Messages & Announcements

  • 2018-12-19:  Crane: system is available for use, /work filesystem checks ongoing
    Category:  General Announcement

    Checks on the two storage targets were completed this morning. The results of the scan for one of the targets requires us to make a full consistency scan of Crane's /work filesystem. This process can be done concurrently while /work is being used by jobs.

    Please check the status of your jobs if they were running at the time of the failure. These jobs may have experienced I/O errors if they were utilizing files that were backed by these two targets.


    Checks on the two storage targets were completed this morning. The results of the scan for one of the targets requires us to make a full consistency scan of Crane's /work filesystem. This process can be done concurrently while /work is being used by jobs.

    Please check the status of your jobs if they were running at the time of the failure. These jobs may have experienced I/O errors if they were utilizing files that were backed by these two targets.

  • 2018-12-19:  Crane: /work filesystem unplanned downtime
    Category:  System Failure

    The /work filesystem for Crane is partially unavailable. One of the storage servers had two storage targets go offline around 12:07am today. The storage server will be rebooted and have filesystem checks performed.

    Pending jobs will be held until the maintenance is complete.

    A follow-up announcement will be sent when the system is brought to a production state.


    The /work filesystem for Crane is partially unavailable. One of the storage servers had two storage targets go offline around 12:07am today. The storage server will be rebooted and have filesystem checks performed.

    Pending jobs will be held until the maintenance is complete.

    A follow-up announcement will be sent when the system is brought to a production state.

  • 2018-11-28:  Crane: GPU driver update completed
    Category:  Maintenance

    The GPU driver updates have been successfully completed and the GPU nodes are back in service.

    **If you are using your own conda environments for GPU jobs, please note:**
    You may need to update certain packages in your conda environment(s) to newer versions in order to avoid errors with the updated drivers. We highly recommend running a small test job to check functionality before resuming large-scale jobs. If you encounter any issues, please contact us at hcc-support@unl.edu and we will be happy to assist you.

    Please contact hcc-support@unl.edu with any questions or issues regarding this maintenance.


  • 2018-11-28:  Crane: GPU driver update Wed., Nov 28 @ 9am
    Category:  Maintenance

    The Crane GPU nodes will be unavailable on Wednesday, Nov. 28th starting at 9am to apply GPU driver updates. This update is necessary to support newer versions of the CUDA Toolkit. Jobs will be held prior to the maintenance and will resume normally afterwards. During this time, running a Jupyter Notebook with GPU support will not be possible. We expect the maintenance to be concluded no later than 5pm the same day.

    Please contact hcc-support@unl.edu with any questions or issues regarding this maintenance.


  • 2018-10-23:  Upcoming removal of $WORK on Tusker
    Category:  General Announcement

    During the upcoming relocation of the Tusker resource scheduled for early 2019, ALL DATA ON THE $WORK FILE SYSTEM WILL BE LOST. In preparation for the migration, USERS WILL NEED TO MOVE ANY IRREPLACABLE DATA FROM $WORK AS SOON AS POSSIBLE AND NO LATER THAN DECEMBER 15TH. After successful completion of the move, data can then be reloaded onto Tusker. In the interim, possible storage solutions would be $COMMON and Attic. $COMMON will allow the convenience of keeping the data accessible from Crane. For additional data security, our extended resource Attic provides a backed up option at a minimal cost. For more information on the relocation, please see the announcement posted in the September release of the Holland newsletter: https://newsroom.unl.edu/announce/holland/8444/48362 If you have any questions or concerns regarding this, please contact us at hcc-support@unl.edu so we can assist you.


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