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• .NET mulithreading and quad core processors

  - by w0051977

  I have a single threaded application that runs on a machine with a quad core processor. The scheduled tasks that run VB.NET forms are too slow. I am new to multi threading and parallel computing. If you have a single threaded application that runs on a server with a multi core processor then does the application only ever use one of the processors? What happens if you have multiple scheduled tasks and multiple instances are in memory at the same time? I have read this question on Stackoverflow: http://stackoverflow.com/questions/607775/how-to-write-net-applications-that-utilize-multi-core-processors, but I am still not clear.

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• E-mail solution recommedation?

  - by Brownsithily Smith

  Do you currently use email marketing as part of your online marketing strategy to new prospects,customers & clients? If yes: What is your single biggest problem/challenge with email marketing? What is your single most important question about email marketing? If no: What is stopping you? Do you plan to go on your email marketing for online business & ecommerce? Any experience or recommendation?

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• Should I use my domain registrar's nameserver or find an alternative?

  - by Fazal

  I've recently been moving my client's sites as well as my own and my friends to a cloud server instance I've set up. I don't have a nameserver setup on my instance because I'm not sure how to deploy and manage that side of things yet. I'm using the default nameservers where possible for the sites and just changing the A record DNS settings to point at the server. Some clients are complaining that the sites are running slower then before (since I changed nameservers back to the defaults). Some of the domain registrars are a nightmare to deal with and I can't convince some of my clients to leave them. Is there a sort of paid service I can use instead?

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• How Byte loading/storing is implemented By the CPU?

  - by AlexDan

  I know that in 32bit machine, cpu read from memory 32bits at a time. since the registers in this case is 32bit in size too, I can understand how this works. What I don't understand is how the cpu implement load instructions of 1 byte. does it load the whole word where the single byte is located to the register, then perform some kind of "byte shifting", or does the cpu can load a single byte, in this case when does the byte masking happen, is it until the byte got loaded in the register, or it happen when byte is send through the data bus ? P.S. The cpu Im using is MIPS, the instructions Im talking about are: lb or lbu

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• Confusion on HLSL Samplers. Can I Set Samplers Inside Functions?

  - by Kyle Connors

  I'm trying to create a system where I can instance a quad to the screen, however I've run into a problem. Like I said, I'm trying to instance the quad, so I'm trying to use the same geometry several times, and I'm trying to do it in one draw call. The issue is, I want some quads to use different textures, but I can't figure out how to get the data into a sampler so I can use it in the pixel shader. I figured that since we can simply pass in the 4 bytes of our IDirect3DTexture9* to set the global texture, I can do so when passing in my dynamic buffer. (Which also stores each objects world matrix and UV data) Now that I'm sending the data, I can't figure how to get it into the sampler, and I really want to assume that it's simply not possible. Is there any way I could achieve this?

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• New MyOracleSupport (MOS)Interface Coming 13 July 2012

  - by user793553

  On July 13, 2012, we plan to upgrade the My Oracle Support HTML-based user interface (UI) with additional functionality that will allow those users remaining on the Flash-based user interface to switch over to the HTML version. Our goal is to provide a single-online support portal so that all My Oracle Support users can benefit from the same features and functionality. Prior to July 13, 2012, users of Oracle On Demand, Oracle CRM On Demand, Taleo, and Oracle Configuration Manager should continue accessing the My Oracle Support Flash-based user interface. After July 13, 2012, the above features and functionality to support these users will be available on the HTML interface. All other users of My Oracle Support can make the switch now. Benefits of using the HTML-based user interface include: Streamlined, three-step process for initiating new Service Requests (SRs) Single, consistent workflow for both hardware and software incidents Enhanced personalization and filtering within the user interface New accessibility features (enabling screen readers, large fonts, etc.) Additionally, please note Internet Explorer 6 (IE6) will no longer be supported. For further information, please check Doc ID 1385682.1

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• How to script a reinstall (apt repo's and installed packages)

  - by Kurtosis

  I need to wipe my hard drive and reinstall Ubuntu. /home is on a separate partition, so I can back that up to a backup drive, then copy it back to the wiped drive, install ubuntu, and point it at the existing /home, no problem. However, I also want to script a reinstall of all my apt repo's and the packages I currently have installed, so I don't have to waste hours doing that manually. Anyone know a good way to do this? PS - At least, I'm pretty sure I have to wipe the drive. Need to install Windows 7, and only have an HP system restore disk that formats the whole drive, and not a legit Windows 7 install disk that lets me install on a single partition. If somebody know a way to trick the system restore disk to install only to a single partition, I'd love to hear it.

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• How can I work out how many IP addresses there are in a given range?

