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    Por favor, use este identificador para citar o enlazar este ítem:http://uvadoc.uva.es/handle/10324/29110

    Título
    Using the Xeon Phi platform to run speculatively-parallelized codes
    Autor
    Estébanez, Alvaro
    Llanos Ferraris, Diego RafaelAutoridad UVA Orcid
    González Escribano, ArturoAutoridad UVA Orcid
    Año del Documento
    2017
    Editorial
    Springer
    Descripción
    Producción Científica
    Documento Fuente
    International Journal of Parallel Programming, 45(2), 225-214, April 2017, ISSN 0885-7458
    Résumé
    Intel Xeon Phi accelerators are one of the newest devices used in the field of parallel computing. However, there are comparatively few studies concerning their performance when using most of the existing parallelization techniques. One of them is thread-level speculation, a technique that optimistically tries to extract parallelism of loops without the need of a compile-time analysis that guarantees that the loop can be executed in parallel. In this article we evaluate the performance delivered by an Intel Xeon Phi coprocessor when using a software, state-of-the-art thread-level speculative parallelization library in the execution of well-known benchmarks. We describe both the internal characteristics of the Xeon Phi platform and the particularities of the thread-level speculation library being used as benchmark. Our results show that, although the Xeon Phi delivers a relatively good speedup in comparison with a shared-memory architecture in terms of scalability, the relatively low computing power of its computational units when specific vectorization and SIMD instructions are not fully exploited makes this first generation of Xeon Phi architectures not competitive (in terms of absolute performance) with respect to conventional multicore systems for the execution of speculatively parallelized code.
    Revisión por pares
    SI
    DOI
    10.1007/s10766-016-0421-x
    Patrocinador
    Castilla-Leon Regional Government (VA172A12-2); MICINN (Spain) and the European Union FEDER (MOGECOPP project TIN2011-25639, HomProg-HetSys project TIN2014-58876-P, CAPAP-H5 network TIN2014-53522-REDT).
    Version del Editor
    https://link.springer.com/article/10.1007/s10766-016-0421-x
    Propietario de los Derechos
    Springer
    Idioma
    eng
    URI
    http://uvadoc.uva.es/handle/10324/29110
    Derechos
    openAccess
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    • DEP41 - Artículos de revista [109]
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    Attribution 4.0 InternationalExcepté là où spécifié autrement, la license de ce document est décrite en tant que Attribution 4.0 International

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