This book constitutes the thoroughly refereed post-workshop proceedings of the Third International Workshop on OpenMP, IWOMP 2007, held in Beijing, China, in June 2007.

A Proposal for Task Parallelism in OpenMP.- Support for Fine Grained Dependent Tasks in OpenMP.- Performance Evaluation of a Multi-zone Application in Different OpenMP Approaches.- Transactional Memory and OpenMP.- OpenMP on Multicore Architectures.- Supporting OpenMP on Cell.- CMP Cache Architecture and the OpenMP Performance.- Exploiting Loop-Level Parallelism for SIMD Arrays Using OpenMP.- OpenMP Extensions for Irregular Parallel Applications on Clusters.- Optimization Strategies Using Hybrid MPI+OpenMP Parallelization for Large-Scale Data Visualization on Earth Simulator.- An Investigation on Testing of Parallelized Code with OpenMP.- Loading OpenMP to Cell: An Effective Compiler Framework for Heterogeneous Multi-core Chip.- OpenMP Implementation of Parallel Linear Solver for Reservoir Simulation.- Parallel Data Flow Analysis for OpenMP Programs.- Design and Implementation of OpenMPD: An OpenMP-Like Programming Language for Distributed Memory Systems.- A New Memory Allocation Model for Parallel Search Space Data Structures with OpenMP.- Implementation of OpenMP Work-Sharing on the Cell Broadband Engine Architecture.- Toward an Automatic Code Layout Methodology.- An Efficient OpenMP Runtime System for Hierarchical Architectures.- Problems, Workarounds and Possible Solutions Implementing the Singleton Pattern with C++ and OpenMP.- Web Service Call Parallelization Using OpenMP.- Distributed Implementation of OpenMP Based on Checkpointing Aided Parallel Execution.