Daily Bulletin

HPC Resource Disruption & Resolution from Saturday, April 12

April 14, 2025

Derecho compute nodes went down Saturday, April 12, due to an issue with servicing and distributing their filesystem data.  Systems engineers quickly triaged the issue and returned Derecho to service several hours later.

All jobs running on Derecho at the time - approximately 10AM MDT - failed.  The disruption temporarily interrupted file system activities, which also caused running Casper jobs to fail.  For both systems, jobs that were queued at the time of the disruption remained so.  For any additionally questions regarding core hour refunds please reach out through https://rchelp.ucar.edu

© 2025 UCAR
Postal Address: P.O. Box 3000, Boulder, CO 80307-3000 • Shipping Address: 3090 Center Green Drive, Boulder, CO 80301
National Science Foundation
This material is based upon work supported by the National Center for Atmospheric Research, a major facility sponsored by National Science Foundation and managed by the University Corporation for Atmospheric Research. Any opinions, findings and conclusions or recommendations expressed in this material do not necessarily reflect the views of the National Science Foundation.