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Full Record Details
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
Contributors
Dr HS Thorne (STFC Rutherford Appleton Lab.)
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
Funding Information
Related Research Object(s):
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
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