Abstract PRET Machines

Abstract PRET Machines
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抽象 PRET 机器

DOI:
10.1109/rtss.2017.00041
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发表时间:
2017
期刊:
2017 IEEE Real-Time Systems Symposium (RTSS)
影响因子:
--
通讯作者:
Michael Zimmer
Michael Zimmer
中科院分区:
--
文献类型:
--
作者:
Edward A. Lee;J. Reineke;Michael Zimmer

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先前的工作表明,有可能设计称为PRET机器的微架构,在不牺牲性能的情况下提供精确和可重复的软件执行时间。先前的工作为PRET微架构提供了具体的设计,并将其与传统设计进行了比较。本文定义了一类称为抽象PRET机(APM)的微架构,捕捉基本的时间属性的PRET机。我们表明,APM提供确定性的时间,没有损失的性能的一个家庭的实时问题组成的零星事件流的最后期限等于期间。另一方面,我们观察到的确定性的时间和能力,以满足零星的事件流的最后期限与约束的期限之间的权衡。
Prior work has shown that it is possible to design microarchitectures called PRET machines that deliver precise and repeatable timing of software execution without sacrificing performance. That prior work provides specific designs for PRET microarchitectures and compares them against conventional designs. This paper defines a class of microarchitectures called abstract PRET machines (APMs) that capture the essential temporal properties of PRET machines. We show that APMs deliver deterministic timing with no loss of performance for a family of real-time problems consisting of sporadic event streams with deadlines equal to periods. On the other hand, we observe a tradeoff between deterministic timing and the ability to meet deadlines for sporadic event streams with constrained deadlines.
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