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• No OpenCL devices (13.10 Core I5 4430 Intel Graphics HD)

  - by Itai Bar-Haim

  I've been looking quite a lot for this but couldn't find anything that worked. I have an Intel Core I5-4430 based system with no extra graphics adapter (so it's using the on-board, integrated Intel Graphics HD that is part of the CPU), running Ubuntu 13.10. When running BOINC World Community Grid it says "No usable GPUs". When running a bitcoin mining program it says "No OpenCL devices". I searched the web, found two possible solutions - one was to use the Intel OpenCL driver for Xeon platforms, the other was to use the AMD driver. Tried both. I failed installing the Intel driver as there were too many prerequisites that I just didn't manage to install, and the AMD installation was quite fast to its size (it's 200MB, and took far less than a minute to install), but it didn't solve the problem. Perhaps I'm looking in the wrong direction here, I'm not sure, but is there anyway I can utilize the advance features of my CPU for those distributed computation programs?

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• Effective template system

  - by Alex

  I'm building a content management system, and need advice on which theming structure should I adopt. A few options (This is not a complete list): Wordpress style: the controller decides what template to load based on the user request, like: home page / article archive / single article page etc. each of these templates are unrelated to other templates, and must exist within the theme the theme developer decides if (s)he want to use inner-templates (like "sidebar", "sidebar item"), and includes them manually where (s)he thinks are needed. Drupal style: the controller gives control to the theme developer only to inner-templates; if they don't exist it falls back internally to some default templates (I find this very restrictive) Funky style: the controller only loads a "index.php" template and provides the theme developer conditional tags, which he can use to include inner-templates if (s)he wants. Among these styles, or others what style of template system allows for fast development and a more concise design and implementation.

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• Timing Calculations for Opengl ES 2.0 draw calls

  - by Arun AC

  I am drawing a cube in OpenGL ES 2.0 in Linux. I am calculating the time taken for each frame using below function #define NANO 1000000000 #define NANO_TO_MICRO(x) ((x)/1000) uint64_t getTick() { struct timespec stCT; clock_gettime(CLOCK_MONOTONIC, &stCT); uint64_t iCurrTimeNano = (1000000000 * stCT.tv_sec + stCT.tv_nsec); // in Nano Secs uint64_t iCurrTimeMicro = NANO_TO_MICRO(iCurrTimeNano); // in Micro Secs return iCurrTimeMicro; } I am running my code for 100 frames with simple x-axis rotation. I am getting around 200 to 220 microsecs per frame. that means am i getting around (1/220microsec = 4545) FPS Is my GPU is that fast? I strongly doubt this result. what went wrong in the code? Regards, Arun AC

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• Ubuntu 11.10, FF 11, ATI Catalyst v12.2, Driver Package version 8.95, WebGL doesn't work

  - by Victor S

  I'm running Ubuntu 11.10, FF 11, ATI Catalyst v12.2, Driver Package version 8.95, WebGL doesn't work. This is a pretty capable setup and definetly did have FF work previously, Note: I've downloaded and installed the ATI drivers from AMD. Not sure how to get WebGL working. Updated My video card info: 01:00.0 VGA compatible controller: ATI Technologies Inc Cypress [Radeon HD 5800 Series] (prog-if 00 [VGA controller]) Subsystem: ATI Technologies Inc Device 0b00 Flags: bus master, fast devsel, latency 0, IRQ 44 Memory at d0000000 (64-bit, prefetchable) [size=256M] Memory at fbee0000 (64-bit, non-prefetchable) [size=128K] I/O ports at d000 [size=256] Expansion ROM at fbec0000 [disabled] [size=128K] Capabilities: [50] Power Management version 3 Capabilities: [58] Express Legacy Endpoint, MSI 00 Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?> Capabilities: [150] Advanced Error Reporting Kernel driver in use: fglrx_pci Kernel modules: fglrx, radeon

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• Friday Fun: The Rise of Atlantis

  - by Asian Angel

  The best day of the work week is finally here, so take a few minutes to have some fun while waiting to go home. In this week’s game you set off on a campaign across ancient Mediterranean regions to acquire multiple artifacts in a quest for success. Special Note: This flash version of the game allows you to play through three areas (Phoenicia, Babylon, and Egypt) of the overall campaign that is available in the full version. Even in its limited form it still provides a good amount of game play. How to See What Web Sites Your Computer is Secretly Connecting To HTG Explains: When Do You Need to Update Your Drivers? How to Make the Kindle Fire Silk Browser *Actually* Fast!

