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<span style="color: black; font-size: 12pt;">Hi RCC Users, </span></p>
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<span style="color: black; font-size: 12pt;"> </span></p>
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<span style="color: black; font-size: 12pt;">Here is the last update before the weekend (hopefully
</span><span style="color: black; font-size: 12pt; font-family: Segoe UI Emoji, sans-serif, serif, EmojiFont;">🤞</span><span style="color: black; font-size: 12pt;">).</span></p>
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<span style="color: black; font-size: 12pt;"> </span></p>
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<span style="color: black; font-size: 12pt;">On the HPC, all owner nodes and GPU nodes are online, and they are processing jobs submitted via Slurm. However, part of the cluster will remain offline through the weekend, including most of the general access nodes.
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<span style="color: black; font-size: 12pt;"> </span></p>
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<span style="color: black; font-size: 12pt;">Jobs submitted through the <i>backfill2</i> queue will run, but they may have to wait longer than usual before they start. We are asking for your patience over the weekend, and we will hopefully be able to bring
more of the cluster up on Monday.</span></p>
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<span style="color: black; font-size: 12pt;"> </span></p>
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<span style="color: black; font-size: 12pt;"><span style="color: black; font-size: 12pt;">Chilled water cooling has been the hold-up for most of the week. The contractors have one of the two primary chillers online and fully tested. However, we do not believe
they will have the other one online by the end of the day. We will continue to run temporary cooling along with the chiller over the weekend for some redundancy.</span></span></p>
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<span style="color: black; font-size: 12pt;"> </span></p>
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<span style="color: black; font-size: 12pt;">With only one of the two chillers running, there is no backup in case of a failure. The HPC nodes can heat up to room to near-dangerous levels very quickly, and we don't want to take any risks during this weekend.
We will, therefore, not bring the whole cluster up until we have reassurance that both chillers are functional.</span></p>
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<span style="color: black; font-size: 12pt;">Refer to the image below to see some of the wild temperature swings in the datacenter this past few days:</span></p>
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<span style="color: black; font-size: 12pt;"> </span></p>
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<span style="color: black; font-size: 12pt;"><img size="0" contenttype="image/png" style="width: 751px; height: 181px; cursor: pointer;" unselectable="on" tabindex="-1" width="751" height="181" data-outlook-trace="F:1|T:1" src="cid:79c2debc-24e7-4281-aef8-90d3e03ee9f9"></span><span style="color: black; font-size: 12pt;"></span></p>
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<span style="color: black; font-size: 12pt;"> </span></p>
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<span style="color: black; font-size: 12pt;">If the contractors can get the second cooling unit online by early next week, we will power up the full HPC as early as Monday. Either way, you can expect another message from the RCC Staff no later than 2pm on Monday.</span></p>
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<span style="color: black; font-size: 12pt;"> </span></p>
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<span style="color: black; font-size: 12pt;">Have a good weekend, and once again, thanks very much for your patience. As usual, comments and inquiries should be sent via email to
<a href="mailto:support@rcc.fsu.edu" target="_blank" rel="noopener noreferrer" data-auth="NotApplicable" data-linkindex="0">
support@rcc.fsu.edu</a>.</span></p>
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<span style="color: black; font-size: 12pt;"> </span></p>
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<span style="color: black; font-size: 12pt;">Best regards,</span></p>
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<span style="color: black; font-size: 12pt;">The RCC Team</span></p>
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