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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/61989100:27740/17:10237668

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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).

Název v anglickém jazyce

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

Popis výsledku anglicky

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).

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10102 - Applied mathematics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

AIP Conference Proceedings. Volume 1863

ISBN

978-0-7354-1538-6

ISSN

0094-243X

e-ISSN

neuvedeno

Počet stran výsledku

4

Strana od-do

—

Název nakladatele

American Institute of Physics

Místo vydání

Melville

Místo konání akce

Rhodos

Datum konání akce

19. 9. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000410159800338