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Characterizing task-based OpenMP programs
KTH Royal Institute of Technology, Sweden.
RISE, Swedish ICT, SICS.
RISE, Swedish ICT, SICS. KTH Royal Institute of Technology, Sweden.ORCID iD: 0000-0002-9637-2065
2015 (English)In: PLoS ONE, E-ISSN 1932-6203, Vol. 10, no 4, article id e0123545Article in journal (Refereed) Published
Abstract [en]

Programmers struggle to understand performance of task-based OpenMP programs since profiling tools only report thread-based performance. Performance tuning also requires task-based performance in order to balance per-task memory hierarchy utilization against exposed task parallelism. We provide a cost-effective method to extract detailed task-based performance information from OpenMP programs. We demonstrate the utility of our method by quickly diagnosing performance problems and characterizing exposed task parallelism and per-task instruction profiles of benchmarks in the widely-used Barcelona OpenMP Tasks Suite. Programmers can tune performance faster and understand performance tradeoffs more effectively than existing tools by using our method to characterize task-based performance.

Place, publisher, year, edition, pages
Public Library of Science , 2015. Vol. 10, no 4, article id e0123545
Keywords [en]
Article, automation, computer interface, computer program, controlled study, data analysis, data processing, information processing, information system, program cost effectiveness, human, software, task performance, Humans, Task Performance and Analysis
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-41878DOI: 10.1371/journal.pone.0123545Scopus ID: 2-s2.0-84929498034OAI: oai:DiVA.org:ri-41878DiVA, id: diva2:1377790
Available from: 2019-12-12 Created: 2019-12-12 Last updated: 2019-12-12Bibliographically approved

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Brorsson, Mats

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