Abstract
For efficiency and accuracy of Direct Numerical Simulations (DNS) of turbulent flows pseudo-spectral methods can be employed, where the governing equations are solved partly in Fourier space. The inhouse-developed 3d-FFT library nb3dfft is optimized to the special needs of pseudo-spectral DNS, particularly for the scientific code psOpen, used by the Institute for Combustion Technology at RWTH Aachen University. In this paper we discuss the method of overlapping communication and computation of multiple FFTs at the same time.
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CITATION STYLE
Göbbert, J. H., Iliev, H., Ansorge, C., & Pitsch, H. (2017). Overlapping of communication and computation in nb3dfft for 3D fast fourier transformations. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 10164 LNCS, pp. 151–159). Springer Verlag. https://doi.org/10.1007/978-3-319-53862-4_13
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