Abstract
We analyze the energy-performance balance of a task-parallel computation of an ILU-based preconditioner for the solution of sparse linear systems on multi-core processors. In particular, we elaborate a theoretical model for the power dissipation, and employ it to explore the effect of the processor power states on the time-power-energy interaction for this calculation. Armed with the insights gained from this study, we then introduce two energy-saving mechanisms which, incorporated into the runtime in charge of the parallel execution of the algorithm, improve energy efficiency by 6.9%, with a negligible impact on performance.
Original language | English |
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Title of host publication | ICT as Key Technology Against Global Warming - Second International Conference, ICT-GLOW 2012, Proceedings |
Pages | 55-63 |
Number of pages | 9 |
DOIs | |
Publication status | Published - 1 Oct 2012 |
Externally published | Yes |
Event | International Conference on ICT as a Key Technology Against Global Warming, 2012 - Vienna, Austria Duration: 6 Sept 2012 → 6 Sept 2012 Conference number: 2nd |
Publication series
Name | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) |
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Volume | 7453 LNCS |
ISSN (Print) | 0302-9743 |
ISSN (Electronic) | 1611-3349 |
Conference
Conference | International Conference on ICT as a Key Technology Against Global Warming, 2012 |
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Abbreviated title | ICT-GLOW 2012 |
Country/Territory | Austria |
City | Vienna |
Period | 6/09/12 → 6/09/12 |