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University of the Basque Country Researchers Yield New Data on Energy (Evaluating Latency in Multiprocessing Embedded Systems for the Smart Grid)

  • Jul 21, 2021 1:23 pm GMT
Energy Daily News

2021 JUL 20 (NewsRx) -- By a News Reporter-Staff News Editor at Energy Daily News -- New research on energy is the subject of a new report. According to news originating from Bilbao, Spain, by NewsRx correspondents, research stated, “Smart grid endpoints need to use two environments within a processing system (PS), one with a Linux-type operating system (OS) using the Arm Cortex-A53 cores for management tasks, and the other with a standalone execution or a real-time OS using the Arm Cortex-R5 cores.”

The news editors obtained a quote from the research from University of the Basque Country: “The Xen hypervisor and the OpenAMP framework allow this, but they may introduce a delay in the system, and some messages in the smart grid need a latency lower than 3 ms. In this paper, the Linux thread latencies are characterized by the Cyclictest tool. It is shown that when Xen hypervisor is used, this scenario is not suitable for the smart grid as it does not meet the 3 ms timing constraint. Then, standalone execution as the real-time part is evaluated, measuring the delay to handle an interrupt created in programmable logic (PL). The standalone application was run in A53 and R5 cores, with Xen hypervisor and OpenAMP framework. These scenarios all met the 3 ms constraint.”

According to the news editors, the research concluded: “The main contribution of the present work is the detailed characterization of each real-time execution, in order to facilitate selecting the most suitable one for each application.”

For more information on this research see: Evaluating Latency in Multiprocessing Embedded Systems for the Smart Grid. Energies, 2021,14(3322):3322. (Energies - The publisher for Energies is MDPI AG.

A free version of this journal article is available at

Our news journalists report that additional information may be obtained by contacting Sara Alonso, University of the Basque Country, Euskal Herriko Unibertsitatea (UPV, EHU), 48013 Bilbao, Spain. Additional authors for this research include Jesus Lazaro, Jaime Jimenez, Unai Bidarte, Leire Muguira.


(Our reports deliver fact-based news of research and discoveries from around the world.)


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