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- Publisher
- Association for Computing Machinery
- Copyright
- Copyright © 2017 ACM
- ISSN
- 1539-9087
- eISSN
- 1558-3465
- DOI
- 10.1145/3122786
- Publisher site
- See Article on Publisher Site
Abstract
Application requirements, such as real-time response, are pushing wearable devices to leverage more powerful processors inside the SoC (system on chip). However, existing wearable devices are not well suited for such challenging applications due to poor performance, and the conventional powerful many-core architectures are not appropriate either due to the stringent power budget in this domain. We propose LOCUS—a low-power, customizable, many-core processor for next-generation wearable devices. LOCUS combines customizable processor cores with a customizable network on a message-passing architecture to deliver very competitive performance/watt—an average 3.1 compared to quad-core ARM processors used in state-of-the-art wearable devices. A combination of full system simulation with representative applications from the wearable domain and RTL synthesis of the architecture show that 16-core LOCUS achieves an average 1.52 performance/watt improvement over a conventional 16-core shared memory many-core architecture. A dynamic power management mechanism is proposed to further decrease the power consumption in both computation and communication, which improves the performance/watt of LOCUS by 1.17.
Journal
ACM Transactions on Embedded Computing Systems (TECS) – Association for Computing Machinery
Published: Nov 14, 2017
Keywords: Customization