Capital Area Central Texas UNIX Society
CACTUS Newsletter

Volume 21, Number 1 - January 2005

Next Meeting
supercomputer clusters: Maverick, Lonestar, Longhorn, and Stampede
by David Carver, Texas Advanced Computing Center
Thursday, January 20, 7:00 p.m.


The CACTUS Newsletter is a monthly publication, distributed to our members and other interested people. Visit the CACTUS Newsletter on the web at There you will find archives of back issues, as well as instructions on how to subscribe to the email distribution.

January Meeting Program

The next CACTUS meeting will be held on Thursday, January 20, 2005 at 7:00pm (doors open 6:30pm for pizza and informal discussion), in the auditorium of UT Applied Research Laboratories. (See end of newsletter for directions to the facility).

David Carver, from the Texas Advanced Computing Center, will be talking about their supercomputer clusters: Maverick, Lonestar, Longhorn, and Stampede. Maverick is the newest machine, built by Sun, and designed for high-end scientific visualization.

1) How to install a Linux cluster using Rocks, and 2) Talk briefly about how the Texas Advanced Computation Center is handling backup, storage, and (possibly) other sys-admin issues...

Letter From the President

by Lindsay Haisley

Thanks to everyone

This will be my last "Letter from the President" and I'd like to thank everyone in CACTUS for your support and confidence over my tenure in that office. We've had some ups and downs, but CACTUS carries on. What's happened with CACTUS over the past couple of years?

Thanks also to the other CACTUS officers without whom I'd have taken my election to the office of CACTUS president and sent it to /dev/null.

We'll have our annual election of officers at our January meeting. Please attend! If you don't attend, you may find yourself elected in absentia to a CACTUS office which you may not want. It's happened before ;-)


CACTUS Membership

To renew your membership, please send check or money order payable to CACTUS ($30/yr for regular membership and $100/yr for corporate sponsorship):

PO BOX 9786
Austin, TX 78766-9786

You can also pay in person at the general meetings. Please direct any inquiries or address changes to membership [at] cactus <dot> org. -->

CACTUS System News

by Lindsay Haisley

Hey, Bubba!

Our new Newisys dual Opteron, 64 bit online box is now operational and online, thanks to the efforts of Randy Zagar. Randy installed Red Hat Linux on it, and it's hotter than a June bride in a featherbed - hot as in fast! At Randy's request, at the last meeting we had a "naming contest" for the new system and by decision of the membership, it shall be known as with an IP address of Member accounts were moved to it from, and if you had a login on, you've got the same login on bubba. We have yet to determine a proper way to sync up the user base between the two boxes, but may, in time, move major parts of the CACTUS administrative system, such as the membership database, over to it. Thanks, Randy!!

In case you haven't noticed, the IP address for has changed. OutServ had administrative and technical troubles with their IP provider and switched on fairly short notice to a new T1 connection with Texlink. As a result of this, some folks have had trouble logging in to the box using ssh. If you're getting dire security warnings, or your ssh client refuses to connect, edit your ~/.ssh/known_hosts file and delete any lines referring to and try again. You should have no problems. If you have in your /etc/hosts file, you'll need to change the IP address there. The new IP address is

We're doing OK with drive space on, thanks to the cooperation of CACTUS members who were using somewhat more than their share of the relatively small (by 2005 standards) /home filesystem. We're currently using only 66% of available space, and the Drive Hog competition is down to two contestants. This is a remarkable box, a well built dual Pentium II with redundant SCSI drives mirroring each other using Linux software RAID1. Considering its age, it's pretty speedy. For some things, such as builds from source, it's still faster than our 64 bit Newisys box.

CACTUS Officers

President: Lindsay Haisley (fmouse at
Treasurer: Johnny Long (longjy at
Programs: Randy Zagar (jrzagar at
Membership: Luis Basto (basto at
Publicity: Thomas Bodine (tbodine at
Newsletter: Ray Solanik (solanik at
Scribe: Ron Roberts (ronro at
at Large:
Mark Scarborough (mscar at
M.H. Khan (mhk at

CACTUS Sponsors

Significant Contributing Sponsors

Applied Research Laboratories/University of Texas at Austin
(Gil Kloepfer, Computer Science Division (CSD), 835-3771, gil [at] arlut <dot> utexas <dot> edu)
(Chad Kissinger, president, 322-9200, info [at] onr <dot> com)
Broadband Internet access, web design and colocation
CoreNAP, L.P.
(Kenneth Smith, (512) 685-0010), kenneth [at] corenap <dot> com)
Provides server colocation and high-speed Internet access to businesses in the Austin & central Texas area, Inc.
(David Maynard,, dpm [at] outserv <dot> net)
e-Business Operations Service Provider.


