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  • Erlang: How to view output of io:format/2 calls in processes spawned on remote nodes.

    - by jkndrkn
    Hello, I am working on a decentralized Erlang application. I am currently working on a single PC and creating multiple nodes by initializing erl with the -sname flag. When I spawn a process using spawn/4 on its home node, I can see output generated by calls io:format/2 within that process in its home erl instance. When I spawn a process remotely by using spawn/4 in combination with register_name, output of io:format/2 is sometimes redirected back to the erl instance where the remote spawn/4 call was made, and sometimes remains completely invisible. Similarly, when I use rpc:call/4, output of io:format/2 calls is redirected back to the erl instance where the `rpc:call/4' call is made. How do you get a process to emit debugging output back to its parent erl instance?

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  • How to implement VS 2010-like floating tabs?

    - by unclepaul84
    I'm building a tabbed WPF application. I'm planning to put MapPoint control (ActiveX) on one of the tabs. I want to have the option to float this tab just like in VS 2010. The resulting widow must contain the same instance of the MapPoint control (because each instance of the control starts up separate MapPoint instance). Any idea how to implement this?

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  • unable to add objects to saved collection in GAE using JDO

    - by Jeffrey Chee
    I have a ClassA containing an ArrayList of another ClassB I can save a new instance of ClassA with ClassB instances also saved using JDO. However, When I retrieve the instance of Class A, I try to do like the below: ClassA instance = PMF.get().getPersistenceManager().GetObjectByID( someid ); instance.GetClassBArrayList().add( new ClassB(...) ); I get an Exception like the below: Uncaught exception from servlet com.google.appengine.api.datastore.DatastoreNeedIndexException: no matching index found.. So I was wondering, Is it possible to add a new item to the previously saved collection? Or was it something I missed out. Best Regards

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  • VirtualBox 4.2.14 is now available

    - by user12611829
    The VirtualBox development team has just released version 4.2.14, and it is now available for download. This is a maintenance release for version 4.2 and contains quite a few fixes. Here is the list from the official Changelog. VMM: another TLB invalidation fix for non-present pages VMM: fixed a performance regression (4.2.8 regression; bug #11674) GUI: fixed a crash on shutdown GUI: prevent stuck keys under certain conditions on Windows hosts (bugs #2613, #6171) VRDP: fixed a rare crash on the guest screen resize VRDP: allow to change VRDP parameters (including enabling/disabling the server) if the VM is paused USB: fixed passing through devices on Mac OS X host to a VM with 2 or more virtual CPUs (bug #7462) USB: fixed hang during isochronous transfer with certain devices (4.1 regression; Windows hosts only; bug #11839) USB: properly handle orphaned URBs (bug #11207) BIOS: fixed function for returning the PCI interrupt routing table (fixes NetWare 6.x guests) BIOS: don't use the ENTER / LEAVE instructions in the BIOS as these don't work in the real mode as set up by certain guests (e.g. Plan 9 and QNX 4) DMI: allow to configure DmiChassisType (bug #11832) Storage: fixed lost writes if iSCSI is used with snapshots and asynchronous I/O (bug #11479) Storage: fixed accessing certain VHDX images created by Windows 8 (bug #11502) Storage: fixed hang when creating a snapshot using Parallels disk images (bug #9617) 3D: seamless + 3D fixes (bug #11723) 3D: version 4.2.12 was not able to read saved states of older versions under certain conditions (bug #11718) Main/Properties: don't create a guest property for non-running VMs if the property does not exist and is about to be removed (bug #11765) Main/Properties: don't forget to make new guest properties persistent after the VM was terminated (bug #11719) Main/Display: don't lose seamless regions during screen resize Main/OVF: don't crash during import if the client forgot to call Appliance::interpret() (bug #10845) Main/OVF: don't create invalid appliances by stripping the file name if the VM name is very long (bug #11814) Main/OVF: don't fail if the appliance contains multiple file references (bug #10689) Main/Metrics: fixed Solaris file descriptor leak Settings: limit depth of snapshot tree to 250 levels, as more will lead to decreased performance and may trigger crashes VBoxManage: fixed setting the parent UUID on diff images using sethdparentuuid Linux hosts: work around for not crashing as a result of automatic NUMA balancing which was introduced in Linux 3.8 (bug #11610) Windows installer: force the installation of the public certificate in background (i.e. completely prevent user interaction) if the --silent command line option is specified Windows Additions: fixed problems with partial install in the unattended case Windows Additions: fixed display glitch with the Start button in seamless mode for some themes Windows Additions: Seamless mode and auto-resize fixes Windows Additions: fixed trying to to retrieve new auto-logon credentials if current ones were not processed yet Windows Additions installer: added the /with_wddm switch to select the experimental WDDM driver by default Linux Additions: fixed setting own timed out and aborted texts in information label of the lightdm greeter Linux Additions: fixed compilation against Linux 3.2.0 Ubuntu kernels (4.2.12 regression as a side effect of the Debian kernel build fix; bug #11709) X11 Additions: reduced the CPU load of VBoxClient in drag'and'drop mode OS/2 Additions: made the mouse wheel work (bug #6793) Guest Additions: fixed problems copying and pasting between two guests on an X11 host (bug #11792) The full changelog can be found here. You can download binaries for Solaris, Linux, Windows and MacOS hosts at http://www.virtualbox.org/wiki/Downloads Technocrati Tags: Oracle Virtualization VirtualBox

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  • Problem using FluentNHibernate, SQLite and Enums

    - by weenet
    I have a Sharp Architecture based app using Fluent NHibernate with Automapping. I have the following Enum: public enum Topics { AdditionSubtraction = 1, MultiplicationDivision = 2, DecimalsFractions = 3 } and the following Class: public class Strategy : BaseEntity { public virtual string Name { get; set; } public virtual Topics Topic { get; set; } public virtual IList Items { get; set; } } If I create an instance of the class thusly: Strategy s = new Strategy { Name = "Test", Topic = Topics.AdditionSubtraction }; it Saves correctly (thanks to this mapping convention: public class EnumConvention : IPropertyConvention, IPropertyConventionAcceptance { public void Apply(FluentNHibernate.Conventions.Instances.IPropertyInstance instance) { instance.CustomType(instance.Property.PropertyType); } public void Accept(FluentNHibernate.Conventions.AcceptanceCriteria.IAcceptanceCriteria criteria) { criteria.Expect(x = x.Property.PropertyType.IsEnum); } } However, upon retrieval, I get an error regarding an attempt to convert Int64 to Topics. This works fine in SQL Server. Any ideas for a workaround? Thanks.

