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<a href="https://taskflow.github.io"><img src="taskflow_logo.png" alt="" />Taskflow</a> <span class="m-breadcrumb">|</span> <a href="index.html" class="m-thin">QuickStart</a>
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<h1>
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Building and Installing
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<h3>Contents</h3>
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<ul>
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<li><a href="#BAISupportedCompilers">Supported Compilers</a></li>
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<li><a href="#BAIIntegrateTaskflowToYourProject">Integrate Taskflow to Your Project</a></li>
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<li><a href="#BAIBuildExamplesAndUnitTests">Build Examples and Unit Tests</a></li>
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<li><a href="#BAIBuildCUDACode">Build CUDA Examples and Unit Tests</a></li>
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<li><a href="#BAIBuildSanitizers">Build Sanitizers</a></li>
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<li><a href="#BAIBuildBenchmarks">Build Benchmarks</a></li>
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<li><a href="#BAIBuildDocumentation">Build Documentation</a></li>
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<p>This page describes how to set up Taskflow in your project. We will also go through the building process of unit tests and examples.</p><section id="BAISupportedCompilers"><h2><a href="#BAISupportedCompilers">Supported Compilers</a></h2><p>To use Taskflow, you only need a compiler that supports C++17:</p><ul><li>GNU C++ Compiler at least v8.4 with -std=c++17</li><li>Clang C++ Compiler at least v6.0 with -std=c++17</li><li>Microsoft Visual Studio at least v15.7 (MSVC++ 19.14)</li><li>AppleClang Xcode Version at least v12.0 with -std=c++17</li><li>Nvidia CUDA Toolkit and Compiler (nvcc) at least v11.1 with -std=c++17</li><li>Intel C++ Compiler (nvcc) at least v19.0.1 with -std=c++17</li><li>Intel DPC++ Clang Compiler at least v13.0.0 with -std=c++17 and SYCL20</li></ul><p>Taskflow works on Linux, Windows, and Mac OS X.</p></section><section id="BAIIntegrateTaskflowToYourProject"><h2><a href="#BAIIntegrateTaskflowToYourProject">Integrate Taskflow to Your Project</a></h2><p>Taskflow is <em>header-only</em> and there is no need for installation. Simply download the source and copy the headers under the directory <code>taskflow/</code> to your project.</p><pre class="m-console"><span class="go">~$ git clone https://github.com/taskflow/taskflow.git</span>
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<span class="go">~$ cd taskflow/</span>
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<span class="go">~$ cp -r taskflow myproject/include/</span></pre><p>Taskflow is written in C++17 and is built on top of C++ standardized threading libraries to improve portability. To compile a Taskflow program, say <code>simple.cpp</code>, you need to tell the compiler where to find the Taskflow header files and link it through the system thread library (usually <a href="http://man7.org/linux/man-pages/man7/pthreads.7.html">POSIX threads</a> in Linux-like systems). Take gcc for an example:</p><pre class="m-console"><span class="go">~$ g++ simple.cpp -std=c++17 -I myproject/include/ -O2 -pthread -o simple</span></pre></section><section id="BAIBuildExamplesAndUnitTests"><h2><a href="#BAIBuildExamplesAndUnitTests">Build Examples and Unit Tests</a></h2><p>Taskflow uses CMake to build examples and unit tests. We recommend using out-of-source build.</p><pre class="m-console"><span class="go">~$ cd path/to/taskflow</span>
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<span class="go">~$ mkdir build</span>
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<span class="go">~$ cd build</span>
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<span class="go">~$ cmake ../</span>
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<span class="go">~$ make # compile all examples and unittests</span>
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<span class="go">~$ make test</span>
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<span class="go">Running tests...</span>
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<span class="go">/usr/bin/ctest --force-new-ctest-process</span>