  - by Jarede

  I'm wondering if there is a formula to work out the amount of IP addresses in a given range. I have a system that takes either a single IP address or a start and and end IP address: A single one might be: 145.16.23.241 A range might be: 145.16.23.122 - 145.16.23.144 The people inputting these aren't technical, nor are they receiving these details from technical people, so suggesting using CIDR notation isn't an answer for me. I want to be able to highlight that when entering a range such as: 122.100.10.12 - 128.10.200.140 it might not actually be a range and rather 2 singular IP addresses since such a range would comprise of x (large number of) IP addresses. Is there a basic formula to help me highlight this?

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• What issues are there for doing freelance work?

  - by Telos

  I'm considering doing some contract work on the side of my normal job. I know that it will kill my free time, but I figure I can control when I'm doing projects and then get a little extra money or even eventually make it my full time job. But as I've never done this before, I'm wondering what issues people face to do this kind of work. For instance: how do you find customers? What difficulties do you normally face on a project? How do you deal with projects that are too large for one programmer to effectively complete? What about projects that need other skill sets (for instance web design for a web app?)

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• Windows: starting sqlplus in new window from cygwin bash

  - by katsumii

  When I start sqlplus, more often than not, I want it to start in new window,whether it be on Linux/Solaris GNOME or Windows.I seldom use GNOME so I never bothered to figure out how.On Windows, one can use Windows menu or Win+R "Run" dialog but I prefer usingbash. Because, this way, I can keep the history in ~/.bash_history file.There are 2 ways. Using cmd.exe or cygstart.For example, to start default sqlplus.exe to connect to default local instance. $ cmd /c "start sqlplus sys/oracle as sysdba" 2nd example. To start sqlplus in 2nd Oracle home and to connect to non-default local instance. $ ORACLE_SID=orcl cygstart /cygdrive/g/app/product/11.2.0.3/dbhome_1/BIN/sqlplus scott I hope this tip helps reducing your DBA time.

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• Displaying a Sorted, Paged, and Filtered Grid of Data in ASP.NET MVC

  Over the past couple of months I've authored five articles on displaying a grid of data in an ASP.NET MVC application. The first article in the series focused on simply displaying data. This was followed by articles showing how to sort, page, and filter a grid of data. We then examined how to both sort and page a single grid of data. This article looks at how to add the final piece to the puzzle: we'll see how to combine sorting, paging and filtering when displaying data in a single grid. Like with its predecessors, this article offers step-by-step instructions and includes a complete, working demo available for download at the end of the article. Read on to learn more! Read More >

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• Which torrent client has command line arguments to start/stop downloads?

  - by virpara

  first of all, I want to create shell script to start/stop downloads in torrent client. I don't need CLI but if you know how I can do that with CLI using shell script then it is okay. I use jDownloader which is GUI based application but has some command line arguments as below which I use to start/stop download. -h/--help Show this help message -a/--add-link(s) Add links -co/--add-container(s) Add containers -d/--start-download Start download -D/--stop-download Stop download -H/--hide Don't open Linkgrabber when adding Links -m/--minimize Minimize download window -f/--focus Get jD to foreground/focus -s/--show Show JAC prepared captchas -t/--train Train a JAC method -r/--reconnect Perform a Reconnect -C/--captcha <filepath or url> <method> Get code from image using JAntiCaptcha -p/--add-password(s) Add passwords -n --new-instance Force new instance if another jD is running So I can easily start/stop download as follows, jdownloader --start-download jdownloader --stop-download now I want torrent client to do that through shell script.

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• WP: Oracle Multitenant on SuperCluster T5-8: Study of Database Consolidation Efficiency

  - by uwes

  Consolidation in the data center is the driving factor in reducing capital and operational expense in IT today. This is particularly relevant as customers invest more in cloud infrastructure and associated service delivery. Database consolidation is a strategic component in this effort. Oracle Database 12 c introduces Oracle Multitenant , a new database consolidation model in which multiple Pluggable Databases (PDBs) are consolidated within a Container Database (CDB). While keeping many of the isolation aspects of single databases, it allows PDBs to share the system global area (SGA) and background processes of a common CDB . The white paper recently published on OTN: Oracle Multitenant on SuperCluster T5-8: Study of Database Consolidation Efficiency analyzes and quantifies savings in compute resources, efficiencies in transaction processing, and consolidation density of Oracle Multitenant compared to consolidated single instance databases (SIDBs) running in a bare-metal environment.

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• Coherence Query Performance in Large Clusters

  - by jpurdy

  Large clusters (measured in terms of the number of storage-enabled members participating in the largest cache services) may introduce challenges when issuing queries. There is no particular cluster size threshold for this, rather a gradually increasing tendency for issues to arise. The most obvious challenges are that a client's perceived query latency will be determined by the slowest responder (more likely to be a factor in larger clusters) as well as the fact that adding additional cache servers will not increase query throughput if the query processing is not compute-bound (which would generally be the case for most indexed queries). If the data set can take advantage of the partition affinity features of Coherence, then the application can use a PartitionedFilter to target a query to a single server (using partition affinity to ensure that all data is in a single partition). If this can not be done, then avoiding an excessive number of cache server JVMs will help, as will ensuring that each cache server has sufficient CPU resources available and is also properly configured to minimize GC pauses (the most common cause of a slow-responding cache server).

