Xcpu is a cluster management system using the 9P distributed fs protocol. Xcpu clusters consist of control nodes and compute nodes. There can be more than one control node in an xcpu cluster. Xcpu removes all of the old bproc restrictions on compute node types. Compute nodes need no special kernel modifications; control nodes, for now, must run Linux, and must be compiled with v9fs enable, available in Linux 2.6.14 or later. Work is proceeding, however, on a MacOS X port of v9fs. Xcpu makes the same basic operations and cluster model available to programs and users as bproc does, with one or two changes. The xcpu implementation is far different, however, relying completely on standard kernel subsystems, and requiring no patches.
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