如何让 OpenMP 线程或任务在某个核心上运行

export OMP_PROC_BIND=spread

export OMP_PROC_BIND=close

#include<stdio.h>
#include <stdlib.h>
#include <omp.h>

int main() {
    int num_threads = 4;
    omp_set_num_threads(num_threads);

    #pragma omp parallel
    {
        int thread_num = omp_get_thread_num();
        int num_procs = omp_get_num_procs();
        int core_id = thread_num % num_procs;
        int num_threads = omp_get_num_threads();
        int mask = 1<< core_id;

        omp_set_affinity(mask);

        printf("Thread %d running on core %d\n", thread_num, core_id);
    }

    return 0;
}