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106 lines
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<!-- This manual is for FFTW
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(version 3.3.10, 10 December 2020).
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Copyright (C) 2003 Matteo Frigo.
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Copyright (C) 2003 Massachusetts Institute of Technology.
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Permission is granted to make and distribute verbatim copies of this
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manual provided the copyright notice and this permission notice are
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preserved on all copies.
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Permission is granted to copy and distribute modified versions of this
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Permission is granted to copy and distribute translations of this manual
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<title>FFTW MPI Installation (FFTW 3.3.10)</title>
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<meta name="description" content="FFTW MPI Installation (FFTW 3.3.10)">
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<link href="index.html" rel="start" title="Top">
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<link href="Concept-Index.html" rel="index" title="Concept Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Distributed_002dmemory-FFTW-with-MPI.html" rel="up" title="Distributed-memory FFTW with MPI">
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<link href="Linking-and-Initializing-MPI-FFTW.html" rel="next" title="Linking and Initializing MPI FFTW">
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<span id="FFTW-MPI-Installation"></span><div class="header">
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<p>
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Next: <a href="Linking-and-Initializing-MPI-FFTW.html" accesskey="n" rel="next">Linking and Initializing MPI FFTW</a>, Previous: <a href="Distributed_002dmemory-FFTW-with-MPI.html" accesskey="p" rel="prev">Distributed-memory FFTW with MPI</a>, Up: <a href="Distributed_002dmemory-FFTW-with-MPI.html" accesskey="u" rel="up">Distributed-memory FFTW with MPI</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<span id="FFTW-MPI-Installation-1"></span><h3 class="section">6.1 FFTW MPI Installation</h3>
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<p>All of the FFTW MPI code is located in the <code>mpi</code> subdirectory of
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the FFTW package. On Unix systems, the FFTW MPI libraries and header
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files are automatically configured, compiled, and installed along with
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the uniprocessor FFTW libraries simply by including
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<code>--enable-mpi</code> in the flags to the <code>configure</code> script
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(see <a href="Installation-on-Unix.html">Installation on Unix</a>).
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<span id="index-configure-1"></span>
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</p>
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<p>Any implementation of the MPI standard, version 1 or later, should
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work with FFTW. The <code>configure</code> script will attempt to
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automatically detect how to compile and link code using your MPI
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implementation. In some cases, especially if you have multiple
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different MPI implementations installed or have an unusual MPI
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software package, you may need to provide this information explicitly.
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</p>
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<p>Most commonly, one compiles MPI code by invoking a special compiler
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command, typically <code>mpicc</code> for C code. The <code>configure</code>
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script knows the most common names for this command, but you can
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specify the MPI compilation command explicitly by setting the
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<code>MPICC</code> variable, as in ‘<samp>./configure MPICC=mpicc ...</samp>’.
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<span id="index-mpicc"></span>
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</p>
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<p>If, instead of a special compiler command, you need to link a certain
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library, you can specify the link command via the <code>MPILIBS</code>
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variable, as in ‘<samp>./configure MPILIBS=-lmpi ...</samp>’. Note that if
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your MPI library is installed in a non-standard location (one the
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compiler does not know about by default), you may also have to specify
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the location of the library and header files via <code>LDFLAGS</code> and
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<code>CPPFLAGS</code> variables, respectively, as in ‘<samp>./configure
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LDFLAGS=-L/path/to/mpi/libs CPPFLAGS=-I/path/to/mpi/include ...</samp>’.
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</p>
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</html>
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