Contribution to a conference proceedings/Contribution to a book

FZJ-2025-02503

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Portable Linear Solvers for High-Order Spectral Element Methods on GPUs

Tsai, Y. M. ; Olenik, G. ; Herten, A.FZJ* ; Bode, M.FZJ* ; Anzt, H. (Corresponding author)

2025
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag Jülich

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Please use a persistent id in citations: doi:10.34734/FZJ-2025-02503

Abstract: The diversification in hardware architectures has become a challenge for computational science: software stacks implemented for a specific hardware architecture often fail to port to other systems. To counter this problem, simulation software stacks increasingly rely on portability layers or software stacks that feature backends for different hardware architectures. We present Ginkgo, a math library that takes platform portability as a central design principle and can be used for numerical calculations in the nekRS CFD code. A runtime and scalability analysis for CFD applications demonstrates that Ginkgo enables platform portability at high performance and scalability.

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Contributing Institute(s):

1. Jülich Supercomputing Center (JSC)

Research Program(s):

1. 5111 - Domain-Specific Simulation & Data Life Cycle Labs (SDLs) and Research Groups (POF4-511) (POF4-511)
2. Inno4Scale - Innovative Algorithms for Applications on European Exascale Supercomputers (101118139) (101118139)

Appears in the scientific report 2025

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