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resource-limits.html
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<div class="section" id="cluster-resource-limits">
<h1>Cluster Resource Limits<a class="headerlink" href="#cluster-resource-limits" title="Permalink to this headline">¶</a></h1>
<p>By default users can create clusters with as many workers and resources as they
want. In shared environments this may not always be desirable. To remedy this
administrators can set per-cluster resource limits.</p>
<p>A few limits are available:</p>
<ul class="simple">
<li><p><a class="reference internal" href="api-server.html#c.ClusterConfig.cluster_max_cores" title="c.ClusterConfig.cluster_max_cores"><code class="xref py py-data docutils literal notranslate"><span class="pre">c.ClusterConfig.cluster_max_cores</span></code></a>: Maximum number of cores per cluster</p></li>
<li><p><a class="reference internal" href="api-server.html#c.ClusterConfig.cluster_max_memory" title="c.ClusterConfig.cluster_max_memory"><code class="xref py py-data docutils literal notranslate"><span class="pre">c.ClusterConfig.cluster_max_memory</span></code></a>: Maximum amount of memory per cluster</p></li>
<li><p><a class="reference internal" href="api-server.html#c.ClusterConfig.cluster_max_workers" title="c.ClusterConfig.cluster_max_workers"><code class="xref py py-data docutils literal notranslate"><span class="pre">c.ClusterConfig.cluster_max_workers</span></code></a>: Maximum number of workers per cluster</p></li>
</ul>
<p>If a cluster is at capacity for any of these limits, requests for new workers
or workers will warn with an informative message saying they’re at capacity.</p>
<div class="section" id="example">
<h2>Example<a class="headerlink" href="#example" title="Permalink to this headline">¶</a></h2>
<p>Here we limit each cluster to:</p>
<ul class="simple">
<li><p>A max of 80 active cores</p></li>
<li><p>A max of 1 TiB of RAM</p></li>
</ul>
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">c</span><span class="o">.</span><span class="n">ClusterConfig</span><span class="o">.</span><span class="n">cluster_max_cores</span> <span class="o">=</span> <span class="mi">80</span>
<span class="n">c</span><span class="o">.</span><span class="n">ClusterConfig</span><span class="o">.</span><span class="n">cluster_max_memory</span> <span class="o">=</span> <span class="s2">"1 T"</span>
</pre></div>
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