[drewg123]

This is a testbed to see what breaks at higher speed. Our normal production platforms are indeed single socket and run at 1/2 this speed. I've identified all kinds of unexpected bottlenecks on this testbed, so it has been worth it.

We invested in NUMA back when Intel was the only game in town, and they refused to give enough IO and memory bandwidth per-socket to scale to 200Gb/s. Then AMD EPYC came along. And even though Naples was single-socket, you had to treat it as NUMA to get performance out of it. With Rome and Milan, you can run them in 1NPS mode and still get good performance, so NUMA is used mainly for forward looking performance testbeds.