Slashdot Mirror
Domain: skeptictank.net
Stories and comments across the archive that link to skeptictank.net.
Stories · 29
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Scripts and Scaling In Online Games
CowboyRobot writes "Jim Waldo of Sun Microsystems has written an article titled Scaling In Games & Virtual Worlds, saying that they 'should be perfect vehicles to show the performance gains possible with multicore chips and groups of cooperating servers. Games and virtual worlds are embarrassingly parallel, in that most of what goes on in them is independent of the other things that are happening. Of the hundreds of thousands of players who are active in World of Warcraft at any one time, only a very small number will be interacting with any particular player.' A group of researchers at Cornell wrote a related piece about improving game development and performance through better scripting." -
A Developers Security Bugs Primer
CowboyRobot writes "ACM Queue's current issue on Open Source Security includes a short article by Eric Allman of Sendmail on how to handle security bugs in your code. "Patch with full disclosure. Particularly popular in the open source world (where releasing a patch is tantamount to full disclosure anyway), this involves opening the kimono and exposing everything, including a detailed description of the problem and how the exploit works... Generally speaking, it is easier to find bugs in open source code, and hence the pressure to release quickly may be higher."" -
Being Enron's SysAdmin
CowboyRobot writes "FreeBSD's Kirk McKusick has a long interview with Enron's former SysAdmin, Jarod Jenson, where he describes the nuts and bolts of working in and managing such a large-scale operation." From the article: "EnronOnline was a Web-based trading application. We had several hundred, even thousands of commodities that we would price in realtime, the same way that equities are priced. We were trying to push realtime pricing information out to clients who could do instantaneous transactions on them. People who are familiar with financial markets--the commodity markets--would recognize EnronOnline as sort of the same thing. We had a lot of the same issues that the markets had trying to push out realtime data--not only within our local network but also to the customers--as quickly as we could globally, and trying to make sure that what every trader saw on the screen matched what every company in the world had on theirs." -
Beyond Relational Databases
CowboyRobot writes "Relational databases were developed in the 1970s as a way of improving the efficiency of complex systems. But modern warehousing of data results in terabytes of information that needs to be organized, and the growing prevalence of mobile devices points to the increasing need for intelligent caching on the local hardware. According to the ACM, the future of database architecture must include more modularity and configuration. Although no concrete solutions are included, the article is a good overview of the problems with modern data systems." -
How Heraclitus would Design a Programming Language
CowboyRobot writes "Developer of Smalltalk Alan Kay has an interview on ACM Queue where he describes the history of computing and his approach to designing languages. Kay has an impressive resume (PARC, ARPAnet, Atari, Apple, Alan Turing Award winner) and has an endless supply of memorable quotes: 'Perl is another example of filling a tiny, short-term need, and then being a real problem in the longer term,' 'Once you have something that grows faster than education grows, you're always going to get a pop culture,' 'most undergraduate degrees in computer science these days are basically Java vocational training,' 'All creativity is an extended form of a joke,' and 'nobody really knows how to design a good language.'" -
Database Error Detection and Recovery
CowboyRobot writes "ACM Queue has an interview by Steve Bourne with Bruce Lindsay, responsible for a lot of the SQL and RDBMS we use today, in which they discuss error detection and recovery. My favorite part other than the photos is the definition of Heisenbugs - those problems that disappear only when you explicitly look for them." -
Writing Code for Spacecraft
CowboyRobot writes "In an article subtitled, "And you think *your* operating system needs to be reliable." Queue has an interview with the developer of the OS that runs on the Mars Rovers. Mike Deliman, chief engineer of operating systems at Wind River Systems, has quotes like, 'Writing the code for spacecraft is no harder than for any other realtime life- or mission-critical application. The thing that is hard is debugging a problem from another planet.' and, 'The operating system and kernel fit in less than 2 megabytes; the rest of the code, plus data space, eventually exceeded 30 megabytes.'" -
On Moving Toward Software Rentals
CowboyRobot writes "ACM Queue has an article about the emergence of a service-oriented model of software delivery, supported by the W3C, IBM, HP, and Microsoft. They already have their acronyms down: WSDL (Web Services Description Language), UDDI (Universal Description, Discovery, and Integration), and WSFL (Web Services Flow Language). The article primarily covers the three phases of negotiating, ending with actual service delivery." -
Gosling on Computing
CowboyRobot writes "ACM Queue has Eric Allman (creator of Sendmail) interviewing James Gosling (creator of Java) and the conversation covers many aspects of computing today, including the state of security, comparisons of languages and OSs, and the future of virtual machines. 'At the lowest level, you have to know that the boundaries around the piece of software are completely known and contained. So, for example, in Java, you can't go outside the bounds of an array. Ever. Period. Turning off array subscripting is not an option.'" -
Biomorphic Software
