[koobz]

He's not saying software doesn't run well on multiple cores and we need to learn how to program applications that can utilize multiple cores efficiently. That's a software problem. This is a hardware problem.

His argument is that scaling silicon to multiple cores is facing physical barriers. You're no longer getting more cycles, improved transistor density, and decreased power consumption simultaneously. Exponential scaling of cores will not result in exponential scaling of computational throughput because we're facing energy-related tradeoffs.