Abstract

This paper presents a new multiprocessor architecture for the parallel execution of logic programs, developed as part of the Aquarius Project. This architecture is designed to support AND-parallelism, OR-parallelism, and intelligent backtracking. We present the most comprehensive experimental results available to date on combined AND-parallelism, OR-parallelism, and intelligent backtracking in Prolog programs. Simulation results indicate that most Prolog programs in use today cannot effectively make use of multiprocessing.

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