The Daily Bulletin

Globus services will be down on Tuesday starting at 10:00 for approximately 4 hours for an upgrade. All transfers will be paused during the outage and restarted once completed.

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

The PEARC18 committee is soliciting abstracts for contributions that will help shape the technical program of the next annual Practice & Experience in Advanced Research Computing (PEARC) conference, which 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 1. 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.

The Higher Education Campus Alliance for Advanced Visualization (THE CAAV) will host its second annual conference October 25-27, 2017, at the University of Wyoming Conference Center in Laramie.

The 2nd Annual CAAV Conference is aimed at all visualization practitioners, those starting out as well as those with long-standing experience. The conference will feature a keynote address by Dr. Maxine Brown of the Electronic Visualization Laboratory, University of Illinois at Chicago. It will also include technical presentations on collaborative data visualization and rapid development of immersive environments, and strategic sessions on technology facility sustainability.

THE CAAV is a volunteer-driven, non-profit organization. Its purpose is to act as an information resource for worldwide higher education focusing on immersive visualization platforms, advanced video screen formats, advanced visualization software, and issues of sustainability and operation for high-tech visualization facilities.

CISL staff have updated the Cheyenne documentation regarding how to schedule and run dependent jobs using the PBS Pro job scheduler. The new procedure described in one example places a hold on the initial job in a chain until all jobs in the chain are ready to submit, at which point the user releases the hold to start the sequence. A user following previous procedures found that if one job finished too quickly, subsequent jobs could fail to start because of when PBS Pro checks for dependencies. The new recommended procedure avoids that issue.

The scheduled outages previously announced for the Cheyenne, Yellowstone, Geyser, and Caldera clusters have been revised to a significantly shorter time period. In the updated schedule the systems will be unavailable from 8 a.m. MDT on Tuesday, October 31, until 6 p.m. MDT Friday, November 3.  

The outage will allow CISL staff to install new storage hardware components and perform operating system upgrades.

Users will be unable to log in during the outage period. System reservations will be put in place on batch jobs before the outage begins. After the reservations are in place, jobs that are submitted with specified job times that overlap the reservation period will remain on hold until the systems are restored to service. Running jobs that have not finished when the outage begins will be killed and will need to be resubmitted after service is restored. CISL will inform users through the Notifier service when the systems are returned to production.

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.

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

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

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.