Characterizing Task-Based OpenMP Programs

Ananya Muddukrishna, Peter A Jonsson and Mats Brorsson

PLOS ONE, 2015, vol. 10, issue 4, 1-29

Abstract: 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.

Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0123545

DOI: 10.1371/journal.pone.0123545

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