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 lawsuits of the 3rd overseas Workshop on OpenMP, IWOMP 2007, held in Beijing, China, in June 2007.

The 14 revised complete papers and eight revised brief papers offered have been conscientiously reviewed and chosen from 28 submissions. The papers deal with all themes concerning OpenMP, equivalent to OpenMP functionality research and modeling, OpenMP functionality and correctness instruments and proposed OpenMP extensions, in addition to purposes in a variety of domain names, e.g., clinical computation, games, special effects, multimedia, details retrieval, optimization, textual content processing, information mining, finance, sign and photo processing, and numerical solvers.

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Extra 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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The “static” schedule without chunk size (the last bar in the graph) shows its limitation in dealing with unbalanced workload and is as much as 50% worse than the “dynamic,1” schedule. The “static,1” (or cyclic) schedule improves the performance but not sufficiently. 2 Workload Ordering on Performance As noted in the benchmark description, the zone workload in BT-MZ was designed to be uneven. Class B contains 64 zones whose sizes, shown in Fig. 6 on the left, range from 3K to 60K mesh points. The right graph in Fig.

Those macros should use the proper hardware 48 M. Milovanovi´c et al.

Task can create new tasks and can also be nested inside worksharing constructs. In this scenario, data access ordering and synchronization based on locks will be even more difficult to express, so transactions appear as an easy way to express intent and leave the mechanisms to the TM implementation. For tasks we propose the possibility of tagging a task as a transaction, using the same clause specified above. 4 Nebelung Library Interface and Behavior In order to have a complete execution environment supporting transactional memory, we have implemented our own STM library, named Nebelung.

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