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Task-Parallel Reductions in OpenMP and OmpSs

descriptionPublicationkeyboard_double_arrow_right Part of book or chapter of book , Article , Conference object 01 Jan 2014 Spain English Publisher:Springer International Publishing

Authors: Jan Ciesko; Sergi Mateo; Vicenç Beltran; Xavier Martorell; Xavier Martorell; Eduard Ayguadé; Eduard Ayguadé; +5 Authors

doi: 10.1007/978-3-319-11454-5_1

handle: 10261/132339 , 2117/27925

Task-Parallel Reductions in OpenMP and OmpSs

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Abstract

© Springer International Publishing Switzerland 2014. The wide adoption of parallel processing hardware in mainstream computing as well as the raising interest for efficient parallel programming in the developer community increase the demand for parallel programming model support for common algorithmic patterns. In this work we present an extension to the OpenMP task construct to add support for reductions in while-loops and general-recursive algorithms. Further we discuss implications on the OpenMP standard and present a prototype implementation in OmpSs. Benchmark results confirm applicability of this approach and scalability on current SMP systems.

This work has been developed with the support of the grant SEV-2011-00067 of Severo Ochoa Program, awarded by the Spanish Government and by the Spanish Ministry of Science and Innovation (contracts TIN2012-34557, and CAC2007-00052) by the Generalitat de Catalunya (contract 2009-SGR-980) and the Intel-BSC Exascale Lab collaboration project. Also the authors would like to thank the OpenMP community for their substantial contribution to this work.

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Spain

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Keywords

Parallel processing (Electronic computers), Processament en paral·lel (Ordinadors), Parallel programming, OpenMP, Àrees temàtiques de la UPC::Informàtica::Arquitectura de computadors::Arquitectures paral·leles, OmpSs, Recursive algorithms, Task, Recursion, :Informàtica::Arquitectura de computadors::Arquitectures paral·leles [Àrees temàtiques de la UPC], Reduction

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