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Comment by davidmr | Hacker News Reader

The DOE (and DOD, but with whom I’m less familiar) tends to spread out these purchases over multiple vendors to keep multiple US-based providers able to build and support these machines (and I imagine to keep costs competitive).

The last few acquisitions by ORNL and LANL have been Crays while ANL and LLNL were buying IBM Blue Genes. With this generation, it looks like things have switched. As another poster mentioned, it certainly seems like ANL’s next one will be Cray/Intel. It was going to be based on Knight’s Hill, but Intel cancelling that sort of put the architecture up for grabs.

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I would love to see Intel tweaking the Phi line with asymmetric cores like some ARMs do. Having a couple brawny proper Xeon cores and a bunch of smaller 4-thread cores, all coupled with local HBM (and maybe some dedicated HBM for each core) would make it a very versatile part that, with some tuning in number of cores, cache sizes, HBM size, etc, could cover from low-end server all the way to supercomputing.

I don't think there is much doubt core count will increase on all segments and that asymmetric core tech that's currently used in ARM is pretty cool.

Do HPC-oriented ARMs do that?

I don't see the advantage of mixing Phi and SKX cores. Just use an appropriate balance of different nodes (maybe not all Intel).

It makes sense for multi-node machines, much like we do some tasks mostly on CPUs and others on GPUs within a single node. A processor like this makes much more sense on desktops and general-purpose servers, as most of the time my Xeon cores are doing things an Atom would be perfectly capable of doing at a fraction of the power consumed. This translates into more heat and more cooling. If you consider a Xeon Phi uses 300 Watts for 256 threads, this translates roughly to 1.2 W per thread, which is well within what I would expect from a very puny Atom core. Being able to power down most of my computer while, say, I write this, would be a very nice feature.

Intel knows better than anyone that they need to sell a roadmap, not a chip. Who’s going to put in a large advance order on a bunch of future silicon that may get cancelled as well?

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