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<title>OpenBLAS : An optimized BLAS library</title>
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<h1 id="project_title">OpenBLAS</h1>
<h2 id="project_tagline">An optimized BLAS library</h2>
<section id="downloads">
<a class="zip_download_link" href="https://github.com/OpenMathLib/OpenBLAS/releases/download/v0.3.33/OpenBLAS-0.3.33.zip">Download this project as a .zip file</a>
<a class="tar_download_link" href="https://github.com/OpenMathLib/OpenBLAS/releases/download/v0.3.33/OpenBLAS-0.3.33.tar.gz">Download this project as a tar.gz file</a>
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<p>OpenBLAS is an optimized BLAS library based on <a href="https://www.tacc.utexas.edu/research-development/tacc-software/gotoblas2">GotoBLAS2</a> 1.13 BSD version. Please read the documents on the <a href="https://www.openmathlib.org/OpenBLAS/docs/">OpenBLAS documentation site</a>.</p>
<h3>Binary Packages</h3>
<p>We strive to provide <a href="https://sourceforge.net/projects/openblas/files">binary packages</a> for the following platform.</p>
<ul>
<li>Windows x86/x86_64/arm64</li>
</ul>
(hosted on sourceforge.net; if required the mingw runtime dependencies can be found in the 0.2.12 folder there)<br>
Note that while the binaries may be slow to arrive on sourceforge.net at the moment, they can also be found in the Releases section of the github site,
<a href="https://github.com/OpenMathLib/OpenBLAS/releases">https://github.com/OpenMathLib/OpenBLAS/releases</a>.
Binaries for other platforms are usually available on the sites listed in the initial section of the <a href="https://www.openmathlib.org/OpenBLAS/docs/install/">Installation Guide</a>
<h3>Install from Source</h3>
<p>Please read <a href="https://www.openmathlib.org/OpenBLAS/docs/user_manual/">User Manual</a> and the second part of the <a href="https://www.openmathlib.org/OpenBLAS/docs/install/#building-from-source">Installation Guide</a></p>
<p>The full project documentation is also available as part of the sources <a href="docs/"> here</a> - this replaces the former wiki on the github page</p>
<h3>Changelog</h3>
<p>The current release is 0.3.33 version created Apr 23, 2026. Please refer to the <a href="https://github.com/OpenMathLib/OpenBLAS/blob/develop/Changelog.txt">changelog file</a> for notable changes.
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<h3>License</h3>
<p>BSD</p>
<h3>Developers</h3>
<p>Current Developers: <a href="http://xianyi.github.io">Zhang Xianyi</a>, Martin Kroeker<p>
<p>Previous Developers:</p>
<ul>
<li>Werner Saar</li>
<li>Wang Qian</li>
<li>Zaheer Chothia</li>
<li>Chen Shaohu (Optimized GEMV on the Loongson-3A processor)</li>
<li>Luo Wen (Intern, Testing Level 2 BLAS)</li>
</ul>
<h3>Contributors</h3>
<p>Please check <a href="https://github.com/OpenMathLib/OpenBLAS/blob/develop/CONTRIBUTORS.md">CONTRIBUTORS.md</a>.</p>
<h3>Issues</h3>
<p>Please use the issue tracker at <a href="https://github.com/OpenMathLib/OpenBLAS/issues">github.com/OpenMathLib/OpenBLAS/issues</a> for bug
reports and suggestions.</p>
<h3>FAQ</h3>
<p>Please read our <a href="https://www.openmathlib.org/OpenBLAS/docs/faq/">FAQ and other documentation pages (also included in the project sources)</a>.</p>
<!---<h3>Donation</h3>
<p>Please read <a href="https://github.com/OpenMathLib/OpenBLAS/wiki/Donation">this wiki page</a>. </p>
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<h3>Contact</h3>
<p><a href="https://groups.google.com/forum/#!forum/openblas-users">Users mailing list</a> </p>
<h3>Download</h3>
<p>You can download this project in either
<a href="https://github.com/OpenMathLib/OpenBLAS/releases/download/v0.3.33/OpenBLAS-0.3.33.zip">zip</a> or
<a href="https://github.com/OpenMathLib/OpenBLAS/releases/download/v0.3.33/OpenBLAS-0.3.33.tar.gz">tar</a> formats.<br>
(md5 checksums are 81637d0ac00b6dab6f88988cc35645af for the zip and 96c5cd9013013faefc294bc57830c77d for the tar.gz package)
</p>
<p>You can also clone the project with <a href="https://git-scm.com">Git</a>
by running:
<pre>$ git clone https://github.com/OpenMathLib/OpenBLAS.git</pre>
</p>
<p>(Note that the project was moved out from under Xianyi's personal repository into the OpenMathLib organization
in the summer of 2023 purely for practical reasons. Any old links referring to github.com/xianyi/OpenBLAS
are automatically forwarded by github to the new location.)</p>
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<p class="copyright">OpenBLAS maintained by <a href="http://xianyi.github.io">Zhang Xianyi</a></p>
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