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DOI 10.5286/raltr.2016014
Persistent URL http://purl.org/net/epubs/work/30019264
Record Status Checked
Record Id 30019264
Title Investigation into the mixed precision linear solver HSL_MA79
Abstract In software development, a large amount of work is done to ensure that the resulting code is efficient, where the wall clock execution time is the normal measure for efficiency. In the future, there will be an increasing desire for codes to be energy efficient, that is, the amount of energy consumed whilst the code is run is minimised. The use of mixed precision is one proposed methodology for reducing both wall clock execution times and energy consumption of some codes. In this report, we consider the HSL code HSL MA79, which is a mixed precision code for solving linear systems of the form Ax = b, where x is the unknown. We compare execution times and energy consumption of the code for a number of different matrices A in a bid to reveal whether there are classes of sparse, symmetric matrix problems where the mixed precision approach may be advantageous. In particular, we will consider the application area that the matrix is from.
Organisation STFC , SCI-COMP , SCI-COMP-CM
Keywords linear solver , software Outlook , double precision , Intel Xeon (IvyBridge) , CCP , single precision , energy efficient computing , mixed precision
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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-2016-014. STFC, 2016. RAL-TR-2016-014.pdf 2016