Optimal checkpointing for secure intermittently-powered IoT devices
Optimal checkpointing for secure intermittently-powered IoT devices
复制标题
安全间歇供电物联网设备的最佳检查点
DOI：
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复制
发表时间：
2017
期刊：
影响因子：
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通讯作者：
R. Karri
中科院分区：
文献类型：
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作者：
Zahra Ghodsi;S. Garg;R. Karri
能量收集是为物联网(IoT)设备供电的一种很有前途的解决方案。由于这些能源的间歇性，人们不能保证程序执行的向前进展。先前的工作已经主张将中间状态检查点设置到片外非易失性存储器(NVM)。加密检查点解决了安全问题，但显著增加了检查点开销。在本文中，我们提出了一种新的在线检查点策略，该策略明智地确定何时设置检查点，以便在保证安全性的同时最小化应用程序的完成时间。与不考虑加密检查点开销的最新检查点方案相比，我们将执行时间提高了1.4倍。
Energy harvesting is a promising solution to power Internet of Things (IoT) devices. Due to the intermittent nature of these energy sources, one cannot guarantee forward progress of program execution. Prior work has advocated for checkpointing the intermediate state to off-chip non-volatile memory (NVM). Encrypting checkpoints addresses the security concern, but significantly increases the checkpointing overheads. In this paper, we propose a new online checkpointing policy that judiciously determines when to checkpoint so as to minimize application time to completion while guaranteeing security. Compared to state-of-the-art checkpointing schemes that do not account for the overheads of encrypted checkpoints we improve execution time up to 1.4 x.