I participated in many interesting discussions around exascale at the Newport HPCC conference.
No argument here.The two biggest constraints we face are funding and power. Significant levels of funding – from government and private industry R&D will be required, and wildly innovative approaches are needed if we are going to solve what some believe is an unsolvable power requirement. It’s too early to tell if either of these requirements can be met.
Price tag? By today’s metrics, it’s estimated the first exascale system will have a price tag of around $200 million, and roughly half of that cost will go to memory.