[Beowulf] Question: Who has apps that regularly swap?

[Jeffrey B. Layton]

Hello,

  I've been wanting to ask this question for some time. I'm wondering
who has apps that regularly swap? Is it because the nodes don't have
enough memory (i.e. haven't filled up all of the slots) or because the
app just uses a lot of memory? Is it only when the app starts up, shuts
down, or periodically when it is running?

Thanks!

Jeff