ARSC HPC Users' Newsletter Number 425 2013-09-19

The Arctic Region Supercomputing Center Users' Newsletter provides a platform for discourse relevant to users of high performance computing systems. Topics include: programming, commands, tools, applications, and more.

Please send items, ideas, announcements, etc. to

To subscribe or manage your subscription, visit:


UAF-ARSC-HPC-Users Info Page


Annual Project Renewals

It's that time of year again: Principal investigators for ARSC projects are asked to submit plans for resource utilization for the upcoming year, which begins October 1, 2013.

All PIs should have received email from with detailson how to access the ARSC Extranet to complete the renewal process. These renewals are helpful to plan resource needs for the upcoming year, and they are also helpful with ARSC's reporting to UAF. Thanks to PIs for renewing in a timely manner.


New User Support Request Form

ARSC has a new way to get in touch. This new user support request form helps to gather necessary information to provide a rapid resolution to an inquiry. The form is available here, via the main ARSC homepage at


User Support Request Form | ARSC

You can also visit ARSC in person (Suite 105, West Ridge Research Building on the UAF campus) during business hours, email, or call at 907-450-8602.


Upcoming Supercomputing Symposium at Oklahoma University

OKLAHOMA SUPERCOMPUTING SYMPOSIUM 2013 Wed Oct 2 2013 8:00am-5:00pm (registration and breakfast 7:30am) FREE Reception/poster session Tue Oct 1 2013 5:30-7:00pm University of Oklahoma Norman campus

Are you interested in the FREE Oklahoma Supercomputing Symposium 2013 on Wed Oct 2 on the University of Oklahoma Norman campus?


Oklahoma Supercomputing Symposium 2013

Over the past decade, the Symposium has had over 2500 attendees from 101 academic institutions from 27 US states and territories, 119 private companies, 35 government agencies (federal, state, municipal, foreign) and 17 non-governmental organizations.

The 2012 Symposium had 261 attendees, from 26 academic institutions in 9 states, 22 private companies, 8 government agencies and 4 non-governmental organizations.


More Emacs: Writable Dired

Following up on our two-part series on emacs, Martin Luethi provided this additional information about emacs capabilities:

Writable Dired (WDired) mode.

In WDired mode, you can edit the names of the files in the buffer, the target of the links, and the permission bits of the files.

Type C-c C-c to exit WDired mode, returning to Dired mode, and make your edits "take effect" by modifying the file and directory names, link targets, and/or file permissions on disk. If you delete the filename of a file, it is flagged for deletion in the Dired buffer.

Type C-c ESC to abort your edits and exit WDired mode.

This is so incredibly useful, as search/replace and keyboard macros (another incredibly powerful Emacs capability) can be used to rename bunches of files, where the only alternative would be using a scripting language.


Quick-Tip Q & A

Last time, we asked:

Q: What are some of your favorite experiences on the first day of classes?

Via a reader:

A: I like seeing new students, with all their energies poised to learn a lot, and to make an impact.

Via a reader:

A: At UAF, it's a magical time of year. The flowers are still in full bloom, the streets and buildings are cleaned. If only there was a little less construction, and better parking, things would be perfect.

Here is a new question for next time:

Q: I noticed the ARSC Cray, called "fish," comes with NVIDIA general-purpose graphics processing units (GPUs). What has been the experience of ARSC users, in using GPUs?


[[ Answers, Questions, and Tips Graciously Accepted. Email them to ]]


About ARSC

The Arctic Region Supercomputing Center (ARSC) provides research and high performance computing, large-scale storage, and related services to the students, faculty and staff of the University of Alaska.



Greg Newby, ARSC Director,, 907-450-8663


Publication Schedule

Monthly, on approximately the third Wednesday.


Subscription Information

Subscribing and unsubscribing:


UAF-ARSC-HPC-Users Info Page

Quick tip answers and other correspondence:

Back Issues are Available


ARSC | ARSC HPC Users' Newsletter Index

Back to Top