CISL Daily Bulletin

The Daily Bulletin delivers news about CISL’s high-performance computing environment, training opportunities, scheduled maintenance, and other events of interest to the user community. To get the Daily Bulletin by email, use this link to subscribe.

How to get help using NCAR supercomputers

April 18, 2023

Are you a researcher or other individual who needs help working with NCAR’s high-performance computing systems? You can get expert help a number of different ways, from submitting a help ticket any time to calling or even scheduling an appointment with a CISL supercomputing consultant. For details, go to ncar.pub/HPC-user-support on the NCAR/CISL Advanced Research Computing portal. You’ll find ...

Derecho weekly update

April 17, 2023

The Derecho project team and HPE engineers continued working through the Acceptance Testing Phase (ATP) and encountered several functional and resiliency issues. The project team worked with HPE subject matter experts and have resolved most of those issues, including some major performance problems with the Lustre scratch file system. The team also completed a second power-down and power-up tes...

No system downtimes for week of April 17 - 21

April 14, 2023

None planned for Cheyenne, Casper, GLADE, Campaign Storage, Quasar, Stratus, or JupyterHub.

HPC user support services unavailable April 22-23

April 13, 2023

A number of HPC user support services will be unavailable during scheduled maintenance at NCAR’s Mesa Lab facility in Boulder from 3 a.m. MDT on Saturday, April 22, to 8 p.m. MDT on Sunday, April 23. The affected services include HPC user documentation on the Advanced Research Computing portal, the NCAR Research Computing Help Desk, and the Enterprise Service Desk for NCAR/UCAR staff support. H...

Cheyenne compute rack updates start April 12

April 11, 2023

CISL system engineers will deploy a minor operating system image update to Cheyenne compute node racks this week in order to facilitate additional file system access. The updates will be done one rack at a time starting on Wednesday, April 12, in a series of rolling reservations and reboots. Users may notice a slight reduction in throughput as each rack is drained and subsequently reintegrated ...

System downtimes for week of April 10 - 14

April 10, 2023

Campaign Storage and Casper batch queues will be down from approximately 8 a.m. to 5 p.m. MDT on Tuesday, April 11, and Campaign Storage will not be available through Globus during this window. No downtime is planned for Cheyenne, GLADE, Quasar, Stratus, or JupyterHub.