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DOI: 10.4230/LIPIcs.ECRTS.2019.25
URN: urn:nbn:de:0030-drops-107626
URL: http://drops.dagstuhl.de/opus/volltexte/2019/10762/
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Rouxel, Benjamin ; Skalistis, Stefanos ; Derrien, Steven ; Puaut, Isabelle

Hiding Communication Delays in Contention-Free Execution for SPM-Based Multi-Core Architectures

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LIPIcs-ECRTS-2019-25.pdf (0.9 MB)


Abstract

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).

BibTeX - Entry

@InProceedings{rouxel_et_al:LIPIcs:2019:10762,
  author =	{Benjamin Rouxel and Stefanos Skalistis and Steven Derrien and Isabelle Puaut},
  title =	{{Hiding Communication Delays in Contention-Free Execution for SPM-Based Multi-Core Architectures}},
  booktitle =	{31st Euromicro Conference on Real-Time Systems (ECRTS 2019)},
  pages =	{25:1--25:24},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-110-8},
  ISSN =	{1868-8969},
  year =	{2019},
  volume =	{133},
  editor =	{Sophie Quinton},
  publisher =	{Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{http://drops.dagstuhl.de/opus/volltexte/2019/10762},
  URN =		{urn:nbn:de:0030-drops-107626},
  doi =		{10.4230/LIPIcs.ECRTS.2019.25},
  annote =	{Keywords: Real-time Systems, Contention-Free Scheduling, SPM multi-core architecture}
}

Keywords: Real-time Systems, Contention-Free Scheduling, SPM multi-core architecture
Seminar: 31st Euromicro Conference on Real-Time Systems (ECRTS 2019)
Issue Date: 2019
Date of publication: 08.07.2019


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