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.

No system downtimes for week of January 2 - 6

December 30, 2022 Updated: January 3, 2023

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

Where to run small, CPU-only jobs?

December 29, 2022

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. See Starting ...

How to get help using NCAR supercomputers

December 28, 2022

Are you a researcher or other user who needs help working with NCAR’s Cheyenne and Casper 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 our HPC user ...

Holiday schedule for Help Desk and Consulting Services

December 22, 2022

The CISL Help Desk team and Consulting Services Group will be off on December 26 and January 2 so staff members can enjoy the holidays along with the rest of NCAR and UCAR. Users can still submit help requests as needed or call 303-497-2400 to report issues that might require attention.

Updated: Conda/Python documentation for NCAR HPC users

December 21, 2022

A new, expanded version of the documentation for using Conda and Python on NCAR HPC systems is now available. In addition to other changes, Using Conda and Python includes details about the new update schedule for the NCAR Python Library as well as information to help researchers decide whether to use the managed environments CISL provides or create their own environments. Please contact HPC Us...

Tutorial for new HPC users now online

December 21, 2022

Video and slides from the December 13 tutorial presented by Mea Trahan of the CISL Consulting Services Group are now available here. The tutorial introduces new users to the Cheyenne high-performance computing system and the Casper cluster for data analysis, visualization, and machine learning. Topics covered include: • What HPC systems are available at NCAR and how to access them • Basics of j...