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To verify if and how the cleaning procedure is active on a given cluster, check the Mott-of-the-Day.
$TMPDIR: temporary, user specific, local
Each compute node is equipped with a local storage which dimension differs depending on the cluster (please look at the specific page of the cluster for more details).
When a job starts, a temporary area is defined on the storage local to each compute node:
TMPDIR=/scratch_local/slurm_job.$SLURM_JOB_ID
which can be used exclusively by the job's owner. During your jobs, you can access the area with the (local) variable $TMPDIR. In your sbatch script, for example, you can move the input data of your simulations to the $TMPDIR before the beginning of your run and also write on $TMPDIR your results. This would further improve the I/O speed of your code.
However, the directory is removed at the end of the job, hence always remember to save the data stored in such area to a permanent directory in your sbatch script at the end of the run. Please note that the area is located on local disks, so it can be accessed only by the processes running on the specific node. For multinode jobs, if you need all the processes to access some data, please use the shared filesystems $HOME, $WORK, $CINECA_SCRATCH.
$DRES: permanent, shared (among platforms and projects)
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