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Improving Energy Efficiency in Wireless Network-on-Chip Architectures VINCENZO CATANIA, ANDREA MINEO, SALVATORE MONTELEONE, MAURIZIO PALESI, and DAVIDE PATTI, University of Catania Wireless Network-on-Chip (WiNoC) represents a promising emerging communication technology for addressing the scalability limitations of future manycore architectures. In a WiNoC, high-latency and powerhungry long-range multi-hop communications can be realized by performance- and energy-efficient singlehop wireless communications. However, the energy contribution of such wireless communication accounts for a significant fraction of the overall communication energy budget. This article presents a novel energy managing technique for WiNoC architectures aimed at improving the energy efficiency of the main elements of the wireless infrastructure, namely, radio-hubs. The rationale behind the proposed technique is based on selectively turning off, for the appropriate number of cycles, all the radio-hubs that are not involved in the current wireless communication. The proposed energy managing technique is assessed on several network configurations under different traffic scenarios both synthetic and extracted from the execution of real applications. The obtained results show that the application of the proposed technique allows up to 25% total communication energy saving without any impact on performance and with a negligible impact on the silicon area of the radio-hub. CCS Concepts: ¢
ACM Journal on Emerging Technologies in Computing Systems (JETC) – Association for Computing Machinery
Published: Nov 3, 2017
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