el="index">Index</a>]</p>
</div>
<hr>
<a name="MPI-Files-and-Data-Types-1"></a>
<h4 class="subsection">6.12.1 MPI Files and Data Types</h4>

<p>All programs using FFTW&rsquo;s MPI support should include its header file:
</p>
<div class="example">
<pre class="example">#include &lt;fftw3-mpi.h&gt;
</pre></div>

<p>Note that this header file includes the serial-FFTW <code>fftw3.h</code>
header file, and also the <code>mpi.h</code> header file for MPI, so you
need not include those files separately.
</p>
<p>You