Zhigang Hu, Philo Juang, Kevin Skadron, Doug Clark, Margaret Martonosi  Home/Search
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Abstract: This paper shows that substantial reductions in leakage energy can be obtained by deactivating groups of branch-predictor entries if they lie idle for a sufficiently long time. Decay techniques, first introduced by Kaxiras et al. for caches, work by tracking accesses to cache lines and turning off power to those that lie idle for a sufficiently long period of time (the decay interval). Once deactivated, these lines essentially draw no leakage current. The key trick is in identifying... (Update)
Context of citations to this paper: More
.... Aside from the memory system, we also show how to apply the timekeeping methodology to other structures, such as branch predictors [30, 31, 32]. With large array structures similar to caches, branch predictors are natural candidates for applying cache decay strategies. A...
...for a long time should be shut off because they tend to contain data that is not likely to be used again before replacement. Hu et al. [6] applied decay strategies to branch predictors. These techniques use counters to gauge how long cache lines have been idle. Counterbased...
Cited by: More
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BibTeX entry: (Update)
Z. Hu et al. Applying Decay Strategies to Branch Predictors for Leakage Energy Savings. In ICCD, Sep. 2002. http://citeseer.ist.psu.edu/article/hu01applying.html More
@techreport{ hu01applying,
author = "Zhigang Hu and Philo Juang and Kevin Skadron and Douglas W. Clark and Margaret Martonosi",
title = "Applying Decay Strategies to Branch Predictors for Leakage Energy Savings",
number = "CS-2001-24",
year = "2001",
url = "citeseer.ist.psu.edu/article/hu01applying.html" }
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