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arXiv · 2308.12819

DiCA: A Hardware-Software Co-Design for Differential Checkpointing in Intermittently Powered Devices

Antonio Joia Neto·Adam Caulfield·Chistabelle Alvares·Ivan De Oliveira Nunes
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Abstract

Intermittently powered devices rely on opportunistic energy-harvesting to function, leading to recurrent power interruptions. This paper introduces DiCA, a proposal for a hardware/software co-design to create differential check-points in intermittent devices. DiCA leverages an affordable hardware module that simplifies the check-pointing process, reducing the check-point generation time and energy consumption. This hardware module continuously monitors volatile memory, efficiently tracking modifications and determining optimal check-point times. To minimize energy waste, the module dynamically estimates the energy required to create and store the check-point based on tracked memory modifications, triggering the check-pointing routine optimally via a nonmaskable interrupt. Experimental results show the cost-effectiveness and energy efficiency of DiCA, enabling extended application activity cycles in intermittently powered embedded devices.

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Antonio Joia Neto, Adam Caulfield, Chistabelle Alvares, Ivan De Oliveira Nunes. 2023-08-24. DiCA: A Hardware-Software Co-Design for Differential Checkpointing in Intermittently Powered Devices. https://arxiv.org/abs/2308.12819

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