The Third Workshop on Models, Algorithms, and Methodologies for Hierarchical Parallelism in New HPC Systems. Workshop on Power and Energy Aspects of Computation -- Workshop on Scheduling for Parallel Computing (SPC 2015) -- The 6th Workshop on Language-Based Parallel Programming Models (WLPP 2015) -- The 5th Workshop on Performance Evaluation of Parallel Applications on Large-Scale Systems -- Workshop on Parallel Computational Biology (PBC 2015) -- Workshop on Applications of Parallel Computation in Industry and Engineering -- Minisymposium on HPC Applications in Physical Sciences -- The Second Workshop on Applied High Performance Numerical Algorithms in PDEs -- Minisymposium on High Performance Computing Interval Methods -- Workshop on Complex Collective Systems -- Special Session on Algorithms, Methodologies and Frameworks for HPC in Geosciences and Weather Prediction.