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  • CodePlex Daily Summary for Tuesday, June 19, 2012

    CodePlex Daily Summary for Tuesday, June 19, 2012Popular ReleasesXenta Framework - extensible enterprise n-tier application framework: Xenta Framework 1.8.0: System Requirements OS Windows 7 Windows Vista Windows Server 2008 Windows Server 2008 R2 Web Server Internet Information Service 7.0 or above .NET Framework .NET Framework 4.0 WCF Activation feature HTTP Activation Non-HTTP Activation for net.pipe/net.tcp WCF bindings ASP.NET MVC ASP.NET MVC 3.0 Database Microsoft SQL Server 2005 Microsoft SQL Server 2008 Microsoft SQL Server 2008 R2 Additional Deployment Configuration Started Windows Process Activation service Start...ASP.NET REST Services Framework: Release 1.3 - Standard version: The REST-services Framework v1.3 has important functional changes allowing to use complex data types as service call parameters. Such can be mapped to form or query string variables or the HTTP Message Body. This is especially useful when REST-style service URLs with POST or PUT HTTP method is used. Beginning from v1.1 the REST-services Framework is compatible with ASP.NET Routing model as well with CRUD (Create, Read, Update, and Delete) principle. These two are often important when buildin...NanoMVVM: a lightweight wpf MVVM framework: v0.10 stable beta: v0.10 Minor fixes to ui and code, added error example to async commands, separated project into various releases (mainly into logical wholes), removed expression blend satellite assembliesCrashReporter.NET : Exception reporting library for C# and VB.NET: CrashReporter.NET 1.1: Added screenshot support that takes screenshot of user's desktop on application crash and provides option to include screenshot with crash report. Added Windows version in crash reports. Added email field and exception type field in crash report dialog. Added exception type in crash reports. Added screenshot tab that shows crash screenshot.RULI Chain Code Image Generator: RULI Chain Code BW Image Generator v. 0.5: bugfix: corrected wrong height/width 2 pixel too much in each directionMFCMAPI: June 2012 Release: Build: 15.0.0.1034 Full release notes at SGriffin's blog. If you just want to run the MFCMAPI or MrMAPI, get the executables. If you want to debug them, get the symbol files and the source. The 64 bit builds will only work on a machine with Outlook 2010 64 bit installed. All other machines should use the 32 bit builds, regardless of the operating system. Facebook BadgeMonoGame - Write Once, Play Everywhere: MonoGame 2.5.1: Release Notes The MonoGame team are pleased to announce that MonoGame v2.5.1 has been released. This release contains important bug fixes and minor updates. Recent additions include project templates for iOS and MacOS. The MonoDevelop.MonoGame AddIn also works on Linux. We have removed the dependency on the thirdparty GamePad library to allow MonoGame to be included in the debian/ubuntu repositories. There have been a major bug fix to ensure textures are disposed of correctly as well as some ...JayData - The cross-platform HTML5 data-management library for JavaScript: JayData 1.1.0: JayData is a unified data access library for JavaScript developers to query and update data from different sources like WebSQL, IndexedDB, OData, Facebook or YQL. The library can be integrated with Knockout.js or Sencha Touch 2. See it in action in this 6 minutes video Sencha Touch 2 example app using JayData: Netflix browser. New features in JayData 1.1.0http://jaydata.org/blog/release-notes OData provider improvements We worked out the support of OData v1 and v3 (beyond v2). Visit http://...XDA ROM Hub: XDA ROM Hub v0.36: Fixed typo's :D Added simple guide.JaySvcUtil - generate JavaScript context from OData metadata: JaySvcUtil 1.1: JaySvcUtil 1.1 You will need the JayData library to use contexts generated with JaySvcUtil! Get it from here: http://jaydata.codeplex.com.????: ????2.0.2: 1、???????????。 2、DJ???????10?,?????????10?。 3、??.NET 4.5(Windows 8)????????????。 4、???????????。 5、??????????????。 6、???Windows 8????。 7、?????2.0.1???????????????。 8、??DJ?????????。Azure Storage Explorer: Azure Storage Explorer 5 Preview 1 (6.17.2012): Azure Storage Explorer verison 5 is in development, and Preview 1 provides an early look at the new user interface and some of the new features. Here's what's new in v5 Preview 1: New UI, similar to the new Windows Azure HTML5 portal Support for configuring and viewing storage account logging Support for configuring and viewing storage account monitoring Uses the Windows Azure 1.7 SDK libraries Bug fixesCodename 'Chrometro': Developer Preview: Welcome to the Codename 'Chrometro' Developer Preview! This is the very first public preview of the app. Please note that this is a highly primitive build and the app is not even half of what it is meant to be. The Developer Preview sports the following: 1) An easy to use application setup. 2) The Assistant which simplifies your task of customization. 3) The partially complete Metro UI. 4) A variety of settings 5) A partially complete web browsing experience To get started, download the Ins...????????API for .Net SDK: SDK for .Net ??? Release 2: 6?19????? ?? - ???????????????,???????0?????????。 ?? - ???Entity?????Suggestion??????????????JSON????????。 ?? - ???OAuth?Request??????AccessToken???SourceKey????QueryString?????????。 6?17????? ??? - .net 4.0 SDK??Dynamic??????????????????API?? ??? - ?Utility?????????API??????DateTime???ParseUTCDate ?? - ?????????????Json.net???,???SDK????Json.net?????。 ?? - ???Client??????API???GetCommand?PostCommand,?????????????????API??。 ?? - ???????,??????API?,??????API???,???string???,??Enti...Cosmos (C# Open Source Managed Operating System): Release 92560: Prerequisites Visual Studio 2010 - Any version including Express. Express users must also install Visual Studio 2010 Integrated Shell runtime VMWare - Cosmos can run on real hardware as well as other virtualization environments but our default debug setup is configured for VMWare. VMWare Player (Free). or Workstation VMWare VIX API 1.11AutoUpdaterdotNET : Autoupdate for VB.NET and C# Developer: AutoUpdater.NET 1.1: Release Notes New feature added that allows user to select remind later interval.Microsoft SQL Server Product Samples: Database: AdventureWorks 2008 OLTP Script: Install AdventureWorks2008 OLTP database from script The AdventureWorks database can be created by running the instawdb.sql DDL script contained in the AdventureWorks 2008 OLTP Script.zip file. The instawdb.sql script depends on two path environment variables: SqlSamplesDatabasePath and SqlSamplesSourceDataPath. The SqlSamplesDatabasePath environment variable is set to the default Microsoft ® SQL Server 2008 path. You will need to change the SqlSamplesSourceDataPath environment variable to th...WipeTouch, a jQuery touch plugin: 1.2.0: Changes since 1.1.0: New: wipeMove event, triggered while moving the mouse/finger. New: added "source" to the result object. Bug fix: sometimes vertical wipe events would not trigger correctly. Bug fix: improved tapToClick handler. General code refactoring. Windows Phone 7 is not supported, yet! Its behaviour is completely broken and would require some special tricks to make it work. Maybe in the future...Phalanger - The PHP Language Compiler for the .NET Framework: 3.0.0.3026 (June 2012): Fixes: round( 0.0 ) local TimeZone name TimeZone search compiling multi-script-assemblies PhpString serialization DocDocument::loadHTMLFile() token_get_all() parse_url()BlackJumboDog: Ver5.6.4: 2012.06.13 Ver5.6.4  (1) Web???????、???POST??????????????????New Projectsasp.net membership: A basic membership project for the use of various learning issues like MVC, Entity Framework, ASP.NET membership, Ajax, IOC Container, Application architectureCRM 2011 Visual Studio Tools: CRM 2011 Visual Studio Tools is a VSPackage for Visual Studio 2010. It contains at the beginning the CRM 2011 Script Injector, which is using the FiddlerCore. This will allow the JavaScript developer to test his scripts without the need to upload and publish the files in CRM. The tool will exchange the needed scripts on the fly with the version on your local machine, while you navigate through the CRM in your Browser. It is supporting right now Visual Studio 2010 and Microsoft CRM 2011 On-...Crop Circle Maze: This project is for our team to educate ourselves on developing 3D programming skills.DarkLight Engine: Le DarkLight engine est un moteur 3D basé programmé en C# et utilisant les API DirectX10 et WPF.DirectX Tool Kit: DirectXTK is a shared source library of helpers for Direct3D 11 C++ applications.DirectXTex texture processing library: DirectXTex is a shared source library for doing Direct3D texture processing and image I/O.FluentHtmlWriter: Extensions to HtmlTextWriter to enable a fluent coding interfaceHarrier: A multithreaded TCP/IP server with Lua scripting, designed as a base for your own server projects.Hide "Limited Access" in SharePoint interface: Hides "Limited Access" entries unitl user decides to show them in user.aspxiPark: iParkogeditor.net: ogeditor.net is web based WYSIWYG HTML editor with built-in File Manager. ogEditor has some unique features never seen before.Pi# - Raspberry Pi GPIO Library for .NET: A .NET GPIO Library for the Raspberry PiProLaunch: ProLaunch is an Application Launcher for Windows w/ Twitter Integration and URL shortening capabilities.SharePoint 2010 Photo Gallery Spotlight: This sandboxed webpart displays images from a Picture Gallery and presents it in a visual representation modeled after jQuery Tools Scrollable projectSharp Tables: A hierarchical database package designed to efficiently manage very large amounts of data, in C#.simple is facebook: This is an android application that connect to Facebook Survival Engine: Small ActionScript-based game. Monsters, explosions, big guns (now small, but soon...) and very bad graphics mixed in this project. Join us and have fun :)Synthetic Transaction Monitoring Framework: provides infrastructure and tools for scheduling and executing synthetic user scenarios via Windows Azure. The World Around: Personal project to create a catalog of the most beautiful and popular places of the world.Vokabeltrainer App für Windows Phone 7.5: Der Link zur App kommt sobald die veröffentlicht ist.WillowTree# CKY: graohix updateded to reflect the main game images

