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July 2026 Maintenance Update

· 2 min read
Kristen Finch
Kristen Finch
Director of Research Computing Solutions

Scheduled Downtime​

On Tuesday July 14, 2026, the Hyak team will perform scheduled maintenance on both the Tillicum and Klone clusters:

  • Tillicum Maintenance: 9:00 AM – 5:00 PM
  • Hyak Klone Maintenance: 9:00 AM – 5:00 PM
  • Kopah object storage and Globus services will be unavailable during the switch reboot.

Maintenance reservations are in place. This maintenance window will include routine system updates, a reboot of a core network switch, and other infrastructure maintenance to help ensure the continued reliability and performance of our services.

Looking Ahead: Extended August Maintenance​

We also want to provide advance notice that our August Klone maintenance will be an extended maintenance window spanning Tuesday, August 11 at 9:00 AM through Wednesday, August 12 at 5:00 PM. During this maintenance, we will migrate Klone's node provisioning system. This work will retire deprecated software, simplify cluster administration, and align Klone's management infrastructure with Tillicum, making it easier for us to maintain both systems consistently going forward.

warning

Important Storage Reminder for Hyak Klone​

Hyak Klone does not provide backup, persistent storage, or archival storage. All data on Klone exists as a single copy and is therefore vulnerable to loss due to hardware failure, filesystem issues, facility damage, or natural disasters. Users are solely responsible for transferring important results to external systems (for example, Kopah S3 or Lolo Archive) during the course of their project if persistent or long-term storage is required. Retaining long-term or archival data on Klone is against administrative guidance.

Office Hours Update​

As a reminder, we will continue hosting HPC office hours through the summer online. Cloud office hours will be postponed until the Fall term due to low attendance. We will continue to offer Cloud Office Hours by appointment through the summer.

Having trouble? Get Research Computing support.

Happy Computing,

Hyak Team

June 2026 Maintenance Update

· 3 min read
Kristen Finch
Kristen Finch
Director of Research Computing Solutions

June Maintenance Schedule​

We want to provide an early heads-up about our June maintenance periods.

Scheduled Downtime:​

  • Tillicum: Tuesday, June 9, 9:00 AM – 5:00 PM
  • Klone: Tuesday, June 16, 9:00 AM through Wednesday, June 17 5:00 PM

Maintenance reservations are in place. Jobs whose --time limit would extend into the maintenance window will not start. Adjust your jobs accordingly! Additionally, work will include login nodes, so any active SSH, screen, or tmux sessions will be closed at the start of maintenance.

The Tillicum maintenance is expected to be routine and shorter in duration, primarily covering system updates and security patches.

The Klone maintenance window is longer than usual due to significant backend account management and infrastructure improvements. Most of this work should be transparent to users, but it will improve update turnaround time, address existing backend deficiencies, and bring Klone and Tillicum into closer alignment operationally and administratively.

warning

Important Storage Reminder for Hyak Klone​

Hyak Klone does not provide backup, persistent storage, or archival storage. All data on Klone exists as a single copy and is therefore vulnerable to loss due to hardware failure, filesystem issues, facility damage, or natural disasters. Users are solely responsible for transferring important results to external systems (for example, Kopah S3 or Lolo Archive) during the course of their project if persistent or long-term storage is required. Retaining long-term or archival data on Klone is against administrative guidance.

Office Hours Update​

We will continue hosting office hours through the summer, but after the end of spring term on June 12, all office hours will move online.

  • Cloud Computing Office Hours – Every other Tuesday at 10am on Zoom. Check our events Calendar.
  • Hyak and Tillicum Office Hours:
    • Wednesdays at 2pm on Zoom. Attendees need only register once and can attend any of the occurrences with the Zoom link that will arrive via email. Click here to Register for Wednesday Zoom Office Hours.
    • Thursdays at 2pm in person in eScience (through June 12 only). (address: WRF Data Science Studio, UW Physics/Astronomy Tower, 6th Floor, 3910 15th Ave NE, Seattle, WA 98195).
  • Check out our Event Calendar to find office hours sessions and remote joining details.

RCC STF Usage Check-In​

If you use Research Computing Club (RCC) STF-supported resources, please complete the 2026 RCC Usage Check-In Survey. This reporting helps us maintain funding for student Hyak accounts, Tillicum credits, and cloud credits, and is required to maintain access to RCC-supported services.

Please do not report work completed on non-STF lab or departmental accounts.

eScience AI in Practice Summer Institute​

The eScience Institute’s AI in Practice Summer Institute will take place July 27–31 and will provide hands-on training in practical AI methods for research, including deep learning foundations, foundation models, and project-based workflows.

The program is open to researchers across disciplines, including students, postdocs, faculty, and staff. Space is limited and priority is given to UW participants.

Having trouble? Get Research Computing support.

Happy Computing,

Hyak Team