no way of telling slurm to sort the possible nodes by some criteria. Gerhard