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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Hu, J.S. Nadgir, A. Vijaykrishnan, N. Irwin, M.J. Kandemir, M. |
| Copyright Year | 2003 |
| Description | Author affiliation: Dept. of Comput. Sci. & Eng., Pennsylvania State Univ., University Park, PA, USA (Hu, J.S.; Nadgir, A.; Vijaykrishnan, N.; Irwin, M.J.; Kandemir, M.) |
| Abstract | Leakage energy optimization for caches has been the target of much recent effort. In this work, we focus on instruction caches and tailor two techniques that exploit the two major factors that shape the instruction access behavior, namely, hotspot execution and sequentiality. First, we adopt a hotspot detection mechanism by profiling the branch behavior at runtime and utilize this to implement a HotSpot based Leakage Management (HSLM) mechanism. Second, we exploit code sequentiality in implementing a Just-InTime Activation (JITA) that transitions cache lines to active mode just before they are accessed.,We utilize the recently proposed drowsy cache that dynamically scales voltages for leakage reduction and implement various schemes that use different combinations of HSLM and JITA. Our experimental evaluation using the SPEC2000 benchmark suite shows that instruction cache leakage energy consumption can be reduced by 63%, 49% and 29%; on the average, as compared to an unoptimized cache, a recently proposed hardware optimized cache, and a cache optimized using compiler, respectively. Further, we observe that these energy savings can be obtained without a significant impact on performance. |
| Sponsorship | ACM SIGDA IEEE Circuits & Syst. Soc. IEEE Solid-State Circuits Soc. IEEE Electron Devices Soc |
| Starting Page | 402 |
| Ending Page | 407 |
| File Size | 748641 |
| Page Count | 6 |
| File Format | |
| ISBN | 158113682X |
| DOI | 10.1109/LPE.2003.1231936 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2003-08-27 |
| Publisher Place | South Korea |
| Access Restriction | Subscribed |
| Rights Holder | Association for Computing Machinery, Inc. (ACM) |
| Subject Keyword | Leakage current Energy consumption Threshold voltage Energy management Permission Voltage control Turning Engineering management Computer science Power engineering and energy |
| Content Type | Text |
| Resource Type | Article |
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