I had the opportunity to meet and speak to Steve Hill, the President of Linux Networx yesterday. Linux Networx builds and sells Linux clusters. They have an impressive client list including the NSA, Los Alamos, and Lawrence Berkeley National Labs. When my students toured the Center 7 data center last year, all they could talk about what the Linux Networx cluster that was being staged and built there. I'm hoping to get out and visit with them soon and find out more about what they're doing.