The Daily Bulletin

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

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.

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.

A recording of the November 9 webcast, “Moving from Yellowstone to Cheyenne,” is now available on the CISL web site. See the course page to review the presentation and download the slides.

The tutorial was presented to help Yellowstone users migrate their work to the new Cheyenne HPC system before Yellowstone is decommissioned at the end of December. It covers considerations when configuring your Cheyenne account for the first time, how to load supported software on Cheyenne, scheduling and running jobs using the PBS scheduler, and using MPI libraries for parallel jobs.

Additional training for how to run jobs on Geyser and Caldera from the Cheyenne system is being planned. Details will be announced soon.

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 4 tutorial

Attend in person (CISL Conference Room, ML34, space is limited)

Attend webcast

Register for December 19 tutorial

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

Attend webcast