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Published Articles >> Table of Contents >> Abstract
10th International Symposium on High Performance Computer Architecture (HPCA'04)
p. 24
Program Counter Based Techniques for Dynamic Power Management
Chris Gniady, Purdue University
Y Charlie Hu, Purdue University
Yung-Hsiang Lu, Purdue University
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DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/HPCA.2004.10021
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Reducing energy consumption has become one of the major challenges in designing future computing systems. This paper proposes a novel idea of using program counters to predict I/O activities in the operating system. The paper presents a complete design of Program-Counter Access Predictor (PCAP) that dynamically learns the access patterns of applications and predicts when an I/O device can be shut down to save energy. PCAP uses path-based correlation to observe a particular sequence of program counters leading to each idle period, and predicts future occurrences of that idle period. PCAP differs from previously proposed shutdown predictors in its ability to: (1) correlate I/O operations to particular behavior of the applications and users, (2) carry prediction information across multiple executions of the applications, and (3) attain better energy savings while incurring low mispredictions.
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 Additional Information
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Citation:
Chris Gniady, Y Charlie Hu, Yung-Hsiang Lu,
"Program Counter Based Techniques for Dynamic Power Management,"
hpca,
p. 24,
10th International Symposium on High Performance Computer Architecture (HPCA'04),
2004
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