CowboyRobot writes "From the molecular structure of spiders' silk to the efficient use of energy by insects and fish, we can learn many things from Nature and apply them to our engineering tasks. One thing that nature is particularly good at is the development of dynamic, self-organizing systems. Ken Lodding is a software engineer at NASA and is currently developing 'swarm algorithms for groups of wind-driven, remote exploratory vehicles'. He has a six-page article at Queue on 'biologically inspired computing', how to develop 'algorithmic design concepts distilled from biological systems, or processes.'" -
Blame Bad Security on Sloppy Programming
CowboyRobot writes "ACM Queue has an article that blames security flaws on poor programming, rather than any inherent problems with particular languages. From the article: 'Remember Ada? ... we tried getting everyone to switch to a 'sandboxed' environment with Java in the late 1990s... Java worked so well, Microsoft responded with ActiveX, which bypasses security entirely by making it easy to blame the user for authorizing bad code to execute.'" -
Lessons Learned From Blaster
CowboyRobot writes "It's been nearly a year since Blaster struck, causing hundreds of millions of dollars in fixes and lost revenue. Jim Morrison of Symantec goes step-by-step in looking at how the Blaster worm got out of control so quickly, and what lessons can be learned from that event, by studying how one utility company dealt with it." The story is written as a fun, technothriller narrative; here's an snippet: "The laptops, usually out in the field, were always a hit-and-miss proposition to find on the network and deliver a patch or to have the user take the machine to a field office. That meant that on the 16th they could see a flood of traffic launched against Microsoft. The second phase of Blaster, launching a DoS (denial of service) attack against windowsupdate.com, was imminent." -
Evaluating Open Source
CowboyRobot writes "Jordan Hubbard cofounded FreeBSD and now oversees the Darwin implementation of BSD for Apple. He describes open source as 'finally being openly acknowledged as a commercial engineering force-multiplier and important option for avoiding significant software development costs.' And thus, companies need to know how to evaluate open source engineering as an option for them. In a new article titled Open Source to the Core, Hubbard goes through a typical open source adoption process." -
Cinematic Game Graphics
CowboyRobot writes "LucasArts engineer Nick Porcino has an article detailing what to expect from graphics in the next generation of game systems including the "influence of cinematic realtime rendering, the promise of advanced lighting techniques and high-dynamic range images, the uses of the rendering pipeline, and the future of multiprocessor-based rendering and advanced geometry." These will allow run-time rendering of high quality backgrounds and characters, ultimately resulting in games that are closer to full-blown Pixar animations, allowing better narratives and more immersive user experiences." -
PacManhattan Relocates Classic Game To New York Streets
Matt Slaybaugh writes "Some classmates of mine have developed a 'large-scale urban game that utilizes the New York City grid to recreate the 1980's video game sensation Pac-Man.' One player dresses up as Pac-Man and tries to cover the full Greenwich Village grid, while 4 others dressed as Blinky, Pinky, Inky, and Clyde try to catch him. Everyone reports their positions to their respective generals, who monitor progress on a central control board. I can't wait for the real-world implementation of Donkey Kong." -
How to Build a Search Engine
CowboyRobot writes "Three years ago, former Infoseek developer Matt Wells decided to go solo and build his own search engine, Gigablast. In this article, Infoseek founder Steve Kirsch interviews his former employee about the process and challenges of creating a modern, scalable search engine. From the article: 'Search is a fiercely competitive arena, even though there are really only five Web search companies today: Google, Yahoo (Altavista/AlltheWeb/Inktomi), Looksmart (Wisenut), AskJeeves (Teoma), and Gigablast. It's a tight little community, and a lot of the people know and watch each other. Microsoft is also coming to the party, and everyone's a little bit nervous to see what it's bringing.'" -
UML Fever
CowboyRobot writes "Queue has a couple of articles about UML: Death by UML Fever by Boeing software architect Alex Bell describes the problems that can result from over-reliance on modeling tools, with lighthearted lessons for the software development process in general and numerous illuminating quotations, such as: "Good judgment comes from experience. Experience comes from bad judgment. - Jim Horning." Then, one of the developers of UML, Grady Booch of IBM, follows with The Fever is Real, in which he explains the motivations for creating the language, how it's used today, and where he expects it to go soon." -
The State of OpenGL
CowboyRobot writes "No longer vapor, but a true 3D-embedded engine, OpenGL is on the move. Pixar and others would love to be able to render their movies in realtime, and that desire has prompted the intended release of OpenGL 2.0, due in a few months. Khronos is now in charge of further extending OpenGL to cellphones and handheld gaming devices." -
Localizing High-End Games for Low-End Machines
CowboyRobot writes "Intel engineer Dean Macri has an article at ACM Queue listing the challenges in designing PC games that will run on very different processors. PCs vary widely in their performance, and if game developers design only for the high-end, they limit their market. The article lists specific tips on how to guarantee that even old slow machine can run new games, such as 'the number of triangles used to create the trunks and branches could vary based on the available processor and graphics hardware performance', 'replace the clothing on characters in a game with actual geometry that separates the clothes from the underlying character model', and for simulating ocean waves, having low-end systems rely on basic sine waves while higher-end machines use more sophisticated methods." -
The State of AI In Games
