> there is no way to determine an actual wiring of a processor from the level of code True, however in a multi-processor die software can use information about

> there is no way to determine an actual wiring of a processor from the level of code True, however in a multi-processor die software can use information about heat/voltage/p-/c-states to determine which core it's currently running on. And before you ask - yes, this is used in practice for sophisticated workload distribution across cpu cores in fintech.