id</span> RandomPackingEllipsoid(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> **argv) {</div>
<div class="line">  <span class="comment">// mpi initialization</span></div>
<div class="line">  <span class="keywordtype">int</span> self_rank, total_rank;</div>
<div class="line">  MPI_Init(&amp;argc, &amp;argv);</div>
<div class="line">  MPI_Comm_rank(MPI_COMM_WORLD, &amp;self_rank);</div>
<div class="line">  MPI_Comm_size(MPI_COMM_WORLD, &amp;total_rank);</div>
<div class="li