CowboyRobot writes "Carnegie Mellon researcher Alexander Nareyek has an article at ACM Queue describing how the role of graphics as the leading technology in gaming is being replaced by advancements in artificial intelligence. The author targets some game AI: 'Early milestone demonstrations for the publisher, press presentations, and other hype-generating events do not promote inclusion of a globally/consistently good AI, but instead focus on one or two 'absolutely unexpected but genius outcomes of revolutionary new and complex AI procedures' (did you spot the ironic tone?) that provide the necessary 'wows'.' He concludes by suggesting: 'we need to see more effort to make AI functionality available for the designers/artists.'" -
Building Scaleable Middleware for MMORPGs
CowboyRobot writes "ACM Queue has an article exploring the challenges of developing a reliable platform for an MMORPG, specifically looking at Wish by Mutable Realms. From the article: 'A common scalability problem for distributed multiplayer games relates to managing distributed sets of objects... A player may not be a member of more than one guild, or a guild may have at most one level-5 mage (magician). In computing terms, implementing such behavior boils down to performing membership tests on sets of distributed objects.'" -
Anatomy of Game Development
CowboyRobot writes "ACM Queue has an article titled Game Development: Harder Than You Think that looks at the complexities of creating a modern game, in comparison with the relative simplicity of doing so ten years ago. My understanding of the industry is that they have too many designers and not enough programmers. From the article: 'Now the primary technical challenge is simply getting the code to work to produce an end result that bears some semblance to the desired functionality... There's such a wide variety of algorithms to know about, so much experience required to implement them in a useful way, and so much work overall that just needs to be done, that we have a perpetual shortage of qualified people in the industry.'" -
Will Harvey On Virtual Worlds, Technology Curves
CowboyRobot writes "Slashdot's former editor Chris DiBona has an interview with videogame creator Will Harvey over at ACMQueue. Harvey has had a hand in lots of stuff you've used, from Zany Golf to Adobe AfterEffects, and now runs There, a kind of online 3D 'virtual world' game. Their conversation covers games in general, as well as specifics of the challenges that There is facing. From the article: 'You have to project the curves: the rendering curve; the CPU speed curve; the money spent on the Internet on online games curve; the number of people who play online games curve. I think we guessed right on almost everything, but we underestimated Moore's Law and we overestimated the low-end graphics capability'." -
The Self-Tuning Guitar
CowboyRobot writes "With the TransPerformance Performer you push a button to activate a mechanical re-tensioning of the strings to any of a few hundred tunings, 'accurate to within 2 cents over the entire tuning range', in a couple of seconds. They can even refit your existing guitar. There's a long audio interview with Jimmy Page on the site. It's funny to hear him speak." -
In (Sort Of) Defense of Spammers
CowboyRobot writes "Eric Allman of Sendmail has a rant in which he looks at the economic forces that have led to the spam problem: 'The sad point of all of this is that I'm going to (sort of) defend the spammers and point out that they are responding to basic economic forces that we all respond to at one level or another. As long as spammers can take in more money than it costs them, they will continue to spam. This is "rational" behavior in the economic sense.'" Otherwise known as the Willie Sutton principle. -
East vs. West: Culture and Distributed Development
CowboyRobot writes "ACM's Queue has an article entitled, Culture Surprises in Remote Software Development Teams that reviews differences in cultures and explores the impact they have on distributed software development teams. From the article: "In Western societies, decisions are made on the basis of input from those involved. In cultures with greater hierarchies, group members assume an authority will decide and they are only to enact the decision." Some stereotypes and some common sense, but I recognized myself in the descriptions of the 'typical American'." -
Sentient Data Access
CowboyRobot writes "From Queue comes a piece subtitled Why doesn't your data know more about you? From the article: 'It has been more than ten years since such information appliances as ATMs and grocery store UPC checkout counters were introduced. ... A common language for these devices has not been standardized, nor have current database solutions sufficiently captured the complexities involved in correctly expressing multifaceted data. ... As computing devices expand from the status-quo keyboard and desktop to a variety of form factors and scales, we can imagine workplaces configured to have a society of devices, each designed for a very specific task. As a whole, the collection of devices may act much like a workshop in the physical world, where the data moves among the specialized digital stations. For our society of devices to operate seamlessly, a mechanism will be required to (a) transport data between devices and (b) have it appear at each workstation, or tool, in the appropriate representation.'" -
A.I. Helicopter?
CowboyRobot writes "Australia's Commonwealth Scientific and Industrial Research Organization just launched the Mantis, a 'low-cost, intelligent small helicopter'. SMH reports that 'Within a decade armies of tiny helicopter drones will monitor traffic, inspect buildings for maintenance problems, map bushfires, look for faults in powerlines, and join search-and-rescue missions.' This is much larger than the Seiko flying robot reported last month, but the Mantis should be truly autonomous." -
Indian Robot Will Capture Space Debris
CowboyRobot writes "India is set to launch the 'Space Robot', which, controlled from Earth, will capture damaged satellites and space debris. This seems a less ambitious, and more immediately practical venture than the current Mars missions."