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Low Overhead Online Data Flow Tracking for Intermittently Powered Non-Volatile FPGAs

Low Overhead Online Data Flow Tracking for Intermittently Powered Non-Volatile FPGAs Energy harvesting is an attractive way to power future Internet of Things (IoT) devices since it can eliminate the need for battery or power cables. However, harvested energy is intrinsically unstable. While Field-programmable Gate Array (FPGAs) have been widely adopted in various embedded systems, it is hard to survive unstable power since all the memory components in FPGA are based on volatile Static Random-access Memory (SRAMs). The emerging non-volatile memory-based FPGAs provide promising potentials to keep configuration data on the chip during power outages. Few works have considered implementing efficient runtime intermediate data checkpoint on non-volatile FPGAs. To realize accumulative computation under intermittent power on FPGA, this article proposes a low-cost design framework, Data-Flow-Tracking FPGA (DFT-FPGA), which utilizes binary counters to track intermediate data flow. Instead of keeping all on-chip intermediate data, DFT-FPGA only targets on necessary data that is labeled by off-line analysis and identified by an online tracking system. The evaluation shows that compared with state-of-the-art techniques, DFT-FPGA can realize accumulative computing with less off-line workload and significantly reduce online roll-back time and resource utilization. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png ACM Journal on Emerging Technologies in Computing Systems (JETC) Association for Computing Machinery

Low Overhead Online Data Flow Tracking for Intermittently Powered Non-Volatile FPGAs

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References (61)

Publisher
Association for Computing Machinery
Copyright
Copyright © 2020 ACM
ISSN
1550-4832
eISSN
1550-4840
DOI
10.1145/3371392
Publisher site
See Article on Publisher Site

Abstract

Energy harvesting is an attractive way to power future Internet of Things (IoT) devices since it can eliminate the need for battery or power cables. However, harvested energy is intrinsically unstable. While Field-programmable Gate Array (FPGAs) have been widely adopted in various embedded systems, it is hard to survive unstable power since all the memory components in FPGA are based on volatile Static Random-access Memory (SRAMs). The emerging non-volatile memory-based FPGAs provide promising potentials to keep configuration data on the chip during power outages. Few works have considered implementing efficient runtime intermediate data checkpoint on non-volatile FPGAs. To realize accumulative computation under intermittent power on FPGA, this article proposes a low-cost design framework, Data-Flow-Tracking FPGA (DFT-FPGA), which utilizes binary counters to track intermediate data flow. Instead of keeping all on-chip intermediate data, DFT-FPGA only targets on necessary data that is labeled by off-line analysis and identified by an online tracking system. The evaluation shows that compared with state-of-the-art techniques, DFT-FPGA can realize accumulative computing with less off-line workload and significantly reduce online roll-back time and resource utilization.

Journal

ACM Journal on Emerging Technologies in Computing Systems (JETC) – Association for Computing Machinery

Published: Jul 1, 2020

Keywords: Energy harvesting

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