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  • CodePlex Daily Summary for Thursday, June 21, 2012

    CodePlex Daily Summary for Thursday, June 21, 2012Popular ReleasesuComponents: uComponents v3.1.1: Continuing on from 84817, we are proud to announce our 3.1.1 release! The following issues have been resolved: 14640 14696 14704 14724 Please note: This release is not to be confused with the upcoming 80410 (which will support .NET 4.0)MVVM Light Toolkit: V4RTM (binaries only) including Windows 8 RP: This package contains all the latest DLLs for MVVM Light V4 RTM. It includes the DLLs for Windows 8 Release Preview. An updated Nuget package is also available at http://nuget.org/packages/MvvmLightLibs An installer with binaries, snippets and templates will follow ASAP.Weapsy - ASP.NET MVC CMS: 1.0.0: - Some changes to Layout and CSS - Changed version number to 1.0.0.0 - Solved Cache and Session items handler error in IIS 7 - Created the Modules, Plugins and Widgets Areas - Replaced CKEditor with TinyMCE - Created the System Info page - Minor changesAuto Proxy Configuration: Windows Proxy Setup V1.2: Bug FixesXDA ROM Hub: XDA ROM HUB v0.5: Added XRH Backup -- Backup & restore data, system and cache USE AT YOUR OWN RISK! - USE ONLY IN RECOVERY!AcDown????? - AcDown Downloader Framework: AcDown????? v3.11.7: ?? ●AcDown??????????、??、??????。????,????,?????????????????????????。???????????Acfun、????(Bilibili)、??、??、YouTube、??、???、??????、SF????、????????????。 ●??????AcPlay?????,??????、????????????????。 ● AcDown??????????????????,????????????????????????????。 ● AcDown???????C#??,????.NET Framework 2.0??。?????"Acfun?????"。 ????32??64? Windows XP/Vista/7/8 ??:????????Windows XP???,?????????.NET Framework 2.0???(x86),?????"?????????"??? ??????????????,??????????: ??"AcDown?????"????????? ...Apex: Apex 1.4: Apex 1.4Apex 1.4 provides a framework for rapid MVVM development. Download Apex 1.4 to get the core binaries, Visual Studio Extensions, Project Templates, Samples and Documentation. The 1.4 Release provides a vast number of enhancements via the Apex Broker. The Apex Broker is an object that can be used to retrieve models, get the view for a view model and more, much like an IoC container. The new Zune Style application templates for WPF and Silverlight give a great starting point for makin...NShader - HLSL - GLSL - CG - Shader Syntax Highlighter AddIn for Visual Studio: NShader 1.3 - VS2010 + VS2012: This is a small maintenance release to support new VS2012 as well as VS2010. This release is also fixing the issue The "Comment Selection" include the first line after the selection If the new NShader version doesn't highlight your shader, you can try to: Remove the registry entry: HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\11.0\FontAndColors\Cache Remove all lines using "fx" or "hlsl" in file C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\IDE\CommonExtensions\Micr...JSON Toolkit: JSON Toolkit 4.0: Up to 2.5x performance improvement in stringify operations Up to 1.7x performance improvement in parse operations Improved error messages when parsing invalid JSON strings Extended support to .Net 2.0, .Net 3.5, .Net 4.0, Silverlight 4, Windows Phone, Windows 8 metro apps and Xbox JSON namespace changed to ComputerBeacon.Json namespaceXenta Framework - extensible enterprise n-tier application framework: Xenta Framework 1.8.0: System Requirements OS Windows 7 Windows Vista Windows Server 2008 Windows Server 2008 R2 Web Server Internet Information Service 7.0 or above .NET Framework .NET Framework 4.0 WCF Activation feature HTTP Activation Non-HTTP Activation for net.pipe/net.tcp WCF bindings ASP.NET MVC ASP.NET MVC 3.0 Database Microsoft SQL Server 2005 Microsoft SQL Server 2008 Microsoft SQL Server 2008 R2 Additional Deployment Configuration Started Windows Process Activation service Start...ASP.NET REST Services Framework: Release 1.3 - Standard version: The REST-services Framework v1.3 has important functional changes allowing to use complex data types as service call parameters. Such can be mapped to form or query string variables or the HTTP Message Body. This is especially useful when REST-style service URLs with POST or PUT HTTP method is used. Beginning from v1.1 the REST-services Framework is compatible with ASP.NET Routing model as well with CRUD (Create, Read, Update, and Delete) principle. These two are often important when buildin...NanoMVVM: a lightweight wpf MVVM framework: v0.10 stable beta: v0.10 Minor fixes to ui and code, added error example to async commands, separated project into various releases (mainly into logical wholes), removed expression blend satellite assembliesMFCMAPI: June 2012 Release: Build: 15.0.0.1034 Full release notes at SGriffin's blog. If you just want to run the MFCMAPI or MrMAPI, get the executables. If you want to debug them, get the symbol files and the source. The 64 bit builds will only work on a machine with Outlook 2010 64 bit installed. All other machines should use the 32 bit builds, regardless of the operating system. Facebook BadgeMonoGame - Write Once, Play Everywhere: MonoGame 2.5.1: Release Notes The MonoGame team are pleased to announce that MonoGame v2.5.1 has been released. This release contains important bug fixes and minor updates. Recent additions include project templates for iOS and MacOS. The MonoDevelop.MonoGame AddIn also works on Linux. We have removed the dependency on the thirdparty GamePad library to allow MonoGame to be included in the debian/ubuntu repositories. There have been a major bug fix to ensure textures are disposed of correctly as well as some ...????: ????2.0.2: 1、???????????。 2、DJ???????10?,?????????10?。 3、??.NET 4.5(Windows 8)????????????。 4、???????????。 5、??????????????。 