D. Ikebuchi, N. Seki, Y. Kojima, M. Kamata, L. Zhao, H. Amano, T. Shirai, S. Koyama, T. Hashida, Y. Umahashi, H. Masuda, K. Usami, S. Takeda, H. Nakamura, M. Namiki, M. Kondo
{"title":"Geyser-1: A MIPS R3000 CPU core with fine grain runtime power gating","authors":"D. Ikebuchi, N. Seki, Y. Kojima, M. Kamata, L. Zhao, H. Amano, T. Shirai, S. Koyama, T. Hashida, Y. Umahashi, H. Masuda, K. Usami, S. Takeda, H. Nakamura, M. Namiki, M. Kondo","doi":"10.1109/ASSCC.2009.5357257","DOIUrl":null,"url":null,"abstract":"Geyser-1, a prototype MIPS R3000 CPU with fine grain runtime PG for major computational components in the execution stage is available. Function units such as CLU, shifter, multiplier and divider are power-gated and controlled at runtime such that only the function unit to be used is powered-on to minimize the leakage power. The evaluation results on the real chip reveals that the fine grain runtime PG mechanism works without electric problems. It reduces the leakage power 7% at 25 °C and 24% at 80°C. The evaluation results using benchmark programs show that the power consumption can be reduced from 3% at 25 °C and 30% at 80°C.","PeriodicalId":263023,"journal":{"name":"2009 IEEE Asian Solid-State Circuits Conference","volume":"6 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2009-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"40","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2009 IEEE Asian Solid-State Circuits Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ASSCC.2009.5357257","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 40
Abstract
Geyser-1, a prototype MIPS R3000 CPU with fine grain runtime PG for major computational components in the execution stage is available. Function units such as CLU, shifter, multiplier and divider are power-gated and controlled at runtime such that only the function unit to be used is powered-on to minimize the leakage power. The evaluation results on the real chip reveals that the fine grain runtime PG mechanism works without electric problems. It reduces the leakage power 7% at 25 °C and 24% at 80°C. The evaluation results using benchmark programs show that the power consumption can be reduced from 3% at 25 °C and 30% at 80°C.
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