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• Visio Stencils for ADF Faces Available on SampleCode

  - by juan.ruiz

  We are pleased to announce the launch of a new tool aiming to help visual designers and UI developers to build mockups for ADF applications outside of JDeveloper in a fast and quickly way. Available through samplecode.oracle.com, the ADF Visio stencils provide you with a large set of shapes, icons and layouts representing the most commonly used visual components. You can check out this video that shows you how to get you started using the Visio stencils. Let us know what do you think about the stencils on the JDeveloper Forum, your feedback is always important to us.

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• Collisions between moving ball and polygons

  - by miguelSantirso

  I know this is a very typical problem and that there area a lot of similar questions, but I have been looking for a while and I have not found anything that fits what I want. I am developing a 2D game in which I need to perform collisions between a ball and simple polygons. The polygons are defined as an array of vertices. I have implemented the collisions with the bounding boxes of the polygons (that was easy) and I need to refine that collision in the cases where the ball collides with the bounding box. The ball can move quite fast and the polygons are not too big so I need to perform continuous collisions. I am looking for a method that allows me to detect if the ball collides with a polygon and, at the same time, calculate the new direction for the ball after bouncing in the polygon. (I am using XNA, in case that helps)

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• Map of the Dead Helps You Plan For a Zombie Apocalypse

  - by Jason Fitzpatrick

  There’s no time like the present to start charting out your zombie apocalypse escape route. Map of the Dead highlights key locations–like gun stores, gas stations, and pharmacies–in your immediate area. The key to surviving the zombie horde is fast access to supplies. Unless you have a bunker under your house filled with goodies, you’ll need more fuel, ammo, and medical supplies–Map of the Dead makes it easy to see where the goods are in your locale. Make sure to mouse over the map key for some entertaining commentary. Map of the Dead [via Neatorama] The Best Free Portable Apps for Your Flash Drive Toolkit How to Own Your Own Website (Even If You Can’t Build One) Pt 3 How to Sync Your Media Across Your Entire House with XBMC

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• Improve Your Google Search Skills [Infographic]

  - by Jason Fitzpatrick

  Don’t limit yourself to just plugging in simple search terms to Google; check out this infographic and learn a search string search or two. You don’t need to limit yourself to searching just for simple strings; Google supports all manner of handy search tricks. If you want to search just HowToGeek.com’s archive of XBMC articles, for example, you can plug in site:howtogeek.com XBMC to search our site. Get More Out of Google [HackCollege via Mashable] How to See What Web Sites Your Computer is Secretly Connecting To HTG Explains: When Do You Need to Update Your Drivers? How to Make the Kindle Fire Silk Browser *Actually* Fast!

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• Battle Zombies on Your Desktop with the Dead Island Theme for Windows 7

  - by Asian Angel

  Do you love battling zombie hordes? Then welcome to Banoi Island where a Zombie outbreak has just occurred and you must race against time to save the other survivors and yourself! The theme comes with eight wallpapers full of zombie fighting goodness to help turn your desktop into the perfect battleground. The theme is available in the following aspect ratios: 4:3 Aspect Ratio Resolutions: 1600*1200, 1280*960, 1152*864, 1024*768 16:9 Aspect Ratio Resolutions: 1920*1080, 1600*900, 1366*768, 1360*768 16:10 Aspect Ratio Resolutions: 1920*1200, 1680*1050, 1440*900, 1280*800 Download the Dead Island Theme for Windows 7 [7 Tutorials] How to See What Web Sites Your Computer is Secretly Connecting To HTG Explains: When Do You Need to Update Your Drivers? How to Make the Kindle Fire Silk Browser *Actually* Fast!

