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Reducing communication overhead: A parallel code optimization

✍ Scribed by Duane A. Bailey; Janice E. Cuny; Bruce B. MacLeod

Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
872 KB
Volume
4
Category
Article
ISSN
0743-7315

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✦ Synopsis

In highly parallel computation, where a large number of closely coupled processors cooperate on a single task, communication overhead is often the dominant factor in efficiency. We report here on parallel code optimixations designed to reduce this overhead. Our optimizations are targeted for synchronous machines. Because we have found such machines to be difficult to program, we start with a high-level asynchronous code which we automatically convert for synchronous execution before applying our optimixations. Using relatively simple transformations, we are able to demonstrate significant performance improvements for many programs. CB 1987 AU+ demic Press, Inc.

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