Metasystems: An approach combining parallel processing and heterogeneous distributed computing systems

Andrew S. Grimshaw, Jon B. Weissman, Emyly A. West, Ed C. Loyot

Research output: Contribution to journalArticlepeer-review

46 Scopus citations


A metasystem is a single computing resource composed of a heterogeneous group of autonomous computers linked together by a network. The interconnection network needed to construct large metasystems will soon be in place. To fully exploit these new systems, software that is easy to use, supports large degrees of parallelism, and hides the complexity of the underlying physical architecture must be developed. In this paper we describe our metasystem vision, our approach to constructing a metasystem testbed, and early experimental results. Our approach combines features from earlier work on both parallel processing systems and heterogeneous distributed computing systems. Using the testbed, we have found that data coercion costs are not a serious obstacle to high performance, but that load imbalance induced by differing processor capabilities can limit performance. We then present a mechanism to overcome load imbalance that utilizes user-provided callbacks.

Original languageEnglish (US)
Pages (from-to)257-270
Number of pages14
JournalJournal of Parallel and Distributed Computing
Issue number3
StatePublished - Jun 1994


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