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<span class="go">Test project /home/tsung-wei/Code/taskflow/build</span>
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<span class="go"> Start 1: passive_vector</span>
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<span class="go"> 1/254 Test #1: passive_vector ................... Passed 0.04 sec</span>
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<span class="go"> Start 2: function_traits</span>
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<span class="go"> 2/254 Test #2: function_traits .................. Passed 0.00 sec</span>
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<span class="go"> Start 3: object_pool.sequential</span>
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<span class="go"> 3/254 Test #3: object_pool.sequential ........... Passed 0.10 sec</span>
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<span class="go">...</span>
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<span class="go">100% tests passed, 0 tests failed out of 254</span>
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<span class="go">Total Test time (real) = 29.67 sec</span></pre><p>When the building completes, you can find the executables for examples and tests under the two folders, <code>examples/</code> and <code>unittests/</code>. You can list a set of available options in the cmake.</p><pre class="m-console"><span class="go">~$ cmake -LA</span>
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<span class="go">...</span>
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<span class="gp">TF_BUILD_EXAMPLES:BOOL=ON # </span>by default, we compile examples
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<span class="gp">TF_BUILD_TESTS:BOOL=ON # </span>by default, we compile tests
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<span class="gp">TF_BUILD_BENCHMARKS:BOOL=OFF # </span>by default, we don<span class="s1">'t compile benchmarks </span>
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<span class="gp">TF_BUILD_CUDA:BOOL=OFF # </span><span class="s1">by default, we don'</span>t compile CUDA code
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<span class="go">...</span>
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<span class="go">... more options</span></pre><p>Currently, our CMake script supports the following options:</p><table class="m-table"><thead><tr><th>CMake Option</th><th>Default</th><th>Usage</th></tr></thead><tbody><tr><td>TF_BUILD_EXAMPLES</td><td>ON</td><td>enable/disable building examples</td></tr><tr><td>TF_BUILD_TESTS</td><td>ON</td><td>enable/disable building unit tests</td></tr><tr><td>TF_BUILD_BENCHMARKS</td><td>OFF</td><td>enable/disable building benchmarks</td></tr><tr><td>TF_BUILD_CUDA</td><td>OFF</td><td>enable/disable building CUDA code</td></tr></tbody></table><p>To enable or disable a specific option, use <code>-D</code> in the CMake build. For example:</p><pre class="m-console"><span class="go">~$ cmake ../ -DTF_BUILD_EXAMPLES=OFF</span></pre><p>The above command turns off building Taskflow examples.</p></section><section id="BAIBuildCUDACode"><h2><a href="#BAIBuildCUDACode">Build CUDA Examples and Unit Tests</a></h2><p>To build CUDA code, including unit tests and examples, enable the CMake option <code>TF_BUILD_CUDA</code> to <code>ON</code>. Cmake will automatically detect the existence of <code>nvcc</code> and use it to compile and link .cu code.</p><pre class="m-console"><span class="go">~$ cmake ../ -DTF_BUILD_CUDA=ON</span>
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<span class="go">~$ make</span></pre><p>Please visit the page <a href="CompileTaskflowWithCUDA.html" class="m-doc">Compile Taskflow with CUDA</a> for details.</p></section><section id="BAIBuildSanitizers"><h2><a href="#BAIBuildSanitizers">Build Sanitizers</a></h2><p>You can build Taskflow with <em>sanitizers</em> to detect a variety of errors, such as data race, memory leak, undefined behavior, and others. To enable a sanitizer, add the sanitizer flag to the CMake variable <code>CMAKE_CXX_FLAGS</code>. The following example enables thread sanitizer in building Taskflow code to detect data race:</p><pre class="m-console"><span class="gp"># </span>build Taskflow code with thread sanitizer to detect data race
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<span class="go">~$ cmake ../ -DCMAKE_CXX_FLAGS="-fsanitize=thread -g"</span>
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<span class="gp"># </span>build Taskflow code with address sanitizer to detect illegal memory access
