A Scheduling Framework for Decomposable Kernels on Energy Harvesting IoT Edge Nodes

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

With the growing popularity of the Internet of Things (IoTs), emerging applications demand that edge nodes provide higher computational capabilities and long operation times while requiring minimal maintenance. Ambient energy harvesting is a promising alternative to batteries, but only if the hardware and software are optimized for the intermittent nature of the power source. At the same time, many compute tasks in IoT workloads involve executing decomposable kernels that may have application-dependent accuracy requirements. In this work, we introduce a hardware-software co-optimization framework for such kernels that aim to achieve maximum forward progress while running on energy harvesting Non-Volatile Processors (NVP). Using this framework, we develop an FFT and a convolution accelerator that computes up to 3.2x faster, while consuming 5.4x less energy, compared to a baseline energy-harvesting system. With our accuracy-aware scheduling strategy, the approximate computing enabled by this framework delivers on average 6.2x energy reduction and 3.2x speedup by sacrificing minimal accuracy of up to 6.9%.

Original languageEnglish (US)
Title of host publicationGLSVLSI 2022 - Proceedings of the Great Lakes Symposium on VLSI 2022
PublisherAssociation for Computing Machinery
Pages91-96
Number of pages6
ISBN (Electronic)9781450393225
DOIs
StatePublished - Jun 6 2022
Event32nd Great Lakes Symposium on VLSI, GLSVLSI 2022 - Irvine, United States
Duration: Jun 6 2022Jun 8 2022

Publication series

NameProceedings of the ACM Great Lakes Symposium on VLSI, GLSVLSI

Conference

Conference32nd Great Lakes Symposium on VLSI, GLSVLSI 2022
Country/TerritoryUnited States
CityIrvine
Period6/6/226/8/22

All Science Journal Classification (ASJC) codes

  • General Engineering

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