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Dynamic program phase detection in distributed shared-memory multiprocessors
Ipek, E.; Martinez, J.F.; de Supinski, B.R.; McKee, S.A.; Schulz, M.;
Parallel and Distributed Processing Symposium, 2006. IPDPS 2006. 20th International
25-29 April 2006
Page(s):4 pp.
Abstract:
We present a novel hardware mechanism for dynamic program phase detection in distributed shared-memory (DSM) multiprocessors. We show that successful hardware mechanisms for phase detection in uniprocessors do not necessarily work well in DSM systems, since they lack the ability to incorporate the parallel application's global execution information and memory access behavior based on data distribution. We then propose a hardware extension to a well-known uniprocessor mechanism that significantly improves phase detection in the context of DSM multiprocessors. The resulting mechanism is modest in size and complexity, and is transparent to the parallel application.
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