Spawning processes belonging to all groups

By default, newly created processes only belong to the primary group for the user ID as defined on the spawning node. To add a process to all groups a user belongs to on the current node, enable this flag using the supplementaryGroups directive or set the configuration flag supplGrps in parastation.conf to true.


Enabling this behavior may trigger extensive network traffic, depending on how the user authentication is configured on the nodes. E.g., using LDAP will open a connection to the LDAP server.

See also parastation.conf(5) and psiadmin(1) for more information.