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 December 6 - 10

December 6, 2021

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

Software updates and future changes to defaults

December 2, 2021

New versions of many software packages – including netCDF, HDF5, NCO, CDO, GDAL, R, Singularity, and CMake – have been installed on both Cheyenne and Casper. In addition, new releases of MPT (version 2.25) and Arm Forge (version 21.1.1) have been installed, resolving known bugs relating to collective parallel IO and memory debugging, respectively. The parallel IO bug in MPT affects versions 2.2...

Cheyenne will be unavailable December 28 - 30

December 1, 2021 Updated: December 2, 2021

The Cheyenne system’s compute nodes will be unavailable for running batch jobs for three days beginning the morning of Tuesday, December 28. The downtime is necessary to allow CISL staff to perform thorough testing of the recently installed power system components to support Derecho and other associated systems. Cheyenne’s login nodes and the Casper cluster are expected to be available througho...

Python now supported via new conda module

November 29, 2021

To better support user-maintained Python environments and unify the user experience across terminal and JupyterHub sessions, CISL now provides Python support via the conda package manager. Cheyenne and Casper users – either new to conda or more experienced – can take advantage of our new conda module, which can be used to activate environments without any shell initialization. The module also p...

No systems downtime for November 29-December 3

November 24, 2021 Updated: November 29, 2021

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

Tell us about your GPU training needs by Tuesday

November 29, 2021

Reminder: CISL’s High Performance Computing Division (HPCD) is asking users for their input on GPU-computing training needs as it develops new learning resources for early 2022. In preparation for greater availability of GPU resources on the Casper cluster and the new Derecho system, HPCD asks GPU and non-GPU users of NCAR’s high-performance computing resources to complete this survey by Novemb...