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.

Derecho launches operations

July 7, 2023

NCAR has launched operations of its newest supercomputer, “Derecho,” at the NCAR-Wyoming Supercomputing Center in Cheyenne. Built by Hewlett Packard Enterprise, Derecho is a 19.87-petaflops system, with about 3.5 times the computing speed of the previous NCAR supercomputer, “Cheyenne.” Derecho is initially being used for a set of 15 projects by scientists at NCAR as well as at universities acro...

NCAR HPC users invited to July 11 user group meeting

July 6, 2023

All NCAR HPC users are invited to the NCAR HPC User Group (NHUG) monthly meeting from 9 to 10 a.m. MDT on Tuesday, July 11. CISL staff will discuss Derecho Computing Environment, Campaign storage access on Cheyenne and Upcoming Cheyenne Outage due to hardware issues. Early Derecho users will also share their experience about the new machine. Please be advised that the NHUG meeting for July ...

UPDATE: Cheyenne downtime planned July 31-August 4 to address ongoing network performance issues

July 5, 2023

The Cheyenne InfiniBand high-speed network continues to operate in a degraded state after the failure of two switches. CISL and HPE staff are planning to repair the network during a full system downtime the week of July 31. The precise duration of the downtime is unknown until the extent of the remediation work is identified – some of which will need to be discovered when the downtime and requ...

No system downtimes for week of July 3 - July 7

July 3, 2023

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

Reminder: Acknowledge NCAR and CISL support in your publications

June 30, 2023

Acknowledging the support of NCAR and CISL computing when you publish research results helps ensure continued support from the National Science Foundation and other sources of funding for future high-performance computing systems. It is also one of the requirements of receiving an allocation, as was noted in your award letter. The reporting requirements and recommended wording of acknowledgment...

Cheyenne downtime planned August 7-11 to address ongoing network performance issues

June 26, 2023

The Cheyenne InfiniBand high-speed network continues to operate in a degraded state after the failure of two switches. CISL and HPE staff are planning to repair the network during a full system downtime the week of August 7. As this repair is a very high priority, we are actively pursuing options to accelerate the repair and schedule an earlier maintenance window if at all possible. The prec...