Title | ||
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Fine-Grained Run-Tume Power Gating Through Co-Optimization Of Circuit, Architecture, And System Software Design |
Abstract | ||
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Power consumption has recently emerged as a first class design constraint in system LSI designs. Specially, leakage power has occupied a large part of the total power consumption. Therefore, reduction of leakage power is indispensable for efficient design of high-performance system LSIs. Since 2006, we have carried out a research project called "Innovative Power Control for Ultra Low-Power and High-Performance System LSIs", supported by Japan Science and Technology Agency as a CREST research program. One of the major objectives of this project is reducing the leakage power consumption of system LSIs by innovative power control through tight cooperation and co-optimization of circuit technology, architecture, and system software designs. In this project, we focused on power gating as a circuit technique for reducing leakage power. Temporal granularity is one of the most important issue in power gating. Thus, we have developed a series of Geysers as proof-of-concept CPUs which provide several mechanisms of fine-grained run-time power gating. In this paper, we describe their concept and design, and explain why co-optimization of different design layers are important. Then, three kinds of power gating implementations and their evaluation are presented from the view point of power saving and temporal granularity. |
Year | DOI | Venue |
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2013 | 10.1587/transele.E96.C.404 | IEICE TRANSACTIONS ON ELECTRONICS |
Keywords | Field | DocType |
low-power circuit techniques, fine grained power-gating, compiler, system hierarchy cooperation | System software,Computer architecture,Computer science,Compiler,Power gating,Circuit architecture | Journal |
Volume | Issue | ISSN |
E96C | 4 | 1745-1353 |
Citations | PageRank | References |
0 | 0.34 | 10 |
Authors | ||
7 |
Name | Order | Citations | PageRank |
---|---|---|---|
Hiroshi Nakamura | 1 | 54 | 7.39 |
Weihan Wang | 2 | 19 | 6.08 |
Yuya Ohta | 3 | 2 | 0.72 |
Kimiyoshi Usami | 4 | 528 | 75.61 |
Hideharu Amano | 5 | 1375 | 210.21 |
Masaaki Kondo | 6 | 0 | 0.34 |
Mitaro Namiki | 7 | 97 | 20.69 |