joabj writes "Virginia Tech researchers have found that the performance of programs running on multicore processors can vary from server to server, and even from core to core. Factors such as which core handles interrupts, or which cache holds the needed data can change from run to run. Such resources tend to be allocated arbitrarily now. As a result, program execution times can vary up to 10 percent. The good news is that the VT researchers are working on a library that will recognize inefficient behavior and rearrange things in a more timely fashion." Here is the paper, Asymmetric Interactions in Symmetric Multicore Systems: Analysis, Enhancements and Evaluation (PDF).

Barence writes "Mozilla CEO John Lilly has admitted the Firefox maker's relationship with Google has become 'more complicated' since the company launched its own browser. Mozilla is dependent on Google for the vast majority of its revenue and has previously worked closely with the search king's engineers on the development of Firefox. But that relationship appears to have cooled since Google released Chrome in the summer. 'We have a fine and reasonable relationship, but I'd be lying if I said that things weren't more complicated than they used to be.'"

KingofGnG writes "Though they belong to a genre already considered defunct and inadequate for the mainstream video game market, adventure games have a glorious past, a past that deserves to be remembered, and, of course, replayed. At the center of a good part of this effort of collective memory, there is ScummVM, the virtual machine which acts like an interface between the feelings and the puzzles from the good old times and the modern operating systems. As already highlighted before, the ScummVM target has grown immensely over time, going from the simple support of the 'classic' adventure games par excellence published by Lucasfilm/Lucasarts, to a range that includes virtually any single puzzle-solving game developed from the beginning of time up to the advent of the (Windows) NT platform. The last video game engine added to ScummVM within the past few days is Groovie, created by the software house Trilobyte for its first title released in 1993, The 7th Guest ."

RobGoldsmith writes "Earlier this week images were appearing on the Net showing the WhiteKnightTwo craft doing some tests in Mojave. The earliest tests showed perhaps two of the engines being used, while a later test showed all the engines working and some further testing. Today the four Pratt & Whitney Canada PW308A engines finally carried the craft into the air. The maiden flight of the WhiteKnightTwo lasted just shy of one hour and happened today at around 08:15 local time, at Mojave air and spaceport. Rumors suggest that a Beechcraft King Air was used for a chase plane. The craft will be used to position Virgin Galactic's SpaceShipTwo craft to fly into space; this is estimated to happen around 2010."

Matt_dk writes "A team of internationally renowned astronomers and opticians may have found a way to make "unbelievably large" telescopes on the Moon. 'It's so simple,' says Ermanno F. Borra, physics professor at the Optics Laboratory of Laval University in Quebec, Canada. 'Isaac Newton knew that any liquid, if put into a shallow container and set spinning, naturally assumes a parabolic shape, the same shape needed by a telescope mirror to bring starlight to a focus. This could be the key to making a giant lunar observatory.'"

jammag writes "Open source advocate Bruce Perens writes in Datamation about a major court victory for open source: 'An appeals court has erased most of the doubt around Open Source licensing, permanently, in a decision that was extremely favorable toward projects like GNU, Creative Commons, Wikipedia, and Linux.' The case, Jacobsen v. Katzer, revolved around free software coded by Bob Jacobsen that Katzer used in a proprietary application and then patented. When Katzer started sending invoices to Jacobsen (for what was essentially Jacobsen's own work), Jacobsen took the case to court and scored a victory that — for the first time — lays down a legal foundation for the protection of open source developers. The case hasn't generated as many headlines as it should."