Dresser - Wayne
(Steve Cox, (512) 338-8444), steve <dot> cox [at] dresser <dot> com)
Provides instrumentation and services to the oil and energy
IBM Corporation
(George Kraft IV, (512)838-2688, gk4 [at] austin <dot> ibm <dot> com)
Journyx, Inc.
(John Madollozzo, (512)833-3274, john [at] journyx <dot> com)
Web-based products to track time, expenses, and attendance, for project management and billing.
Prog Corp.
(David Mallis, 451-7191, prog [at] cactus <dot> org)
Publisher of instructional materials for classroom and independent study.
Rocksteady Networks Incorporated Rocksteady Networks
Eric White, 512-427-1319 ewhite [at] rocksteady <dot> com
Ray Solanik
Ray Solanik, Technical Consultant solanik [at] cactus <dot> org
Starflight Corp.,
Jon Roland, jon <dot> roland [at] the-spa
Computer consulting, management solutions, documentation, and technical writing.
VoIPing, LLC
(Lenny Tropiano, 512-698-VOIP (8647) or Brian Sinclair 512-698-8031, info [at] voiping <dot> com)
IT Consulting and Services, converged networks, Unix, and Voice over IP.

Veraci Inc.
Michael Shrivathsan michael [at] veraci <dot> com

Friends of CACTUS

Applied Formal Methods, Inc.
(Susan Gerhart, 794-9732, gerhart [at] cactus <dot> org)
Auspex Systems
(Paul Levine, plevine [at] auspex <dot> com
Fastest reliable network fileservers.
Austin Code Works
(Scott Guthery, 258-0785, info [at] acw <dot> com)
((800) 977-3475), registrar [at] bestregistrar <dot> com)
A top-level domain name registrar, CORE member.
(Chip Rosenthal)
(Maurine Mecer, 502-0190 [FAX 502-0287])
Professional recruiting.
Compaq Computer Corporation (now HP)
(Ron Boerger, 432-8000)
Provider of scalable, high availbility systems.
EDP Contract Services
(Mark Grabenhorst, 346-1040) Professional recruiting.
Hewlett Packard
(Bill Sumrall, 338-7221)
Hounix (maybe bad link )
(Marilyn Harper)
Houston's Unix Users Group.
Network Appliance Corporation
(Frank Mozina, fmozina [at] netapp <dot> com)
O'Keefe Search (
(John O'Keefe, john [at] okeefesearch <dot> com, 512-658-9224 or 888-446-2137)
Professional recuiting.
Sailaway System Design
(Chris J Johnson, 447-5243)
(Kathy O'Brien, obrien [at] asc <dot> slb <dot> com)
Technical services and products in over 100 countries.
Silicon Graphics
(Don Williams, 346-9342)
Solid Systems
(Pete Farrell, 442-2222)
Sterling Infomation Group
(Darrell Hanshaw, 344-1005)
Sun Microsystems
(Rick Taylor)
Supplier of Unix client-server computing solutions.
Texas Internet Consulting
(Smoot Carl-Mitchell, 451-6176, smoot [at] tic <dot> com)
TCP/IP networking, Unix, and open systems standards.
A Sun Authorized Training Center and a Hardware Reseller.
Unison Software
(Shelley St. John, 478-0611)
Supplier of networked systems management solutions.
UT Computer Science Department
(Patti Spencer)
UT Computation Center
(Mike Cerda, 471-3241, cerda [at] uts <dot> cc <dot> utexas <dot> edu)

Directions to Meeting Location

CACTUS meets on the third Thursday of each month at the Applied Research Labs (ARL) in the JJ Pickle Research Campus (JJ PRC). We'll meet in the main auditorium located directly behind the guard's desk and main lobby.

Please do not show up earlier than 6:20 pm on the specified day. Enter through the main entrance at 10000 Burnet Road for ARL:UT. Tell the guard that you are here for the CACTUS meeting. You will be required to sign a log book, but not required to wear a badge. The guards will direct you to the auditorium entrance. Limited parking in the front of the building is available, but more extensive parking is available in the large parking lot just north of the ARL building. After 6:30 pm, all entrances to JJ PRC, except for the Burnet Road entrance, are closed and locked. You can still enter the parking lot in front of the ARL building. No parking tags are necessary after 6:00 pm. See map for further details.

Online maps are available at:

As always, please leave the facility as you saw it when you arrived.

Valid HTML 4.01!