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• Pain of the Week/Expert's Perspective: Performance Tuning for Backups and Restores

  - by KKline

  First off - the Pain of the Week webcast series has been renamed. It's now known as The Expert's Perspective . Please join us for future webcasts and, if you're interested in speaking, drop me a note to see if we can get you on the roster! The bigger your databases get, the longer backups take. That doesn't really seem like a huge problem — until disaster strikes and you need to restore your databases as fast as possible. Join my buddy Brent Ozar ( blog | twitter ), a Microsoft Certified Master of...(read more)

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• What are the warning signs of impending doom to watch out for on a project?

  - by ConroyP

  Having worked on a failed project is one of the few things that most programmers have in common, regardless of language used, industry or experience. These projects can be great learning experiences, soul-crushing disasters (or both!), and can occur for a multitude of reasons: upper management change of heart under-skilled / under-resourced team emergence of superior competitor during dev cycle over/under management Once you've worked on a couple of such projects, is it possible to recognise at an early stage exactly when a project is doomed to fail? For me, a big sign is having a hard & fast external deadline combined with feature creep. I've seen projects which were well planned out and proceeding right on schedule go horribly off the rails once the late feature requests started to roll in and get added to the final "deliverable". The proposers of these requests earned the nickname of Columbo, due to rarely leaving the room without asking for "just one more thing". What are the warning signs you look out for that set off the alarm bells of impending doom in your head?

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• Google I/O 2012 - Chrome Developer Tools Evolution

  Google I/O 2012 - Chrome Developer Tools Evolution Sam Dutton, Pavel Feldman Web app development moves fast and Chrome Developer Tools is still keeping you one step ahead. If you know your way around the Dev Tools and would like to take your skills to a higher level, this session will kick your productivity into overdrive. Since last year's installment, we've added a whole slew of features that empower developers to make rich web apps, so in this demo-rich session we'll explain how to use those tools to develop and debug on mobile and desktop. We'll take you jank hunting with the new timeline, delve into minified JavaScript via Source Maps, debug Web Workers, and much more. Join us and learn what Chrome Developer Tools can do for you. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 1722 36 ratings Time: 59:41 More in Science & Technology

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• Need ideas for an algorithm to draw irregular blotchy shapes

  - by Yttermayn

  I'm looking to draw irregular shapes on an x,y grid, and I'd like to come up with a simple, fast method if possible. My only idea so far is to draw a bunch of circles of random sizes very near each other, but at a random distance apart from a more or less central coordinate, then fill in any blank spaces. I realize this is a clunky, inelegant method, hopefully it will give you a rough idea of the kinds of rounded, random blotchy shapesI'm shooting for. Please suggest methods to accomplish this, I'm not so much interested in code. I can noodle that part out myself. Thanks!

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• Speaking at AMD Fusion conference

  - by Daniel Moth

  Next Wednesday at 2pm I will be presenting a session at the AMD Fusion developer summit in Bellevue, Washington State. For more on this conference please visit the official website. If you filter the catalog by 'Speaker Last Name' to "Moth", you'll find my talk. For your convenience, below is the title and abstract Blazing-fast code using GPUs and more, with Microsoft Visual C++ To get full performance out of mainstream hardware, high-performance code needs to harness, not only multi-core CPUs, but also GPUs (whether discrete cards or integrated in the processor) and other compute accelerators to achieve orders-of-magnitude speed-up for data parallel algorithms. How can you as a C++ developer fully utilize all that heterogeneous hardware from your Visual Studio environment? How can your code benefit from this tremendous performance boost without sacrificing your developer productivity or the portability of your solution? The answers will be presented in this session that introduces a new technology from Microsoft. Hope to see many of you there! Comments about this post welcome at the original blog.

