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Highly parallel execution of production systems: A model, algorithms and architecture

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Abstract

This paper presents a new parallel processing scheme called DYNAMIC-JOIN for OPS5-like production systems along with associated parallel algorithms, a parallel architecture and simulation results from a number of production systems. The main motivation behind DYNAMIC-JOIN is to reduce the variations in the processing time requirements and improve limited production level parallelism. For this, the model employs some redundancy that allows the processing of a production to be divided into units of small granularity each of which can be processed in parallel. As a consequence in addition to production level parallelism where a set of relevant productions are processed in parallel, a second level of parallelism can be exploited.

After a detailed description of the model proposed, the paper presents algorithms for processing productions with DYNAMIC-JOIN, along with a discussion of various issues and possible disadvantages. Subsequently, the paper presents a parallel processor architecture that can implement DYNAMIC-JOIN, along with simulation results from real production systems.

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Authors and Affiliations

  1. Department of Computer Engineering and Information Sciences, Bilkent University, Bilkent, 06533, Ankara, Turkey

    Kemal Oflazer

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  1. Kemal Oflazer
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Additional information

This work was done as a part of the author’s doctoral thesis at Carnegie Mellon University, Pittsburgh, PA 15213, U.S.A. It was supported in part by the Defense Advanced Research Projects Agency (DoD), ARPA Order No. 3597, monitored by the Air Force Avionics Laboratory under Contract F33615-81-K-1539. The views and conclusions contained in this document are those of the author and should not be interpreted as representing the official policies, either expressed or implied, of the Defense Advanced Research Projects Agency, or the United States Government.

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Oflazer, K. Highly parallel execution of production systems: A model, algorithms and architecture. New Gener Comput 10, 287–313 (1992). https://doi.org/10.1007/BF03037940

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  • DOI: https://doi.org/10.1007/BF03037940

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