HP XC System 3.x Software - Manual (Page 80)

Specifying the Cluster File Name with the -cluster Option
If the cluster file is not named cluster and is not located in the current working directory, you
must use the -cluster option to specify the name of the cluster file. For example, if the cluster
file name is my_cluster_file, start xclus by entering the following command:
% xclus -cluster my_cluster_file
If you are on an HP XC cluster and the nodes in the cluster file are not in your job allocation, you
must also specify the -unrestricted-nodes option as follows:
% xclus -cluster my_cluster_file -unrestricted-nodes
If you are using xcxclus, you must have superuser capability to specify the
-unrestricted-nodes
option.
Using the xclus Default Cluster File Location
If you are running xclus on a standalone system and do not specify the -nodes or -cluster
option, xclus searches the current working directory for a cluster file named cluster.
80 Using Xtools