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2 <head>
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3 <title>FFTW MPI Installation - FFTW 3.2alpha3</title>
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4 <meta http-equiv="Content-Type" content="text/html">
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5 <meta name="description" content="FFTW 3.2alpha3">
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7 <link title="Top" rel="start" href="index.html#Top">
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8 <link rel="up" href="Distributed_002dmemory-FFTW-with-MPI.html#Distributed_002dmemory-FFTW-with-MPI" title="Distributed-memory FFTW with MPI">
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9 <link rel="prev" href="Distributed_002dmemory-FFTW-with-MPI.html#Distributed_002dmemory-FFTW-with-MPI" title="Distributed-memory FFTW with MPI">
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10 <link rel="next" href="Linking-and-Initializing-MPI-FFTW.html#Linking-and-Initializing-MPI-FFTW" title="Linking and Initializing MPI FFTW">
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11 <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
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12 <!--
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13 This manual is for FFTW
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14 (version 3.2alpha3, 14 August 2007).
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15
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16 Copyright (C) 2003 Matteo Frigo.
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17
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18 Copyright (C) 2003 Massachusetts Institute of Technology.
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19
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20 Permission is granted to make and distribute verbatim copies of
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21 this manual provided the copyright notice and this permission
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22 notice are preserved on all copies.
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23
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24 Permission is granted to copy and distribute modified versions of
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25 this manual under the conditions for verbatim copying, provided
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26 that the entire resulting derived work is distributed under the
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27 terms of a permission notice identical to this one.
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28
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29 Permission is granted to copy and distribute translations of this
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30 manual into another language, under the above conditions for
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31 modified versions, except that this permission notice may be
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32 stated in a translation approved by the Free Software Foundation.
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33 -->
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45 --></style>
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46 </head>
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47 <body>
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48 <div class="node">
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49 <p>
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50 <a name="FFTW-MPI-Installation"></a>
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51 Next: <a rel="next" accesskey="n" href="Linking-and-Initializing-MPI-FFTW.html#Linking-and-Initializing-MPI-FFTW">Linking and Initializing MPI FFTW</a>,
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52 Previous: <a rel="previous" accesskey="p" href="Distributed_002dmemory-FFTW-with-MPI.html#Distributed_002dmemory-FFTW-with-MPI">Distributed-memory FFTW with MPI</a>,
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53 Up: <a rel="up" accesskey="u" href="Distributed_002dmemory-FFTW-with-MPI.html#Distributed_002dmemory-FFTW-with-MPI">Distributed-memory FFTW with MPI</a>
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54 <hr>
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55 </div>
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56
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57 <h3 class="section">6.1 FFTW MPI Installation</h3>
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58
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59 <p>All of the FFTW MPI code is located in the <code>mpi</code> subdirectory of
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60 the FFTW package. On Unix systems, the FFTW MPI libraries and header
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61 files are automatically configured, compiled, and installed along with
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62 the uniprocessor FFTW libraries simply by including
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63 <code>--enable-mpi</code> in the flags to the <code>configure</code> script
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64 (see <a href="Installation-on-Unix.html#Installation-on-Unix">Installation on Unix</a>).
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65 <a name="index-configure-334"></a>
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66 Any implementation of the MPI standard, version 1 or later, should
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67 work with FFTW. The <code>configure</code> script will attempt to
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68 automatically detect how to compile and link code using your MPI
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69 implementation. In some cases, especially if you have multiple
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70 different MPI implementations installed or have an unusual MPI
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71 software package, you may need to provide this information explicitly.
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72
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73 <p>Most commonly, one compiles MPI code by invoking a special compiler
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74 command, typically <code>mpicc</code> for C code. The <code>configure</code>
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75 script knows the most common names for this command, but you can
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76 specify the MPI compilation command explicitly by setting the
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77 <code>MPICC</code> variable, as in `<samp><span class="samp">./configure MPICC=mpicc ...</span></samp>'.
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78 <a name="index-mpicc-335"></a>
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79 If, instead of a special compiler command, you need to link a certain
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80 library, you can specify the link command via the <code>MPILIBS</code>
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81 variable, as in `<samp><span class="samp">./configure MPILIBS=-lmpi ...</span></samp>'. Note that if
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82 your MPI library is installed in a non-standard location (one the
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83 compiler does not know about by default), you may also have to specify
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84 the location of the library and header files via <code>LDFLAGS</code> and
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85 <code>CPPFLAGS</code> variables, respectively, as in `<samp><span class="samp">./configure
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86 LDFLAGS=-L/path/to/mpi/libs CPPFLAGS=-I/path/to/mpi/include ...</span></samp>'.
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87
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88 <!-- -->
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89 </body></html>
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90
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