Today in the morning, the lab server hung again. It always happened
in the morning, and always was related to running the same script of
mine. But how exactly related --- that I don't know. The admins also
didn't tell me any intelligible except advising not to run too many
processes in parallel. Well, of course, doing nothing is good for the
server, it then won't break for sure. But without knowing a reason,
it's hard to prevent the problem. I saw some processes in
uninterruptible sleep. The internet says it's usually related to NFS
server going down. That might be possible since our home directories
are mapped to each server with NFS. And I had some configurations in
my home folder which might mingle with my script in some obscure way.
