Daily Bulletin Archive

Apr. 24, 2018

Cheyenne system administrators will perform preventative maintenance procedures on the PBS job scheduler today, Tuesday, April 24, beginning at noon MDT. The maintenance is expected to take approximately one hour to complete.

Most PBS commands will not work during the maintenance outage, including qstat and qsub, and new job submissions will not be possible.

No batch jobs are expected to be lost as a result of the maintenance. Jobs that are executing when the maintenance begins will continue to run without interruption. Jobs that are queued for execution or in a hold state will remain in those states until PBS is returned to service. Access to Cheyenne’s login nodes will not be interrupted.

Users will be notified when PBS is returned to service.

Apr. 23, 2018

Cheyenne system administrators will perform preventative maintenance procedures on the PBS job scheduler tomorrow, Tuesday, April 24, beginning at noon MDT. The maintenance is expected to take approximately one hour to complete.

Most PBS commands will not work during the maintenance outage, including qstat and qsub, and new job submissions will not be possible.

No batch jobs are expected to be lost as a result of the maintenance. Jobs that are executing when the maintenance begins will continue to run without interruption. Jobs that are queued for execution or in a hold state will remain in those states until PBS is returned to service. Access to Cheyenne’s login nodes will not be interrupted.

Users will be notified when PBS is returned to service.

Apr. 17, 2018

HPSS will be down on Tuesday, April 17 from 7:00 am to 3:00 pm for system testing.

 No downtime: Cheyenne, GLADE, Geyser_Caldera

Apr. 17, 2018

CISL will reactivate the purge policy for the GLADE scratch file space today, April 17. The purge policy was turned off during last month’s problems with the /glade/p file space to provide users an alternative storage option.

The purge policy data-retention limit is currently set at 60 days and uses two time and date factors: a file’s creation date and its last access date.

Files that were created more than 60 days ago and have not been accessed for more than 60 days will be deleted. CISL monitors scratch space usage carefully and reserves the right to decrease the 60-day limit as usage increases. Users will be informed of any change to the purge policy.

 

GLADE scratch space is for temporary, short-term use and not intended for long-term storage needs.

Apr. 16, 2018

The location of the Research Data Archive (RDA) on NCAR’s GLADE file system has changed.  NCAR users are advised to access RDA data from the new production location at: /glade2/collections/rda/data.

Note that the previous location of RDA data, /glade/p/rda/data, has been moved to /glade/p/rda/data_old but is no longer being maintained and will be purged later this year.

Please contact rdahelp@ucar.edu with any questions or concerns.

Apr. 13, 2018

A semi-annual Mesa Lab building maintenance power-down scheduled for Saturday, April 14, should have little impact on university users of CISL’s high-end resources. Some Boulder-based UCAR/NCAR staff will be unable to log in to the Cheyenne system or other services with their authentication tokens, but sessions that start before the power-down will not be affected.

The power-down should otherwise not affect the Cheyenne, Geyser, and Caldera clusters, the GLADE system, or HPSS, which will remain in service at the NCAR-Wyoming Supercomputing Center (NWSC) in Cheyenne. The maintenance work is scheduled to begin at 6 a.m. and conclude by 6 p.m.

Some HPC support services and the HPSS disaster recovery resources that are housed at the Mesa Lab will be unavailable during the power-down. The affected services include the license servers  for Mathematica and the PGI compilers, the CISL website, the ExtraView help desk ticketing system, and SAM accounting system. The license server supporting MATLAB users on Cheyenne will not be affected.

Users who have urgent help requests during this time should call 303-497-2400 or 307-996-4300 to reach the NWSC operations center.

Apr. 11, 2018

Acknowledging the support of NCAR and CISL computing when you publish research results helps ensure continued support from the National Science Foundation and other sources of funding for future high-performance computing (HPC) systems. It is also a requirement of receiving an allocation, as noted in your award letter.

The reporting requirements, how to cite your use of various systems, and recommended wording of acknowledgments can be found on this CISL web page. The content of citations and acknowledgments varies depending on the type of allocation that was awarded.

Apr. 11, 2018

Cheyenne system administrators will perform important system tests on Cheyenne’s login node, cheyenne1, today beginning at noon MDT.  The tests are expected to take approximately one hour to complete.

cheyenne1 will be unavailable throughout the testing period and steps have been taken to restrict access to cheyenne1 prior to the start of today’s tests to minimize impact to users.  Active user login sessions and all running processes on cheyenne1 will be killed when the testing procedures begin. Access to Cheyenne’s other five login nodes will not be interrupted and no impact to other Cheyenne components is expected.

Apr. 9, 2018

No downtime: Cheyenne, GLADE, Geyser_Caldera and HPSS

Apr. 3, 2018

HPSS downtime: Tuesday, Apr. 3rd 8:00 a.m. - 2:00 p.m. for library consolidation work

No downtime: Cheyenne, GLADE, Geyser_Caldera

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