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07.15.04
How
to migrate your company to Linux clusters
Anyone following the high performance computing industry has probably
noticed the growing popularity of Linux cluster systems. The 23rd
Top 500 list, a ranking of the world's most powerful supercomputers,
reported that clusters make up more than 50 percent of the list. The
appeal is easy to understand; Linux clusters are a fraction of the
cost of traditional supercomputers while providing blazingly fast
performance numbers. Many organizations from national labs to Hollywood
special effects shops have reported performance increases that their
previous systems couldn't touch. With such widespread appeal and tangible
benefits, the migration to cluster systems seems inevitable for many
organizations.
Benefits of clustering
Perhaps the most common reason organizations investigate clusters
is the price/performance ratio. Most users of Linux clusters benchmark
a price/performance improvement that is literally 10 times better
than other traditional alternatives. By leveraging the power of the
Linux operating system while harnessing the power of low-cost commercial
off-the-shelf (COTS) components, Linux clusters deliver a hardware/software
package that is powerful, scalable, flexible, and very reliable.
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Know
your enemy
The only way to avoid hackers is to pull up your enterprise drawbridge
and pull the plug from the Internet. Seventy-eight per cent of the
respondents to the 2003 Computer Security Institute/FBI Computer Crime
and Security Survey identified the Internet as a primary point of
attack.
And the attacks are expensive. The survey's 251 respondents estimated
that they collectively lost more than $70 million (US) to information
theft in 2003. Viruses accounted for $27.4 million. Even "script kiddies,"
teenaged digital vandals who typically cause more trouble than expense,
cost them $65.6 million in denial of service attacks.
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How
To Kill a Windows Network
Wednesday afternoon I experimented for the first time with binding
Panther Server to our Windows Active Directory. In the XServe's Directory
Access app, I selected Active Directory, entered the domain and forest,
computer ID, and it all just worked - I could see all of the users
and groups on the domain from the Mac's Workgroup Manager. I was so
impressed. Decided to wait for the next day to do more integration
testing.
Thursday morning I got an urgent call from the sysadmin that many
of the Windows machines on our network were unable to log on because
DC "mulder" was not responding, and that according to the System Events
logs, the AD services seemed to have crashed exactly when I bound
the Mac server to the domain. I didn't know what to say. I hadn't
intended for the Xserve to become a directory server (and had explicitly
not set up that capability), just a client. How could this have happened?
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Monitoring
from the Linux Command Line
System administration can be a time consuming and difficult job, and
many web developers specifically assign these duties to a staff or
contract sysadmin to insure servers are running optimally.
However, not every web business is economically ready to hire adminstrative
staff and handle these tasks on their own. Second, not every web designer
or developer has a sysadmin background and often learn on the fly.
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IBM
unveils new Power5 Unix, Linux servers
IBM Tuesday announced a new line of Power5 Unix and Linux servers
that will give users a mainframelike ability to virtualise their systems
at the processor level — a capability some users are hoping will reduce
their software and hardware costs.
The processor virtualisation capability is one of the key advances
in the 64-bit Power5 chip running on the vendor's eServer P5 line,
IBM officials say. Each processor is also dual-core, but unlike the
Power4 chip, the Power5 also has simultaneous multithreading capability,
which means it can run two instruction streams in real time, or up
to four threads in parallel.
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Ballmer
Vs. Linux, IBM and Novell
Microsoft's CEO Steve Ballmer came out swinging -- verbally and even
physically at times, at the Worldwide Partner Conference where he
mocked open source technology, Linux in particular, while touting
opportunities on the company's own platforms.
During a keynote address here Tuesday, Ballmer also identified Novell
customers as prime targets for Microsoft's partners to pick off as
potential new customers.
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| From
the Forum: |
| IE
doesn't know how to handle HTML |
| I've ran into something weird, a few times when
I updated my site and I start IE to check it up pops a small
filetransfer-window asking me: .HTML file do you want to open
or download it? If I answer open I get the question: with what
program? ...
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