StarBED and SpringOS

I didn't know that NICT (National Institute of Information and Communications Technology) has been developing a large scale networking testbed, called StarBED, and the StarBED team developed a set of convenient tools to manage/operate StarBED.
The set of tools is called "Spring OS."

Here, my point is that why the developers chose the name.
At least for me, Spring OS means a SUN's research operating system in the early '90s, and this is common impression for most of engineers working on network or operating system.

But, the tool looks like useful for a massive cluster environment, and I'm going to try it once...