Topographica: Serial vs Parallel on 1 core

  <run n='100' m='100' iterations='1000' cpu_cores='1' density='10000'>
    <sim_tot_mpi name='Simulation total'>214.378264904</sim_tot_mpi>
    <sim_tot_seq name='Simulation total'>212.18565011</sim_tot_seq>
  </run>

it doesn't look like PMI/mpi4py adds much static overhead.