Issues and Implications

This chapter contains sections titled: Why Consider Petaflops Now?, Role of a Petaflops Computer, Side-effect Products, Impact of Exotic Technologies, Performance Versus Efficiency, Programming Paradigms, U.S. Capabilities in Memory Fabrication, Special Widgets, Where to Invest, A Range of Architectures, Far-side Architectures, Latency Hiding Techniques, Long versus Short Latency Machines, SIA Predictions, I/O Scaling