[Lilab] Fwd: [UCR HPCC] Maintenance Shutdown Reminder

[Wei Vivian Li]

Please be aware of the upcoming HPCC maintenance shutdown.

Vivian



---------- Forwarded message ---------
From: HPCC_noreply <no-reply at hpcc.ucr.edu>
Date: Thu, Jan 29, 2026 at 6:39 AM
Subject: [UCR HPCC] Maintenance Shutdown Reminder
To: HPCC User <weil at ucr.edu>


[UCR HPCC] Maintenance Shutdown Reminder
[image: UCR High Performance Computing Center]
------------------------------

HPCC Maintenance Shutdown Reminder

When

   - Begins: Wedsnesday, Feb 18 2026, 8am
   - Ends: Thursday, Feb 19 2026, 8pm

Description

UCR HPCC will be performing a maintenance shutdown at the above specified
time. This shutdown is necessary for routine software updates, and certain
configuration changes that can not be done while the cluster is active.

Benefits

Regular cluster maintenance keeps our systems performant, secure, and
reliable.

Slurm "ReqNodeNotAvail"

A Slurm reservation block has been set to prevent jobs from running during
maintenance. If your job is stuck in the queue with the reason
"ReqNodeNotAvail", you may resubmit your job with a shorter duration, or
let the job wait in the queue until the shutdown concludes.

Users should also ensure that all of their cluster work is saved, and we
recommend logging off all HPCC sessions before the shutdown.

Services Impacted

Most services hosted by HPCC will be down during this period. This
includes, but is not limited to:

   - Cluster access (SSH, Slurm, data access), including HTTP access to
   user data.
   - All services provided by OnDemand: RStudio/Posit, MATLAB, Jupyter, etc.

Normal email support (support at hpcc.ucr.edu) will continue to operate.
However, HPCC's Slack workspace (https://ucr-hpcc.slack.com) 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.

We apologize for the disruption. Thanks for your understanding.
------------------------------

Contacts

Austin Leong
Sr. HPC Systems Administrator
austin.leong at ucr.edu

Emerson Jacobson
HPC Systems Administrator
emerson.jacobson at ucr.edu

Thomas Girke
Professor
Director of HPC Center
thomas.girke at ucr.edu
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