Energy consumption optimization of the total-FETI solver by changing the CPU frequency

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27240%2F17%3A10237668" target="_blank" >RIV/61989100:27240/17:10237668 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27740/17:10237668
Result on the web
<a href="http://dx.doi.org/10.1063/1.4992511" target="_blank" >http://dx.doi.org/10.1063/1.4992511</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/1.4992511" target="_blank" >10.1063/1.4992511</a>

Result language
angličtina
Original language name
Energy consumption optimization of the total-FETI solver by changing the CPU frequency
Original language description
The energy consumption of supercomputers is one of the critical problems for the upcoming Exascale supercomputing era. The awareness of power and energy consumption is required on both software and hardware side. This paper deals with the energy consumption evaluation of the Finite Element Tearing and Interconnect (FETI) based solvers of linear systems, which is an established method for solving real-world engineering problems. We have evaluated the effect of the CPU frequency on the energy consumption of the FETI solver using a linear elasticity 3D cube synthetic benchmark. In this problem, we have evaluated the effect of frequency tuning on the energy consumption of the essential processing kernels of the FETI method. The paper provides results for two types of frequency tuning: (1) static tuning and (2) dynamic tuning. For static tuning experiments, the frequency is set before execution and kept constant during the runtime. For dynamic tuning, the frequency is changed during the program execution to adapt the system to the actual needs of the application. The paper shows that static tuning brings up 12% energy savings when compared to default CPU settings (the highest clock rate). The dynamic tuning improves this further by up to 3%. © 2017 Author(s).
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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