> I really have no idea what kind of system would require 1000 nodes, that couldn't be replaced by 100, 10x larger, nodes instead. Nodes only get so big. Way b

> I really have no idea what kind of system would require 1000 nodes, that couldn't be replaced by 100, 10x larger, nodes instead. Nodes only get so big. Way back when, a quad xeon 4650 v2 was definitely not 2x the throughput of a dual xeon 2690 v2; so you end up with two dual socket systems instead of one quad socket. A quad socket server often costs significantly more than two dual socket servers, and is likely to take longer between order and delivery. There's usually a point where you can still scale up, but scaling out is a better use of resources.