Abstract
Prolog programs have explicit parallelism, that is, parallelism which can be exploited by a machine with minimal user effort. Or-parallelism is one such form of parallelism, and is particularly useful in that it is present in the many Prolog applications where several alternatives need to be considered. Or-parallelism has been exploited successfully in several systems, and especially in the Aurora and Muse systems. In this paper we analyze the portability of these two parallel systems onto a commercial shared memory parallel computer, a Sun SPARCcenter 2000 with 8 processors, running the Solaris 2.2 Operating System. We also analyze both systems' performance for classical benchmark programs and for two large Prolog applications.
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