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Lin P, Bettencourt M, Domino S, Fisher T, Hoemmen M, Hu J, Phipps E, Prokopenko A, Rajamanickam S, Siefert C, Kennon S. Towards Extreme-Scale Simulations for Low Mach Fluids with Second-Generation Trilinos. ACTA ACUST UNITED AC 2014. [DOI: 10.1142/s0129626414420055] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Trilinos is an object-oriented software framework for the solution of large-scale, complex multi-physics engineering and scientific problems. While Trilinos was originally designed for scalable solutions of large problems, the fidelity needed by many simulations is significantly greater than what one could have envisioned two decades ago. When problem sizes exceed a billion elements even scalable applications and solver stacks require a complete revision. The second-generation Trilinos employs C++ templates in order to solve arbitrarily large problems. We present a case study of the integration of Trilinos with a low Mach fluids engineering application (SIERRA low Mach module/Nalu). Through the use of improved algorithms and better software engineering practices, we demonstrate good weak scaling for up to a nine billion element large eddy simulation (LES) problem on unstructured meshes with a 27 billion row matrix on 524,288 cores of an IBM Blue Gene/Q platform.
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Affiliation(s)
- Paul Lin
- Sandia National Laboratories, Post Office Box 5800 Mail Stop 1320, Albuquerque, NM 87185-1320, USA
| | - Matthew Bettencourt
- Sandia National Laboratories, Post Office Box 5800 Mail Stop 1320, Albuquerque, NM 87185-1320, USA
| | - Stefan Domino
- Sandia National Laboratories, Post Office Box 5800 Mail Stop 1320, Albuquerque, NM 87185-1320, USA
| | - Travis Fisher
- Sandia National Laboratories, Post Office Box 5800 Mail Stop 1320, Albuquerque, NM 87185-1320, USA
| | - Mark Hoemmen
- Sandia National Laboratories, Post Office Box 5800 Mail Stop 1320, Albuquerque, NM 87185-1320, USA
| | - Jonathan Hu
- Sandia National Laboratories, Post Office Box 5800 Mail Stop 1320, Albuquerque, NM 87185-1320, USA
| | - Eric Phipps
- Sandia National Laboratories, Post Office Box 5800 Mail Stop 1320, Albuquerque, NM 87185-1320, USA
| | - Andrey Prokopenko
- Sandia National Laboratories, Post Office Box 5800 Mail Stop 1320, Albuquerque, NM 87185-1320, USA
| | | | - Christopher Siefert
- Sandia National Laboratories, Post Office Box 5800 Mail Stop 1320, Albuquerque, NM 87185-1320, USA
| | - Stephen Kennon
- Sandia National Laboratories, Post Office Box 5800 Mail Stop 1320, Albuquerque, NM 87185-1320, USA
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Galte C, Catlin B, Domino S, Nixon S, Toma M, Hennessy C, Daniel M, Germain S. THE PROVINCIAL HEART FAILURE STRATEGY AT WORK: THE ADVANCED HEART FAILURE PERSONAL ACTION PLAN – “JUST ASK WHAT MATTERS TO ME.”. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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