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DOI 10.5286/raltr.2016005
Persistent URL http://purl.org/net/epubs/work/24764929
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Record Id 24764929
Title Energy consumption of the Jacobi Test Code on the Blue Gene/Q: does using single precision reduce energy consumption?
Abstract Power optimisation is one of the major requirements for the achievement of exascale systems. In this report, we will compare the power and energy requirements of the Jacobi Test Code when run in single and double precision on STFC Hartree Centre’s IBM Blue Gene/Q, Blue Joule. We will show that switching from double to single precision can give significant energy consumption savings but only when the amount of data movement is significant. As a result, algorithm/software developers should take this into account when trying to reduce the amount of energy consumed by running their codes on computers with similar underlying architectures.
Organisation STFC , SCI-COMP
Keywords software outlook , double precision , CCP , single precision , energy efficient computing , Blue Gene/Q Jacobi Test Code
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Licence Information: Creative Commons Attribution 3.0 Unported (CC BY 3.0)
Language English (EN)
Type Details URI(s) Local file(s) Year
Report RAL Technical Reports RAL-TR-2016-005. 2016. RAL-TR-2016-005.pdf 2016