Messages & Announcements

  • 2018-08-17:  Crane: JupyterHub maintenance completed
    Category:  Maintenance

    The Crane JupyterHub maintenance has been completed and the system is available for use.

    If you experience any problems, please contact hcc-support@unl.edu


  • 2018-08-15:  Crane: JupyterHub maintenance Fri., Aug 17th @ 1pm
    Category:  Maintenance

    The Crane JupyerHub interface will be unavailable on Friday, August 17th, starting at 1pm for maintenance. This includes the Jupyter Notebook and the Sandstone interfaces. Maintenance is expected to take a half-hour or less. Users are encouraged to save and halt any running sessions to avoid unexpected issues. Batch job SLURM submissions will be unaffected by this maintenance. For questions or concerns, contact hcc-support@unl.edu.


  • 2018-08-14:  Crane: /work filesystem downtime resolved
    Category:  General Announcement

    The /work filesystem for Crane is restored as of 11:30am. A filesystem check was completed with no errors found.

    Running jobs which were accessing /work stalled until the filesystem was restored. This may have caused jobs to exceed their time limit. There was no data loss from this outage.


  • 2018-08-14:  Crane: /work filesystem unplanned downtime
    Category:  System Failure

    The /work filesystem for Crane is partially unavailable. One of the storage servers stopped responding around 7:00am today. Initial debugging suggests an issue with the Lustre server using excessive kernel memory. The storage server has been rebooted and we are currently running filesystem checks.

    Pending jobs will be held until the maintenance is complete.


  • 2018-08-05:  Tusker /work temporary outage
    Category:  General Announcement

    The Tusker /work filesystem unexpectedly went offline at 12:25pm today. Maintenance was performed and the system restored less than an hour later. Accesses to /work may have hung, users should check to make sure jobs did not timeout. No data loss or other consequences from this event are expected.


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