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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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- <p>
- Under <span class="emphasis"><em>boost-path</em></span>/libs/math/reporting/performance you will
- find some reasonable comprehensive performance test applications for this library.
- </p>
- <p>
- In order to generate the tables you will have seen in this documentation (or
- others for your specific compiler) you need to invoke <code class="computeroutput"><span class="identifier">bjam</span></code>
- in this directory, using a C++11 capable compiler. Note that results extend/overwrite
- whatever is already present in <span class="emphasis"><em>boost-path</em></span>/libs/math/reporting/performance/doc/performance_tables.qbk,
- you may want to delete this file before you begin so as to make a fresh start
- for your particular system.
- </p>
- <p>
- The programs produce results in Boost's Quickbook format which is not terribly
- human readable. If you configure your user-config.jam to be able to build Docbook
- documentation, then you will also get a full summary of all the data in HTML
- format in <span class="emphasis"><em>boost-path</em></span>/libs/math/reporting/performance/html/index.html.
- Assuming you're on a 'nix-like platform the procedure to do this is to first
- 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>,
- and <code class="computeroutput"><span class="identifier">Bookbook</span> <span class="identifier">XSL</span></code>
- packages. Then:
- </p>
- <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
- <li class="listitem">
- Copy <span class="emphasis"><em>boost-path</em></span>/tools/build/example/user-config.jam
- to your home directory.
- </li>
- <li class="listitem">
- Add <code class="computeroutput"><span class="keyword">using</span> <span class="identifier">xsltproc</span>
- <span class="special">;</span></code> to the end of the file (note the
- space surrounding each token, including the final ";", this is
- important!) This assumes that <code class="computeroutput"><span class="identifier">xsltproc</span></code>
- is in your path.
- </li>
- <li class="listitem">
- Add <code class="computeroutput"><span class="keyword">using</span> <span class="identifier">boostbook</span>
- <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>
- <span class="identifier">path</span><span class="special">-</span><span class="identifier">to</span><span class="special">-</span><span class="identifier">dtd</span>
- <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>
- 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
- containing the latest XSLT stylesheets. Both paths should use all forward
- slashes even on Windows.
- </li>
- </ul></div>
- <p>
- At this point you should be able to run the tests and generate the HTML summary,
- if GSL, RMath or libstdc++ are present in the compilers path they will be automatically
- 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.
- </p>
- <p>
- If you want to compare multiple compilers, or multiple options for one compiler,
- then you will need to invoke <code class="computeroutput"><span class="identifier">bjam</span></code>
- multiple times, once for each compiler. Note that in order to test multiple
- configurations of the same compiler, each has to be given a unique name in
- the test program, otherwise they all edit the same table cells. Suppose you
- want to test GCC with and without the -ffast-math option, in this case bjam
- would be invoked first as:
- </p>
- <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>
- </pre>
- <p>
- Which would run the tests using default optimization options (-O3), we can
- then run again using -ffast-math:
- </p>
- <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>
- </pre>
- <p>
- In the command line above, the -a flag forces a full rebuild, and the preprocessor
- define COMPILER_NAME needs to be set to a string literal describing the compiler
- configuration, hence the double quotes - one for the command line, one for
- the compiler.
- </p>
- </div>
- <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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- <td align="right"><div class="copyright-footer">Copyright © 2006-2019 Nikhar
- Agrawal, Anton Bikineev, Paul A. Bristow, Marco Guazzone, Christopher Kormanyos,
- Hubert Holin, Bruno Lalande, John Maddock, Jeremy Murphy, Matthew Pulver, Johan
- Råde, Gautam Sewani, Benjamin Sobotta, Nicholas Thompson, Thijs van den Berg,
- Daryle Walker and Xiaogang Zhang<p>
- Distributed under the Boost Software License, Version 1.0. (See accompanying
- 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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