Thanks for the additional info. And I don't disagree with anything you said. However, for any concerns with computation between 10 and 800 Petaflops, I would c

Thanks for the additional info. And I don't disagree with anything you said. However, for any concerns with computation between 10 and 800 Petaflops, I would consider them "super"-petascale (with below 10 being Petascale, above 800 being Exascale). Summit is clearly an Exascale machine. I looked at Cori and I was surprised to find out that it has no mention of GPU in the specs, despite the project starting as late as 2015. I personally think trying to scale up CPU-only supercomputers in a super-Petascale era is a losing battle, but that's just my 0.02.