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.

New Hostnames for Casper HPC Login Nodes

January 6, 2026

Recently, a new set of Casper login nodes have been added as available login options for Casper HPC users. Specifically, three nodes crlogin[1-3] were added and users who login via casper.hpc.ucar.edu may be assigned these new nodes. If in any of your workflows or scripts you have manually specified either of the two casper-login[1-2].hpc.ucar.edu login nodes as the Casper login hostname, plea...

NASEM - “Bridging AI & Earth Systems Forecasting Applications” Webinar and Workshop

December 30, 2025

The final virtual webinar “Bridging AI & Earth Systems Forecasting Applications” of a 4-part educational webinar series, AI for Weather & Climate Forecasting, which is an activity of the National Academies Roundtable on Artificial Intelligence & Climate Change, is scheduled for January 8, 2026 12pm to 1pm MT. All are invited to attend or register to receive a recording of the event. The series...

Where to run small, CPU-only jobs?

December 30, 2025

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: • Shared resources rather than dedicated Derecho nodes. • More available memory, plus NVMe swap for overflow and local storage. • Direct PBS cross-submission from Derecho. See Starting Casper Jobs f...

How to get help visualizing research data

December 30, 2025

Would you like assistance in visualizing data, so that you can better demonstrate the results of your scientific computing? Researchers can request expert assistance and collaboration from the Visualization Services and Research group (ViSR) at CISL. The ViSR team uses advanced 3D modeling and visualization tools to design infographics, animations, web interactives, and more. ViSR has produce...

NSF NCAR research aircraft flights span the globe

December 30, 2025

NSF NCAR flying labs have facilitated groundbreaking science across the world. Now you can explore the flight paths of NSF NCAR planes during more than 50 campaigns over the past two decades online. Check it out!

Join us in Houston: NSF NCAR Town Hall at AMS26

December 22, 2025

Attending the AMS Annual Meeting? Don’t miss the NSF NCAR Town Hall: “Advanced Computing, Data Services, Software, and Educational Resources for Earth System Science” on Wednesday, January 28, 2026 from 12:15 to 1:15 pm CT. Hosted by the Computational and Information Systems Laboratory (CISL), this on-site session is your chance to get a first look at the future of our infrastructure. We will ...