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• Mobile Identity Management at SuperValu

  - by Tanu Sood

  While organizations are fast embracing BYOD (Bring Your Own Device) culture to attract and retain best talent, improve productivity, bring agility and drive down costs, SuperValu coined their own term (and trend): TYDH – Take Your Device Home. Yes, SuperValu, a Minn based, 18,000 employees strong, food retailer handed out 2,200 iPads to store directors at locations across the country. The motivation behind this reverse trend? Phillip Black, Director of Identity & Access Management at SuperValu, shared the reasoning behind this trend in his talk at last week’s Oracle OpenWorld 2012. "It gives them productivity tools to better manage their store," says Black. Intrigued? Find out more in this recently published news article. And learn more about Oracle Identity Management 11gR2 mobile- and social- ready sign-on features today. Additional Resources: Press Release: Oracle announces Identity Management 11g Release 2 On-Demand webcast: Identity Management 11gR2 Launch Oracle Magazine: Security on the Move Website: Oracle Identity Management Blog Post: Mobile and Social Sign-on with Oracle Access Management

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• What is wrong with my specular phong shading

  - by Thijser

  I'm sorry if this should be placed on stackoverflow instead however seeing as this is graphics related I was hoping you guys could help me: I'm attempting to write a phong shader and currently working on the specular. I came acros the following formula: base*pow(dot(V,R),shininess) and attempted to implement it (V is the posion of the viewer and R the reflective vector). This gave the following result and code: Vec3Df phongSpecular(const Vec3Df & vertexPos, Vec3Df & normal, const Vec3Df & lightPos, const Vec3Df & cameraPos, unsigned int index) { Vec3Df relativeLightPos=(lightPos-vertexPos); relativeLightPos.normalize(); Vec3Df relativeCameraPos= (cameraPos-vertexPos); relativeCameraPos.normalize(); int DotOfNormalAndLight = Vec3Df::dotProduct(normal,relativeLightPos); Vec3Df reflective =(relativeLightPos-(2*DotOfNormalAndLight*normal))*-1; reflective.normalize(); float phongyness= Vec3Df::dotProduct(reflective,relativeCameraPos); if (phongyness<0){ phongyness=0; } float shininess= Shininess[index]; float speculair = powf(phongyness,shininess); return Ks[index]*speculair; } I'm looking for something more like this:

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• Resources on learning to program in machine code?

  - by AceofSpades

  I'm a student, fresh into programming and loving it, from Java to C++ and down to C. I moved backwards to the barebones and thought to go further down to Assembly. But, to my surprise, a lot of people said it's not as fast as C and there is no use. They suggested learning either how to program a kernel or writing a C compiler. My dream is to learn to program in binary (machine code) or maybe program bare metal (program micro-controller physically) or write bios or boot loaders or something of that nature. The only possible thing I heard after so much research is that a hex editor is the closest thing to machine language I could find in this age and era. Are there other things I'm unaware of? Are there any resources to learn to program in machine code? Preferably on a 8-bit micro-controller/microprocessor. This question is similar to mine, but I'm interested in practical learning first and then understanding the theory.

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• Custom code in SharePoint

  - by Sahil Malik

  SharePoint 2010 Training: more information Microsoft launched SharePoint 2013 with great fanfare. But what stuck out was the introductory blog post by Corporate SVP of SharePoint, Jeff Teper. You can read the blogpost titled “The New SharePoint”. But one paragraph has stuck out, “Use SharePoint as an out-of-box application whenever possible - We designed the new SharePoint UI to be clean, simple and fast and work great out-of-box. We encourage you not to modify it which could add complexity, performance and upgradeability and to focus your energy on working with users and groups to understand how to use SharePoint to improve productivity and collaboration and identifying and promoting best practices in your organization.” The keywords here is “whenever possible”. The reality is, frequently it is not possible to not customize SharePoint in order to meet the customer requirements. But you must try and minimize SharePoint customization. There are many ways Read full article ....

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• Do search engines treat index pages with excerpts as duplicate content of the pages they link to?

