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Add null config files
author Chris Cannam <cannam@all-day-breakfast.com>
date Mon, 02 Mar 2020 14:03:47 +0000
parents 7867fa7e1b6b
children
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cannam@127 3 <!-- This manual is for FFTW
cannam@127 4 (version 3.3.5, 30 July 2016).
cannam@127 5
cannam@127 6 Copyright (C) 2003 Matteo Frigo.
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cannam@127 8 Copyright (C) 2003 Massachusetts Institute of Technology.
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cannam@127 24 <head>
cannam@127 25 <title>FFTW 3.3.5: FFTW MPI Installation</title>
cannam@127 26
cannam@127 27 <meta name="description" content="FFTW 3.3.5: FFTW MPI Installation">
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cannam@127 35 <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
cannam@127 36 <link href="Distributed_002dmemory-FFTW-with-MPI.html#Distributed_002dmemory-FFTW-with-MPI" rel="up" title="Distributed-memory FFTW with MPI">
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cannam@127 70
cannam@127 71 <body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
cannam@127 72 <a name="FFTW-MPI-Installation"></a>
cannam@127 73 <div class="header">
cannam@127 74 <p>
cannam@127 75 Next: <a href="Linking-and-Initializing-MPI-FFTW.html#Linking-and-Initializing-MPI-FFTW" accesskey="n" rel="next">Linking and Initializing MPI FFTW</a>, Previous: <a href="Distributed_002dmemory-FFTW-with-MPI.html#Distributed_002dmemory-FFTW-with-MPI" accesskey="p" rel="prev">Distributed-memory FFTW with MPI</a>, Up: <a href="Distributed_002dmemory-FFTW-with-MPI.html#Distributed_002dmemory-FFTW-with-MPI" accesskey="u" rel="up">Distributed-memory FFTW with MPI</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
cannam@127 76 </div>
cannam@127 77 <hr>
cannam@127 78 <a name="FFTW-MPI-Installation-1"></a>
cannam@127 79 <h3 class="section">6.1 FFTW MPI Installation</h3>
cannam@127 80
cannam@127 81 <p>All of the FFTW MPI code is located in the <code>mpi</code> subdirectory of
cannam@127 82 the FFTW package. On Unix systems, the FFTW MPI libraries and header
cannam@127 83 files are automatically configured, compiled, and installed along with
cannam@127 84 the uniprocessor FFTW libraries simply by including
cannam@127 85 <code>--enable-mpi</code> in the flags to the <code>configure</code> script
cannam@127 86 (see <a href="Installation-on-Unix.html#Installation-on-Unix">Installation on Unix</a>).
cannam@127 87 <a name="index-configure-1"></a>
cannam@127 88 </p>
cannam@127 89
cannam@127 90 <p>Any implementation of the MPI standard, version 1 or later, should
cannam@127 91 work with FFTW. The <code>configure</code> script will attempt to
cannam@127 92 automatically detect how to compile and link code using your MPI
cannam@127 93 implementation. In some cases, especially if you have multiple
cannam@127 94 different MPI implementations installed or have an unusual MPI
cannam@127 95 software package, you may need to provide this information explicitly.
cannam@127 96 </p>
cannam@127 97 <p>Most commonly, one compiles MPI code by invoking a special compiler
cannam@127 98 command, typically <code>mpicc</code> for C code. The <code>configure</code>
cannam@127 99 script knows the most common names for this command, but you can
cannam@127 100 specify the MPI compilation command explicitly by setting the
cannam@127 101 <code>MPICC</code> variable, as in &lsquo;<samp>./configure MPICC=mpicc ...</samp>&rsquo;.
cannam@127 102 <a name="index-mpicc"></a>
cannam@127 103 </p>
cannam@127 104
cannam@127 105 <p>If, instead of a special compiler command, you need to link a certain
cannam@127 106 library, you can specify the link command via the <code>MPILIBS</code>
cannam@127 107 variable, as in &lsquo;<samp>./configure MPILIBS=-lmpi ...</samp>&rsquo;. Note that if
cannam@127 108 your MPI library is installed in a non-standard location (one the
cannam@127 109 compiler does not know about by default), you may also have to specify
cannam@127 110 the location of the library and header files via <code>LDFLAGS</code> and
cannam@127 111 <code>CPPFLAGS</code> variables, respectively, as in &lsquo;<samp>./configure
cannam@127 112 LDFLAGS=-L/path/to/mpi/libs CPPFLAGS=-I/path/to/mpi/include ...</samp>&rsquo;.
cannam@127 113 </p>
cannam@127 114
cannam@127 115
cannam@127 116
cannam@127 117 </body>
cannam@127 118 </html>