How to guarantee the execution of two threads on two cores?

Question

Parallel Computing

In the program using the directives
#pragma omp parallel sections
#pragma omp section
....
#pragma omp section
.....
I manually divide the program into two threads. How to guarantee the execution of two threads on two cores? Can this be done with other directives?

Answer 1

I don't remember it and most likely it just doesn't exist.
That is, if I don't confuse anything, OpenMP is an add-on for pthread, and the latter are initially designed for multi-core systems. Unlike Windows threads, originally aimed at user computers, where the processor had only one core.
Plus, OpenMP doesn't even have a thread priority setting.