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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Vydáno v:IEEE transactions on parallel and distributed systems Ročník 20; číslo 3; s. 404 - 418
Hlavní autoři: Ayguade, E., Copty, N., Duran, A., Hoeflinger, J., Yuan Lin, Massaioli, F., Teruel, X., Unnikrishnan, P., Guansong Zhang
Médium: Journal Article Publikace
Jazyk:angličtina
Vydáno: New York IEEE 01.03.2009
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:
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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Shrnutí: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.
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ISSN:1045-9219
1558-2183
DOI:10.1109/TPDS.2008.105