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The impact of synchronization and granularity on parallel systems

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3 Author(s)
D. -K. Chen ; Center for Supercomput. Res. & Dev., Illinois Univ., Urbana, IL, USA ; H. -M. Su ; P. -C. Yew

A study is made of the impact of synchronization and granularity on the performance of parallel systems using an execution-driven simulation technique. It is found that, even though there can be a lot of parallelism at the fine-grain level, synchronization and scheduling strategies determine the ultimate performance of the system. Loop-iteration-level parallelism seems to be a more appropriate level when those factors are considered. Barrier synchronization and data synchronization at the loop-iteration level are also studied. It is found that both schemes are needed for a better performance

Published in:

Computer Architecture, 1990. Proceedings., 17th Annual International Symposium on

Date of Conference:

28-31 May 1990