Running code on an isolated core

Hi,

I am looking into running a program on one of the cores which is isolated
(logically offline )
from the rest of the cores. I have come to that the command
echo 0 > /sys/device/system/cpu/<core num>/online

will make a core logically offline,
What I need to do now is to run a program on this offline core. Please
suggest on how to proceed.

Thanks!
Vaibhav Jain
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