Title:
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Symmetric rank-k update on clusters of multicore processors with SMPSs
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Author:
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Badia Sala, Rosa Maria; Labarta Mancho, Jesús José; Marjanovic, Vladimir; Martín Huertas, Alberto Francisco; Mayo, Rafael; Quintana-Ortí, Enrique Salvador; Reyes, Ruymán
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors; Universitat Politècnica de Catalunya. Departament de Resistència de Materials i Estructures a l'Enginyeria; Universitat Politècnica de Catalunya. CAP - Grup de Computació d'Altes Prestacions |
Abstract:
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We investigate the use of the SMPSs programming model to leverage task parallelism in the execution of a message-pas
sing implementation of the symmetric rank-
k update on clusters equipped with multicore processors. Our experience shows that the major difficulties to adapt the code to the MPI/SMPSs instance of this programming model
are due to the usage of the conventional column-major layout of matrices in numerical libraries. On the other hand, the experimental results show a considerable increase in the performance and scalability of our solution when compared with the standard options based on the use of a pure MPI approach or a hybrid one that combines MPI/multi-threaded BLAS. |
Abstract:
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Peer Reviewed |
Subject(s):
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-Àrees temàtiques de la UPC::Informàtica::Arquitectura de computadors -Multiprocessors -Linear algebra -ScaLAPACK -Clusters of multi-core processors -SMPSs -Message passing numerical libraries -Multiprocessadors |
Rights:
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Document type:
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Article - Published version Conference Object |
Published by:
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IOS Press
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