Check out a set of nodes on cluster compute systems for interactive use … (Tips & Tricks)

Did You Know that it is possible to check out a set of nodes on cluster compute systems for interactive use? This is often times useful when working to debug large models before you are ready to submit them for a long running batch simulation. For example, on systems which use PBS (such as the SMC machine), you can use the following command to reserve
24 cores that are spread across 2 nodes of the cluster for 1 hour of interactive use:
> qsub -I -l nodes=2:ppn=12 -l walltime=00:60:00 -N channel -q acusim
the recommended syntax if you are using PBS Professional 9.0 and later:
qsub -I -l select=2:ncpus=12 -l place=scatter -l walltime=00:60:00 -N channel -q aqusim
Once the scheduler grants the resources, acuSolve can be executed using the following command:
> acuRun -pbs -pb channel
Note that this same approach can be used with other schedulers as well (SGE, LSF, slurm, etc.) (April 9, 2013)

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