<div dir="ltr"><div class="gmail_default" style="font-size:small">Please be aware of the expected maintenance of HPCC.</div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div style="margin:0px;padding:0px;border:0px;font-stretch:inherit;font-size:12pt;line-height:inherit;font-family:Calibri,Arial,Helvetica,sans-serif;vertical-align:baseline;color:black"></div></div></div></div><br><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">---------- Forwarded message ---------<br>From: <span dir="auto"><<a href="mailto:no-reply@hpcc.ucr.edu">no-reply@hpcc.ucr.edu</a>></span><br>Date: Thu, May 4, 2023 at 3:02 PM<br>Subject: [HPCC] Maintenance Shutdown Final Reminder<br>To: <<a href="mailto:no-reply@hpcc.ucr.edu">no-reply@hpcc.ucr.edu</a>><br></div><br><br><p>Hello HPCC users,</p>
<p>It has come to our attention that not all active HPCC users received an email notification
regarding the upcoming maintenance shutdown. You may disregard this message if you received
the previous emails, there is no new information to report. Otherwise, please continue
reading.</p>
<p>This is a courtesy reminder that HPCC will be executing a maintenance shutdown on
<strong>Friday, May 5, 2023</strong> at <strong>8:00 AM PDT</strong>.
and is expected to last <strong>2 days</strong>.
This time was chosen to overlap with a scheduled Genomics Building electrical shutdown on
the morning of <strong>May 6</strong>. UCR Facilities Services estimates that electrical work will be
completed by noon on Saturday, so <strong>Saturday afternoon</strong> is the earliest at which the cluster
can be brought back online.</p>
<p>You should save all work and log off of any nodes before the shutdown to avoid any
data loss.</p>
<p>If submitting jobs before the shutdown, you may notice an unusual "ReqNodeNotAvail"
error, followed by a list of nodes. This error is misleading. The shutdown is the actual
reason for this error. To get around this issue, you have the following options:</p>
<ol>
<li>Reduce the <code>--time</code> request for your job such that it will finish before the shutdown
time (about 17 hours as of this email)</li>
<li>Let your job wait in the queue. Your job will be automatically scheduled once the
maintenance shutdown is over.</li>
</ol>
<p>During the shutdown, all of our online services hosted from the Genomics Building will
be unavailable. This
includes, but is not limited to, SSH, RStudio Server, JupyterHub, web file access, and
email support. Our primary method of communication during the shutdown will be our Slack
channel:</p>
<p><a href="https://ucr-hpcc.slack.com/" target="_blank">https://ucr-hpcc.slack.com/</a></p>
<p>If you have any questions or concerns about this shutdown, feel free to contact us
either at the Slack channel above, or through our usual support email system:</p>
<p><a href="mailto:support@hpcc.ucr.edu" target="_blank">support@hpcc.ucr.edu</a></p>
<p>We understand that this shutdown will be disruptive to your research and teaching, and
for that we apologize. However, these maintenance shutdowns are necessary for the
reliability and performance of our cluster services. Thank you for your understanding.</p>
<p>Sincerely,</p>
<p>Austin Leong<br>
UCR High Performance Computing Center</p></div></div>