title: Armadillo element wise multiplication speed
body: <p>Is element wise multiplication (%) speed in armadillo depends whether LAPACK/BLAS is installed? Im currently running armadillo without them installed and speed is awful.
  Ok here is the simplest code, which takes eternity to calculate</p>
  
  <pre><code>    #include &lt;iostream&gt;
      #include "conio.h"
  
  
      #include "armadillo"
  
      using namespace arma;
      using namespace std;
  
      int main(int argc, char** argv)
      {
  
  
      int n=250; 
      mat X=ones(n,n);
  
      mat quan;
  
  
  
    for (int xi=1;xi&lt;=256;xi++)
    {  
            quan = exp(X)%exp(X);
    }
  
  
  
    getch();
  
  
    return 0;
    }
  </code></pre>