A Practical Programming Model for the Multi-Core Era: 3rd by Barbara Chapman, Weimin Zheng, Guang R. Gao, Mitsuhisa Sato,

By Barbara Chapman, Weimin Zheng, Guang R. Gao, Mitsuhisa Sato, Eduard Ayguadé, Dongsheng Wang

This ebook constitutes the completely refereed post-workshop complaints of the 3rd foreign Workshop on OpenMP, IWOMP 2007, held in Beijing, China, in June 2007.

The 14 revised complete papers and eight revised brief papers awarded have been conscientiously reviewed and chosen from 28 submissions. The papers handle all issues with regards to OpenMP, equivalent to OpenMP functionality research and modeling, OpenMP functionality and correctness instruments and proposed OpenMP extensions, in addition to purposes in quite a few domain names, e.g., medical computation, games, special effects, multimedia, details retrieval, optimization, textual content processing, info mining, finance, sign and photograph processing, and numerical solvers.

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Additional info for A Practical Programming Model for the Multi-Core Era: 3rd International Workshop on OpenMP, IWOMP 2007, Beijing, China, June 3-7, 2007 Proceedings

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Scheduling can be performed during runtime, making the approach even more flexible and adaptable. Communication costs should be integrated into the tasks construct to permit their consideration in scheduling. It is also desirable to unify the new construct with the taskq-task work-queueing concept [8]. Further, we are currently working on a plug-in for the Eclipse IDE that visualises the graph of the tasks construct and allows its easy modification. References 1. org/specs/ 2. : Towards OpenMP for Java.

G. [6]. So the question that arises is whether the tasks-task approach and the complier implementation behave as predicted by those results. Further, one wants to evaluate the overhead that might be introduced with the new approach and its implementation. 1 Workload For the workload of the experiments a large number of small programs was generated. Each program essentially consists of one tasks construct. Three parameters are varied for the construction of its code body: 1. Size/Number of task blocks – the tasks constructs contains 5, 6, 7, 10 or 20 task blocks.

The left panel of Fig. 3 plots benchmark Performance Evaluation of a Multi-zone Application 31 timing in seconds as a function of the number of groups at 32 CPUs for the Class B problem size. The notation “Ng ×Nt ” denotes the number of zone groups (Ng ) formed for the first level parallelism and the number of threads (Nt ) for the second level parallelism within each group. In the hybrid MPI+OpenMP version, Ng is the same as the number of MPI processes and Nt is the number of OpenMP threads per MPI process.

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