A FFT-accelerated multi-block finite-difference solver for massively parallel simulations of incompressible flows

• Published in: Computer Physics Communications
• Main Author: Costa, Pedro Simoes
• Other Authors: University of Iceland
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2022
• Subjects: Tölvunarfræði; Vélbúnaður (tölvur); Computational fluid dynamics; Direct numerical simulation; Fast Poisson solver; High-performance computing; Multi-block solver; Hardware and Architecture; Physics and Astronomy (all); Norway; Iceland
• Online Access: https://hdl.handle.net/20.500.11815/3016; https://doi.org/10.1016/j.cpc.2021.108194

Funding Information: I would like to thank Luca Brandt for interesting discussions, and the first users of SNaC from KTH Mechanics, Arash Banaei, Nazario Mastroianni, and Nicolò Scapin for the invaluable feedback and testing. Dr. Rob Falgout from Lawrence Livermore National Laboratory is thanked for suggesting the “sliced pencils” approach using hypre in Algorithm 2, as an alternative to Algorithm 3. Prof. Fernando Pinho from University of Porto (FEUP) is thanked for kindly providing the validation data from Ref. [43]. Finally, the two anonymous reviewers are thanked for the useful feedback on an earlier version of this manuscript. The computing time for the scaling tests was provided by the Swedish National Infrastructure for Computing (SNIC), and the National Infrastructure for High-Performance Computing and Data Storage in Norway, (Sigma2). This work was supported by the University of Iceland Recruitment Fund grant No. 1515-151341, TURBBLY. Funding Information: I would like to thank Luca Brandt for interesting discussions, and the first users of SNaC from KTH Mechanics, Arash Banaei, Nazario Mastroianni, and Nicolò Scapin for the invaluable feedback and testing. Dr. Rob Falgout from Lawrence Livermore National Laboratory is thanked for suggesting the “sliced pencils” approach using hypre in Algorithm 2 , as an alternative to Algorithm 3 . Prof. Fernando Pinho from University of Porto (FEUP) is thanked for kindly providing the validation data from Ref. [43] . Finally, the two anonymous reviewers are thanked for the useful feedback on an earlier version of this manuscript. The computing time for the scaling tests was provided by the Swedish National Infrastructure for Computing (SNIC), and the National Infrastructure for High-Performance Computing and Data Storage in Norway, (Sigma2). This work was supported by the University of Iceland Recruitment Fund grant No. 1515-151341 , TURBBLY. Publisher Copyright: © 2021 Elsevier B.V. We present a multi-block finite-difference solver for massively parallel Direct ...