"Scaling up to ... 512 CPU's is pretty damn studly," said Torvalds said in an e-mail interview. "Putting twenty of them in a cluster and making them be programmable as a single machine is pretty hot."
Torvalds then snort-laughed and shyly looked away.
Linux creator Linus Torvalds applauded the team's success at using Linux in such large nodes. The operating system typically is used in much smaller nodes of 2 to 8 processors.
I didn't get a chance to read yet, but ctrl+f returned this. So he's involved.