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- W2129542184 abstract "Under current worst-case design practices, manufacturers specify conservative values for processor frequencies in order to guarantee correctness. To recover some of the lost performance and improve single-thread performance, this paper presents the Paceline leader-checker microarchitecture. In Paceline, a leader core runs the thread at higher-than-rated frequency, while passing execution hints and prefetches to a safely-clocked checker core in the same chip multiprocessor. The checker redundantly executes the thread faster than without the leader, while checking the results to guarantee correctness. Leader and checker cores periodically swap functionality. The result is that the thread improves performance substantially without significantly increasing the power density or the hardware design complexity of the chip. By overclocking the leader by 30%, we estimate that Paceline improves SPECint and SPECfp performance by a geometric mean of 21% and 9%, respectively. Moreover, Paceline also provides tolerance to transient faults such as soft errors." @default.
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- W2129542184 date "2007-09-15" @default.
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- W2129542184 title "Paceline: Improving Single-Thread Performance in Nanoscale CMPs through Core Overclocking" @default.
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- W2129542184 doi "https://doi.org/10.1109/pact.2007.52" @default.
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