MattSparkes writes "Apple has all but admitted that a British man invented the iPod over three decades ago in the 1970s. Unfortunately, he let the patent run out. When another company tried to grab a portion of its iPod profits, though, Apple went running to him to defend them in court. In return, it looks like he's in for a share of the cash generated from the sale of 163 million iPods."

photonic writes "After three years of study, the National Institute of Standards and Technology (NIST) finally released its report on the collapse of World Trade Center building 7. The main conclusion is that the building came down due to fire, not due to debris damage or some conspiracy demolition team. The fire started pretty small after the collapse of WTC 1, but was left to burn several floors out completely. The important finding is that the collapse was triggered by thermal expansion of beams, which could detach asymmetrically loaded girders from the main columns. Some limited pancaking of floors then caused a lack of lateral support and buckling of a single column. This triggered the failure of the entire core of the building, which finally fell down as a single piece. Crackpot theories can be discussed elsewhere; please limit the discussion to the science here. All documents can be found at NIST's WTC page, which read like a porn magazine for finite element junkies. Simulation movies are also available. And yes, they used Beowulf clusters to do the simulations, some of which lasted for several months."

dtjohnson writes "Data from the United Kingdom Meteorological Office suggests that 2008 will be an unusually cold year due to the La Nina effect in the western Pacific ocean. Not to worry, though, as the La Nina effect has faded recently so its effect on next year's temperatures will be reduced. However, another natural cycle, the Atlantic Multidecadal Oscillation, is predicted to hold global temperatures steady for the next decade before global warming takes our planet into new warmth. If these predictions are correct, there must be a lot of planetary heat being stored away somewhere ... unless the heat output from the sun is decreasing rather than increasing or the heat being absorbed by the earth is decreasing due to changes in the earth's albedo."

Anonymous Hacker writes "I'm in a bit of a bind. My young teenage son is starting to get curious about computers, and in particular, programming. Now, I'm a long time kernel hacker (Linux, BSD and UNIX). I have no trouble handling some of the more obscure things in the kernel. But teaching is not something that I'm good at, by any means. Heck, I can't even write useful documentation for non-techies. So my question is: what's the best way to encourage his curiosity and enable him to learn? Now, I know there are folks out there with far better experience in this area than myself. I'd really appreciate any wisdom you can offer. I'd also be especially interested in what younger people think, in particular those who are currently in college or high school. I've shown my son some of the basics of the shell, the filesystem, and even how to do a 'Hello World' program in C. Yet, I have to wonder if this is the really the right approach. This was great when I was first learning things. And it still is for kernel hacking, and other things. But I'm concerned whether this will bore him, now that there's so much more available and much of this world is oriented towards point-n-click. What's the best way to for a young teen to get started in exploring this wonderful world of computers and learning how to program? In a *NIX environment, preferably." Whether or not you have suggestions for generating interest or teaching methods, there was probably something that first piqued your curiosity. It seems like a lot of people get into programming by just wondering how something works or what they can make it do. So, what caught your eye?

theodp writes "The NY Times' Virginia Heffernan confesses to being stumped by how to excerpt the language on message boards and blogs. For example, Heffernan notes she could quote kavya on Yahoo Answers word for word ('How is babby formed? How girl get pragnent?'), but worries that doing so makes kavya look like an idiot rather that the sweetly earnest 7-year-old that he or she might be. Is it better to paraphrase or revise the question into 'How is a baby formed?' For now, Heffernan is going to let things stand (stet) and treat message boards like novels, preserving idiosyncrasies of language as far as possible and taking them as intentional — a 'wuz' on the Internet remains 'wuz' in the paper."

AdamWill writes "Lately it's hard to avoid the buzz about netbooks — the small, cheap laptop systems that were popularized by the Asus Eee PC. Mandriva is providing the innovative operating system for the upcoming GDium netbook 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 innovative G-Key system stores the Mandriva operating system and all the user data on a USB key — nothing is permanently stored inside the GDium. You can use your own desktop and data by plugging the G-Key into any GDium."

An anonymous reader writes "derStandard.at has an extensive interview with Ubuntu-founder Mark Shuttleworth, in which he seems to be pushing for a switch to QT in the GNOME-project: 'I think it would be perfectly possible to deliver the values of GNOME on top of QT.' He goes on to talk about Apple as an 'innovation leader' and problems with Hardy Heron."

sammydee writes "Phoronix reports that GPU based video decoding acceleration will be implemented in Gallium3d sometime this year. Drivers currently using Gallium3d include the open source nouveau driver for NVIDIA cards and experimental Intel GMA drivers. This is definitely good news for anybody who has ever tried to play high-definition 1080p content on any CPU older than about a year."