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The ch_nexus Device

The ch_nexus device uses Nexus for its underlying communication layer and for process management. Nexus is discussed elsewhere [10]. This device is still in a preliminary state, and has so far only been tested in a Solaris environment.

The most interesting use of ch_nexus is that Nexus provides multimethod communication, which can use optimized communication where possible. ch_nexus thus provides an interoperability mechanism to allow MPI to run efficiently on clusters of heterogeneous systems.

Jack Dongarra
Sun Nov 9 14:03:51 EST 1997