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• Material usage, one per model or per object?

  - by WSkid

  Is it better (memory, time (of developer), space) to use single model that is unwrapped and uses a single material or to break a model down into appropriate bits, each with their own smaller texture/material? Or does it depend on the target platform as to what is acceptable - ie PC vs tablet? An example: Say you have a typical house with a tiled roof. Model it, make sure everything is attached, unwrap the walls/roof so in your UV template the walls and roof would be in one texture file, side-by-side in say a 512x512 file. Model the roof/walls as separate objects, unwrap them individually and have two UV templates. You could then have a 256x256 file for each one.

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• Highlighting new rows in ADF Table

  - by Sireesha Pinninti

  About This article explains how to hightlight newly inserted rows in an ADF Table without writing any extra java/javascript code.IntroductionSometimes we may wish to give more clarification to the end user by differentiating between newly inserted rows and the existing rows(i.e the rows from DB) in a table by highlighting new rows in different color as in the figure shown below. SolutionWe can achieve the same by giving following EL to inlineStyle property of every column inside af:table: #{row.row.entities[0].entityState == 0?'background-color:#307D7E;':''}ExplanationHere is the explanation for row.row.entities[0].entityState given inside EL which returns the state of the row(i.e, New, Modified, Unmodified, Initialized etc.)row - Refers to a tree node binding(instance of FacesCtrlHierNodeBinding) at runtimerow.row - Refers to an instance of row that the tree node is based onrow.row.entities[0] - Gets the Entity row at zeroth index. In most of the cases, the table will be based on single entity. If your table is based on multiple entities then the index needs to be given accordingly.row.row.entities[0].entityState - Gets Entity Object's current Entity-state in the transaction.(0 - New, Modified - 2, Unmodified - 1, Initialized - -1,  etc.,)

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• Redisigning an old site, structure change etc

  - by RhymeGuy

  I have an old site built in 2006, it has around 200 pages and 500 pictures. Every single page is of course indexed as well as images. It is very well ranked for targeted keywords and I receive good amount of SEO traffic (I guess that's due the various campaigns, branding, ppc, etc..) Problem: Site has outdated design, pages and images have not so proper names, there are no heading and alt tags, it was built in tables, inline CSS etc.. Goal: Complete redisign site, use divs, change file names, add proper meta data, alt tags etc.. Question: How this can affect current SEO positions? I will redirect (301) every single page to the new one, build site map, but what to do with images? Do I need to redirect them also? Any other suggestion?

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• Why are there different programming languages [closed]

  - by Velizar Hristov

  I'm not asking about the usefulness of the languages that do exist already: I already know, and agree, that different languages are better for different purposes. However, why don't they just have a single language that can do it all? Why, when C# was created, they didn't keep everything from C and C++ and just add a few things, so that it can be used as both a low-level and high-level language? I see no harm in adding all kinds of commands to a single language that would allow it to be good for everything, and even eliminate the need for all other languages. Someone from another thread said that if there's a flaw in a certain language, its successor might not have it. However, why don't we just update that language to remove the flaw, and/or add anything that's missing? Arrays are different in Java and C#, but why not have them both, just use different commands for them? And so on...

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• Java @Contented annotation to help reduce false sharing

  - by Dave

  See this posting by Aleksey Shipilev for details -- @Contended is something we've wanted for a long time. The JVM provides automatic layout and placement of fields. Usually it'll (a) sort fields by descending size to improve footprint, and (b) pack reference fields so the garbage collector can process a contiguous run of reference fields when tracing. @Contended gives the program a way to provide more explicit guidance with respect to concurrency and false sharing. Using this facility we can sequester hot frequently written shared fields away from other mostly read-only or cold fields. The simple rule is that read-sharing is cheap, and write-sharing is very expensive. We can also pack fields together that tend to be written together by the same thread at about the same time. More generally, we're trying to influence relative field placement to minimize coherency misses. Fields that are accessed closely together in time should be placed proximally in space to promote cache locality. That is, temporal locality should condition spatial locality. Fields accessed together in time should be nearby in space. That having been said, we have to be careful to avoid false sharing and excessive invalidation from coherence traffic. As such, we try to cluster or otherwise sequester fields that tend to written at approximately the same time by the same thread onto the same cache line. Note that there's a tension at play: if we try too hard to minimize single-threaded capacity misses then we can end up with excessive coherency misses running in a parallel environment. Theres no single optimal layout for both single-thread and multithreaded environments. And the ideal layout problem itself is NP-hard. Ideally, a JVM would employ hardware monitoring facilities to detect sharing behavior and change the layout on the fly. That's a bit difficult as we don't yet have the right plumbing to provide efficient and expedient information to the JVM. Hint: we need to disintermediate the OS and hypervisor. Another challenge is that raw field offsets are used in the unsafe facility, so we'd need to address that issue, possibly with an extra level of indirection. Finally, I'd like to be able to pack final fields together as well, as those are known to be read-only.

