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2025-01-04 01:25:05 +01:00
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<title>Release Notes &raquo; Release 3.7.0 (2024/05/07) | Taskflow QuickStart</title>
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<h1>
<span class="m-breadcrumb"><a href="Releases.html">Release Notes</a> &raquo;</span>
Release 3.7.0 (2024/05/07)
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<h3>Contents</h3>
<ul>
<li><a href="#release-3-7-0_download">Download</a></li>
<li><a href="#release-3-7-0_system_requirements">System Requirements</a></li>
<li><a href="#release-3-7-0_summary">Release Summary</a></li>
<li>
<a href="#release-3-7-0_new_features">New Features</a>
<ul>
<li><a href="#release-3-7-0_taskflow_core">Taskflow Core</a></li>
<li><a href="#release-3-7-0_utilities">Utilities</a></li>
</ul>
</li>
<li><a href="#release-3-7-0_bug_fixes">Bug Fixes</a></li>
<li><a href="#release-3-7-0_breaking_changes">Breaking Changes</a></li>
<li><a href="#release-3-7-0_documentation">Documentation</a></li>
<li><a href="#release-3-7-0_miscellaneous_items">Miscellaneous Items</a></li>
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<p>Taskflow 3.7.0 is the 8th release in the 3.x line! This release includes several new changes, such as exception support, improved scheduling algorithms, documentation, examples, and unit tests.</p><section id="release-3-7-0_download"><h2><a href="#release-3-7-0_download">Download</a></h2><p>Taskflow 3.7.0 can be downloaded from <a href="https://github.com/taskflow/taskflow/releases/tag/v3.7.0">here</a>.</p></section><section id="release-3-7-0_system_requirements"><h2><a href="#release-3-7-0_system_requirements">System Requirements</a></h2><p>To use Taskflow v3.7.0, you 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 v19.27 with /std:c++17</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 at least v19.0.1 with -std=c++17</li><li>Intel DPC++ Clang Compiler at least v13.0.0 with -std=c++17</li></ul><p>Taskflow works on Linux, Windows, and Mac OS X.</p></section><section id="release-3-7-0_summary"><h2><a href="#release-3-7-0_summary">Release Summary</a></h2><p>This release introduces a new exception interface to help identify C++ errors in taskflow programs.</p></section><section id="release-3-7-0_new_features"><h2><a href="#release-3-7-0_new_features">New Features</a></h2><section id="release-3-7-0_taskflow_core"><h3><a href="#release-3-7-0_taskflow_core">Taskflow Core</a></h3><ul><li>Improved scheduling performance of dependent asynchronous tasks</li><li>Improved scheduling performance of module task by removing busy looping</li><li>Improved <a href="classtf_1_1Executor.html#ab9aa252f70e9a40020a1e5a89d485b85" class="m-doc">tf::<wbr />Executor::<wbr />wait_for_all</a> using C++20 atomic wait</li><li>Improved tf::Notifier using C++20 atomic wait</li><li>Improved worker-thread ID mapping performance using C++20 atomic wait</li><li>Added <code>-Wshadow</code> to the compilation check</li><li>Added <a href="classtf_1_1AsyncTask.html#aefeefa30d7cafdfbb7dc8def542e8e51" class="m-doc">tf::<wbr />AsyncTask::<wbr />is_done</a> to query the completion status of an async task</li><li>Added <a href="classtf_1_1Taskflow.html#a354a7673fabeaf3be66928ad6b573900" class="m-doc">tf::<wbr />Taskflow::<wbr />remove_dependency</a> to remove dependencies from the graph</li><li>Added support for exception in <a href="classtf_1_1Taskflow.html" class="m-doc">tf::<wbr />Taskflow</a> and <a href="classtf_1_1Executor.html" class="m-doc">tf::<wbr />Executor</a></li></ul><pre class="m-code"><span class="n">tf</span><span class="o">::</span><span class="n">Executor</span><span class="w"> </span><span class="n">executor</span><span class="p">;</span>
<span class="n">tf</span><span class="o">::</span><span class="n">Taskflow</span><span class="w"> </span><span class="n">taskflow</span><span class="p">;</span>
<span class="n">taskflow</span><span class="p">.</span><span class="n">emplace</span><span class="p">([](){</span><span class="w"> </span><span class="k">throw</span><span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">runtime_error</span><span class="p">(</span><span class="s">&quot;exception&quot;</span><span class="p">);</span><span class="w"> </span><span class="p">});</span>
<span class="k">try</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="n">executor</span><span class="p">.</span><span class="n">run</span><span class="p">(</span><span class="n">taskflow</span><span class="p">).</span><span class="n">get</span><span class="p">();</span>
<span class="p">}</span>
<span class="k">catch</span><span class="p">(</span><span class="k">const</span><span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">runtime_error</span><span class="o">&amp;</span><span class="w"> </span><span class="n">e</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">cerr</span><span class="w"> </span><span class="o">&lt;&lt;</span><span class="w"> </span><span class="n">e</span><span class="p">.</span><span class="n">what</span><span class="p">()</span><span class="w"> </span><span class="o">&lt;&lt;</span><span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span>
