A lightweight tool for detecting inter-thread communication

Document typeConference report
Defense date2020
PublisherBarcelona Supercomputing Center
Rights accessOpen Access
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property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public
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Abstract
In a multicore environment, inter-thread communication can provide valuable insights
about application performance. Literature detecting inter-thread communication either
employs hardware simulators or binary instrumentation. Those techniques bring both
space and time overhead, which makes them impractical to use on real-life applications.
Instead, we take a completely different approach that leverages hardware performance
counters and debug registers to detect communication volume between threads. The information
generated by our tool can be utilized in several places to guide optimizations,
understand performance behavior, and compare architectural features. In this talk, I
present the design details of our tool along with experimental results on small to very
large applications. I would like to note that this work is nominated for the best paper and
the best student paper at SC19.
CitationUnat, D. A lightweight tool for detecting inter-thread communication. A: . Barcelona Supercomputing Center, 2020, p. 26-27.
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