6、???Windows 8????。 7、?????2.0.1???????????????。 8、??DJ?????????。Azure Storage Explorer: Azure Storage Explorer 5 Preview 1 (6.17.2012): Azure Storage Explorer verison 5 is in development, and Preview 1 provides an early look at the new user interface and some of the new features. Here's what's new in v5 Preview 1: New UI, similar to the new Windows Azure HTML5 portal Support for configuring and viewing storage account logging Support for configuring and viewing storage account monitoring Uses the Windows Azure 1.7 SDK libraries Bug fixesCodename 'Chrometro': Developer Preview: Welcome to the Codename 'Chrometro' Developer Preview! This is the very first public preview of the app. Please note that this is a highly primitive build and the app is not even half of what it is meant to be. The Developer Preview sports the following: 1) An easy to use application setup. 2) The Assistant which simplifies your task of customization. 3) The partially complete Metro UI. 4) A variety of settings 5) A partially complete web browsing experience To get started, download the Ins...KangaModeling: Kanga Modeling 1.0: This is the public release 1.0 of Kanga Modeling. -Cosmos (C# Open Source Managed Operating System): Release 92560: Prerequisites Visual Studio 2010 - Any version including Express. Express users must also install Visual Studio 2010 Integrated Shell runtime VMWare - Cosmos can run on real hardware as well as other virtualization environments but our default debug setup is configured for VMWare. VMWare Player (Free). or Workstation VMWare VIX API 1.11AutoUpdaterdotNET : Autoupdate for VB.NET and C# Developer: AutoUpdater.NET 1.1: Release Notes New feature added that allows user to select remind later interval.New Projects.NET Heatmap: This is a simple project using C#, JQuery, and heatmap.js that allows you to create a heatmap for a web page using static data from a SQL database.Advanced Data Server: Advanced Data Server (ADS) is a library that enables you to create powerful server applications with little code.ARPAMISproject: This is an ambitious project that aims to provide an extensive business solution to schools, universities or any academic institutions alike. ArraySegments (by Stephen Cleary): Lightweight extension methods for ArraySegment<T>, particularly useful for byte arrays.Auto Proxy Configuration: This Tool sets proxy server automatically according to the DNSDomain.Bongiozzo Photosite: Simple photo site written using ASP.NET MVC 4.0 over Flickr API and Galleria image gallery framework. Cloud Media SharePoint Extension: With this extensions you can easily add media from the cloud like YouTube or Vimeo. Metadata from Vimeo or YouTube are also .and will be added tooContent Organizer Rule Manager SharePoint 2010: Create and manage content organizer rules faster for SharePoint 2010.Crm Customization Manager: Crm Customization Manager (CCM) by N.JL helps Dynamics CRM System Adiminstrators to easly Import Customisations and Treanslations with scheduling possibilitydemoHello: asp.net Ghost Puzzle: Protect your files with Ghost Puzzle.IonoWumpus: A simple Hunt the Wumpus implementation.LargeSky Personal Project: This a personal project, just for code place.Maze Game: Maze Game is a game for children/ computer beginners to practice the mouse movement with fun.NASM Develop IDE (The Open Source NASM Development Environment For Windows): A simple, light weight, all one in application that can help developers develop NASM applications in Windows without the need of remember fancy commands.Navigational: Gator brings navigation to projects built around life situations.Real Folders for Visual Studio: Real Folders for Visual Studio is a free plugin which makes Solution Folders map to real file system folders. With Real Folders you have the opportunity to organize your files in a simpler way than standard Visual Studio Solution Folders behave (completely uncommited to any folder on your file system). SaltFx: SaltFx is an N-Layered Domain Driven Design (DDD) framework for .NET development.SharePoint Location-Based Weather Webpart: Uses UPS information to display local weather for the user via the Yahoo Weather service.SharePoint Publishing: The Project is aimed at supplying Publishers with tools & design elements to provide a means of publishing through SharePoint.SpellLight - Lightweight Silverlight Spell Checker Library: SpellLight is a lightweight Silverlight Spell Check librarySUDOKU APP: NoneTrainer: This is an application used for logging runs, nutrition, weight, and other goals.weibospace: An ios projecct

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  • Verification of UML Class Diagram

    - by Jean Carlos Suárez Marranzini
    This is my UML Class Diagram made in Astah Community, for a tennis scoreboard game. Here's a link to the image (I don't have enough rep to post images): http://i47.tinypic.com/2lsxx90.png Points are calculated based on moves. Moves can be either points (for the player's advantage) or errors (for the opponent's advantage). The Time Machine allows you to travel to previous game states (expressed as scoreboards). The storage component should be able to store matches independently of the serialization format. The serializers and deserializers should be able to do their job regardless of where the storage lies. The GameEngine should be able to apply the rules of the game regardless of the particularities of the game (hence, dependency injection through the Settings class). The outcomes of games, sets and matches should be deducible based on the points and the rules to apply (the logic implementations are there to provide the rules). Could you please verify my design and tell me if there's anything wrong with it? Thanks in advance.

