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ANSWER: CHTC doesn't do any cleaning of shared directories. But the suggested looking at https://derekweitzel.com/2016/03/22/fedora-copr-slurm-per-job-tmp/ I don't know if this plugin will clean files created by an interactive ssh, but i suspect it won't because it is a slurm plugin and ssh'ing to the host is outside of the control of Slurm except for the pam_slurm_adopt that adds you to the cgroup. So I may still need a reaper or tmpwatch script to keep these directories clean.
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