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Heterogeneous CPU/GPU co-execution of CFD simulations on the POWER9 architecture: Application to airplane aerodynamics

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10.1016/j.future.2020.01.045
 
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hdl:2117/187527

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Borrell, Ricard
Dosimont, Damien
Garcia Gasulla, MartaMés informació
Houzeaux, GuillaumeMés informació
Lehmkuhl Barba, OriolMés informació
Mehta, Vishal
Owen, Herbert
Vázquez, MarianoMés informació
Oyarzun Altamirano, GuillermoMés informació
Document typeArticle
Defense date2020-06
PublisherElsevier
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
ProjectEXCELLERAT - The European Centre of Excellence for Engineering Applications (EC-H2020-823691)
Exa-FireFlows - Exascale framework for supporting high-fidelity simulations of multiphase reacting flows in complex geometries (EC-H2020-846139)
METODOS DE ALTA PRECISION PARA EL DISEÑO DE AERONAVES DE NUEVA GENERACION (AEI-TRA2017-88508-R)
Abstract
High fidelity Computational Fluid Dynamics simulations are generally associated with large computing requirements, which are progressively acute with each new generation of supercomputers. However, significant research efforts are required to unlock the computing power of leading-edge systems, currently referred to as pre-Exascale systems, based on increasingly complex architectures. In this paper, we present the approach implemented in the computational mechanics code Alya. We describe in detail the parallelization strategy implemented to fully exploit the different levels of parallelism, together with a novel co-execution method for the efficient utilization of heterogeneous CPU/GPU architectures. The latter is based on a multi-code co-execution approach with a dynamic load balancing mechanism. The assessment of the performance of all the proposed strategies has been carried out for airplane simulations on the POWER9 architecture accelerated with NVIDIA Volta V100 GPUs.
CitationBorrell, R. [et al.]. Heterogeneous CPU/GPU co-execution of CFD simulations on the POWER9 architecture: Application to airplane aerodynamics. "Future Generation Computer Systems", Juny 2020, vol. 107, p. 31-48. 
URIhttp://hdl.handle.net/2117/187527
DOI10.1016/j.future.2020.01.045
ISSN0167-739X
Publisher versionhttps://www.sciencedirect.com/science/article/abs/pii/S0167739X1930994X#!
Other identifiershttps://arxiv.org/abs/2005.05899
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