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  • Jagran Prakashan Increases Staff Productivity by 40%

    - by Michael Snow
    Jagran Prakashan Increases Staff Productivity by 40%, Launches New IT Projects up to 4x Faster, Enables Mobile Service, and Improves Business Agility Oracle Customer: JPL Location:  Uttar Pradesh, India Industry: Media and Entertainment Employees:  10,000 Annual Revenue:  $100 to $500 Million Jagran Prakashan Ltd. (JPL) is one of India's premier media and communications groups with interests spanning print, advertising, event management, and mobile services for weather, cricket scores, and educational activities. It is a major media enterprise, with 300 locations across 15 states. Its impressive stable of print publications includes Dainik Jagran, the world’s most widely read daily newspaper––with a readership of over 55 million––the country’s leading afternoon dailies, and a range of popular local, bilingual, and English language newspapers. JPL was using multiple systems to manage its business processes. Users were resistant to using multiple passwords for various applications, preferring to continue their less efficient, legacy work practices. In addition, there was no single repository for sharing documents across the organization, such as company announcements or project documents. The company relied on e-mail to disseminate up-to-date company information, often missing employees. It was also time-consuming and difficult for managers to track the status of ongoing assignments or projects because collaboration and document sharing was inefficient and ineffective.With diverse businesses and many geographic locations, JPL needed to implement a centralized and user-friendly enterprise portal to improve document sharing and collaboration and increase business agility. The company implemented Oracle WebCenter Portal to create a dynamic, secure, and intuitive self-service enterprise portal to improve the user experience and increase operating efficiency. It improved staff productivity by 40%, accelerated new IT projects by up to 4x, boosted staff morale, and increased business agility.   Increases Staff Productivity by 40%, Launches New Products up to 2x Faster A word from JPL "With Oracle WebCenter Portal, we gained a dynamic, secure, and intuitive self-service enterprise portal that provided an exceptional user experience and enabled us to engage employees in a collaborative environment. It increased IT staff productivity by 40%, delivered new projects up to 4x faster, and enabled mobile service to improve our business agility.” Sarbani Bhatia, Vice President IT, Jagran Prakashahn Ltd Before implementing Oracle WebCenter Portal, JPL stored project-critical information, such as page planning of daily newspaper editions and the launch of new editions or supplements on individual laptops or in the e-mail system. Collaboration between colleagues was limited to physical meetings, telephone discussions, and e-mail. It was difficult to trace and recover important project documents when a staff member resigned, which represented a significant risk to business continuity. Employees were also averse to multiple passwords and resisted using the systems, affecting staff productivity. With Oracle WebCenter Portal, JPL created a dynamic, secure, and intuitive self-service enterprise portal with business activity streams. The portal allowed users to navigate, discover, and access information, such as advertising rates, requisition approvals, ad-hoc queries, and employee surveys from a single entry point with a single password. Managers can also upload important documents, such as new pricing for advertisers or newspaper distributors, and share them through the information and instruction section in the portal. In addition, managers can now easily track and review timelines for projects online rather than gathering information from meetings and e-mails. The company gained the ability to centrally manage information, ensured business continuity, and improved staff productivity by 40%.“In the media industry, news has a very short shelf life, so speed is crucial. Information delayed is like information lost,” said Sarbani Bhatia, vice president IT, Jagran Prakashahn Ltd. “Thanks to Oracle WebCenter Portal’s contextual collaboration tools, we can provide and share feedback for new project launches, such as career or education supplements, up to 2x faster through discussion forums or knowledge groups. Tasks that previously required four months, we now complete in one month.”In addition, the company can broadcast announcements, flash employee birthdays, and promote important events through the message section on the webpage, instead of using the e-mail system. The company can also conduct opinion polls to gauge employee response to organizational issues and improve management decision-making.“With over 10,000 employees across 300 locations, it is critical for management to hear the voice of employees and develop a cohesive organizational culture. Oracle WebCenter Portal enables employees to engage with business processes and systems in a collaborative environment, providing users with an exceptional experience,” Bhatia said. Enables Mobility Access and Increases Business Agility Newspaper advertisements generate the majority of JPL’s revenue. With most sales staff on the move, the company needed to ensure timely approval of print advertisement discounts for specific clients and meet tight publication deadlines.  By integrating Oracle WebCenter Portal seamlessly with its enterprise resource planning (ERP) system and other applications, such as the organizational mass mailing system, business intelligence, and management information system, JPL embedded its approval workflow processes into the enterprise portal and provided users with an integrated and intuitive interface. About 30% of JPL’s sales staff members now have tablets and receive advertising discount approval from managers while in the field and no longer need to return to the office, which has significantly improved efficiency and increased business agility.“Application mobility was critical for sales representatives in the field to meet stringent auditing requirements for online accountability, particularly for our newspaper advertising business. Staff member satisfaction has improved significantly now that the sales team can use tablets to access the portal––a capability we will extend to smart phones in the second stage of the implementation,” Bhatia said. Accelerates Application Development by up to 4x and Cuts Costs by up to 60% With Oracle WebCenter Portal, users can easily create, modify, and upload information to their personalized webpages without IT assistance. By seamlessly integrating Oracle WebCenter Portal with the payroll database, managers can decide which members of their team can access the page and with whom they will share information, a decision based on role or geographical location. A sales representative selling advertising space for a local language daily newspaper, for example, can upload an updated advertising rate relevant only to that particular publication. Users can also easily adapt to the new platform, thanks to its intuitive design and look, reducing the need for training and lowering resistance to using the system.Using Oracle WebCenter Portal’s out-of-the-box reusable components, such as portal pages and templates, provided JPL’s developers with a comprehensive and flexible user experience platform and increased the speed of application development. In less than five months, JPL developed more than 55 workflows. The IT team accelerated deployment of new applications by up to 4x, as they do not need to install them on individual machines now that they have a web-based environment.   “Previously, we would have spent a whole day deploying a new application for each department or location. With a browser-based environment, we have cut costs by up to 60% by reducing deployment time to zero, because our IT team can roll out a new application from a single point, thanks to Oracle WebCenter Portal,” Bhatia said. Challenges Provide a dynamic, secure, and intuitive self-service enterprise portal to improve staff productivity and ensure business continuity Enable seamless integration with multiple enterprise applications to improve workflow efficiency—including approval of print advertisement discounts—and increase business agility Improve engagement with employees and enable collaboration to enhance management decision-making Accelerate time-to-market for new services, such as new advertising programs Solutions Oracle Product and ServicesOracle WebCenter Portal 11g Increased staff productivity by 40% and enhanced user satisfaction by enabling employees to easily navigate, discover, and access information from a single, self-service enterprise portal without IT assistance Launched new products, such as career or education supplements, up to 2x faster by enabling peer collaboration and incorporating feedback generated through discussion forums, thanks to Oracle WebCenter Portal’s out-of-the-box collaboration tools Accelerated application development up to 4x by enabling developers to optimize reusable components for managing and deploying new applications in a browser-based environment rather than spending one day to install applications for each department, cutting costs by up to 60% Ensured business continuity by enabling managers to easily track and review project timelines online rather than storing important documents on individual laptops or relying on the e-mail system Increased business agility and operational efficiency by seamlessly integrating with the in-house, ERP system and embedding business processes into a single portal Boosted company revenue by enabling sales team members to submit print-advertising discount requests through mobile devices instead of waiting to return to office, ensuring timely approval from managers to meet tight publication deadlines Improved management decision-making by enabling employees to easily share and access feedback through opinion polls or forums, boosting staff morale Introduced the single sign-on capability and enhanced security by enabling managers to decide access level for staff members based on role or geographical location Reduced the need for staff training and minimized user resistance to systems by providing a dynamic and intuitive user experience Why Oracle JPL did not consider other products because the company was already using Oracle Database, Enterprise Edition with Real Application Clusters and had a positive experience with Oracle. JPL chose Oracle WebCenter Portal to ensure no compatibility issues for integration with its existing Oracle products and to take advantage of the experience and support of a reputable vendor to ensure business continuity. “We chose Oracle because we knew we could rely on its support and experience. In addition, Oracle WebCenter Portal’s speed, agility, and mobile access features were a perfect fit for our business requirements,” Bhatia said. Implementation Process JPL launched the enterprise portal to 500 users in the first phase of the project, and plans to extend this to 2,000 users when the portal is fully launched. Oracle partner PricewaterhouseCoopers used Oracle Application Development Framework for the intial set-up, user training and to develop and design sample workflows. JPL’s internal IT staff then took charge of the implementation, bringing it to completion on budget. Partner Oracle PartnerPricewaterhouseCoopers (India)