  - by Perry Roper

  I am using WordPress and in my post sidebar I have related posts which may be of interest to the user, however, I also have an excerpt of each article which is normally the first paragraph of the post it is linking to. For example: http://musicdune.com/reviews/album-review-ellie-goulding-lights If you do a Google Search for the first excerpt in the realted posts section from that page you get 4-5 results from my domain, http://www.google.co.uk/search?sourceid=chrome&ie=UTF-8&q=Strip+back+the+synths,+fast+beats+and+the+other+pop+elements,+and+you%E2%80%99re+left+with+something+elegant+and+soulful Is it recommended that I remove the excerpt from the related posts?

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• API Design Techniques

  - by Dehumanizer

  Is it right or more beautiful to name the functions with an prefix, like in Qt? Or using "many" namespaces, but 'normal' names for functions? For example, slOpenFile(); //"sl" means "some lib" vs some_lib::file_functions::openFile(); UPD: I've read somewhere that the first variant(using some prefix) is better, because the API users can perform 'fast' search among the documentation and in the Internet. E.g. by typing the magic prefix search engine starts to advice the exact functions. Is it enough to use the first variant?

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• DIY Photo Rig Takes Laser-Triggered 3D Insect Photos

  - by Jason Fitzpatrick

  How do you catch a butterfly in flight and in 3D? You do it with this laser triggered photo rig. This it yourself monster is an absolute beauty of at-home engineering. It has dual focus planes, dual flashes, a laser trigger, and enough machined aluminum to make us wish we had a CNC out in the garage. If you’re one part photographer, one part electronics tinker, and one part machinist, this is the kind of weekend project that will cement you into neighborhood DIY lore. Hit up the link below for a full build guide and sample photos. High-Speed 3D Portable Macro Unit [via DIY Photography] How to Make the Kindle Fire Silk Browser *Actually* Fast! Amazon’s New Kindle Fire Tablet: the How-To Geek Review HTG Explains: How Hackers Take Over Web Sites with SQL Injection / DDoS

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• Sign-On für APEX Anwendungen mit Kerberos

  - by Carsten Czarski

  Endbenutzer von APEX-Anwendungen arbeiten fast immer von einem Windows-PC aus - und sehr oft sind sie in einer Windows-Domäne eingeloggt. Da liegt es doch nahe, diesen Login auch für die APEX-Anwendung zu verwenden und sich nicht erneut anmelden zu müssen. Leider unterstützt APEX ein solches Verfahren nicht out-of-the-box. Nimmt man jedoch einige Open-Source Komponenten hinzu, so lässt sich die Anforderung leicht umsetzen. Niels de Bruijn von der MT AG hat ein Dokument zusammengestellt, welches die Vorgehensweise beschreibt: Single Sign-On für APEX Anwendungen mit Kerberos - schauen Sie einfach mal rein.

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• How do I start correctly in building database classes in c#?

  - by e4rthdog

  I am new in C# programming and in OOP. I need to dive into web applications for my company, and I need to do it fast and correct. So even that I know ASP.NET MVC is the way to go, I want to start with some simple applications with ASP.NET Webforms and then advance to MVC logic. Also regarding my db classes: I plan to create common database classes in order to be able to use them either from WinForms or ASP.NET applications. I also know that the way to go is to learn about ORM and EF. BUT I also want to start from where I am feeling comfortable and that is the traditional ADO.NET way. So about my Data Access Layer classes: Should I return my results in datasets or arraylists/lists? Should my methods do their own connect/disconnect from the db, or have separate methods and let the application maintain the connection?

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• Installation of Ubuntu 13.04 seems to take forever

  - by Michel

  I am about to install Ubuntu 13.04 on my AMD x64 machine and the installation of the lib packages seems to take forever. Is that a known issue? I know that it might take some time when checking to download packages from the Internet but this went through very fast. In the terminal-like view I can see, the system is just unpacking, installing, configuring etc. in a quite slow way. In the opening screen it reads: It just takes a few minutes (or something close to that). Again: Is that a normal behavior or am I doing something wrong and what could I do to speed up the process in case I'm running an installation again on another system?

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