Introduction

It is possible to request exclusive access to a node so that you will not share it with anyone else regardless of how many processors you need on that node. This might be important for memory or disk intensive jobs where interference from other jobs would impact performance.  Please note:  Newer compute nodes in the NOTS cluster have considerably more resources than older nodes; for example the new "sapphirerapids" compute nodes have 96 physical cores and 512 GB of RAM.  Users who request exclusive use of one of these more powerful nodes should be sure that their code can utilize the full capacity of a given node, and should be aware that they will be charged for the full capacity of the node even if it is unused.  NOTS node specifications can be found here: CRC NOTS Description. 

Requesting Exclusive Access

Use the following lines in your SLURM batch script:

This combination of options will give the user one node and will have exclusive access to the entire node.