Daily Bulletin Archive

Jan. 2, 2018

Scheduled Downtime: Cheyenne, Geyser and Caldera: Tuesday Jan. 2, 6 am to 6 pm

No downtime: GLADE and HPSS

Dec. 31, 2017

The Yellowstone supercomputing cluster will be decommissioned on December 31, 2017. The system will be powered down on that date and no longer available to users.

The Geyser and Caldera clusters will remain in production until the end of 2018. Users can learn about how to access those systems from the Cheyenne cluster in training sessions are scheduled for December 4 and 19. See Training: How to access Geyser and Caldera from Cheyenne for more details and how to register.

Users who have not already done so are strongly encouraged to migrate their work to Cheyenne as soon as possible to avoid unnecessary interruptions. Documentation available to help with the transition includes this Quick start overview, procedures and scripts for running jobs, and this recorded tutorial. For help in migrating job scripts or rebuilding executables, please contact cislhelp@ucar.edu.

It is not necessary to copy or move files to HPSS or to another disk space to ensure that they are available from Cheyenne after Yellowstone’s decommissioning. All files in the GLADE system file spaces—home, scratch, work, and project—are accessible via Cheyenne already. Copying or archiving files unnecessarily will waste expensive tapes and valuable disk space while increasing use of your allocation.

See our allocations documentation if you do not already have a Cheyenne allocation. University users who want to convert an existing Yellowstone allocation to a Cheyenne allocation should email that request to cislhelp@ucar.edu.

Dec. 27, 2017

CISL has resolved some issues that prevented the Systems Accounting Manager (SAM) from updating allocation usage records for several days recently. All records should be up to date and available now in SAM.

Dec. 22, 2017

University users who would like to have their unused Yellowstone allocations transferred to Cheyenne should make their requests well before the end of the year, when the Yellowstone system is decommissioned and the allocations expire on December 31.

The CISL Help Desk will be closed for the holidays on Monday, December 25, and Monday, January 1. Please send your allocation transfer requests to cislhelp@ucar.edu before Christmas to be sure the resources are available on Cheyenne on January 1.

Dec. 19, 2017

Cheyenne users can now run jobs on the Geyser and Caldera clusters via the Slurm job scheduling system. To learn how, refer to the online documentation and consider attending one of the training sessions that are scheduled for December 4 and 19. See Training: How to access Geyser and Caldera from Cheyenne for more details and how to register.

Approximately half of the Geyser and Caldera nodes are accessible from Cheyenne. The remaining nodes will remain accessible from Yellowstone until the end of this month when Yellowstone will be decommissioned. Shortly after January 1 all of Geyser and Caldera will be available from Cheyenne.

Dec. 18, 2017

No Downtime: Yellowstone, Cheyenne, Geyser_Caldera, GLADE and HPSS

Dec. 18, 2017

The CISL User Services Section will present an in-person and online tutorial at 9 a.m. MST Tuesday, December 19, on how to run jobs on the Geyser and Caldera clusters from the Cheyenne HPC system. The Yellowstone system is being decommissioned December 31, but Geyser and Caldera will remain in production throughout 2018.

The 45-minute tutorial will cover submission and monitoring of jobs with the Slurm scheduler, running an interactive job, performing graphically intensive tasks on Geyser, and considerations when using Cheyenne and Geyser/Caldera together in a workflow. The session will include time for questions.

Register to attend in person at NCAR’s Mesa Lab in Boulder or via webcast by selecting a link below:

Attend in person (Chapman Room, ML245, space is limited)

Attend webcast

Dec. 15, 2017

Cheyenne will be taken off line at approximately 10 a.m. MST today to allow CISL staff to install an updated version of the PBS Pro job scheduler system. The software update is expected to resolve the root cause of the recent system interruptions. The outage is expected to last until approximately 5 p.m. but every effort will be made to return the system to service as soon as possible.

A system reservation is in place to prevent batch jobs from executing after 10 a.m. All batch queues will be suspended and the Cheyenne login nodes will be unavailable throughout the outage.  All jobs that are still executing when the outage begins will be killed. Yellowstone users may experience brief periods of slow performance during the Cheyenne outage.

CISL will inform users through the Notifier service when the system is restored. We apologize to all users for the inconvenience this will cause and thank you for your patience.

Dec. 13, 2017

A recording of the December 4 tutorial, “How to access Geyser and Caldera from Cheyenne,” is now available on the CISL web site. See the course page to review the presentation and download the slides.

The 45-minute tutorial covers how to start interactive jobs and batch jobs with the Slurm scheduler, performing graphically intensive tasks on Geyser, and considerations when using Cheyenne and Geyser/Caldera together in a workflow.

The tutorial will be presented live again at 9 a.m. MST on Tuesday, December 19. Those interested in attending can register using one of these links:

Dec. 11, 2017

NCAR data management experts will engage the community in a poster session on December 11 at the AGU 2017 Fall Meeting to help shape a 2018 National Science Foundation workshop focused on developing requirements and expectations for a prospective new digital repository service.

The envisioned Geoscience Digital Data Resource and Repository Service (GeoDaRRS) would complement existing NSF-funded data facilities by providing data management planning support resources for the general community and repository services for researchers who have data that do not fit in any existing repository. GeoDaRRS would support NSF-funded researchers in meeting data archiving requirements set by the NSF and publishers for geosciences, thereby ensuring the availability of digital data for use and reuse in scientific research going forward.

See this abstract on the AGU Fall Meeting site for more information.