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  • Why, on iOS, is glRenderbufferStorage appearing to fail?

    - by dugla
    On an iOS device (iPad) I decided to change the storage for my renderbuffer from the CAEAGLLayer that backs the view to explicit storage via glRenderbufferStorage. Sadly, the following code fails to result in a valid FBO. Can someone please tell me what I missed?: glGenFramebuffers(1, &m_framebuffer); glBindFramebuffer(GL_FRAMEBUFFER, m_framebuffer); glGenRenderbuffers(1, &m_colorbuffer); glBindRenderbuffer(GL_RENDERBUFFER, m_colorbuffer); GLsizei width = (GLsizei)layer.bounds.size.width; GLsizei height = (GLsizei)layer.bounds.size.height; glRenderbufferStorage(m_colorbuffer, GL_RGBA8_OES, width, height); glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, m_colorbuffer); Note: The layer size is valid and correct. This is solid production working rendering code. The only change I am making is the line glRenderbufferStorage(...) previously I did: [m_context renderbufferStorage:GL_RENDERBUFFER fromDrawable:layer] Thanks, Doug

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  • Windows Azure Diagnostics: Next to Useless?

    - by Your DisplayName here!
    To quote my good friend Christian: “Tracing is probably one of the most discussed topics in the Windows Azure world. Not because it is freaking cool – but because it can be very tedious and partly massively counter-intuitive.” <rant> The .NET Framework has this wonderful facility called TraceSource. You define a named trace and route that to a configurable listener. This gives you a lot of flexibility – you can create a single trace file – or multiple ones. There is even nice tooling around that. SvcTraceViewer from the SDK let’s you open the XML trace files – you can filter and sort by trace source and event type, aggreate multiple files…blablabla. Just what you would expect from a decent tracing infrastructure. Now comes Windows Azure. I was already were grateful that starting with the SDK 1.2 we finally had a way to do tracing and diagnostics in the cloud (kudos!). But the way the Azure DiagnosticMonitor is currently implemented – could be called flawed. The Azure SDK provides a DiagnosticsMonitorTraceListener – which is the right way to go. The only problem is, that way this works is, that all traces (from all sources) get written to an ETW trace. Then the DiagMon listens to these traces and copies them periodically to your storage account. So far so good. But guess what happens to your nice trace files: the trace source names get “lost”. They appear in your message text at the end. So much for filtering and sorting and aggregating (regex #fail or #win??). Every trace line becomes an entry in a Azure Storage Table – the svclog format is gone. So much for the existing tooling. To solve that problem, one workaround was to write your own trace listener (!) that creates svclog files inside of local storage and use the DiagMon to copy those. Christian has a blog post about that. OK done that. Now it turns out that this mechanism does not work anymore in 1.3 with FullIIS (see here). Quoting: “Some IIS 7.0 logs not collected due to permissions issues...The root cause to both of these issues is the permissions on the log files.” And the workaround: “To read the files yourself, log on to the instance with a remote desktop connection.” Now then have fun with your multi-instance deployments…. </rant>

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  • The August '14 Oracle Virtualization Newsletter is Now Available

    - by Chris Kawalek
    The August 2014 edition of the Oracle Virtualization Newsletter is now available! You can catch up on what's been going on with Oracle VM, Oracle Secure Global Desktop, and Oracle VM VirtualBox by reading the latest issue. Here are some highlights: Oracle Announces Oracle VM 3.3 Release Technology Preview of OpenStack Icehouse with Oracle Linux and Oracle VM Now Available Getting Started with Oracle VM, Oracle Linux, and OpenStack Oracle VM Test Drive Workshop on Cisco UCS Updated Oracle VM Storage Connect Plug-in for Oracle ZFS Storage Appliance Now Available Controlled Remote Access with Oracle Secure Global Desktop and amitego VISULOX And much more! You can read the latest edition online right now or sign up to get it automatically delivered to your inbox.

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  • ARM cortex: mutex using bit banding

    - by Jeff V
    Given that, on the ARM Cortex M3, I can: atomically read a single bit atomically set a single bit atomically clear a single bit How can I combine these for a mutex style set of operations: try lock take lock release lock It seems that try_lock or take_lock would require two operations that would not be atomic. Do I need more control to accomplish this? Disable global interrupts would do it but it seems there should be a more surgical approach.

