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Issue No.01 - January-March (1999 vol.7)
pp: 48-59
In parallel systems, it is possible for several processors to request concurrent access to a shared data structure such as a synchronization variable. Such an access pattern causes what is known as hot-spot contention. In shared-memory multiprocessor systems that use a multistage interconnection network, hot-spot contention can result in "tree saturation" that degrades the system performance. It is important, therefore, to manage hot-spot connection properly. This article reviews the existing strategies to reduce the effects of hot-spot contention. The authors first quantify the effects of hot-spot connection and identify the objectives of a hot-spot management strategy. They propose a taxonomy to categorize these strategies, and then they review and compare several representative strategies that have been proposed to reduce the effects of hot-spot contention.
Sivarama P. Dandamudi, "Reducing Hot-Spot Contention in Shared-Memory Multiprocessor Systems", IEEE Concurrency (out of print), vol.7, no. 1, pp. 48-59, January-March 1999, doi:10.1109/4434.749135
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