The Design of OpenMP Tasks

OpenMP has been very successful in exploiting structured parallelism in applications. With increasing application complexity, there is a growing need for addressing irregular parallelism in the presence of complicated control structures. This is evident in various efforts by the industry and researc...

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Veröffentlicht in:	IEEE transactions on parallel and distributed systems Jg. 20; H. 3; S. 404 - 418
Hauptverfasser:	Ayguade, E., Copty, N., Duran, A., Hoeflinger, J., Yuan Lin, Massaioli, F., Teruel, X., Unnikrishnan, P., Guansong Zhang
Format:	Journal Article Verlag
Sprache:	Englisch
Veröffentlicht:	New York IEEE 01.03.2009 The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Schlagworte:	Adaptive mesh refinement and parallel languages Application program interfaces Application software Arquitectura de computadors Arquitectures paral·leles Communities Computational complexity Computer Society Concurrent Concurrent computing Concurrent Programming Concurrent programming structures Design engineering distributed Flexibility Formal specification Indexing Informàtica Mathematical models OpenMP Parallel processing Parallel programming Parallel programming (Computer science) Programació en paral·lel (Informàtica) Prototypes Scalability Specifications Studies Sun Systems analysis Tasks Àrees temàtiques de la UPC Concurrent Programming distributed and parallel languages Concurrent Concurrent programming structures
ISSN:	1045-9219, 1558-2183
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Abstract	OpenMP has been very successful in exploiting structured parallelism in applications. With increasing application complexity, there is a growing need for addressing irregular parallelism in the presence of complicated control structures. This is evident in various efforts by the industry and research communities to provide a solution to this challenging problem. One of the primary goals of OpenMP 3.0 is to define a standard dialect to express and efficiently exploit unstructured parallelism. This paper presents the design of the OpenMP tasking model by members of the OpenMP 3.0 tasking sub-committee which was formed for this purpose. The paper summarizes the efforts of the sub-committee (spanning over two years) in designing, evaluating and seamlessly integrating the tasking model into the OpenMP specification. In this paper, we present the design goals and key features of the tasking model, including a rich set of examples and an in-depth discussion of the rationale behind various design choices. We compare a prototype implementation of the tasking model with existing models, and evaluate it on a wide range of applications. The comparison shows that the OpenMP tasking model provides expressiveness, flexibility, and huge potential for performance and scalability.
AbstractList	In this paper, we present the design goals and key features of the tasking model, including a rich set of examples and an in-depth discussion of the rationale behind various design choices. OpenMP has been very successful in exploiting structured parallelism in applications. With increasing application complexity, there is a growing need for addressing irregular parallelism in the presence of complicated control structures. [abstract truncated by publisher]. OpenMP has been very successful in exploiting structured parallelism in applications. With increasing application complexity, there is a growing need for addressing irregular parallelism in the presence of complicated control structures. This is evident in various efforts by the industry and research communities to provide a solution to this challenging problem. One of the primary goals of OpenMP 3.0 is to define a standard dialect to express and efficiently exploit unstructured parallelism. This paper presents the design of the OpenMP tasking model by members of the OpenMP 3.0 tasking sub-committee which was formed for this purpose. The paper summarizes the efforts of the sub-committee (spanning over two years) in designing, evaluating and seamlessly integrating the tasking model into the OpenMP specification. In this paper, we present the design goals and key features of the tasking model, including a rich set of examples and an in-depth discussion of the rationale behind various design choices. We compare a prototype implementation of the tasking model with existing models, and evaluate it on a wide range of applications. The comparison shows that the OpenMP tasking model provides expressiveness, flexibility, and huge potential for performance and scalability. OpenMP has been very successful in exploiting structured parallelism in applications. With increasing application complexity, there is a growing need for addressing irregular parallelism in the presence of complicated control structures. This is evident in various efforts by the industry and research communities to provide a solution to this challenging problem. One of the primary goals of OpenMP 3.0 is to define a standard dialect to express and efficiently exploit unstructured parallelism. This paper presents the design of the OpenMP tasking model by members of the OpenMP 3.0 tasking sub-committee which was formed for this purpose. The paper summarizes the efforts of the sub-committee (spanning over two years) in designing, evaluating and seamlessly integrating the tasking model into the OpenMP specification. In this paper, we present the design goals and key features of the tasking model, including a rich set of examples and an in-depth discussion of the rationale behind various design choices. We compare a prototype implementation of the tasking model with existing models, and evaluate it on a wide range of applications. The comparison shows that the OpenMP tasking model provides expressiveness, flexibility, and huge potential for performance and scalability. Peer Reviewed
Author	Teruel, X. Ayguade, E. Copty, N. Duran, A. Hoeflinger, J. Guansong Zhang Massaioli, F. Yuan Lin Unnikrishnan, P.
Author_xml	– sequence: 1 givenname: E. surname: Ayguade fullname: Ayguade, E. organization: Dept. d'Arquitectura de Computadors, Univ. Politec. de Catalunya, Barcelona, Spain – sequence: 2 givenname: N. surname: Copty fullname: Copty, N. organization: Sun Microsyst., Inc., Santa Clara, CA, USA – sequence: 3 givenname: A. surname: Duran fullname: Duran, A. organization: Dept. d'Arquitectura de Computadors, Univ. Politec. de Catalunya, Barcelona, Spain – sequence: 4 givenname: J. surname: Hoeflinger fullname: Hoeflinger, J. organization: Intel, Champaign, IL, USA – sequence: 5 surname: Yuan Lin fullname: Yuan Lin organization: Sun Microsyst., Inc., Santa Clara, CA, USA – sequence: 6 givenname: F. surname: Massaioli fullname: Massaioli, F. organization: CASPUR, Rome, Italy – sequence: 7 givenname: X. surname: Teruel fullname: Teruel, X. organization: Dept. d'Arquitectura de Computadors, Univ. Politec. de Catalunya, Barcelona, Spain – sequence: 8 givenname: P. surname: Unnikrishnan fullname: Unnikrishnan, P. organization: IBM Toronto Software Lab., Toronto, ON, Canada – sequence: 9 surname: Guansong Zhang fullname: Guansong Zhang organization: IBM Toronto Software Lab., Toronto, ON, Canada
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SubjectTerms	Adaptive mesh refinement and parallel languages Application program interfaces Application software Arquitectura de computadors Arquitectures paral·leles Communities Computational complexity Computer Society Concurrent Concurrent computing Concurrent Programming Concurrent programming structures Design engineering distributed Flexibility Formal specification Indexing Informàtica Mathematical models OpenMP Parallel processing Parallel programming Parallel programming (Computer science) Programació en paral·lel (Informàtica) Prototypes Scalability Specifications Studies Sun Systems analysis Tasks Àrees temàtiques de la UPC
Title	The Design of OpenMP Tasks
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