Daily Bulletin Archive

Jul. 18, 2017

CISL resumed enforcing the 45-day /glade/scratch purge policy on June 1. The policy was suspended during the recent transition to the new, larger GLADE scratch system. Users’ files that are not accessed (for example: modified, read, or copied) within the 45 days following June 1 will be deleted automatically on July 15.

Also on June 1, the temporary,  read-only /glade/scratch_old file space was removed and will be repurposed. Please see GLADE File Spaces for more information about using the GLADE centralized file service.

Jul. 18, 2017

Registration is now open for this summer’s free ACI-REF Virtual Residency Workshop on “How to Be a More Effective Research Computing Facilitator.” Participants can attend remotely via videoconference or in person at the University of Oklahoma from Sunday, July 30, to Saturday, August 5.

The workshop is intended for those who want to be more effective at helping researchers and educators use research cyberinfrastructure. Participants are expected to give a five-minute presentation on a project that they intend to carry out at their home institution after the workshop ends. They also are asked to participate in a second summer workshop and in Virtual Residency conference calls during the next two academic years. See the application form for more information.

Jul. 17, 2017

NCAR supercomputing, data storage, and archive systems at the NCAR-Wyoming Supercomputing Center (NWSC) will be powered down during a scheduled power outage July 14-18 for mechanical and electrical system testing and certification at the facility in Cheyenne.

The Cheyenne, Yellowstone, Geyser, Caldera, Erebus, GLADE, and HPSS systems will be unavailable from 6 a.m. Friday, July 14, until 8 a.m. Tuesday, July 18. Associated test systems such as Laramie also will be unavailable.

A system reservation will be put in place on batch jobs the afternoon of Thursday, July 13. After the system reservation is in place, jobs submitted with specified job times that overlap the beginning of the reservation period will remain on hold until the system is restored to service. Running jobs that have not finished when the systems are powered down will be killed and will need to be resubmitted when the systems are restored to service.

Users will be informed via the CISL Notifier service when the systems return to production and advised to check on the status of jobs that were on hold.

Jul. 7, 2017

Where and how to start jobs on the Cheyenne and Yellowstone HPC systems and the Geyser and Caldera clusters have been common questions as more and more users begin working on Cheyenne.

The short answer is to log in to Cheyenne to run jobs on Cheyenne, and log in to Yellowstone to submit jobs to run on Yellowstone, Geyser, or Caldera.  The separate logins are necessary because the systems have different job schedulers and operating systems.

We are working to provide a more streamlined solution for Cheyenne users to run data analysis tasks on Geyser and Caldera. Users who need to transfer existing, automated workflows to Cheyenne should contact cislhelp@ucar.edu to discuss options.

See these CISL web pages for detailed documentation:

Jul. 4, 2017

The CISL Help Desk and Consulting office will be open with reduced coverage on Monday, July 3, and then closed for the July 4 holiday. Users who need assistance are encouraged to email cislhelp@ucar.edu.

Calls to 303-497-2400 will be answered on Monday but some users may need to leave voicemail messages. On Tuesday, calls will be forwarded to staff at the NCAR-Wyoming Supercomputing Center.

Jul. 3, 2017

Cheyenne’s economy queue is being enabled for a limited time to encourage greater use of the system. Jobs using the economy queue will be charged a discounted rate of 30% compared to the regular queue.  

Jobs submitted to the regular and economy queues will have the same priority due to the current PBS Pro configuration, so all users are encouraged to use the economy queue while it is available. Its availability will be re-evaluated as Cheyenne’s usage increases.

For more information on Cheyenne’s queues see Job-submission queues and charges.

Jun. 26, 2017

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

Jun. 20, 2017

The Cheyenne cluster will be unavailable from 8 a.m. to 5 p.m. MDT on Tuesday, June 20, to allow CISL staff to perform maintenance on several critical hardware and software components.

A system reservation will be put in place on batch jobs the afternoon of Monday, June 19. Jobs submitted with specified job times that overlap the reservation period then will remain on hold until the system is restored to service. Running jobs that have not finished when maintenance begins will be killed and will need to be resubmitted after the maintenance period.

We apologize for any inconvenience this might cause. Users will be informed via the CISL Notifier service when the systems are returned to production.

Jun. 18, 2017

HPSS Downtime Tuesday, June 20 from 7:00 am - 10:00 am

Cheyenne downtime Tuesday June 20 from 08:00 am - 05:00 pm

No Downtime: Yellowstone, Geyser_Caldera, GLADE

Jun. 16, 2017

The video and slides from CISL’s May 25 class introducing users to the Cheyenne and Yellowstone HPC systems are now available here in the CISL Course Library.

The 90-minute tutorial covers typical workflows in the Cheyenne environment as well as performance and operational differences between the Yellowstone and Cheyenne systems. In addition to the tutorial, CISL recommends that users review the Quick start: Cheyenne and GLADE file spaces documentation before working on Cheyenne.

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