I can't remember the name of the person, but he used to work for a
European research lab and had made a 64-bit version of an operating
system derived from Plan 9. That operating system had some interesting
features, one of which was the ability to isolate a process on a single
core of a CPU.

Does anyone have more details about that operating system? Or would
anyone know the name of that person?
It would be nice to work with that operating system and I would be
willing to pay a license fee to use it if granted access to the source
for personal study.

Thanks,

~Mayuresh