Hi Sergii, The ducc_runtime tree needs to be installed on a shared filesystem that all DUCC nodes have mounted in the same location. Just install the ducc runtime once from the DUCC head node. All other DUCC nodes simply need to have the mounted filesystem and common user accounts with identical user and group IDs.
An NFS shared filesystem as you describe would be fine, and the same filesystem could be used for providing shared user space, typically the users home directories. Eddie
