OpenMP Schedule Sample

test.cpp

#include <cstdio>
#include <omp.h>

const int N = 8;
int d[N] = {};

int main() {
  int tid;
#pragma omp parallel for schedule(static)
  for (int i = 0; i < N; i++) {
    tid = omp_get_thread_num();
    for (int j = 0; j < 1000; j++) {
      d[i] += tid;
    }
  }
  for (int i = 0; i < N; i++) {
    printf("%d %d\n", i, d[i]);
  }
}

I forgot private(tid).

#pragma omp parallel for schedule(static) private(tid)

This is the reason why the behaviours between g++ and icpc werr different.