It is a dedicated master node with no worker.
SLURM jobs are submitted to workers.
The only workloads that it experiences are the master forced ones like imports and interactive jobs (e.g. curate exposures and select 2D classes).
But as mentioned in another thread:
https://discuss.cryosparc.com/t/issues-with-login-on-the-cs-webinterface-for-some-users/7736/11
It is a rather big install, with MongoDB at +550GB and +20 simultaneous users.