Abstract
With the increased core count in current HPC systems, node level parallelization has become more important even on distributed memory systems. The evolution of HPC therefore requires programming models to be capable of not only reacting to errors, but also resolving them. We derive a classification of common OpenMP usage errors and evaluate them in terms of automatic detection by correctness-checking tools, the OpenMP runtime and debuggers. After a short overview of the new features that were introduced in the OpenMP 4.0 standard, we discuss in more detail individual error cases that emerged due to the task construct of OpenMP 3.0 and the target construct of OpenMP 4.0. We further propose a default behavior to resolve the situation if the runtime is capable of handling the usage error. Besides the specific cases of error we discuss in this work, others can be distinctly integrated into our classification.
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Münchhalfen, J.F., Hilbrich, T., Protze, J., Terboven, C., Müller, M.S. (2014). Classification of Common Errors in OpenMP Applications. In: DeRose, L., de Supinski, B.R., Olivier, S.L., Chapman, B.M., Müller, M.S. (eds) Using and Improving OpenMP for Devices, Tasks, and More. IWOMP 2014. Lecture Notes in Computer Science, vol 8766. Springer, Cham. https://doi.org/10.1007/978-3-319-11454-5_5
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DOI: https://doi.org/10.1007/978-3-319-11454-5_5
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