Employing nested OpenMP for the parallelization of multi-zone computational fluid dynamics applications

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Title:	Employing nested OpenMP for the parallelization of multi-zone computational fluid dynamics applications
Author:	Ayguadé Parra, Eduard; González Tallada, Marc; Martorell Bofill, Xavier; Jost, G
Other authors:	Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors; Universitat Politècnica de Catalunya. CAP - Grup de Computació d'Altes Prestacions
Abstract:	In this paper we describe the parallelization of the multi-zone code versions of the NAS Parallel Benchmarks employing multi-level OpenMP parallelism. For our study, we use the NanosCompiler that supports nesting of OpenMP directives and provides clauses to control the grouping of threads, load balancing, and synchronization. We report the benchmark results, compare the timings with those of different hybrid parallelization paradigms (MPI+OpenMP and MLP) and discuss OpenMP implementation issues that affect the performance of multi-level parallel applications.
Abstract:	Peer Reviewed
Subject(s):	-Àrees temàtiques de la UPC::Informàtica -Àrees temàtiques de la UPC::Informàtica::Arquitectura de computadors::Arquitectures paral·leles -OpenMP -Parallel programming (Computer science) -OpenMP -Parallel programming models -Nested parallelism -NAS benchmarks -OpenMP -Programació en paral·lel (Informàtica)
Rights:	Attribution-NonCommercial-NoDerivs 3.0 Spain http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Document type:	Article - Published version Article
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