Daily Bulletin Archive

Nov. 1, 2011

CISL now offers the HPSS Tape Archiver (HTAR) utility, which lets users package files into a single archive file for efficient transfer to HPSS. With HTAR, there is no need to create and store archive files locally.

Documentation for this new utility is available here:


In addition to packaging files and transferring archive files to HPSS, HTAR creates and saves an index file in HPSS. It also allows retrieval of specified files from HPSS without copying the entire archive file to a local file system.

Oct. 20, 2011

Bulletin Update

Please note that the content of /blhome will become read-only for users after 1 p.m. on Tuesday, October 11. The content will remain that way for a month to enable users to copy the necessary files. After this period, /blhome will no longer be available.

Most users' home directories in Bluefire are now located under /glade/home. Directories that still appear under /blhome will be changed to /glade/home during the scheduled Bluefire outage on 10/11. If your home directory is under /blhome at present, you should already have received an email from us notifying you of this change.

The change of home directory means that the same dot files (.login, .profile, and so on) will be used on all CISL machines. If you wish to have settings that apply only to certain machines, you must set up your dot files to handle this. More instruction can be found at: http://www2.cisl.ucar.edu/docs/glade-user-guide/dotfiles .

If you have any questions, please contact us through cislhelp@ucar.edu or 303-497-2400.

Oct. 20, 2011

Recently CISL warned us about problems in older versions of NetCDF and attempted an update of the NetCDF libraries on bluefire. Because this change caused a disruption with currently running cases, and because the problem was rare and as far as we were aware we had never seen the issue, CSEG asked that the change be backed out and the older version be restored on bluefire. We have now found a case in which the old NetCDF file is causing a corruption of CESM output files and are thus recommending all CESM users make the following changes and recompile.

In file: scripts/ccsm_utils/Machines/Macros.bluefire replace the (-) lines with the (+) lines:

-NETCDF_PATH := /usr/local


-LDFLAGS := -q64 -bdatapsize:64K -bstackpsize:64K -btextpsize:32K

+LDFLAGS := -q64 -bdatapsize:64K -bstackpsize:64K -btextpsize:32K -lnetcdff

In file: scripts/ccsm_utils/Machines/env_machopts.bluefire

append the following two lines:

source /contrib/Modules/3.2.6/init/csh

module load netcdf/4.1.3_seq

This change should apply for all ccsm4 and newer versions. If you are using an older version please contact us. We apologize for the inconvenience, please contact Jim Edwards jedwards@ucar.edu if you have questions or concerns.

Oct. 20, 2011

Users are encouraged to use the /glade/scratch filesystem cross-mounted on Bluefire, Lynx and DAV clusters (mirage/storm). Each user should be able to store files under the directory:


The files stored in /glade/scratch will remain there for 30 days from the time of last access. There is no quota limitation, but the total space available in this filesystem is 204TB. Therefore, if you delete the files you do not need it will help your fellow users to utilize the space freed by you. For more details of usage and policy of this filesystem you may look at:


Apart from the convenience of not having any quota limitation, there are a number of other reasons to start using the /glade/scratch filesystem now. We mention a few of the important ones:

(1) The NWSC supercomputer, successor of our current computing systems, is scheduled to be commissioned around the middle of next year. There will not be any /ptmp filesystem on the NWSC system but we plan to deploy scratch filesystems similar to the current one though much bigger in size. Therefore, this is an opportunity to modify your scripts and workflows to make use of this scratch filesystem to make the transition to the NWSC system smoother.

(2) Due to some incompatibility in software configuration we will have to decommission the bluefire /ptmp filesystem before we bring up the NWSC system. During this time bluefire, lynx and DAV cluster will remain operational but bluefire's /ptmp will not be available.

(3) We want to monitor the behavior of this filesystem under high usage and also want to receive your feedback about usage of this filesystem. This information would allow us to fine tune our configurations and policies.

Please feel free to contact CISL Helpdesk at 303-497-2400 for any issues or concerns.

Oct. 17, 2011

On Saturday 15 October, 2011, the NCAR/CISL Data Center will be shut down to facilitate preventative maintenance on select infrastructure support systems. This is the normal Fall season down time for this purpose. Please note this activity is a complete shutdown with some minor exceptions listed below, scheduled for 6 a.m. to 6 p.m.

The supercomputer systems will begin their shut down at 12:01 a.m. Mountain Time while some computing systems, depending on their function, will begin their shutdown Friday afternoon/evening. Please make arrangements accordingly.

Once all maintenance work is completed, the systems will be brought back up in their order of dependency. CISL and Facilities Management and Sustainability maintain the twelve hour window to accomplish all tasks at hand.

Basic networking for phone service will be available for the Mesa Lab during most of this maintenance window, however, intermittent outages may occur.

For more information, contact CISL Help Desk at 303-497-2400

Oct. 17, 2011

Today, you will notice some changes to CISL's Daily Bulletin. We've modernized the underlying software, which allows us to provide you with important CISL information more conveniently and efficiently.

You'll still see a daily email each morning, but we can quickly send out urgent announcements when the need arises. In addition, on the Daily B's new web site at http://dailyb.cisl.ucar.edu (or via a convenient RSS feed), you can see items as soon as they are posted.  You can see events on the calendar as well as find past announcements in the archive.

We hope you find the new Daily Bulletin useful. If you have any comments or feedback, please send them to  dailyb@ucar.edu.

As always, you can change your Daily B preferences, subscribe, or unsubscribe online at http://mailman.ucar.edu/mailman/listinfo/dailyb-doc.