计算机科学与探索2017，Vol.11Issue(8)：1224-1234,11.DOI:10.3778/j.issn.1673-9418.1701043
多核共享资源冲突延迟上限优化方法
Optimization of Upper Bound of Interference Delay in Multicore
摘要
Abstract
The inter-task interferences on the shared resources of embedded multicore are the difficulty for the WCET (worst-case execution time) estimation of hard real-time tasks. Moreover, the decrease of the delay caused by the interferences on the shared resources can reduce the estimated WCET and improve the schedulability of hard real-time tasks. This paper proposes an optimization method to reduce the upper bound of inter-task interference delay in the multicore with interference-aware bus arbiter (IABA). According to the relationship between the upper bound of inter-task interference delay and the count of bank conflict, this paper optimizes bank to core mapping to reduce the count of bank conflict, and then reduces the upper bound of inter-task interference delay and the estimated WCET. Compared with existing methods, the proposed method can reduce about 29%of the estimated WCET.关键词
多核结构/硬实时任务/bank冲突/bank-column划分/bank到核映射Key words
multicore/hard real-time task/bank conflict/bank-column partitioning/bank to core mapping分类
信息技术与安全科学引用本文复制引用
张吉赞,苑雅娟..多核共享资源冲突延迟上限优化方法[J].计算机科学与探索,2017,11(8):1224-1234,11.基金项目
The National Natural Science Foundation of China under Grant No. 61370062 (国家自然科学基金). （国家自然科学基金）