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  • NHibernate mapping one table on two classes with where selection

    - by Rene Schulte
    We would like to map a single table on two classes with NHibernate. The mapping has to be dynamically depending on the value of a column. Here's a simple example to make it a bit clearer: We have a table called Person with the columns id, Name and Sex. The data from this table should be mapped either on the class Male or on the class Female depending on the value of the column Sex. In Pseudocode: create instance of Male with data from table Person where Person.Sex = 'm'; create instance of Female with data from table Person where Person.Sex = 'f'; The benefit is we have strongly typed domain models and can later avoid switch statements. Is this possible with NHibernate or do we have to map the Person table into a flat Person class first? Then afterwards we would have to use a custom factory method that takes a flat Person instance and returns a Female or Male instance. Would be good if NHibernate (or another library) can handle this.

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  • Merging two templates in iText

    - by Shaggy Frog
    Let's say I have two PDF templates created with Adobe Acrobat, which are both single-page, 8.5x11 documents. The first template (A.pdf) has content for the top half of the page. The second template (B.pdf) has content for the bottom half of the page. (It just so happens the content in both templates does not "overlap" each other.) I would like to use iText to take these two templates and create a single, "merged" template from it (C.pdf) that is only a single page (with A.pdf's content on the top half and B.pdf's content on the bottom half). (I do not want to "merge" these two files into a 2-page document. I need the final product to be a single page.) I will be running iText in a servlet environment (Tomcat 6) but I don't think that makes a difference to the answer. Is this possible?

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  • How to delay static initialization within a property

    - by Mystagogue
    I've made a class that is a cross between a singleton (fifth version) and a (dependency injectable) factory. Call this a "Mono-Factory?" It works, and looks like this: public static class Context { public static BaseLogger LogObject = null; public static BaseLogger Log { get { return LogFactory.instance; } } class LogFactory { static LogFactory() { } internal static readonly BaseLogger instance = LogObject ?? new BaseLogger(null, null, null); } } //USAGE EXAMPLE: //Optional initialization, done once when the application launches... Context.LogObject = new ConLogger(); //Example invocation used throughout the rest of code... Context.Log.Write("hello", LogSeverity.Information); The idea is for the mono-factory could be expanded to handle more than one item (e.g. more than a logger). But I would have liked to have made the mono-factory look like this: public static class Context { private static BaseLogger LogObject = null; public static BaseLogger Log { get { return LogFactory.instance; } set { LogObject = value; } } class LogFactory { static LogFactory() { } internal static readonly BaseLogger instance = LogObject ?? new BaseLogger(null, null, null); } } The above does not work, because the moment the Log property is touched (by a setter invocation) it causes the code path related to the getter to be executed...which means the internal LogFactory "instance" data is always set to the BaseLogger (setting the "LogObject" is always too late!). So is there a decoration or other trick I can use that would cause the "get" path of the Log property to be lazy while the set path is being invoked?

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  • How to install Visual Python?

    - by user214152
    I'm a Linux newbie but I'm determined to get my favorite applications on my laptop running Ubuntu 12.04. I just installed Cinnamon. I'm trying to install Visual Python and it requires Python 2.7. I followed the instructions on the VPython site but the Wine application isn't extracting anything from the Python .msi file. From the first line wine start /i python-2.7.5.amd64.msi /qn TARGETDIR=~/Python27 ALLUSERS=1 it says fixme:storage:create_storagefile Storage share mode not implemented. I created that Python27 directory so I know it exists and it's empty. I know Ubuntu already has Python 2.7 so I just tried running the VPython.exe file but it says "This program can only be installed on versions of Windows designed for the following processor architectures: x64." My Toshiba satellite has a 64-bit processor. Could anybody help?

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  • SharePoint 2010, Cloud, and the Constitution

    - by Michael Van Cleave
    The other evening an article on the Red Tap Chronicles caught my eye. The article written by Bob Sullivan titled "The Constitutional Issues of Cloud Computing" was very interesting in regards to the direction most of the technical world is going. We all have been inundated about utilizing cloud computing for reasons of price, availability, or even scalability; but what Bob brings up is a whole separate view of why a business might not want to move toward the cloud for services or applications. The overall point to the article was pretty simple. It all boiled down to the summation that hosting "Things" in the cloud (Email, Documents, etc…) are interpreted differently under the law regarding constitutional search and seizure than say a document or item that is kept in physical form at a business or home. Where if you physically have it stored someone would have to get a warrant to search for it or seize it, but if it is stored off in the cloud and the ISV or provider is subpoenaed for the item then they will usually give access to the information. Obviously this is a big difference in interpretation of the law and the constitution due to technology. So you might ask "Where does this fit in with SharePoint? Well the overall push for this next version of SharePoint is one that gives a business ultimate flexibility to utilize the Cloud. In one example this upcoming version gracefully lends itself to Multi Tenancy so that online or "Cloud" hosting would be possible by Service Providers. Another aspect to the upcoming version is that it has updated its ability to store content outside of the database and in a cheaper commoditized storage facility. This is called Remote Blob Storage (or RBS) which is the next evolution of External Blob Storage (or EBS). With this new functionality that business might look forward to it is extremely important for them to understand that they might be opening themselves up to laws that do not need a warrant to search or seize their information that is stored in the cloud. It will be interesting to see how this all plays out in the next few months. Usually the laws change slowly in comparison to technology so it might be a while until we see if it is actually constitutional to treat someone's content on the cloud differently as it would be in their possession, however until there is some type of parity that happens or more concrete laws regarding the differences be very careful about what you put in the cloud. Michael

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  • why sitecolumn title is blank after feature activation....

    - by Rosh Malai
    After installing using stsadmin, and activating using site UI "Site Collection Feature" these columns shows up but no title is showing for them. So no link is attached. It looks like this. Site Column Type Source Car Custom Columns Single line of text SiteCol1 Single line of text SiteCol1 Single line of text SiteCol1 Date and Time SiteCol1 here is feature.xml here is elements.xml StaticName="Car_VinNumber" xmlns="http://schemas.microsoft.com/sharepoint/"

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  • What is the basic pattern for using (N)Hibernate?

