Daily Bulletin Archive

May. 25, 2018

CISL is asking for input from researchers in order to gauge their interest in Phase 6 of the Coupled Model Intercomparison Project (CMIP6) and planned use of CISL’s CMIP Analysis Platform.

NCAR data products are expected in mid-2018 and will be available to CMIP Analysis Platform users on the GLADE file system. As estimated time frames for availability of data from other modeling centers become known, CISL will publish that information for the community to help researchers make their plans. When other data sets are available, researchers who use the CMIP Analysis Platform will be able to submit requests to have the data sets they need added to GLADE.

Researchers who are or may be planning to use CMIP6 data are asked to respond to this survey by Friday, May 25, and are encouraged to share the survey with others.

May. 25, 2018

The CISL User Services Section will present an in-person and online tutorial at 9:30 a.m. Friday, May 25, at the NCAR Mesa Lab in Boulder for new users of NCAR’s high-performance computing (HPC) systems. The 60-minute tutorial will cover basic usage and typical workflows for Cheyenne, Geyser, and Caldera.

Topics include:

  • The Cheyenne computing environment

  • Accessing software, including compilers and MPI libraries

  • Submitting batch jobs using the PBS scheduler

  • Using Slurm to schedule data analysis and visualization tasks

  • A quick look ahead to the new Casper system

Register to attend in person—at the VisLab in NCAR’s Mesa Lab (ML4) in Boulder—or via webcast by selecting a link below:


May. 24, 2018

Cheyenne system administrators will perform preventative maintenance procedures on the PBS job scheduler Thursday, May 24, beginning at noon MDT. The maintenance is expected to take less than one hour to complete.

Most PBS commands will not work during the maintenance outage, including qstat and qsub, and new job submissions will not be possible.

No batch jobs are expected to be lost as a result of the maintenance. Jobs that are executing when the maintenance begins will continue to run without interruption. Jobs that are queued for execution or in a hold state will remain in those states until PBS is returned to service. Access to Cheyenne’s login nodes will not be interrupted.

Users will be notified when PBS is returned to service.

May. 21, 2018

No downtime: Cheyenne, GLADE, Geyser_Caldera and HPSS

May. 17, 2018

Funders and publishers increasingly require scientists to make their data open, and an AGU webinar at noon MDT on Thursday, May 17, can help you meet these evolving requirements. Shelley Stall, Director of Data Programs at AGU, will present “Data Management Fundamentals” to explore data management resources and proven strategies for making research more discoverable and understandable. See the AGU announcement to register.

May. 15, 2018

HPSS Disaster Recovery downtime: Tuesday, May 16th 7:30 a.m. - 11:30 a.m.

No downtime: Cheyenne, GLADE, Geyser_Caldera

May. 11, 2018

Video and slides are now available here from a recent CISL Seminar Series presentation by Dave Hart, NCAR/CISL User Services Manager, about how new storage systems and practices are being put into place this year to reflect the new reality facing users of CISL's petascale computational environments. With input from users and taking into account recent changes in the storage technology landscape, CISL has begun to transform its storage offerings while working with users to help them understand the trade-offs that they now face and will continue to face.

More information and training support will be coming over the next several weeks and months.

May. 11, 2018

Plans are under way to implement major system updates to Geyser, Caldera and the GLADE file system in June. The Geyser and Caldera clusters’ operating systems will be upgraded to CentOS 7, and GLADE will be upgraded to a new version of GPFS.

Users will need to recompile their executables to run on Geyser and Caldera. Job scripts may need to be updated to run in the CentOS 7 environment as version numbers of most software on the systems will be different.

CISL has begun building all of the required system software such as compilers, the module environment, and critical libraries including NetCDF, MATLAB and IDL. Once those tasks are completed later this month, several Geyser and Caldera CentOS 7 nodes will be made available for users to begin testing and rebuilding their applications.

GLADE will be upgraded to GPFS version 5.0, which will provide improved stability, performance and maintainability. This upgrade will not require users to make any changes.

Updates and more details, including target dates, will be posted in the Daily Bulletin as they become available.

May. 8, 2018

HPSS downtime: Tuesday, May 8th, 7:30 a.m. to 3:00 p.m. for a library management system upgrade

DAV maintenance: Monday, May 7th, 12:00 p.m. to 1:00 p.m.

Cheyenne planned maintenance: Tuesday, May 8th, 8:00 a.m. to 6:00 p.m.

No downtime: GLADE

May. 8, 2018

The Cheyenne cluster will be unavailable from 8 a.m. to 6 p.m. MDT today, May 8, to allow CISL staff and HPE engineers to perform hardware maintenance and address several known issues with the PBS job scheduler.

Users will be unable to log in during the maintenance period or submit new jobs. Running jobs that have not finished when maintenance begins will continue executing to completion. Jobs that have been submitted and are queued for execution will be dispatched by PBS as they normally would be.

Users will be informed via the CISL Notifier service when Cheyenne  is returned to service.