How to set that a particular thread always be executed by a specific core in multi-core Linux environment?

Answer 1

I definitely don't know much on the subject but a quick Google search turned up the following which could be helpful.

http://www.glennklockwood.com/hpc-howtos/process-affinity.html

You can probably use that as a starting point for a more detailed search on the information you need. I've normally heard this feature referred to as processor/core affinity which might be a good keyword to search on.

Comments

The following may also be interesting. Hopefully you can take it from here.

http://man7.org/linux/man-pages/man2/sched_setaffinity.2.html