    - by Vilx-
    I'm creating a simple Windows Forms application with NHibernate and I'm a bit confused about how I'm supposed to use it. To quote the manual: ISession (NHibernate.ISession) A single-threaded, short-lived object representing a conversation between the application and the persistent store. Wraps an ADO.NET connection. Factory for ITransaction. Holds a mandatory (first-level) cache of persistent objects, used when navigating the object graph or looking up objects by identifier. Now, suppose I have the following scenario: I have a simple classifier which is a MSSQL table with two columns - ID (auto_increment) and Name (nvarchar). To edit this classifier I create a form which contains a single gridview and two buttons - OK and Cancel. The user can nearly directly edit the table in the gridview, and when he hits OK the changes he made are persisted to the DB (or if he hits cancel, nothing happens). Now, I have several questions about how to organize this: What should the lifetime of my ISession be? Should I create a single ISession for my whole application; an ISession for each of my forms (the application is single-threaded MDI); or an ISession for every DB operation/transaction? Does NHibernate offer some kind of built-in dirty tracking or must I do this myself? The manual mentions something like it here and there but does not go into details. How is this done? Is there not a huge overhead? Is it somehow tied with the cache(s) that NHibernate has? What are these caches for? Are they not specific to a single ISession? That is, if I use a seperate ISession for every transaction, won't it break the dirty tracking? How does the built-in dirty tracking detect deleted objects?

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  • Referring to the type of an inner class in Scala

    - by saucisson
    The following code tries to mimic Polymorphic Embedding of DSLs: rather than giving the behavior in Inner, it is encoded in the useInner method of its enclosing class. I added the enclosing method so that user has only to keep a reference to Inner instances, but can always get their enclosing instance. By doing this, all Inner instances from a specific Outer instance are bound to only one behavior (but it is wanted here). abstract class Outer { sealed class Inner { def enclosing = Outer.this } def useInner(x:Inner) : Boolean } def toBoolean(x:Outer#Inner) : Boolean = x.enclosing.useInner(x) It does not compile and scala 2.8 complains about: type mismatch; found: sandbox.Outer#Inner required: _81.Inner where val _81:sandbox.Outer From Programming Scala: Nested classes and A Tour of Scala: Inner Classes, it seems to me that the problem is that useInnerexpects as argument an Inner instance from a specific Outer instance. What is the true explanation and how to solve this problem ?

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  • The Linux powered LAN Gaming House

    - by sachinghalot
    LAN parties offer the enjoyment of head to head gaming in a real-life social environment. In general, they are experiencing decline thanks to the convenience of Internet gaming, but Kenton Varda is a man who takes his LAN gaming very seriously. His LAN gaming house is a fascinating project, and best of all, Linux plays a part in making it all work.Varda has done his own write ups (short, long), so I'm only going to give an overview here. The setup is a large house with 12 gaming stations and a single server computer.The client computers themselves are rack mounted in a server room, and they are linked to the gaming stations on the floor above via extension cables (HDMI for video and audio and USB for mouse and keyboard). Each client computer, built into a 3U rack mount case, is a well specced gaming rig in its own right, sporting an Intel Core i5 processor, 4GB of RAM and an Nvidia GeForce 560 along with a 60GB SSD drive.Originally, the client computers ran Ubuntu Linux rather than Windows and the games executed under WINE, but Varda had to abandon this scheme. As he explains on his site:"Amazingly, a majority of games worked fine, although many had minor bugs (e.g. flickering mouse cursor, minor rendering artifacts, etc.). Some games, however, did not work, or had bad bugs that made them annoying to play."Subsequently, the gaming computers have been moved onto a more conventional gaming choice, Windows 7. It's a shame that WINE couldn't be made to work, but I can sympathize as it's rare to find modern games that work perfectly and at full native speed. Another problem with WINE is that it tends to suffer from regressions, which is hardly surprising when considering the difficulty of constantly improving the emulation of the Windows API. Varda points out that he preferred working with Linux clients as they were easier to modify and came with less licensing baggage.Linux still runs the server and all of the tools used are open source software. The hardware here is a Intel Xeon E3-1230 with 4GB of RAM. The storage hanging off this machine is a bit more complex than the clients. In addition to the 60GB SSD, it also has 2x1TB drives and a 240GB SDD.When the clients were running Linux, they booted over PXE using a toolchain that will be familiar to anyone who has setup Linux network booting. DHCP pointed the clients to the server which then supplied PXELINUX using TFTP. When booted, file access was accomplished through network block device (NBD). This is a very easy to use system that allows you to serve the contents of a file as a block device over the network. The client computer runs a user mode device driver and the device can be mounted within the file system using the mount command.One snag with offering file access via NBD is that it's difficult to impose any security restrictions on different areas of the file system as the server only sees a single file. The advantage is perfomance as the client operating system simply sees a block device, and besides, these security issues aren't relevant in this setup.Unfortunately, Windows 7 can't use NBD, so, Varda had to switch to iSCSI (which works in both server and client mode under Linux). His network cards are not compliant with this standard when doing a netboot, but fortunately, gPXE came to the rescue, and he boostraps it over PXE. gPXE is also available as an ISO image and is worth knowing about if you encounter an awkward machine that can't manage a network boot. It can also optionally boot from a HTTP server rather than the more traditional TFTP server.According to Varda, booting all 12 machines over the Gigabit Ethernet network is surprisingly fast, and once booted, the machines don't seem noticeably slower than if they were using local storage. Once loaded, most games attempt to load in as much data as possible, filling the RAM, and the the disk and network bandwidth required is small. It's worth noting that these are aspects of this project that might differ from some other thin client scenarios.At time of writing, it doesn't seem as though the local storage of the client machines is being utilized. Instead, the clients boot into Windows from an image on the server that contains the operating system and the games themselves. It uses the copy on write feature of LVM so that any writes from a client are added to a differencing image allocated to that client. As the administrator, Varda can log into the Linux server and authorize changes to the master image for updates etc.SummaryOverall, Varda estimates the total cost of the project at about $40,000, and of course, he needed a property that offered a large physical space in order to house the computers and the gaming workstations. Obviously, this project has stark differences to most thin client projects. The balance between storage, network usage, GPU power and security would not be typical of an office installation, for example. The only letdown is that WINE proved to be insufficiently compatible to run a wide variety of modern games, but that is, perhaps, asking too much of it, and hats off to Varda for trying to make it work.

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  • Making profit from a social network

    - by James P.
    This follows similar questions but I'd like to see if anything particular comes out of it due to the nature of site. In short, I've taken up the role of webmaster for a small social network site and wish to make it profitable to at least cover the running costs. The site is linked to a commerce and presents are offered to members according to the number of points they've accumulated through various actions. The site is running on shared hosting so it's probably dirt cheap but the presents can be expensive as a whole and some money has already been invested into the project. One idea I have is to seek some sponsors that would be willing to offer presents or special offers in return for publicity. I don't know if this will be easy or not. I'm also looking into adapting hosting to perhaps move static files to a cheaper online storage medium (see Ideas for reducing storage needs and/or costs (lots of images)). Other suggestions are welcome.

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