How to optimize a simple loop?

The loop is simple

void loop(int n, double* a, double const* b)
{
#pragma ivdep
    for (int i = 0; i < n; ++i, ++a, ++b)
        *a *= *b;
}

I am using intel c++ compiler and using #pragma ivdep for optimization currently. Any way to make it perform better like using multicore and vectorization together, or other techniques?