Proceedings of the 2004 International Symposium on Low Power Electronics and Design (IEEE Cat. No.04TH8758)最新文献

筛选

英文中文

SEPAS: A highly accurate energy-efficient branch predictor SEPAS:一个高度精确的节能分支预测器

Proceedings of the 2004 International Symposium on Low Power Electronics and Design (IEEE Cat. No.04TH8758) Pub Date : 2004-08-09 DOI: 10.1145/1013235.1013250

A. Baniasadi, Andreas Moshovos

{"title":"SEPAS: A highly accurate energy-efficient branch predictor","authors":"A. Baniasadi, Andreas Moshovos","doi":"10.1145/1013235.1013250","DOIUrl":"https://doi.org/10.1145/1013235.1013250","url":null,"abstract":"Designers have invested much effort in developing accurate branch predictors with short learning periods. Such techniques rely on exploiting complex and relatively large structures. Although exploiting such structures is necessary to achieve high accuracy and fast learning, once the short learning phase is over, a simple structure can efficiently predict the branch outcome for the majority of branches. Moreover, for a large number of branches, once the branch reaches the steady state phase, updating the branch predictor unit is unnecessary since there is already enough information available to the predictor to predict the branch outcome accurately. Therefore, aggressive usage of complex large branch predictors appears to be inefficient since it results in unnecessary energy consumption. In this work we introduce Selective Predictor Access (SEPAS) to exploit this design inefficiency. SEPAS uses a simple power efficient structure to identify well behaved branch instructions that are in their steady state phase. Once such branches are identified, the predictor is no longer accessed to predict their outcome or to update the associated data. We show that it is possible to reduce the number of predictor accesses and energy consumption considerably with a negligible performance loss (worst case 0.25%).","PeriodicalId":120002,"journal":{"name":"Proceedings of the 2004 International Symposium on Low Power Electronics and Design (IEEE Cat. No.04TH8758)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123629961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 30

Low-power asynchronous Viterbi decoder for wireless applications 用于无线应用的低功耗异步维特比解码器

Proceedings of the 2004 International Symposium on Low Power Electronics and Design (IEEE Cat. No.04TH8758) Pub Date : 2004-08-09 DOI: 10.1145/1013235.1013306

Mohamed Kawokgy, C. Salama

引用次数: 31

Constant-load energy recovery memory for efficient high-speed operation 恒负载能量恢复存储器，高效高速运行

Proceedings of the 2004 International Symposium on Low Power Electronics and Design (IEEE Cat. No.04TH8758) Pub Date : 2004-08-09 DOI: 10.1145/1013235.1013296

Joohee Kim, M. Papaefthymiou

引用次数: 7

首页上一页