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A Distributed Shared Memory Facility for FreeBSD

Pedro Souto and Eugene W. Stark
Department of Computer Science, State University of New York at Stony Brook, Stony Brook, NY 11794 USA


This paper describes the design and implementation of a distributed shared memory facility we have implemented for the FreeBSD operating system (a descendant of 4.4BSD that runs on the PC architecture). Interesting aspects of the design are: (1) the consistency protocol uses unreliable datagram communication, but is robust with respect to message loss, and in the normal case requires only two datagrams to handle a read fault; (2) the facility provides a simple programming interface that does not require any socket or network programming to use; (3) the facility extends the FreeBSD VM system in a very non-intrusive way.
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Last changed: 22 Apr 2002 ml
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