Conference paper Open Access
Leon, Vasileios; Asimakopoulos, Konstantinos; Xydis, Sotirios; Soudris, Dimitrios; Pekmestzi, Kiamal
{ "description": "<p>Approximate computing appears as an emerging and promising solution for energy-efficient system designs, exploiting the inherent error-tolerant nature of various applications. In this paper, targeting multiplication circuits, i.e., the energy-hungry counterpart of hardware accelerators, an extensive exploration of the error--energy trade-off, when combining arithmetic-level approximation techniques, is performed for the first time. Arithmetic-aware approximations deliver significant energy reductions, while allowing to control the error values with discipline by setting accordingly a configuration parameter. Inspired from the promising results of prior works with one configuration parameter, we propose 5 hybrid design families for approximate and energy-friendly hardware multipliers, consisting of two independent parameters to tune the approximation levels. Interestingly, the resolution of the state-of-the-art Pareto diagram is improved, giving the flexibility to achieve better energy gains for a specific error constraint imposed by the system. Moreover, we outperform prior works in the field of approximate multipliers by up to 60% energy reduction, and thus, we define the new Pareto front.</p>", "license": "https://creativecommons.org/licenses/by/4.0/legalcode", "creator": [ { "affiliation": "National Technical University of Athens, Greece", "@type": "Person", "name": "Leon, Vasileios" }, { "affiliation": "National Technical University of Athens, Greece", "@type": "Person", "name": "Asimakopoulos, Konstantinos" }, { "affiliation": "National Technical University of Athens, Greece", "@type": "Person", "name": "Xydis, Sotirios" }, { "affiliation": "National Technical University of Athens, Greece", "@type": "Person", "name": "Soudris, Dimitrios" }, { "affiliation": "National Technical University of Athens, Greece", "@type": "Person", "name": "Pekmestzi, Kiamal" } ], "headline": "Cooperative Arithmetic-Aware Approximation Techniques for Energy-Efficient Multipliers", "image": "https://zenodo.org/static/img/logos/zenodo-gradient-round.svg", "datePublished": "2019-07-01", "url": "https://zenodo.org/record/3472504", "@context": "https://schema.org/", "identifier": "https://doi.org/10.1145/3316781.3317793", "@id": "https://doi.org/10.1145/3316781.3317793", "@type": "ScholarlyArticle", "name": "Cooperative Arithmetic-Aware Approximation Techniques for Energy-Efficient Multipliers" }
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