system) fields. These fields are set based upon values reported by the
    slurmd daemon on each compute node using SLURM_ARCH and SLURM_OS environment
    variables (if set, the uname function otherwise) and are intended to support
    changes in real time changes in operating system. These values are reported
    by "scontrol show node" plus the sched/wiki and sched/wiki2 plugins for Maui
    and Moab respectively.

Change hostname logic to use uname() rather than gethostname() and permit
    hostnames to contain ".".

and use that for enforcement

Add job and task memory limits to job step credential
Add enforcement of job and task memory limits to job accounting and 
  abort job that exceeds the limit

    sbatch commands.

a job immediately

processing

attempt to backfill on dedicated nodes before using shared nodes
   (if sharing is supported by job/partition)