Automatic multilevel parallelization using OpenMP

Authors:
Haoqiang Jin;Gabriele Jost;Jerry Yan;Eduard Ayguade;Marc Gonzalez;Xavier Martorell
Affiliations:
NAS Division, NASA Ames Research Center, Moffett Field, CA 94035-1000, USA;NAS Division, NASA Ames Research Center, Moffett Field, CA 94035-1000, USA (Correspd. GJost@nAS.nASA.gov);NAS Division, NASA Ames Research Center, Moffett Field, CA 94035-1000, USA;Centre Europeu de Parallelism de Barcelona, Computer Architecture Department (UPC), cr.Jordi Girona 1-3, Modul D6,08034 - Barcelona, Spain;Centre Europeu de Parallelism de Barcelona, Computer Architecture Department (UPC), cr.Jordi Girona 1-3, Modul D6,08034 - Barcelona, Spain;Centre Europeu de Parallelism de Barcelona, Computer Architecture Department (UPC), cr.Jordi Girona 1-3, Modul D6,08034 - Barcelona, Spain
Venue:
Scientific Programming - OpenMP
Year:
2003

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Abstract

In this paper we describe the extension of the CAPO parallelization support tool to support multilevel parallelism based on OpenMP directives. CAPO generates OpenMP directives with extensions supported by the NanosCompiler to allow for directive nesting and definition of thread groups. We report some results for several benchmark codes and one full application that have been parallelized using our system.