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<span class="go">~$ cmake ../ -DCMAKE_CXX_FLAGS="-fsanitize=address -g"</span>
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<span class="gp"># </span>build Taskflow code with ub sanitizer to detect undefined behavior
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<span class="go">~$ cmake ../ -DCMAKE_CXX_FLAGS="-fsanitize=undefined -g"</span></pre><p>Our <a href="https://github.com/taskflow/taskflow/actions">continuous integration workflows</a> incorporates thread sanitizer (<a href="https://clang.llvm.org/docs/ThreadSanitizer.html">-fsanitize=thread</a>), address sanitizer (<a href="https://clang.llvm.org/docs/AddressSanitizer.html">-fsanitize=address</a>), and leak sanitizer (<a href="https://clang.llvm.org/docs/LeakSanitizer.html">-fsanitize=leak</a>) to detect data race, illegal memory address, and memory leak. To our best knowledge, Taskflow is one of the very few parallel programming libraries that are free from data race.</p><aside class="m-note m-info"><h4>Note</h4><p>Some sanitizers are supported by certain computing architectures. You can find the information about architecture support of each sanitizer at <a href="https://clang.llvm.org/docs/index.html">Clang Documentation</a> and <a href="https://gcc.gnu.org/onlinedocs/gcc/Instrumentation-Options.html">GCC Instrumentation Options</a>.</p></aside></section><section id="BAIBuildBenchmarks"><h2><a href="#BAIBuildBenchmarks">Build Benchmarks</a></h2><p>The Taskflow project contains a set of benchmarks to evaluate and compare the performance of <a href="classtf_1_1Taskflow.html" class="m-doc">Taskflow</a> with existing parallel programming libraries. To build the benchmark code, enable the CMake option <code>TF_BUILD_BENCHMARKS</code> to <code>ON</code> as follows:</p><pre class="m-console"><span class="go">~$ cmake ../ -DTF_BUILD_BENCHMARKS=ON</span>
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<span class="go">~$ make</span></pre><p>Please visit the page <a href="BenchmarkTaskflow.html" class="m-doc">Benchmark Taskflow</a> for details.</p></section><section id="BAIBuildDocumentation"><h2><a href="#BAIBuildDocumentation">Build Documentation</a></h2><p>Taskflow uses <a href="https://www.doxygen.nl/index.html">Doxygen</a> and <a href="https://mcss.mosra.cz/documentation/doxygen/">m.css</a> to generate this documentation. The source of documentation is located in the folder <code>taskflow/doxygen</code> and the generated html is output to the folder <code>taskflow/docs</code>. To generate the documentation, you need to first install doxygen:</p><pre class="m-console"><span class="gp"># </span>ubuntu as an example
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<span class="go">~$ sudo apt-get install doxygen graphviz</span></pre><p>Once you have doxygen and dot graph generator installed, clone the m.css project and enter the <code>m.css/documentation</code> directory:</p><pre class="m-console"><span class="go">~$ git clone https://github.com/mosra/m.css.git</span>
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<span class="go">~$ cd m.css/documentation</span></pre><p>The script <code>doxygen.py</code> requires Python 3.6, depends on <a href="http://jinja.pocoo.org/">Jinja2</a> for templating and <a href="http://pygments.org/">Pygments</a> for code block highlighting. You can install the dependencies via <code>pip</code> or your distribution package manager:</p><pre class="m-console"><span class="gp"># </span>You may need sudo here
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<span class="gp"># </span>More details are available at https://mcss.mosra.cz/documentation/doxygen/
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<span class="go">~$ pip3 install jinja2 Pygments</span></pre><p>Next, invoke <code>doxygen.py</code> and point it to the <code>taskflow/doxygen/conf.py</code>:</p><pre class="m-console"><span class="go">~$ ./doxygen.py path/to/taskflow/doxygen/conf.py</span></pre><p>You can find the documentation output in <code>taskflow/docs</code>.</p></section>
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<p>Taskflow handbook is part of the <a href="https://taskflow.github.io">Taskflow project</a>, copyright © <a href="https://tsung-wei-huang.github.io/">Dr. Tsung-Wei Huang</a>, 2018–2024.<br />Generated by <a href="https://doxygen.org/">Doxygen</a> 1.9.1 and <a href="https://mcss.mosra.cz/">m.css</a>.</p>
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