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As an alternative to message passing, Rochester's InterWeave system allows the programmer to map shared segments into programs spread across heterogeneous, distributed machines. InterWeave represents a merger and extension of the previous Cashmere and InterAct projects, combining hardware coherence within small multiprocessors, Cashmere-style lazy release consistency within tightly coupled clusters, and InterAct-style version-based consistency for distributed shared segments. In this paper each shared segment evolves through a series of consistent versions. When beginning a read-only critical section on a given segment, Inter-Weave uses a programmer-specified predicate to determine whether the currently cached version, if any, is "recent enough" to use. Inter-segment consistency is maintained by means of hashed vector timestamps.

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Format:PDFSize:109 KB
Date:Jan 2008
Pages:14

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