Congratulations to Joseph Cottam, of the Pervasive Technology Labs
at Indiana University, on receiving the first ever Microsoft Award,
from the International Network of Social Network Analysis (INSNA)
for his paper "Extended Assortivity and the Structure in the Open
Source Development Community." The award, given to authors of
outstanding papers that address social relations aspects of software
development, includes a $1,000 cash prize.
Cottam wrote the winning paper with Professor Andrew Lumsdaine,
Director of the Open Systems Lab where Cottam works as a Graduate
Research Assistant. The Cottam and Lumsdaine paper introduces a set
of tools they call "Developmetrics" to investigate community
formation and product development in the open source software
community. Read the paper at
http://cs.indiana.edu/~jcottam/pubs/sunbelt2008.pdf
Indiana University Cyberinfrastructure News
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If you run a large number of jobs through Big Red (or any other
supercomputer), you should include the line
# @notification = never
in your job scripts, unless you're absolutely positive your email
server will accept a large number of emails. Read on to learn why.
Recently, a prominent research group stepped up testing of their
system, running close to 9,000 jobs on Big Red each day. Each job
sent a notification of the result to the group's Gmail account.
Thousands of emails in a short time, forwarded to an external mail
server, led to Big Red being classified as a spammer by SpamHaus.
This meant that anyone at any organization using SpamHaus to create
its blacklists couldn't receive email from Big Red - including Big
Red users at IU!
IU sysadmins can't make sure every server out there will accept
large numbers of emails. And since "Big Red" is not a real email
server - it's an alias that aggregates the notification email from
1024 nodes - we cannot use a standard bulk emailer setup to become
a "legitimate" bulk emailer. If you run a lot of jobs, please help
us to help you - turn off job notifications so you can still get the
mail that you need. -
Big Red has a new SERIAL queue that includes all the nodes from the
NORMAL and LONG queues. This will allow users to submit to the
SERIAL queue single node jobs that are ideal for backfilling without
having to choose which queue will start a batch job sooner. An IEDC
queue has also been added that will allow access to Big Red through
the Indiana Economic Development Corporation in partnership with
Purdue University.
Quarry also has a serial queue to serve the same purpose that
includes all the nodes from the normal and long queues in addition
to 5 dedicated nodes. A normal queue has also been added for jobs
less than 7 days and includes 33 dedicated nodes in addition to the
nodes from the long queue. In order to make these changes possible
the long queue has been reduced to 42 nodes.
Please see the following Knowledge Base documents for more details:
Big Red Usage Policies: http://www.kb.iu.edu/data/avgm.html
Quarry Usage Policies: http://www.kb.iu.edu/data/avpl.html -
The general introduction to Indiana University's Advanced
Cyberinfrastructure is frequently updated, and has been recast in
audio and audio/video format, for those who want to learn about
computing, data storage, visualization and consulting while working
on their aerobics (or who prefer a non-visual modality, for whatever
reason).
These items are available from
http://rtinfo.uits.indiana.edu/documentation/ -
Wednesday, April 2, 12:00-1:00pm - Wells Library E174
Digital Libraries Brown Bag
The Digital Library Program's Project Proposal Process
Stacy Kowalczyk and Michelle Dalmau
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Thursday, April 10, 11:00am-1:00pm - Jordan Hall atrium, IUB
Learn about IU's supercomputers from the experts!
You're invited to stop by and visit with the system administrators
who run IU's supercomputers, Big Red and Quarry -- two of the
most powerful supercomputers in the world.
You're welcome to ask questions, share ideas, or just chat in an
informal setting. This is an opportunity for you to learn how these
centralized research computing resources can help support your work.
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Wednesday, April 16, 12:00-1:00pm - Wells Library E174
Digital Libraries Brown Bag
Sakaibrary Update: Integrating Library Resources with Sakai
Jon Dunn
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Thursday, April 24, 12:30-1:30pm -
RT Round Table
John Samuel, Director of the Center for Statistical and
Mathematical Computing, will discuss Star-P, a software package
designed to extend and parallelize high-level languages, including
* a discussion of Star-P and how it extends Matlab,
* optimizing Matlab code by incorporating Star-P data types, and
* a review of Star-P availability on the IU campuses. -
The maintenance window for all systems is the first Tuesday of each
month, 7am - 7pm EDT.
Outage reports are available online at:
http://racinfo.indiana.edu/hps/research/bigred/outages.shtml
http://racinfo.indiana.edu/hps/research/libra/outages.shtml
http://racinfo.indiana.edu/hps/research/quarry/outages.shtml -
If you have questions pertaining to IU's cyberinfrastructure, or you
are encountering some difficulty, there are several ways to obtain
help.
The IU Knowledge Base (http://kb.iu.edu) is an excellent source of
help on how to do things.
An introduction and overview titled "Indiana University's
CyberInfrastructure: The least you need to know" is available at
http://rtinfo.uits.indiana.edu/documentation/
For more information, go to:
http://rtinfo.uits.indiana.edu/
http://racinfo.indiana.edu/hps/
If you have problems which the KB does not enable you to solve,
questions about system outages, or if you just have a problem and
you don't know who to contact, send email to
researchtechnologies@iu.edu.
