1G数据在入门双核中运行

#include <algorithm>
#include <vector>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <windows.h>
using namespace std;
#define SIZE 1024 * 1024 * 1024

int main()
{
 LARGE_INTEGER start;
    LARGE_INTEGER end;
    LARGE_INTEGER freq;

    QueryPerformanceFrequency(&freq);

   

 vector<int> vec(SIZE/sizeof(int));

 srand( time(NULL) );

 for (int i = 0; i < vec.size(); ++i)
   vec[i] = rand();

 printf("sorting %d elements\n", vec.size());

 QueryPerformanceCounter(&start);
 sort(vec.begin(), vec.end());
 QueryPerformanceCounter(&end);

 
 printf("user time : %.10f seconds\n", (double)(end.QuadPart - start.QuadPart) / (double)freq.QuadPart);

 return 0;
}

CPU T2450 2.0GHZ ， 内存2G，直接运行了15分半钟，吊丝的电脑伤不起啊。。。