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<h1 id="psi-hpccscs">PSI HPC@CSCS<a class="headerlink" href="#psi-hpccscs" title="Permanent link"></a></h1>
<p>PSI has a long standing collaboration with CSCS for offering high end
HPC resources to PSI projects. PSI had co-invested in CSCS' initial
Cray XT3 supercomputer <em>Horizon</em> in 2005 and we continue to procure a share on the
CSCS flagship systems.</p>
<p>The share is intended for projects that by their nature cannot profit
from applying for regular <a href="https://www.cscs.ch/user-lab/allocation-schemes">CSCS user lab allocation
schemes.</a>.</p>
<p>We can also help PSI groups to procure additional resources based on
the PSI conditions - please contact us in such a case.</p>
<h2 id="yearly-survey-for-requesting-a-project-on-the-psi-share">Yearly survey for requesting a project on the PSI share<a class="headerlink" href="#yearly-survey-for-requesting-a-project-on-the-psi-share" title="Permanent link"></a></h2>
<p>At the end of each year we prepare a survey process and notify all subscribed
users of the specialized <strong>PSI HPC@CSCS mailing list</strong> (see below) and the
merlin cluster lists, to enter their next year resource requests. Projects
receive resources in the form of allocations over the four quarters of the
following year.</p>
<p>The projects requests get reviewed and requests may get adapted to fit into the
available capacity.</p>
<p>The survey is done through ServiceNow, please navigate to
<a href="https://psi.service-now.com/psisp?id=psi_new_sc_cat_item&amp;sys_id=8d14bd1e4f9c7b407f7660fe0310c7e9">Home &gt; Service Catalog &gt; Research Computing &gt; Apply for computing resources at CSCS</a>
and submit the form.</p>
<p>Applications will be reviewed and the final resource allocations, in case of
oversubscription, will be arbitrated by a panel within CSD.</p>
<h3 id="instructions-for-filling-out-the-2026-survey">Instructions for filling out the 2026 survey<a class="headerlink" href="#instructions-for-filling-out-the-2026-survey" title="Permanent link"></a></h3>
<ul>
<li>We have a budget of 100 kCHF for 2026, which translates to 435'000 multicore node hours or 35'600 node hours on the GPU Grace Hopper nodes.</li>
<li>multicore projects: The minimum allocation is 10'000 node hours, an average project allocation amounts to 30'000 node hours</li>
<li>GPU projects: The minimum allocation is 800 node hours, an average project allocation is 2000 node hours.</li>
<li>You need to specify the total resource request for your project in node hours, and how you would like to split the resources over the 4 quarters. For the allocations per quarter year, please enter the number in percent (e.g. 25%, 25%, 25%, 25%). If you indicate nothing, a 25% per quarter will be assumed.</li>
<li>We currently have a total of 65 TB of storage for all projects. Additional storage
can be obtained, but large storage assignments are not in scope for these projects.</li>
</ul>
<h2 id="cscs-systems-reference-information">CSCS Systems reference information<a class="headerlink" href="#cscs-systems-reference-information" title="Permanent link"></a></h2>
<p>For 2025 we can offer access to <a href="https://www.cscs.ch/computers/alps">CSCS Alps</a> Eiger (CPU multicore) and Daint (GPU) systems.</p>
<ul>
<li><a href="https://user.cscs.ch/">CSCS User Portal</a></li>
<li>Documentation<ul>
<li><a href="https://docs.cscs.ch/clusters/eiger/">CSCS Eiger CPU multicore cluster</a></li>
<li><a href="https://docs.cscs.ch/clusters/daint/">CSCS Daint GPU cluster</a></li>
</ul>
</li>
</ul>
<h2 id="contact-information">Contact information<a class="headerlink" href="#contact-information" title="Permanent link"></a></h2>
<ul>
<li>PSI Contacts:<ul>
<li>Mailing list contact: <a href="mailto:psi-hpc-at-cscs-admin@lists.psi.ch">psi-hpc-at-cscs-admin@lists.psi.ch</a><ul>
<li>Marc Caubet Serrabou <a href="mailto:marc.caubet@psi.ch">marc.caubet@psi.ch</a></li>
<li>Derek Feichtinger <a href="mailto:derek.feichtinger@psi.ch">derek.feichtinger@psi.ch</a></li>
</ul>
</li>
<li>Mailing list for receiving user notifications and survey information: <a href="mailto:psi-hpc-at-cscs@lists.psi.ch">psi-hpc-at-cscs@lists.psi.ch</a> <a href="https://psilists.ethz.ch/sympa/subscribe/psi-hpc-at-cscs">(subscribe)</a></li>
</ul>
</li>
</ul>
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