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 e-book 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 deal with all issues concerning OpenMP, akin to OpenMP functionality research and modeling, OpenMP functionality and correctness instruments and proposed OpenMP extensions, in addition to functions in a number of domain names, e.g., medical computation, games, special effects, multimedia, details retrieval, optimization, textual content processing, information mining, finance, sign and photograph processing, and numerical solvers.

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Extra resources 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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4 Performance Results In this section, we present performance results obtained on a large shared memory system. We will first give a brief description of the system and programming support. 1 Testing Environment For our study, we used an SGI Altix 3700BX2 system that is one of the 20 nodes in the Columbia supercomputer installed at NASA Ames Research Center [3]. 6 GHz and containing 9 MB on-chip L3 data cache. Approximately 1 TB of global shared-access memory is provided through the SGI scalable non-uniform memory access flexible (NUMAflex) architecture.

This speculative state should be discarded on an abort or used to update the global state on a successful commit. The two usual approaches to implement data versioning are based on using an undo-log or using buffered updates. Using an undo-log, a transaction applies updates directly to memory locations while logging the necessary information to undo the updates in case of abort. On the contrary, approaches using buffered updates keep the speculative state in a transaction-private buffer until commit time; if the commit succeeds, the original values before the store Transactional Memory and OpenMP 41 instructions are dropped and the speculative stores of the transaction are committed to memory.

Org/futures/ 36 H. Jin, B. Chapman, and L. Huang 5. : Toward Enhancing OpenMP’s Work-Sharing Directives. , Lehner, W. ) Euro-Par 2006. LNCS, vol. 4128, pp. 645–654. Springer, Heidelberg (2006) 6. : Performance Characteristics of the Multi-Zone NAS Parallel Benchmarks. Monien, B. ) J. of Parallel and Distributed Computing, special issue, 66(5), 674 (2006) 7. net/ 8. org/ 9. : Flexible Control Structure for Parallelism in OpenMP. In: European Workshop on OpenMP (EWOMP 1999) (1999) 10. : Compiler Support of the Workqueuing Execution Model for Intel SMP Architectures.

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