The Condor package - http://www.cs.wisc.edu/condor/ - supports
process migration; I think you need to relink binaries to get
full support for some features. Info on the Linux port is
at http://www.cs.wisc.edu/condor/linux/linux.html.
I don't know much about the specifics, but the first URL has
pointers to FAQs, technical documentation, and other info
that could be useful if you're trying to implement this sort
of thing.
Hope this helps,
Sumner
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