E-Team: Practical Energy Accounting for Multi-Core Systems


Till Smejkal and Marcus Hähnel, TU Dresden; Thomas Ilsche, Center for Information Services and High Performance Computing (ZIH) Technische Universität Dresden; Michael Roitzsch, TU Dresden; Wolfgang E. Nagel, Center for Information Services and High Performance Computing (ZIH) Technische Universität Dresden; Hermann Härtig, TU Dresden


Energy-based billing as well as energy-efficient software require accurate knowledge of energy consumption. Model-based energy accounting and external measurement hardware are the main methods to obtain energy data, but cost and the need for frequent recalibration have impeded their large-scale adoption. Running Average Power Limit (RAPL) by Intel® enables non-intrusive, off-the-shelf energy monitoring, but only on a per-socket level. To enable apportioning of energy to individual applications we present E-Team, a non-intrusive, scheduler-based, easy-to-use energy-accounting mechanism. By leveraging RAPL, our method can be used on any Intel system built after 2011 without the need for external infrastructure, application modification, or model calibration. E-Team allows starting and stopping measurements at arbitrary points in time while maintaining a low performance overhead. E-Team provides high accuracy, compared to external instrumentation, with an error of less than 3:5 %.

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@inproceedings {203239,
author = {Till Smejkal and Marcus H{\"a}hnel and Thomas Ilsche and Michael Roitzsch and Wolfgang E. Nagel and Hermann H{\"a}rtig},
title = {E-Team: Practical Energy Accounting for Multi-Core Systems},
booktitle = {2017 {USENIX} Annual Technical Conference ({USENIX} {ATC} 17)},
year = {2017},
isbn = {978-1-931971-38-6},
address = {Santa Clara, CA},
pages = {589--601},
url = {https://www.usenix.org/conference/atc17/technical-sessions/presentation/smejkal},
publisher = {{USENIX} Association},