Sixth International Workshop on OpenMP IWOMP 2010 -- Enabling Low-Overhead Hybrid MPI/OpenMP Parallelism with MPC -- A ROSE-Based OpenMP 3.0 Research Compiler Supporting Multiple Runtime Libraries -- Binding Nested OpenMP Programs on Hierarchical Memory Architectures -- A Proposal for User-Defined Reductions in OpenMP -- An Extension to Improve OpenMP Tasking Control -- Towards an Error Model for OpenMP -- How OpenMP Applications Get More Benefit from Many-Core Era -- Topology-Aware OpenMP Process Scheduling -- How to Reconcile Event-Based Performance Analysis with Tasking in OpenMP -- Fuzzy Application Parallelization Using OpenMP -- Hybrid Parallel Programming on SMP Clusters Using XPFortran and OpenMP -- A Case for Including Transactions in OpenMP -- OMPCUDA : OpenMP Execution Framework for CUDA Based on Omni OpenMP Compiler.