https://olifre.github.io/Recent content on Oliver FreyermuthHugoenSat, 15 Aug 2026 21:30:01 +0200https://olifre.github.io/publications/Sat, 15 Aug 2026 21:30:01 +0200https://olifre.github.io/publications/<p>Most publications are also linked to my ORCID: <div itemscope itemtype="https://schema.org/Person"><a itemprop="sameAs" content="https://orcid.org/0000-0001-8053-6283" href="https://orcid.org/0000-0001-8053-6283" target="orcid.widget" rel="me noopener noreferrer" style="vertical-align:top;"><img src="https://olifre.github.io/svg/icons/ORCID-iD_icon_vector.svg" style="width:1em;margin-right:.5em;display:inline;" alt="ORCID iD icon">https://orcid.org/0000-0001-8053-6283</a></div> </p> <p>You may also want to check my <a href="https://inspirehep.net/authors/1908125" target="_blank" rel="noopener noreferrer">INSPIRE-HEP profile</a> .</p> <h2 id="it">IT</h2> <ul> <li> <p><strong>Energy Efficiency trends in HPC: what high-energy and astrophysicists need to know</strong><br> <em>2025-04</em> &mdash; Estela Suarez, Jorge Amaya, Martin Frank, Oliver Freyermuth, Maria Girone, Bartosz Kostrzewa, Susanne Pfalzner<br> Frontiers in Physics<br> published with OpenAccess: <a href="https://doi.org/10.3389/fphy.2025.1542474" target="_blank" rel="noopener noreferrer">DOI</a> </p> </li> <li> <p><strong>Unleashing JupyterHub: Exploiting resources without inbound network connectivity using HTCondor</strong><br> <em>2021-10</em> &mdash; Oliver Freyermuth, Katrin Kohl, Peter Wienemann<br> Computing and Software for Big Science<br> published with OpenAccess: <a href="https://doi.org/10.1007/s41781-021-00063-1" target="_blank" rel="noopener noreferrer">DOI</a> </p>https://olifre.github.io/creative_projects/Sat, 15 Aug 2026 21:01:31 +0200https://olifre.github.io/creative_projects/<h2 id="lifelines"><a href="https://olifre.github.io/lifelines ">LifeLines</a> </h2> <p>A personal, somewhat poetic blog.</p> <h2 id="my-books"><a href="https://olifre.github.io/mybooks ">My Books</a> </h2> <p>A collection of personal and original other writing projects.</p>https://olifre.github.io/technical_projects/Fri, 14 Aug 2026 20:14:45 +0200https://olifre.github.io/technical_projects/<ul> <li> <p><strong><a href="https://olifre.github.io/archlinux-opinionated ">Installing ArchLinux the opinionated way</a> </strong><br> Similar to official instructions, but with some opinionated decisions, use at your own risk!</p> </li> <li> <p><strong><a href="https://github.com/olifre/conky-themes ">My Conky themes</a> </strong><br> A collection of conky themes I use.</p> </li> <li> <p><strong><a href="https://olifre.github.io/gridka-school-2019-htcondor ">An HTCondor tutorial</a> </strong><br> Made for <a href="https://indico.scc.kit.edu/event/460/overview" target="_blank" rel="noopener noreferrer">GridKa School 2019</a> .</p> </li> <li> <p><strong><a href="https://unibonn.github.io/htcondor-bonn ">An updated HTCondor tutorial with Uni Bonn specifics</a> </strong></p> </li> <li> <p><strong><a href="https://unibonn.github.io/datenauswertung-install ">Instructions on how to install tools for data analysis (German)</a> </strong><br> Built from <a href="https://github.com/unibonn/datenauswertung-install ">this repo</a> .</p> </li> <li> <p><strong><a href="https://github.com/HEP-Puppet/htcondor ">Puppet HTCondor</a> </strong><br> A <a href="https://puppet.com/" target="_blank" rel="noopener noreferrer">Puppet</a> module for the <a href="https://research.cs.wisc.edu/htcondor/" target="_blank" rel="noopener noreferrer">HTCondor</a> workload management system I am co-maintaining.</p>https://olifre.github.io/posts/gentoo_debugging/Sat, 04 Jan 2020 19:21:00 +0100https://olifre.github.io/posts/gentoo_debugging/<p>In <code>/etc/portage/env</code>, create a file <code>debug.conf</code> with the contents:</p> <div class="highlight"><pre tabindex="0" style="color:#e5e5e5;background-color:#000;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span>CFLAGS=<span style="color:#0ff;font-weight:bold">&#34;</span><span style="color:#0ff;font-weight:bold">${</span>CFLAGS<span style="color:#0ff;font-weight:bold">}</span><span style="color:#0ff;font-weight:bold"> -ggdb&#34;</span> </span></span><span style="display:flex;"><span>CXXFLAGS=<span style="color:#0ff;font-weight:bold">&#34;</span><span style="color:#0ff;font-weight:bold">${</span>CXXFLAGS<span style="color:#0ff;font-weight:bold">}</span><span style="color:#0ff;font-weight:bold"> -ggdb&#34;</span> </span></span><span style="display:flex;"><span>FEATURES=<span style="color:#0ff;font-weight:bold">&#34;</span><span style="color:#0ff;font-weight:bold">${</span>FEATURES<span style="color:#0ff;font-weight:bold">}</span><span style="color:#0ff;font-weight:bold"> splitdebug installsources&#34;</span> </span></span></code></pre></div><p>Then, in <code>/etc/portage/package.env</code>, you can add a file containing lines like</p> <pre tabindex="0"><code>sci-physics/root debug.conf </code></pre><p>Furthermore, you have to emerge <code>dev-util/debugedit</code>.</p>