node management in dlg create CLI is unclear

[alxndrwllmsn]

The default for option -n/--num-nodes is 3. This can cause an index error if the job submission script template defines a number of tasks (requested from Slurm) less than this.

The disconnect between these values is a problem as it would be expected that you only need to set this once. Perhaps there needs to be a check for equivalence between the -n CLI flag and the --ntasks/(--ntasks-per-node*--nodes) slurm parameters, or it needs to be a required parameter at CLI.