Intermittent Computing with Efficient State Backup by Asynchronous DMA

Wei Zhang, Sonran Liu, Mingsong Lv, Qiulin Chen, Nan Guan

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

4 Citations (Scopus)

Abstract

Energy harvesting promises to power billions of Internet-of-Things devices without being restricted by battery life. The energy output of harvesters is typically weak and highly unstable, so computing systems must frequently back up program states into non-volatile memory to ensure a program will progress in the presence of frequent power failures. However, state backup is a time-consuming process. In existing solutions for this problem, state backup is conducted sequentially with program execution, which considerably impact system performance. This paper proposes techniques to parallelize state backup and program execution with asynchronous DMA. The challenge is that program states can be incorrectly backed up, which may further cause the program to deliver incorrect computation. Our main idea is to allow errors to occur in parallel state backup and program execution, and detect the errors at the end of the state backup. Moreover, we propose a technique that allows the system to tolerate backup errors during execution without harming logical correctness. We designed a run-time system to implement the proposed approach. Experimental results on an STM32F7-based platform show that execution performance can be considerably improved by parallelizing state backup and program execution.

Original languageEnglish
Title of host publicationProceedings of the 2021 Design, Automation and Test in Europe, DATE 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages543-548
Number of pages6
ISBN (Electronic)9783981926354
DOIs
Publication statusPublished - 1 Feb 2021
Event2021 Design, Automation and Test in Europe Conference and Exhibition, DATE 2021 - Virtual, Online
Duration: 1 Feb 20215 Feb 2021

Publication series

NameProceedings -Design, Automation and Test in Europe, DATE
Volume2021-February
ISSN (Print)1530-1591

Conference

Conference2021 Design, Automation and Test in Europe Conference and Exhibition, DATE 2021
CityVirtual, Online
Period1/02/215/02/21

Keywords

  • asynchronous DMA
  • execution performance
  • intermittent computing
  • state backup

ASJC Scopus subject areas

  • General Engineering

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