Virtualization accross hardware border

[Wolfgang Mader <Wolfgang_Mader@xxxxxxxxxxxxx>]

Dear list,

if I understand the offering of Amazons cloud service correctly, there, 
you can install an OS, say arch, on a virtualized machine and scale CPU, 
RAM, etc. freely up and down just as you need it. While I can to this 
using e.g. KVM+qemu on a single machine, I want to be able to bind 
together a bunch of machines such that they appear as a single big 
machine. Is there a way to do this? I my question clear enought to be 
answered?

Thanks,
Wolfgang