slurm.conf notes and updates

[middelkoopt]

It is not clear from the the instructions that the node names much match (c1-c4), the hardware must match, and a scontrol reconfigure must be run for SLRUM to see the changes. This was difficult for me as I have not touched SLURM in quite some time. I ended up doing the following to clear out the node definitions, I am not sure if slurmd can now auto-detect some of these.

perl -pi -e 's/^NodeName=c\[1-4\].*$/NodeName=c[1-4] State=UNKNOWN/' /etc/slurm/slurm.conf