Hardware Trends and Implications for Programming Models

The upcoming years bring new challenges in high-performance computing (HPC) technology. Fundamental changes in the building blocks of HPC hardware are forcing corresponding changes in programming models to effectively use these new architectures. The changes in store for HPC will rival the vector to massively parallel transition that scientific and engineering codes and methodologies endured several years ago. We describe some of the upcoming trends in hardware designs, and suggest ways in which software and programming models will advance accordingly.