static void func_pararel_test()
{
auto start = chrono::system_clock::now();
auto end = chrono::system_clock::now();
chrono::duration<double> elapsed_1, elapsed_2;
#pragma omp parallel
{
printf("parallel\n");
}
const int size = 10000;
array<char,size * 10> data;
int i;
for (int loop_num = 0; loop_num < 10; loop_num++)
{
start = chrono::system_clock::now();
{
#pragma omp parallel for
for (i = 0; i < size; i++)
{
for (int j = 0; j < 10; j++)
{
data[i*j] = sin(i*j);
}
}
}
end = chrono::system_clock::now();
elapsed_1 = end - start;
start = chrono::system_clock::now();
{
for (i = 0; i < size; i++)
{
for (int j = 0; j < 10; j++)
{
data[i*j] = sin(i*j);
}
}
}
end = chrono::system_clock::now();
elapsed_2 = end - start;
cout << elapsed_1.count() << ":" << elapsed_2.count() << endl;
}
}