Abstract
Exascale machines will employ significantly more threads than today, but even on current architectures controlling thread affinity is crucial to fuel all the cores and to maintain data affinity, but both MPI and OpenMP lack a solution to this problem. In this work, we present a thread affinity model for OpenMP, which will be shown to work well with hybrid use cases, too. It maintains a separation of platform-specific data and algorithm-specific properties, thus offering deterministic behavior and simplicity in use.
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Eichenberger, A.E., Terboven, C., Wong, M., an Mey, D. (2012). The Design of OpenMP Thread Affinity. In: Chapman, B.M., Massaioli, F., Müller, M.S., Rorro, M. (eds) OpenMP in a Heterogeneous World. IWOMP 2012. Lecture Notes in Computer Science, vol 7312. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-30961-8_2
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DOI: https://doi.org/10.1007/978-3-642-30961-8_2
Publisher Name: Springer, Berlin, Heidelberg
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