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Civil-Comp Proceedings
ISSN 1759-3433 CCP: 111
PROCEEDINGS OF THE FIFTH INTERNATIONAL CONFERENCE ON PARALLEL, DISTRIBUTED, GRID AND CLOUD COMPUTING FOR ENGINEERING Edited by:
Paper 3
Evaluation of the HPC Applications Dynamic Behavior in Terms of Energy Consumption O. Vysocky1,M. Beseda1, L. Riha1, J. Zapletal1, V. Nikl2, M. Lysaght3 and V. Kannan3
1IT4Innovations, VSB-Technical University of Ostrava, Czech Republic O. Vysocky, M. Beseda, L. Riha, J. Zapletal, V. Nikl, M. Lysaght, V. Kannan, "Evaluation of the HPC Applications Dynamic Behavior
in Terms of Energy Consumption", in , (Editors), "Proceedings of the
Fifth International Conference
on
Parallel, Distributed, Grid and Cloud Computing
for Engineering", Civil-Comp Press, Stirlingshire, UK, Paper 3, 2017. doi:10.4203/ccp.111.3
Keywords: READEX, energy efficient computing,MERIC, RADAR, HDEEM, RAPL,
runtime tuning, Haswell processor.
Summary
This paper introduces the READEX project tuning approach which exploits the dynamic
application behavior and its potential for energy savings. The paper is focused
on themanual applications evaluation from the energy consumption optimisation point
of view. As an examples we have selected one complex application, the ESPRESO
library and two simplified applications from the ProxyApps benchmark tool suite.
ESPRESO containsmany types of operations including I/O, communication, sparse
BLAS and dense BLAS. The results show that static savings are 5.6–12.3% and dynamic
savings are 4.7–9.1%. The highest total savings for ESPRESO are 21.4%
as a combination of 12.3% static savings and 9.1% dynamic savings.
The ProxyApp applications, Kripke and Lulesh, were presented for two configurations
each. The first configuration of the Kripke saved 29.3% energy, almost only
by static tuning. On the other hand, the second configuration shows us only 18.8%
savings, but over a third of it was saved by dynamic switching CPU core and uncore
frequencies. The Lulesh test cases saved 28.9%, respectively 26.7%.
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