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2007
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CAP: Criticality analysis for power-efficient speculative multithreading

11 years 5 months ago
CAP: Criticality analysis for power-efficient speculative multithreading
While Speculative Multithreading (SM) on a Chip Multiprocessor (CMP) has the ability to speed-up hard-toparallelize applications, the power inefficiency of aggressive speculation is a concern. To improve SM's power efficiency, we note that not all the tasks that are running in a SM environment are equally critical. To leverage this insight, this paper develops a novel, widely-applicable task-criticality model for SM. It also proposes CAP, a novel architecture that builds a task-criticality graph dynamically and uses it to make scheduling decisions in a SM CMP. Experiments with SPECint, SPECfp, and Olden applications show that, in a CMP with one fast core and three slow ones, the E
James Tuck, Wei Liu, Josep Torrellas
Added 16 Aug 2010
Updated 16 Aug 2010
Type Conference
Year 2007
Where ICCD
Authors James Tuck, Wei Liu, Josep Torrellas
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