Abstract
In this work we discuss the performance problems of nested OpenMP programs concerning thread and data locality particularly on cc-NUMA architectures. We provide a user friendly solution and demonstrate its benefits by comparing the performance of some kernel benchmarks and some real-world applications with and without applying our affinity optimizations.
This research is partially supported by the German Federal Ministry of Education and Research (BMBF) under the contract 03SF0326A “MeProRisk: Novel methods for exploration, development, and exploitation of geothermal reservoirs - a toolbox for prognosis and risk assessment.”
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Schmidl, D., Terboven, C., an Mey, D., Bücker, M. (2010). Binding Nested OpenMP Programs on Hierarchical Memory Architectures. In: Sato, M., Hanawa, T., Müller, M.S., Chapman, B.M., de Supinski, B.R. (eds) Beyond Loop Level Parallelism in OpenMP: Accelerators, Tasking and More. IWOMP 2010. Lecture Notes in Computer Science, vol 6132. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-13217-9_3
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DOI: https://doi.org/10.1007/978-3-642-13217-9_3
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