文章基本信息

标题：Hiding Communication Delays in Contention-Free Execution for SPM-Based Multi-Core Architectures
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作者：Benjamin Rouxel ; Stefanos Skalistis ; Steven Derrien 等
期刊名称：LIPIcs : Leibniz International Proceedings in Informatics
电子版ISSN：1868-8969
出版年度：2019
卷号：133
页码：1-24
DOI：10.4230/LIPIcs.ECRTS.2019.25
出版社：Schloss Dagstuhl -- Leibniz-Zentrum fuer Informatik
摘要：Multi-core systems using ScratchPad Memories (SPMs) are attractive architectures for executing time-critical embedded applications, because they provide both predictability and performance. In this paper, we propose a scheduling technique that jointly selects SPM contents off-line, in such a way that the cost of SPM loading/unloading is hidden. Communications are fragmented to augment hiding possibilities. Experimental results show the effectiveness of the proposed technique on streaming applications and synthetic task-graphs. The overlapping of communications with computations allows the length of generated schedules to be reduced by 4% on average on streaming applications, with a maximum of 16%, and by 8% on average for synthetic task graphs. We further show on a case study that generated schedules can be implemented with low overhead on a predictable multi-core architecture (Kalray MPPA).
关键词：Real-time Systems; Contention-Free Scheduling; SPM multi-core architecture