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Asynchronous hybrid parallel SpMV in an industrial application

: Thiele, C.; Araya-Polo, M.; Stoyanov, D.; Frank, F.; Alpak, F.O.


Arabnia, H.R. ; Institute of Electrical and Electronics Engineers -IEEE-:
International Conference on Computational Science and Computational Intelligence, CSCI 2016. Proceedings : 15-17 December 2016, Las Vegas, Nevada, USA
Piscataway, NJ: IEEE, 2016
ISBN: 978-1-5090-5510-4
ISBN: 978-1-5090-5511-1
International Conference on Computational Science and Computational Intelligence (CSCI) <2016, Las Vegas/Nev.>
Conference Paper
Fraunhofer ITWM ()

Pore-scale simulation is both computationally challenging and a key element of hydrocarbon exploration and production ([1], [2], [3]). The subject of this study is the efficient solution of the linear systems arising from the discretization of the Cahn-Hilliard equation ([4], [5]), which governs the separation of a two-component fluid mixture. We investigate synchronous and asynchronous parallel iterative solvers for our simulation. We focus our efforts on two main aspects: first, software infrastructure that supports this kind of computations, mainly Trilinos and GaspiLS. Second, scalability and performance analysis. The asynchronous solver performs well and scales better than the synchronous ones for most test problems, especially for large systems distributed over many computational nodes (up to 23% faster and 10% higher parallel efficiency in these cases).