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• Simple Hierarchical Clustering Implementations for C#?

  - by Joshua Smith

  I need a C# library that can do hierarchical single/complete link clustering. It's for a BSc final year project and I can't find any free implementations. I'd be happy to port a small(ish) Java project to C#, but most of the Java implementations are contained within huge libraries that have 30+ algorithms. The problem with large libraries is that one has to port 50% of the entire library due to dependency fanout. I'd be extremely grateful if anyone knows of any free single/complete link clustering implementations for C# or a small Java implementation of either! By the way, as I am a student, it may be possible to ask for an academic/research license from commercial companies.

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• How to see the full file name on the Lubuntu Desktop?

  - by vasa1

  If I have a file with several characters in it, only a certain number of initial characters is displayed on the Lubuntu desktop and Xfce desktops. For example, I have a file titled, "interesting-links-on-default-browsers". It shows as "interesting-links-on-def..." with both DEs. However, single-clicking on the file in Xfce shows the full title but the truncated title remains in Lubuntu. It's not a big deal, but if it's just a matter of setting something somewhere to get the full title visible on single-click, I'd be grateful for pointers.

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• ubuntu-overlay-scrollbars set to false shows no arrows in several cases

  - by Willem van Gerven

  I'm running 12.04, and prefer the more conservative style "normal" scrollbars over the overlay scrollbars. I have set them to false in the terminal: gsettings set org.gnome.desktop.interface ubuntu-overlay-scrollbars false However after doing so, with some apps (e.g. Nautilus, Document Viewer) my scrollbars only view a vertical bar, but no arrows on the top and bottom to scroll up and down. With some programs these are shown though, for instance Gummi and Texmaker. It would make a big difference (for instance when having to scroll pdf documents containing several hundreds of pages) to have those arrows reinstated. Is there any way to make this work?

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• Is it good to use same keyword for multiple pages in one domain?

  - by Phanen

  Hi, I want to know after Google recent updates, will it be good opt to use same keywords for multiple pages? Say- my keyword is "driver update" and I have a folder "HP" in website. Hp has lots of models like HP Elitebook, HP Envy, HP Mini, HP Pavilion and much more. HP Elitebook has many versions like HP Elitebook 2530p, HP Elitebook 2730p, HP Elitebook 8530w. Now should I create pages like "Driver update in HP Elitebook 2530p" , "Driver update in HP Elitebook 2730p", "Driver update in P Elitebook 8530w" or a single page "Driver update in HP Elitebook"? Which one will be the best option for better SE ranking- " single page or multiple pages using same keyword for different model versions" ?

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• SPARC T5-4 Engineering Simulation Solution

  - by Mike Mulkey-Oracle

  A recent Oracle internal performance evaluation for computer-based product design demonstrated that Oracle's SPARC T5-4 server running MSC's SimManager simulation software with Oracle Database 12c consolidates the work of multiple x86 servers while delivering better overall performance.   Engineering simulation solutions have taken the center stage in helping companies design and develop innovative products while reducing physical prototyping costs, and exploring a larger design space, resulting in more design possibilities. For this solution, a single SPARC T5-4 server running Oracle Solaris 11 was deployed to consolidate the MSC SimManager server, the Oracle Database 12c server, and the web application server onto a single platform. An automotive design workload was deployed to demonstrate how the SPARC T5-4 server can be used to consolidate the work of multiple x86 servers and deliver better overall performance while reducing complexity and achieving optimal product designs.  A joint Oracle/MSC Software solution brief describes this in more detail:  A Simplified Solution for Product Lifecycle Management —MSC SimManager on a SPARC T5-4 Server

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• Is it better to cut and store all sprites needed from a spritesheet in memory, or cut them out just-in-time?

  - by xLite

  I'm not sure what's best practice here as I have little experience with this. Essentially what I am asking is... if it's better to get your single PNG with all your different sprites on it for use in-game, cut out every sprite on startup and store them in memory, then access the already-cut-out sprite from memory quickly or Only have the single PNG with all the different sprites residing in memory, and when you need, for example, a tree. You cut out the tree from the PNG and then continue to use it as normal. I imagine the former is more CPU friendly than the latter but less memory friendly, vice versa for the latter. I want to know what the norm is for game dev. This is a pixel based game using 2D art. Each PNG is actually an avatar's sprite sheet with each body part separated and then later joined to form the full body of the avatar.

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