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Add FFTW3
author Chris Cannam <cannam@all-day-breakfast.com>
date Wed, 20 Mar 2013 15:35:50 +0000
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+<html lang="en">
+<head>
+<title>FFTW MPI Transposes - FFTW 3.3.3</title>
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+<link rel="prev" href="Other-Multi_002ddimensional-Real_002ddata-MPI-Transforms.html#Other-Multi_002ddimensional-Real_002ddata-MPI-Transforms" title="Other Multi-dimensional Real-data MPI Transforms">
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+<a name="FFTW-MPI-Transposes"></a>
+<p>
+Next:&nbsp;<a rel="next" accesskey="n" href="FFTW-MPI-Wisdom.html#FFTW-MPI-Wisdom">FFTW MPI Wisdom</a>,
+Previous:&nbsp;<a rel="previous" accesskey="p" href="Other-Multi_002ddimensional-Real_002ddata-MPI-Transforms.html#Other-Multi_002ddimensional-Real_002ddata-MPI-Transforms">Other Multi-dimensional Real-data MPI Transforms</a>,
+Up:&nbsp;<a rel="up" accesskey="u" href="Distributed_002dmemory-FFTW-with-MPI.html#Distributed_002dmemory-FFTW-with-MPI">Distributed-memory FFTW with MPI</a>
+<hr>
+</div>
+
+<h3 class="section">6.7 FFTW MPI Transposes</h3>
+
+<p><a name="index-transpose-396"></a>
+The FFTW's MPI Fourier transforms rely on one or more <em>global
+transposition</em> step for their communications.  For example, the
+multidimensional transforms work by transforming along some
+dimensions, then transposing to make the first dimension local and
+transforming that, then transposing back.  Because global
+transposition of a block-distributed matrix has many other potential
+uses besides FFTs, FFTW's transpose routines can be called directly,
+as documented in this section.
+
+<ul class="menu">
+<li><a accesskey="1" href="Basic-distributed_002dtranspose-interface.html#Basic-distributed_002dtranspose-interface">Basic distributed-transpose interface</a>
+<li><a accesskey="2" href="Advanced-distributed_002dtranspose-interface.html#Advanced-distributed_002dtranspose-interface">Advanced distributed-transpose interface</a>
+<li><a accesskey="3" href="An-improved-replacement-for-MPI_005fAlltoall.html#An-improved-replacement-for-MPI_005fAlltoall">An improved replacement for MPI_Alltoall</a>
+</ul>
+
+   </body></html>
+