<span class="p">}</span></pre><ul><li>Modified the CI to exclude exception test under sanitizers</li><li>Modified the <a href="classtf_1_1PartitionerBase.html" class="m-doc">tf::<wbr />PartitionerBase</a> to allow defining custom closure wrappers</li></ul><pre class="m-code"><span class="n">std</span><span class="o">::</span><span class="n">atomic</span><span class="o">&lt;</span><span class="kt">int</span><span class="o">&gt;</span><span class="w"> </span><span class="n">count</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
<span class="n">tf</span><span class="o">::</span><span class="n">Taskflow</span><span class="w"> </span><span class="n">taskflow</span><span class="p">;</span>
<span class="n">taskflow</span><span class="p">.</span><span class="n">for_each_index</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="mi">100</span><span class="p">,</span><span class="w"> </span><span class="mi">1</span><span class="p">,</span><span class="w"> </span>
<span class="w"> </span><span class="p">[](){</span><span class="w"> </span>
<span class="w"> </span><span class="n">printf</span><span class="p">(</span><span class="s">&quot;%d</span><span class="se">\n</span><span class="s">&quot;</span><span class="p">,</span><span class="w"> </span><span class="n">i</span><span class="p">);</span><span class="w"> </span>
<span class="w"> </span><span class="p">},</span>
<span class="w"> </span><span class="n">tf</span><span class="o">::</span><span class="n">StaticPartitioner</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="p">[](</span><span class="k">auto</span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="n">closure</span><span class="p">){</span>
<span class="w"> </span><span class="c1">// do something before invoking the partitioned task</span>
<span class="w"> </span><span class="c1">// ...</span>
<span class="w"> </span>
<span class="w"> </span><span class="c1">// invoke the partitioned task</span>
<span class="w"> </span><span class="n">closure</span><span class="p">();</span>
<span class="w"> </span><span class="c1">// do something else after invoking the partitioned task</span>
<span class="w"> </span><span class="c1">// ...</span>
<span class="w"> </span><span class="p">}</span>
<span class="p">);</span>
<span class="n">executor</span><span class="p">.</span><span class="n">run</span><span class="p">(</span><span class="n">taskflow</span><span class="p">).</span><span class="n">wait</span><span class="p">();</span></pre></section><section id="release-3-7-0_utilities"><h3><a href="#release-3-7-0_utilities">Utilities</a></h3></section></section><section id="release-3-7-0_bug_fixes"><h2><a href="#release-3-7-0_bug_fixes">Bug Fixes</a></h2><ul><li>Fixed compilation error of CUDA examples caused by not including <code><a href="for__each_8hpp.html" class="m-doc">for_<wbr />each.hpp</a></code></li><li>Fixed the runtime error of <a href="classtf_1_1FlowBuilder.html#a3b132bd902331a11b04b4ad66cf8bf77" class="m-doc">tf::<wbr />Taskflow::<wbr />for_each_index</a> when the range invalid</li></ul></section><section id="release-3-7-0_breaking_changes"><h2><a href="#release-3-7-0_breaking_changes">Breaking Changes</a></h2><ul><li>Renamed tf::Runtime::join to <a href="classtf_1_1Runtime.html#afcc18484a95fd2a834940d878eaf4dfc" class="m-doc">tf::<wbr />Runtime::<wbr />corun_all</a></li><li>Removed tf::WorkerInterface due to the support of exception</li></ul></section><section id="release-3-7-0_documentation"><h2><a href="#release-3-7-0_documentation">Documentation</a></h2><ul><li>Revised <a href="DependentAsyncTasking.html" class="m-doc">Asynchronous Tasking with Dependencies</a><ul><li>Added <a href="DependentAsyncTasking.html#QueryTheComppletionStatusOfDependentAsyncTasks" class="m-doc">Query the Completion Status of Dependent Async Tasks</a></li></ul></li><li>Revised <a href="ExceptionHandling.html" class="m-doc">Exception Handling</a></li><li>Revised <a href="ExecuteTaskflow.html" class="m-doc">Executor</a><ul><li>Removed the section of tf::WorkerInterface</li></ul></li><li>Revised <a href="PartitioningAlgorithm.html" class="m-doc">Partitioning Algorithm</a></li></ul></section><section id="release-3-7-0_miscellaneous_items"><h2><a href="#release-3-7-0_miscellaneous_items">Miscellaneous Items</a></h2><p>We have published Taskflow in the following venues:</p><ul><li>Cheng-Hsiang Chiu, Zhicheng Xiong, Zizheng Guo, Tsung-Wei Huang, and Yibo Lin, &quot;<a href="https://tsung-wei-huang.github.io/papers/hpcasia-24.pdf">An Efficient Task-parallel Pipeline Programming Framework</a>,&quot; <em>ACM International Conference on High-performance Computing in Asia-Pacific Region (HPC Asia)</em>, Nagoya, Japan, 2024</li><li>Cheng-Hsiang Chiu, Dian-Lun Lin, and Tsung-Wei Huang,, &quot;<a href="https://tsung-wei-huang.github.io/papers/iccad23-asynctask.pdf">Programming Dynamic Task Parallelism for Heterogeneous EDA Algorithms</a>,&quot; <em>IEEE/ACM International Conference on Computer-aided Design (ICCAD)</em>, San Francisco, CA, 2023</li></ul><p>Please do not hesitate to contact <a href="https://tsung-wei-huang.github.io/">Dr. Tsung-Wei Huang</a> if you intend to collaborate with us on using Taskflow in your scientific computing projects.</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&ndash;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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