Productivity and scalability challenges in nano-scale technology

This paper presents the challenges posed by the advancements in technology, specially in the field of nano-technology. The main challenges are within the scope of productivity and scalability. Productivity requires the utilization of high performance and high productivity systems and programming models with global view. Scalability requires the use of programming models with high level of abstraction such as the unified parallel C (UPC) and coarray Fortran (CAF).