<div dir="ltr"><div class="gmail_default" style="font-size:small"><br></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">---------- Forwarded message ---------<br>From: <strong class="gmail_sendername" dir="auto">HPCC_noreply</strong> <span dir="auto"><<a href="mailto:no-reply@hpcc.ucr.edu">no-reply@hpcc.ucr.edu</a>></span><br>Date: Mon, Aug 4, 2025 at 1:39 PM<br>Subject: [UCR HPCC] Summer Maintenance Shutdown UPDATE 2
<br>To: HPCC User <<a href="mailto:weil@ucr.edu">weil@ucr.edu</a>><br></div><br><br><u></u>
<div style="display:none;overflow:hidden;line-height:1px;opacity:0;max-height:0;max-width:0">[UCR HPCC] Summer Maintenance Shutdown UPDATE 2
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<p style="font-size:14px;line-height:26px;margin:16px 0;font-weight:700;color:#0b4c91">HPCC Summer Maintenance Shutdown UPDATE 2</p>
<p style="font-size:14px;line-height:26px;margin:16px 0;font-weight:700;color:#0b4c91">When</p>
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<li style="font-size:14px;line-height:22px;margin:16px 0;color:#3c4043">Begins: Sunday, August 10, 9pm</li>
<li style="font-size:14px;line-height:22px;margin:16px 0;color:#3c4043">Ends: Tuesday, August 12, evening</li>
<li style="font-size:14px;line-height:22px;margin:16px 0;color:#3c4043">Follow-up outage: Early September (tentative)</li>
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<p style="font-size:14px;line-height:26px;margin:16px 0;font-weight:700;color:#0b4c91">Description</p>
<p style="font-size:14px;line-height:22px;margin:16px 0;color:#3c4043">(Note: a few users received an email with "TEST1" in the subject. This email is being resent with the correct subject line to all users.)</p>
<p style="font-size:14px;line-height:22px;margin:16px 0;color:#3c4043">Dear HPCC Users,</p>
<p style="font-size:14px;line-height:22px;margin:16px 0;color:#3c4043">We've just been informed that there was a miscommunication between UCR and the electrical contractors regarding the exact date of the SOMED-1 power shutdown. Instead of early Friday (8/8), power is scheduled to go down early Monday (8/11).</p>
<p style="font-size:14px;line-height:22px;margin:16px 0;color:#3c4043">In the interest of minimizing downtime for our users, we've decided once again to shift our maintenance window. We will now plan to shutdown the cluster on <b>Sunday, August 10, at 9pm</b>, and bring everything back up by Tuesday evening.</p>
<p style="font-size:14px;line-height:22px;margin:16px 0;color:#3c4043">HPCC apologizes for the uncertainty and disruptions caused by these sudden developments. These maintenance events are necessary for the long-term health of the cluster and related systems. Thanks for your continued support and understanding.</p>
<p style="font-size:14px;line-height:26px;margin:16px 0;font-weight:700;color:#0b4c91">Impact on Slurm Jobs, "ReqNodeNotAvail"</p>
<p style="font-size:14px;line-height:22px;margin:16px 0;color:#3c4043">A Slurm reservation block has been set to prevent jobs from running during the maintenance window. A previous email advised that some users may have their jobs cancelled for the shutdown; this is no longer true based on the new date and time.</p>
<p style="font-size:14px;line-height:22px;margin:16px 0;color:#3c4043">If you have a job that extends into the maintenance window, it will stay in the queue with the reason <b>"ReqNodeNotAvail, Reserved for maintenance"</b>. If you want your job to start sooner, you will need to shorten the requested time for your job such that it completes before maintenance begins (approximately 6-7:30:00 as of this email). Otherwise, you may leave the job as is, and it will start automatically once maintenance is done.</p>
<p style="font-size:14px;line-height:26px;margin:16px 0;font-weight:700;color:#0b4c91">Other Services Impacted</p>
<p style="font-size:14px;line-height:22px;margin:16px 0;color:#3c4043">Most services hosted by HPCC will be down during this period. This includes, but is not limited to:</p>
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<li style="font-size:14px;line-height:22px;margin:16px 0;color:#3c4043">Cluster access (SSH, Slurm, data access), including web browser (HTTP) access to user data.</li>
<li style="font-size:14px;line-height:22px;margin:16px 0;color:#3c4043">All services provided by OnDemand: RStudio/Posit, MATLAB, Jupyter, etc.</li>
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<p style="font-size:14px;line-height:22px;margin:16px 0;color:#3c4043"><b>Normal email support (<a href="mailto:support@hpcc.ucr.edu" target="_blank">support@hpcc.ucr.edu</a>) will be down late Sunday to early Monday.</b> Our email support systems should come back online around Monday noon. HPCC's Slack workspace (<a href="https://ucr-hpcc.slack.com" target="_blank">https://ucr-hpcc.slack.com</a>) will be the main means of group communication with users during maintenance events. We strongly encourage users to become familiar with our Slack workspace ahead of the shutdown.</p>
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<td><p style="font-size:14px;line-height:22px;margin:16px 0;color:#3c4043">Contacts</p>
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<td><p style="font-size:14px;line-height:22px;margin:16px 0;color:#3c4043">Austin Leong<br>Sr. HPC Systems Administrator<br><a href="mailto:austin.leong@ucr.edu" target="_blank">austin.leong@ucr.edu</a></p>
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<td><p style="font-size:14px;line-height:22px;margin:16px 0;color:#3c4043">Emerson Jacobson<br>HPC Systems Administrator<br><a href="mailto:emerson.jacobson@ucr.edu" target="_blank">emerson.jacobson@ucr.edu</a></p>
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<td><p style="font-size:14px;line-height:22px;margin:16px 0;color:#3c4043">Thomas Girke<br>Professor<br>Director of HPC Center<br><a href="mailto:thomas.girke@ucr.edu" target="_blank">thomas.girke@ucr.edu</a></p>
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