A cluster based network is used to synchronize multiple view ports in a system with multiple GPUs/machines. A common example of a cluster setup is a CAVE rendered across multiple machines. In addition, clustering supports collaboration between users in different Vizard sessions. For example, two Oculus users or an Oculus and CAVE user. With collaboration, each user can visualize the others and their interactions with the virtual environment.
A local cluster is used to synchronize the output when there is more than one GPU in a single machine. A remote cluster is used to synchronize the output from multiple machines. Collaboration requires a separate machine for each user and a remote cluster.
See Vizard's clustering documentation for information on setting up a cluster.
Note: A standard VizMove Projection system uses a single GPU to render the two walls of a Corner Cave. Unless it's part of a collaboration setup, clustering should not be enabled.