Hello, 

we would like to understand how the internal SLURM node list order works. More detailed info: 

Our setup: 

We have a Slurm cluster with N dynamic nodes (heterogeneous node types)  in a partition and we observe that if all resources are free, jobs always get submitted to one specific node first. This node is also the node that turns up at the top of the list  when doing an $ scontrol show nodes .  As we do not have a defined node list in slurm.conf as it is done for non-dynamic nodes, we were wondering how the order is set up. 

Interestingly, when deleting (and unregistering) this node from the cluster and re-registering it again, the node is still at the same position when doing scontrol show nodes. 

Is there some internal node list order caching or similar? 
How is the node list order defined ?