What are MOAB and SLURM?
MOAB is the batch job scheduler that decides which jobs should run next. SLURM is the Resource Manager that allocates compute nodes upon request. Together they submit the jobs, select the most suitable hosts, and interact with the individual tasks of parallel batch jobs. A batch job is submitted to a queue by using the sbatch command. The batch system then attends to all of the details associated with running it. A batch job may not run immediately after being submitted if the resources it needs (usually compute nodes) are not available. The job will wait until it reaches the front of the queue and the resources become available. At that time the batch job will be dispatched to the most suitable host or hosts available for execution.
