consult the documentation for the MPI implementation. This routine examines the <code class="computeroutput">MPI_HOST</code> attribute of <code class="computeroutput">MPI_COMM_WORLD</code>.</p>
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<td><p><span class="term">Returns:</span></p></td>
<td><p>The rank of the host process, if one exists. </p></td>
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<pre class="literallayout"><span class="keyword">s