Frontier is going to be an AMD-GPU for sure. Whether its MI100 or the next generation MI200 is still not really known and subject to rumors. I'm currently under the assumption that its MI100 however, but now that you press me on that detail I admit that I'm somewhat assuming. Frontier will be using ROCm in any case.
El Capitan (Lawrence Rivermore National Labs) is MI100 and specified as such. So I'll "retreat" my argument to that more easily verified position. Still a top supercomputer in the world, and more is known about El Capitan than Frontier.
Yes, I agree with the basic point. Where is the spec for El Capitain, then? I don't remember ever finding it, and I rather assumed it would wait for possible lessons from the Frontier hardware.
It's possibly worth saying that these things presumably are competitive with nvlink-based multi-GPU, and appear to support unified memory, but I don't know how that compares with ac922s. Not that UM is relevant for what I know of usage on our system....
I have plenty of links, but they're all from non-primary source newsites, like servethehome or (worse) wcftech. Those are more "casual" blogs that aren't worth quoting IMO and are closer to rumormills (even if they sometimes have good information).
I can't find a single spec from AMD's website or ORNL, or the Department of Energy (primary sources: the ones we know would tell the truth on this matter).
Which is an MI100 test that ORNLs did in "preparation" for Frontier. It doesn't seem like Frontier nor El Capitan have had their specs officially released yet.
