Tuning OpenCL applications with the periscope tuning framework

Enes Bajrovic, Robert Mijakovic, Jiri Dokulil, Siegfried Benkner, Michael Gerndt

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Scopus citations

Abstract

Due to the complexity and diversity of new parallel architectures automatic tuning of parallel applications has become increasingly important for achieving acceptable performance levels as well as performance portability. The European AutoTune project developed a tuning framework which closely integrates and automates performance analysis and performance tuning. The Periscope Tuning Framework relies on a flexible plugin mechanism providing tuning plugins for different tuning aspects. This paper presents plugins for tuning the execution time of OpenCL kernels on three different architectures, namely standard multicore CPUs, Xeon Phi coprocessors, and GPUs. We present OpenCL tuning via the flags used during offline kernel compilation as well as through the selection of the most appropriate NDRange configuration, which defines the organization of parallel threads used for kernel execution. Both tuning plugins show significant performance impact and a clear dependence on the target architecture and thus improve performance portability via automatic tuning.

Original languageEnglish
Title of host publicationProceedings of the 49th Annual Hawaii International Conference on System Sciences, HICSS 2016
EditorsRalph H. Sprague, Tung X. Bui
PublisherIEEE Computer Society
Pages5752-5761
Number of pages10
ISBN (Electronic)9780769556703
DOIs
StatePublished - 7 Mar 2016
Event49th Annual Hawaii International Conference on System Sciences, HICSS 2016 - Koloa, United States
Duration: 5 Jan 20168 Jan 2016

Publication series

NameProceedings of the Annual Hawaii International Conference on System Sciences
Volume2016-March
ISSN (Print)1530-1605

Conference

Conference49th Annual Hawaii International Conference on System Sciences, HICSS 2016
Country/TerritoryUnited States
CityKoloa
Period5/01/168/01/16

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