中国电子科学研究院学报
中國電子科學研究院學報
중국전자과학연구원학보
JOURNAL OF CHINA ACADEMY OF ELECTRONICS AND INFORMATION TECHNOLOGY
2012年
2期
204-207
,共4页
任务调度%动态电压调节%功耗优化%多核处理器
任務調度%動態電壓調節%功耗優化%多覈處理器
임무조도%동태전압조절%공모우화%다핵처리기
tasks cheduling%dynamic voltage scaling%energy-efficient%multi-core processor
由于关系到系统的安全性及散热代价等方面,能耗问题已经成为嵌入式系统研究的重点。对于多核处理器上具有依赖关系的周期性硬实时任务,设计了一种基于动态电压调节的节能任务调度方法。该方法首先用RDAG算法将任务独立化,然后以功耗最低为原则,采用遗传算法确定任务映射。基于Intel PXA270功耗模型,采用了几个随机任务集进行仿真实验,结果表明该方法比现有的方法节省了20%～30%的能耗。
由于關繫到繫統的安全性及散熱代價等方麵,能耗問題已經成為嵌入式繫統研究的重點。對于多覈處理器上具有依賴關繫的週期性硬實時任務,設計瞭一種基于動態電壓調節的節能任務調度方法。該方法首先用RDAG算法將任務獨立化,然後以功耗最低為原則,採用遺傳算法確定任務映射。基于Intel PXA270功耗模型,採用瞭幾箇隨機任務集進行倣真實驗,結果錶明該方法比現有的方法節省瞭20%～30%的能耗。
유우관계도계통적안전성급산열대개등방면,능모문제이경성위감입식계통연구적중점。대우다핵처리기상구유의뢰관계적주기성경실시임무,설계료일충기우동태전압조절적절능임무조도방법。해방법수선용RDAG산법장임무독립화,연후이공모최저위원칙,채용유전산법학정임무영사。기우Intel PXA270공모모형,채용료궤개수궤임무집진행방진실험,결과표명해방법비현유적방법절성료20%～30%적능모。
Related to the safety of system and the cost of cooling, saving energy has been an important is- sue. For periodic hard real-time tasks with dependence running on multi-core processors, an energy-effi- cient task scheduling approach based on dynamic voltage scaling （DVS） was designed. Based on inde- pendent tasks produced by the RDAG algorithm, the approach took genetic algorithm（GA） to get the opti- mal scheduling. Based on the power model of the Intel PXA270, simulation experiments were conducted with several random task graphs. Results showed that the proposed approach decreased energy effectively.
