Publisher DOI: 10.1007/978-3-030-75933-9_4
Title: Twelve ways to fool the masses when giving parallel-in-time results
Language: English
Authors: Götschel, Sebastian  
Minion, Michael 
Ruprecht, Daniel  
Speck, Robert 
Issue Date: 25-Aug-2021
Publisher: Springer Nature
Source: Springer Proceedings in Mathematics and Statistics 356: 81-94 (2021)
Abstract (english): 
Getting good speedup—let alone high parallel efficiency—for parallel-in-time (PinT) integration examples can be frustratingly difficult. The high complexity and large number of parameters in PinT methods can easily (and unintentionally) lead to numerical experiments that overestimate the algorithm’s performance. In the tradition of Bailey’s article “Twelve ways to fool the masses when giving performance results on parallel computers”, we discuss and demonstrate pitfalls to avoid when evaluating the performance of PinT methods. Despite being written in a light-hearted tone, this paper is intended to raise awareness that there are many ways to unintentionally fool yourself and others and that by avoiding these fallacies more meaningful PinT performance results can be obtained.
Conference: 9th Parallel-in-Time Workshop, PinT 2020 
ISBN: 978-3-030-75933-9
Institute: Mathematik E-10 
Document Type: Chapter/Article (Proceedings)
More Funding information: The work of Minion was supported by the U.S. Department of Energy, Office of Science, Office of Advanced Scientific Computing Research, Applied Mathematics program under contract number DE-AC02005CH11231. Part of the simulations was performed using resources of the National Energy Research Scientific Computing Center (NERSC), a DOE Office of Science User Facility supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
Part of Series: Springer proceedings in mathematics & statistics 
Volume number: 356
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