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Proceedings of the 22nd International Conference on Parallel Architectures and Compilation Techniques (1998)
Paris, France
Oct. 12, 1998 to Oct. 18, 1998
ISSN: 1089-795X
ISBN: 0-8186-8591-3
pp: 30
Gheith A. Abandah , University of Jordan
Edward S. Davidson , University of Michigan
ABSTRACT
The SGI Origin 2000 is designed to support a wide range of applications and has low local and remote memory latencies. However, it often has a high ratio of remote to local misses. In this paper, we evaluate the Origin 2000 performance with communication intensive applications. We use detailed execution-driven simulation of six shared-memory applications. This paper evaluates a base, Origin 2000-like system and three derived systems that incorporate techniques to reduce the communication cost by lowering the ratio of remote misses. We show that the performance of these applications is generally improved when the local bus is used in the snoopy mode, the number of processors per node is increased, the processors use the Illinois cache coherence protocol, or when adding a snoopy cache to retain remote data within each node. Illinois protocol and the interconnect cache reduce the average remote miss ratio by 16% and 21%, respectively.
INDEX TERMS
CC-NUMA, SGI Origin 2000, communication performance, performance evaluation, execution-driven simulation.
CITATION
Gheith A. Abandah, Edward S. Davidson, "Origin 2000 Design Enhancements for Communication Intensive Applications", Proceedings of the 22nd International Conference on Parallel Architectures and Compilation Techniques, vol. 00, no. , pp. 30, 1998, doi:10.1109/PACT.1998.727141
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