title: SuperLU Distributed - Slow
body: <p>I'm here again for SuperLU_distributed solver issue.</p>
  
  <p>Since I've noticed that parallel version of my algorith was running very slow, I tried to simply run test programs (pddrive) saved in my build/EXAMPLE folder, compiled by SuperLU during its installation.</p>
  
  <p>I've noticed that, while running with mpirun -n 1 gives good time in solving, if I increase number of processes time become very slow (more I increase processes more it slows down).</p>
  
  <p>It looks strange since it is the test program of SuperLU with no modifications.</p>
  
  <p>Have anyone had a similar trouble?</p>
  
  <p>thank you
  Simone</p>