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| Home > Institute Collections > JSC > Understanding the formation of wait states in applications with one-sided communication |
| Home > Institute Collections > JSC > Understanding the formation of wait states in applications with one-sided communication |
| Contribution to a conference proceedings/Contribution to a book | FZJ-2016-06981 |
; ; ;
2013
ACM Press
New York, New York, USA
ISBN: 978-1-4503-1903-4
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Please use a persistent id in citations: doi:10.1145/2488551.2488569
Abstract: To better understand the formation of wait states in MPI programs and to support the user in finding optimization targets in the case of load imbalance, a major source of wait states, we added in our earlier work two new trace-analysis techniques to Scalasca, a performance analysis tool designed for large-scale applications. In this paper, we show how the two techniques, which were originally restricted to two-sided and collective MPI communication, are extended to cover also one-sided communication. We demonstrate our experiences with benchmark programs and a mini-application representing the core of the POP ocean model.
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