Simultaneous Multithreading on x86_64 Systems: An Energy Efficiency Evaluation
Research output: Contribution to book/conference proceedings/anthology/report › Conference contribution › Contributed › peer-review
Contributors
Abstract
In recent years, power consumption has become one of the most important design criteria for micropro- cessors. CPUs are therefore no longer developed with a narrow focus on raw compute performance. This means that well-established processor features that have proven to increase compute performance now need to be re-evaluated with a new focus on energy efficiency. This paper presents an energy ef- ficiency evaluation of the symmetric multithreading (SMT) feature on state-of-the-art x86 64 processors. We use a mature power measurement methodology to analyze highly sophisticated low-level microbenchmarks as well as a diverse set of application benchmarks. Our results show that–depending on the workload–SMT can be at the same time advantageous in terms of performance and disadvantageous in terms of energy efficiency. Moreover, we demonstrate how the SMT efficiency has advanced between two processor generations.
Details
Original language | Undefined |
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Title of host publication | Proceedings of the 4th Workshop on Power-Aware Computing and Systems |
Place of Publication | New York, NY, USA |
Publisher | Association for Computing Machinery (ACM), New York |
Pages | 10:1-10:5 |
Number of pages | 5 |
ISBN (print) | 978-1-4503-0981-3 |
Publication status | Published - 2011 |
Peer-reviewed | Yes |
Workshop
Title | Workshop on Power Aware Computing and Systems |
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Subtitle | co-located with SOSP |
Abbreviated title | HotPower'11 |
Conference number | 4 |
Duration | 23 October 2011 |
Degree of recognition | International event |
City | Cascais |
Country | Portugal |
External IDs
ORCID | /0000-0002-8491-770X/work/141543303 |
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Scopus | 81055139559 |
ORCID | /0009-0003-0666-4166/work/151475602 |