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 weekly update

February 23, 2023

HPE engineers began configuring and testing the Slingshot interconnection network for the Derecho system this week. The hardware checkout phase also began this week, and HPE has identified and replaced some faulty and marginal hardware on the system. This hardware checkout phase will continue for at least another week.

System downtimes for week of February 21 - 24

February 21, 2023

The Cheyenne1 login node is scheduled for maintenance on February 23rd 10am - 2pm None planned for Casper, GLADE, Campaign Storage, Quasar, Stratus, or JupyterHub.

VAPOR visualization of the East Troublesome fire in 2020 from a Grand Lake, Colorado, perspective

How to get help visualizing research data

February 17, 2023

Researchers who want help visualizing data to demonstrate the results of their scientific computing can request expert assistance and collaboration from CISL. This service is available to researchers using specialized applications on data analysis and visualization resources that CISL manages. CISL visualization staff have special expertise in CISL-developed software such as VAPOR but are open ...

Cheyenne login node maintenance scheduled

February 16, 2023

A single Cheyenne login node – cheyenne1 – will stop receiving new connections on Monday, February 20, to minimize the impact of hardware maintenance scheduled for that node from 10 a.m. to 2 p.m. MST on Thursday, February 23. User sessions that remain active at the start of the maintenance downtime on Thursday will be terminated. Users who are affected can simply log in again to be placed on o...

Tutorial published: Using Dask on HPC Systems

February 16, 2023

Video recordings and other content from the recent Dask tutorial are now available to the user community at Using Dask on HPC Systems. The tutorial focuses on the effective use of Dask on high-performance computing systems like Derecho and Casper. Presented by the CISL Consulting Services Group and the NCAR Earth System Data Science Initiative, it starts with a session for novice Dask users and...

Allocation accounting changes now in effect

February 13, 2023

CISL has implemented the changes that were announced in January to account for the use of GPU resources on the Casper cluster. The charging algorithm update for jobs on shared CPU nodes on both Casper and Cheyenne also has been implemented. Projects that have used Casper GPU resources in the past year have all now received an initial GPU-hours allocation based on that previous use. Charges will...