Daily Bulletin Archive

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.

Dec. 9, 2017

The NCAR Data Sharing Service and other Globus services will be unavailable for several hours on Saturday, December 9, starting at approximately 9 a.m. MST. The service is expected to be fully restored and operational by 1 p.m. Globus transfers that are in progress will be suspended for completion after the service is restored.

Dec. 8, 2017

The PEARC18 committee has extended the deadline for soliciting abstracts for contributions that will help shape the technical program of the next annual Practice & Experience in Advanced Research Computing (PEARC) conference until December 8. The conference will take place July 22-27, 2018, in Pittsburgh.

“We invite contributions and participation from everyone who works to realize the promise of advanced computing as the enabler of knowledge creation and application without unnecessary barriers,” the committee announced. The opportunity to submit proposals is open until 10 p.m. EST on Friday, December 8. Authors of proposals selected for technical review will be contacted by Friday, January 19, 2018.

Topics of interest include, but are not limited to:

  • Procurement, operation and management of advanced computing and data infrastructure

  • Facilitating productive and secure use of advanced computing and data infrastructure

  • Adopting and adapting new and emerging technologies

  • Creative uses of advanced computing and data infrastructure

  • Developing a highly skilled workforce realizing the full potential of all demographics

The PEARC18 theme is “Seamless Creativity.” See the conference website for more information about abstract requirements and the review process.

Dec. 8, 2017

The CISL Help Desk and Consulting support will close at 3:00 p.m. Friday so staff members can attend UCAR functions. 

Users may still submit tickets to cislhelp@ucar.edu or call 303-497-2400 for assistance.

Dec. 4, 2017

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

Dec. 1, 2017

The CISL User Services Section will present an in-person and online tutorial at 1:30 p.m. MST Monday, December 4, and again 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:

Register for December 19 tutorial

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

Attend webcast

Nov. 30, 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.

Yellowstone’s maintenance contract expires December 20. CISL will continue to operate the system as a courtesy to users but should any hardware components fail before December 31, no effort will be made to repair them.

Please note that it is not necessary to copy or move files to HPSS or to another disk space as a result of Yellowstone’s decommissioning. All files in the GLADE system file spaces—home, scratch, work, and project—are accessible via Cheyenne. Copying or archiving files unnecessarily will waste expensive tapes and valuable disk space while increasing use of your allocation.

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 Cheyenne users make the transition includes this Quick start overview as well as procedures and scripts for running jobs. For help in migrating job scripts or rebuilding executables, please contact cislhelp@ucar.edu.

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 mail that request to cislhelp@ucar.edu.

Nov. 29, 2017

Registration is open for a workshop for new NCL users February 6-9, 2018, at NCAR’s Center Green Campus in Boulder. The workshop will include introductory lectures on NCL, scientific data formats, and graphics, and daily hands-on labs. During the labs, instructors will work with students to help them write NCL programs for analyzing their own data.

Registration is limited to 16 students. The registration deadline is January 15, 2018. Travel support is available on a first-come, first-served basis for qualified students from EPSCoR states or minority-serving institutions. The deadline for applying for funds is December 11, 2017.

Get full details and a link to the registration form here.