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.

Where to run small jobs that use only CPUs?

October 4, 2021 Updated: October 6, 2021

CISL recommends running small jobs that use only CPUs on the Casper cluster’s high-throughput computing (HTC) nodes. Casper has 64 HTC nodes specifically for running small batch jobs. It also has: • More shared resources than the Cheyenne share queue • A far higher concurrent-use limit for CPU cores than Cheyenne: 468 vs. 36. • More available memory, plus NVMe swap for overflow. Here’s an ex...

Systems downtime for October 4-8

October 1, 2021

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

Heads up! A change in Cheyenne environment propagation

September 28, 2021

Beginning October 20, as recently announced, users will be able to submit jobs to run on the Cheyenne and Casper systems from either of those systems with the introduction of the new peer-scheduling capability. To make peer scheduling possible, environmental settings will no longer be propagated from the submission host to PBS jobs on Cheyenne. Please see Propagating environment settings to a P...

System downtimes for week of September 27 - October 1

September 27, 2021

Stratus will be down from 10 AM - 12 PM, Monday the Sept 27th for hardware work. Nothing planned for Cheyenne, Casper, GLADE, Campaign Store, JupyterHub, or Quasar.

HPSS will be decommissioned Friday, October 1

September 27, 2021

Reminder! The HPSS tape archive will be decommissioned on Friday, October 1, at 5 p.m. MDT. This means file owners have just a few days left to access their files. Though time is growing short, you can still copy files. At present, the system is not very busy and enough bandwidth is available to allow for quick turnaround. If you need guidance, start here. If you have questions, please contact ...

Upcoming major change to PBS job behavior on Cheyenne

September 22, 2021

CISL is developing and testing peer-scheduling capability between Cheyenne and Casper, through which users will be able to submit jobs from Cheyenne to Casper, from Casper to Cheyenne, and craft job-dependency rules between jobs on both systems. More details on how to use this capability will come in future updates and documentation. All job submissions on Cheyenne currently are configured to i...