120 lines
9.1 KiB
HTML
120 lines
9.1 KiB
HTML
<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<title>The Performance Test Applications</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
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<link rel="home" href="../index.html" title="Math Toolkit 3.0.0">
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<link rel="up" href="../perf.html" title="Chapter 22. Performance">
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<link rel="prev" href="comparisons.html" title="Comparisons to Other Open Source Libraries">
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<link rel="next" href="../backgrounders.html" title="Chapter 23. Backgrounders">
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</head>
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
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<table cellpadding="2" width="100%"><tr>
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<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../boost.png"></td>
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<td align="center"><a href="../../../../../index.html">Home</a></td>
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<td align="center"><a href="../../../../../libs/libraries.htm">Libraries</a></td>
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<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td>
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<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td>
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<td align="center"><a href="../../../../../more/index.htm">More</a></td>
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<a accesskey="p" href="comparisons.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../perf.html"><img src="../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../backgrounders.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a>
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</div>
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<div class="section">
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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
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<a name="math_toolkit.perf_test_app"></a><a class="link" href="perf_test_app.html" title="The Performance Test Applications">The Performance Test Applications</a>
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</h2></div></div></div>
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<p>
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Under <span class="emphasis"><em>boost-path</em></span>/libs/math/reporting/performance you will
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find some reasonable comprehensive performance test applications for this library.
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</p>
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<p>
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In order to generate the tables you will have seen in this documentation (or
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others for your specific compiler) you need to invoke <code class="computeroutput"><span class="identifier">bjam</span></code>
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in this directory, using a C++11 capable compiler. Note that results extend/overwrite
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whatever is already present in <span class="emphasis"><em>boost-path</em></span>/libs/math/reporting/performance/doc/performance_tables.qbk,
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you may want to delete this file before you begin so as to make a fresh start
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for your particular system.
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</p>
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<p>
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The programs produce results in Boost's Quickbook format which is not terribly
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human readable. If you configure your user-config.jam to be able to build Docbook
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documentation, then you will also get a full summary of all the data in HTML
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format in <span class="emphasis"><em>boost-path</em></span>/libs/math/reporting/performance/html/index.html.
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Assuming you're on a 'nix-like platform the procedure to do this is to first
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install the <code class="computeroutput"><span class="identifier">xsltproc</span></code>, <code class="computeroutput"><span class="identifier">Docbook</span> <span class="identifier">DTD</span></code>,
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and <code class="computeroutput"><span class="identifier">Bookbook</span> <span class="identifier">XSL</span></code>
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packages. Then:
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</p>
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<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
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<li class="listitem">
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Copy <span class="emphasis"><em>boost-path</em></span>/tools/build/example/user-config.jam
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to your home directory.
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</li>
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<li class="listitem">
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Add <code class="computeroutput"><span class="keyword">using</span> <span class="identifier">xsltproc</span>
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<span class="special">;</span></code> to the end of the file (note the
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space surrounding each token, including the final ";", this is
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important!) This assumes that <code class="computeroutput"><span class="identifier">xsltproc</span></code>
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is in your path.
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</li>
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<li class="listitem">
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Add <code class="computeroutput"><span class="keyword">using</span> <span class="identifier">boostbook</span>
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<span class="special">:</span> <span class="identifier">path</span><span class="special">-</span><span class="identifier">to</span><span class="special">-</span><span class="identifier">xsl</span><span class="special">-</span><span class="identifier">stylesheets</span> <span class="special">:</span>
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<span class="identifier">path</span><span class="special">-</span><span class="identifier">to</span><span class="special">-</span><span class="identifier">dtd</span>
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<span class="special">;</span></code> to the end of the file. The <code class="computeroutput"><span class="identifier">path</span><span class="special">-</span><span class="identifier">to</span><span class="special">-</span><span class="identifier">dtd</span></code>
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should point to version 4.2.x of the Docbook DTD, while <code class="computeroutput"><span class="identifier">path</span><span class="special">-</span><span class="identifier">to</span><span class="special">-</span><span class="identifier">xsl</span><span class="special">-</span><span class="identifier">stylesheets</span></code> should point to the folder
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containing the latest XSLT stylesheets. Both paths should use all forward
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slashes even on Windows.
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</li>
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</ul></div>
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<p>
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At this point you should be able to run the tests and generate the HTML summary,
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if GSL, RMath or libstdc++ are present in the compilers path they will be automatically
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tested. For DCDFLIB you will need to place the C source in <span class="emphasis"><em>boost-path</em></span>/libs/math/reporting/performance/third_party/dcdflib.
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</p>
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<p>
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If you want to compare multiple compilers, or multiple options for one compiler,
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then you will need to invoke <code class="computeroutput"><span class="identifier">bjam</span></code>
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multiple times, once for each compiler. Note that in order to test multiple
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configurations of the same compiler, each has to be given a unique name in
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the test program, otherwise they all edit the same table cells. Suppose you
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want to test GCC with and without the -ffast-math option, in this case bjam
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would be invoked first as:
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</p>
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<pre class="programlisting"><span class="identifier">bjam</span> <span class="identifier">toolset</span><span class="special">=</span><span class="identifier">gcc</span> <span class="special">-</span><span class="identifier">a</span> <span class="identifier">cxxflags</span><span class="special">=-</span><span class="identifier">std</span><span class="special">=</span><span class="identifier">gnu</span><span class="special">++</span><span class="number">11</span>
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</pre>
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<p>
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Which would run the tests using default optimization options (-O3), we can
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then run again using -ffast-math:
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</p>
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<pre class="programlisting"><span class="identifier">bjam</span> <span class="identifier">toolset</span><span class="special">=</span><span class="identifier">gcc</span> <span class="special">-</span><span class="identifier">a</span> <span class="identifier">cxxflags</span><span class="special">=</span><span class="char">'-std=gnu++11 -ffast-math'</span> <span class="identifier">define</span><span class="special">=</span><span class="identifier">COMPILER_NAME</span><span class="special">=</span><span class="char">'"GCC with -ffast-math"'</span>
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</pre>
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<p>
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In the command line above, the -a flag forces a full rebuild, and the preprocessor
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define COMPILER_NAME needs to be set to a string literal describing the compiler
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configuration, hence the double quotes - one for the command line, one for
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the compiler.
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</p>
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</div>
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<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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<td align="left"></td>
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<td align="right"><div class="copyright-footer">Copyright © 2006-2021 Nikhar Agrawal, Anton Bikineev, Matthew Borland,
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Paul A. Bristow, Marco Guazzone, Christopher Kormanyos, Hubert Holin, Bruno
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Lalande, John Maddock, Evan Miller, Jeremy Murphy, Matthew Pulver, Johan Råde,
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Gautam Sewani, Benjamin Sobotta, Nicholas Thompson, Thijs van den Berg, Daryle
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Walker and Xiaogang Zhang<p>
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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</p>
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</div></td>
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</tr></table>
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<hr>
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<div class="spirit-nav">
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<a accesskey="p" href="comparisons.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../perf.html"><img src="../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../backgrounders.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a>
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