Yes, the Opterons are x86 compatible, but the code won't compile on
Ubuntu server amd64, probably because of the explicit target
architecture checks like "#ifdef __i386__"
I successfully compiled the code on a UTCS Linux box and on one of my
own Intel boxes, so I'm not especially motivated to hack the lab to
compile on the Opteron system, though I was curious how the latter
would compare since it has integrated memory controllers and more
memory bandwidth but much smaller on-die L2 caches.