Energy consumption optimization of the total-FETI solver by changing the CPU frequency
| Autor: | Joseph Schuchart, David Horák, Martin Beseda, Radim Sojka, Martin Cermak, Jakub Kruzik, Lubomir Riha |
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| Rok vydání: | 2017 |
| Předmět: |
energy conservation
Computer science Energy consumption optimization power aware computing 05 social sciences CPU frequency microprocessor chips 050301 education Parallel computing finite element analysis Solver BLAS routines FETI 0501 psychology and cognitive sciences Central processing unit 0503 education READEX 050104 developmental & child psychology field programmable gate arrays |
| Zdroj: | AIP Conference Proceedings volume 1863 |
| ISSN: | 0094-243X |
| DOI: | 10.1063/1.4992511 |
| Popis: | The 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. Authors 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, the effect of frequency tuning on the energy consumption of the essential processing kernels of the FETI method was evaluated. 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%. |
| Databáze: | OpenAIRE |
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