Monthly Archive:: July 2008

Scott Finley, a researcher at the University of Wisconsin-Madison has ported the Linux files system Ext2 to Microsoft's new research operating system Singularity. One of the most striking observations was the author's comments on Singularity's robustness. "Perhaps the best testament to Singularity's dependability was the extremely good system stability during the development of ext2... If the ext2 process terminated as the result of a failure, it only resulted in open channels closing. Other processes could (and did) recover gracefully." Finley's report details all his findings quite extensively.

Peter Wayner takes a deep look at four cloud computing services: Amazon EC2, Google App Engine, GoGrid, and AppNexus, each of which simplifies your workload but forces you into a 'ball-and-chain-computing' routine you may not like. Although the services do let you pull CPU cycles from thin air when you need it, they can't solve the deepest problems that make it hard for applications to scale gracefully, Wayner writes. Overall, Wayner finds the 'clouds' rife with potential but 'far from clear winners over traditional shared Web hosting.'

Walter Bright talks about D and his desire to improve on systems programming languages. Many successful concepts from other languages like JavaScript, PERL, Ruby, Lisp, Ada, Erlang, Python, etc., have had a significant influence on D, he says. He adds: "D 1.0 was pretty straightforward stuff, being features that were adapted from well-trod experience in other languages. D 2.0 has ventured into unexplored territory that doesn't have a track record in other languages. Since these capabilities are unproven, they generate some healthy skepticism. Only time will tell."

Software engineer Satoshi Nakajima, the lead architect of Microsoft's Windows 95, picked up a Mac for the first time two years ago.He was so impressed, he says he'll never again touch a PC again.Satoshi loves Apple products so much, he started a company in April, Big Canvas, to develop for Apple's iPhone platform full-time."We have chosen iPhone as the platform to release our first product (for) several reasons," explains his company's website. "We love Apple products... You need love to be creative."

Linus Torvalds is remarkable, not only for being the technical genius who wrote Linux, but for then being able to inspire and lead an enormous team of people to devote their free time to work on the operating system and bring it to maturity. We sent Richard Morris off to interview Linus, and find out more.

We covered earlier about Apple suing Psystar the creator of Open Computer. Now we have more details of the complaint . Apple's complaint is now available online (registration required).

The convoluted case of SCO v. Novell dealt a heady blow to the SCO Group Wednesday, with United States District Judge Dale Kimball ordering the company to pay $2.5 million to Novell for improperly claiming, and collecting royalties for, the Unix operating system.

Lately it's hard to avoid the buzz about these small laptops (sorry, I don't participate in the hype of calling them netbooks or whatever) - the small, cheap laptop systems that were popularized by the Asus Eee PC. Just like Xandros with the Eee, Mandriva is providing the operating system for the upcoming GDium system, produced by Emtec. The first GDium will be a netbook with a 10", 1024x600 resolution display and a battery life of four hours, weighing in at 1.1kg. The device is powered by the (for us) exotic Chinese Loongson processor, which is based on a MIPS design. Mandriva is working together closely with the GDium team to provide an optimal software experience. Available from September 2008, with a price expected to be round and about EUR 400.

At the heart of every networking device is an operating system that enables traffic flow. In the case of networking vendor Juniper, that operating system for the past ten years has been JUNOS, a network operating system with its roots in the open source FreeBSD operating system.Juniper has updated JUNOS every 90 days since 1998.

Linux security may seem daunting, but there are a host of best practices to simplify the maze. Recently, Steve Grubb of Red Hat Inc. outlined some important security principles, including minimizing admin access, the increasing sophistication of SELinux and the importance of auditing systems.

Neil McAllister deliberates the question of public disclosure of open source vulnerabilities, contrasting Ounce Labs' announcement of security vulnerabilities in the Spring Framework for Java with Linus Torvalds recent missive on the Linux kernel development mailing list. Sure, vulnerability bulletins raise awareness of real danger, but they also distract from other productive activities. To find the right balance between keeping users informed and maintaining an orderly and holistic development process, McAllister suggests we take a biologist's view of how species deal with risk perception.

A window manager in GNU/Linux is a piece of software which controls placement and appearance of windows in a graphical user interface in X. All the WMs listed here can easily be obtained through your distribution's respective repositories.

Today was one of those days when I wished Java would support multiple return values. I had to develop a rather CPU-intensive algorithm which would compute a solution for a knotty constraint problem. Having a solution alone is sometimes not enough and you also need to add some parameters which measure the quality of the computed outcome. Most of these accompanying parameters can or have to be computed within the algorithm itself, but Java allows you to return only one value either an object or a primitive type. People working with Lisp, MATLAB or Perl, just to mention a few, don't have a problem like this at all. Functions supporting multiple return values is already implemented at the language level and frameworks make heavy use of this. But as a Java programmer you are pretty much stuck here and need to consider some other means to come out of this situation. In the following I would like to give some hints on that topic. Hopefully they are of help for anyone having the same problem every now and then.

Microsoft's Windows beat operating system rivals Mac OS X and Ubuntu in a three-month test of update server uptime, according to Pingdom, a Swedish uptime monitoring company.