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Exploiting memory affinity in OpenMP through schedule reuse
Nikolopoulos, Dimitrios; Artiaga Amouroux, Ernest; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José
Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors; Universitat Politècnica de Catalunya. CAP - Grup de Computació d´Altes Prestacions
In this paper we explore the possibility of reusing schedules to improve the scalability of numerical codes in shared--memory architectures with non--uniform memory access. The main objective is to implicitly construct affinity links between threads and data accesses and reuse them as much as possible along the execution of the application. These links are created thorugh the definition and reuse of iteration schedules statically defined by the user or dinamically created at run time. The paper does not include a formal proposal of OpenMP extensions but includes some experiments showing the usefulness of constructing affinity links in some irregular codes.
Peer Reviewed
Àrees temàtiques de la UPC::Informàtica
Àrees temàtiques de la UPC::Informàtica::Arquitectura de computadors::Arquitectures paral·leles
OpenMP
Parallel programming (Computer science)
OpenMP
Programació en paral·lel (Informàtica)
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
info:eu-repo/semantics/publishedVersion
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