In our configuration both cores and memory are consumable resources, meaning that slurm keeps track of how many cores and how much memory has been allocated to jobs on each node. A node is considered full if either all the cores are allocated, or all the memory is allocated.

By default, each job is allocated 1 core and 8GB of memory per core (so 8GB total since the default is 1 core).

You can change your allocation from the default using the -c = –cpus-per-task, –exclusive, –mem, and –mem-per-cpu options.

In the man pages, generally, CPU==core because of this configuration choice. For example, the -c option mentioned above has full name –cpus-per-task but really means cores per task in our configuration.