This requests an allocation on a compute node of Adroit for 15 minutes. Once granted you can see I'm moved to the compute node adroit-14. I also ask for two tasks (you can adjust based on whether you actually use the cores or not.)
[bhicks@adroit4 ~]$ salloc -N 1 --ntasks-per-node=2 -t 15:00
salloc: Granted job allocation 497989
[bhicks@adroit-14 ~]$ export XDG_RUNTIME_DIR=""