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  <section id="cmake-cuda-architectures">
<span id="variable:CMAKE_CUDA_ARCHITECTURES"></span><h1>CMAKE_CUDA_ARCHITECTURES<a class="headerlink" href="#cmake-cuda-architectures" title="Permalink to this heading">¶</a></h1>
<div class="versionadded">
<p><span class="versionmodified added">New in version 3.18.</span></p>
</div>
<p>Default value for <span class="target" id="index-0-prop_tgt:CUDA_ARCHITECTURES"></span><a class="reference internal" href="../prop_tgt/CUDA_ARCHITECTURES.html#prop_tgt:CUDA_ARCHITECTURES" title="CUDA_ARCHITECTURES"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">CUDA_ARCHITECTURES</span></code></a> property of targets.</p>
<p>Initialized by the <span class="target" id="index-0-envvar:CUDAARCHS"></span><a class="reference internal" href="../envvar/CUDAARCHS.html#envvar:CUDAARCHS" title="CUDAARCHS"><code class="xref cmake cmake-envvar docutils literal notranslate"><span class="pre">CUDAARCHS</span></code></a> environment variable if set.
Otherwise as follows depending on <span class="target" id="index-0-variable:CMAKE_&lt;LANG&gt;_COMPILER_ID"></span><a class="reference internal" href="CMAKE_LANG_COMPILER_ID.html#variable:CMAKE_&lt;LANG&gt;_COMPILER_ID" title="CMAKE_&lt;LANG&gt;_COMPILER_ID"><code class="xref cmake cmake-variable docutils literal notranslate"><span class="pre">CMAKE_CUDA_COMPILER_ID</span></code></a>:</p>
<ul class="simple">
<li><p>For <code class="docutils literal notranslate"><span class="pre">Clang</span></code>: the oldest architecture that works.</p></li>
<li><p>For <code class="docutils literal notranslate"><span class="pre">NVIDIA</span></code>: the default architecture chosen by the compiler.
See policy <span class="target" id="index-0-policy:CMP0104"></span><a class="reference internal" href="../policy/CMP0104.html#policy:CMP0104" title="CMP0104"><code class="xref cmake cmake-policy docutils literal notranslate"><span class="pre">CMP0104</span></code></a>.</p></li>
</ul>
<p>Users are encouraged to override this, as the default varies across compilers
and compiler versions.</p>
<p>This variable is used to initialize the <span class="target" id="index-1-prop_tgt:CUDA_ARCHITECTURES"></span><a class="reference internal" href="../prop_tgt/CUDA_ARCHITECTURES.html#prop_tgt:CUDA_ARCHITECTURES" title="CUDA_ARCHITECTURES"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">CUDA_ARCHITECTURES</span></code></a> property
on all targets. See the target property for additional information.</p>
<section id="examples">
<h2>Examples<a class="headerlink" href="#examples" title="Permalink to this heading">¶</a></h2>
<div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nf">cmake_minimum_required(</span><span class="no">VERSION</span><span class="nf">)</span><span class="w"></span>

<span class="nf">if(</span><span class="no">NOT</span><span class="w"> </span><span class="no">DEFINED</span><span class="w"> </span><span class="no">CMAKE_CUDA_ARCHITECTURES</span><span class="nf">)</span><span class="w"></span>
<span class="w">  </span><span class="nf">set(</span><span class="no">CMAKE_CUDA_ARCHITECTURES</span><span class="w"> </span><span class="m">75</span><span class="nf">)</span><span class="w"></span>
<span class="nf">endif()</span><span class="w"></span>

<span class="nf">project(</span><span class="nb">example</span><span class="w"> </span><span class="no">LANGUAGES</span><span class="w"> </span><span class="no">CUDA</span><span class="nf">)</span><span class="w"></span>
</pre></div>
</div>
<p><code class="docutils literal notranslate"><span class="pre">CMAKE_CUDA_ARCHITECTURES</span></code> will default to <code class="docutils literal notranslate"><span class="pre">75</span></code> unless overridden by the user.</p>
</section>
</section>


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