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000838787 1001_ $$0P:(DE-Juel1)166193$$aKüsters, Anne$$b0$$eCorresponding author
000838787 1112_ $$aISC High Performance 2017$$cFrankfurt/Main$$d2017-06-18 - 2017-06-22$$wGermany
000838787 245__ $$aPerformance Portability Analysis for Real-Time Simulations of Smoke Propagation Using OpenACC
000838787 260__ $$aCham$$bSpringer International Publishing$$c2017
000838787 29510 $$aHigh Performance Computing / Kunkel, Julian M. (Editor), Chapter 35 ; ISSN: 0302-9743=1611-3349 ; ISBN: 978-3-319-67629-6=978-3-319-67630-2
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000838787 4900_ $$aLecture Notes in Computer Science$$v10524
000838787 520__ $$aReal-time simulations of smoke propagation during fires in complex geometries challenge engineers, physicists, mathematicians and computer scientists due to the complexity of fluid dynamics and the large number of involved physical and chemical processes. Recently, several application scenarios emerged that require real-time predictions during an incident to support the rescue teams. Therefore, we develop the CFD-based simulation software JuROr aiming to run in real-time by leveraging parallel computer architectures like CPUs and GPUs. For that, we parallelize the code with OpenACC directives that promise maintenance of a single source base by delegating some architecture-agnostic optimizations to the compiler. We investigate the performance portability of JuROr using PGI’s OpenACC implementation across four Intel CPUs and three NVIDIA GPUs. We present the achieved performance shares as part of a roofline model where we focus on traditionally-computed arithmetic code intensities, as well as on a measurement approach based on performance counters.
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000838787 7001_ $$0P:(DE-Juel1)132044$$aWienke, Sandra$$b1
000838787 7001_ $$0P:(DE-Juel1)132044$$aArnold, Lukas$$b2$$ufzj
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