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  • Is true multithreading really necessary?

    - by Jonathan Graef
    So yeah, I'm creating a programming language. And the language allows multiple threads. But, all threads are synchronized with a global interpreter lock, which means only one thread is allowed to execute at a time. The only way to get the threads to switch off is to explicitly tell the current thread to wait, which allows another thread to execute. Parallel processing is of course possible by spawning multiple processes, but the variables and objects in one process cannot be accessed from another. However the language does have a fairly efficient IPC interface for communicating between processes. My question is: Would there ever be a reason to have multiple, unsynchronized threads within a single process (thus circumventing the GIL)? Why not just put thread.wait() statements in key positions in the program logic (presuming thread.wait() isn't a CPU hog, of course)? I understand that certain other languages that use a GIL have processor scheduling issues (cough Python), but they have all been resolved.

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  • You Couldn't Write it - Houston we have a problem!

    - by GrumpyOldDBA
    Note identities changed to protect the innocent (sic ). In a datacentre I have an iscsi san which provides storage for a SQL Cluster. It developed a fault and required replacement of a few parts, all hot swappable. Although we had suppport/warranty this did not include onsite so we arranged to have the parts delivered. The datacentre did not want to carry out the work so we had to arrange for the manufacturer to send an engineer. Times were arranged and interested/concerned parties put on standby...(read more)

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  • OPN SPECIALIZED Webcasts

    - by Claudia Costa
    OPN Specialized Webcast Series for Partners For the EMEA region the webcasts start at 11:00 CET/10:00GMT. Each training session will run for approximately one hour and include live Q&A. "How to become Specialized in the Applications products portfolio," 25th May 2010,11:00 CET/10:00GMT. Click here for more information& registration. "How to become an OPN Specialized Reseller of Oracle's Sun SPARC Servers, Storage, Software and Services," 1st June 2010,11:00 CET/10:00GMT. Click here for more information& registration.  

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  • Where is the "pysdm" package?

    - by John Boy
    I am new to Ubuntu. I have some old hardware lying around so I decided to build a backup/storage device. I am trying to follow this lifehacker article. It asks me to open a terminal and run sudo apt-get install pysdm. However, I keep getting Unable to locate package pysdm. Does anyone know where my pysdm is or where I can get one. I have run ubuntu from a usb key and have installed it on a hard drive and get the same message.

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  • Webcast: New Features of Solaris 11.1 and Solaris Cluster 4.1

    - by Jeff Victor
    If you missed last week's webcast of the new features in Oracle Solaris 11.1 you can view the recording. The speakers discuss changes that improve performance and scalability, particularly for Oracle DB, and many other enhancements. New features include Optimized Shared Memory (improves DB startup time), accelerated kernel locks (improves Oracle RAC performance and scalability), virtual memory improvements, a DTrace data collecter in the DB, Zones installed on Shared Storage (simplifies migration), Data Center Bridging, and Edge Virtual Bridging. To view the archived webcast, you must register and use the URL that you receive in e-mail.

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  • How to remove the graphical user interface?

    - by Praveen Kumar
    Ok my question is that, I want to run a heavy application, on a Virtual Machine (VirtualBox) with just 2 GB RAM (Windows 7 32Bit Host has 4 GB, 3.5 GB effective). Initially I thought of installing Ubuntu Server 12.04.1, which doesn't come with a GUI, so I thought it would be efficient in performance, but I have only Ubuntu 12.04 Desktop. My question is, is it possible to remove the GUI parts in Ubuntu 12.04 Desktop (Not Server), keeping only the core OS, after installation in a virtual machine? Or, is there anyway to improve the performance of the OS? If you need more information, I am ready to provide. I don't want the GUI or anything, even a small terminal window is fine for me, I can access files through FTP.

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  • List of custom Launchers & Quicklists for Unity

    - by Nik
    Creating a custom launcher for unity is simple. Quicklists provide a easy and efficient way to quickly access commonly used tasks for a specific application. The steps to create a custom launcher is easy. Right-click on your desktop and click create a launcher. Edit the .desktop file using a text editor and using this you can create static quicklists for the Unity. (more info here and here) So what custom launchers do you use on Unity? Note: Please limit one answer per custom launcher. Also please do provide a screenshot of it in action.

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  • Siemens AG, Sector Healthcare, Increases Transparency and Improves Customer Loyalty with Web Portal Solution

    - by Kellsey Ruppel
    Siemens AG, Sector Healthcare, Increases Transparency and Improves Customer Loyalty with Web Portal Solution CUSTOMER AND PARTNER INFORMATION Customer Name – Siemens AG, Sector Healthcare Customer Revenue – 73,515 Billion Euro (2011, Siemens AG total) Customer Quote – “The realization of our complex requirements within a very short amount of time was enabled through the competent implementation partner Sapient, who fully used the  very broad scope of standard functionality provided in the Oracle WebCenter Portal, and the management of customer services, who continuously supported the project setup. ” – Joerg Modlmayr, Project Manager, Healthcare Customer Service Portal, Siemens AG The Siemens Healthcare Sector is one of the world's largest suppliers to the healthcare industry and a trendsetter in medical imaging, laboratory diagnostics, medical information technology and hearing aids. Siemens offers its customers products and solutions for the entire range of patient care from a single source – from prevention and early detection to diagnosis, and on to treatment and aftercare. By optimizing clinical workflows for the most common diseases, Siemens also makes healthcare faster, better and more cost-effective. To ensure greater transparency, increased efficiency, higher user acceptance, and additional services, Siemens AG, Sector Healthcare, replaced several existing legacy portal solutions that could not meet the company’s future needs with Oracle WebCenter Portal. Various existing portal solutions that cannot meet future demands will be successively replaced by the new central service portal, which will also allow for the efficient and intuitive implementation of new service concepts.  With Oracle, doctors and hospitals using Siemens medical solutions now have access to a central information portal that provides important information and services at just the push of a button.  Customer Name – Siemens AG, Sector Healthcare Customer URL – www.siemens.com Customer Headquarters – Erlangen, Germany Industry – Industrial Manufacturing Employees – 360,000  Challenges – Replace disparate medical service portals to meet future demands and eliminate an  unnecessarily high level of administrative work caused by heterogeneous installations Ensure portals meet current user demands to improve user-acceptance rates and increase number of total users Enable changes and expansion through standard functionality to eliminate the need for reliance on IT and reduce administrative efforts and associated high costs Ensure efficient and intuitive implementation of new service concepts for all devices and systems Ensure hospitals and clinics to transparently monitor and measure services rendered for the various medical devices and systems  Increase electronic interaction and expand services to achieve a higher level of customer loyalty Solution –  Deployed Oracle WebCenter Portal to ensure greater transparency, and as a result, a higher level of customer loyalty  Provided a centralized platform for doctors and hospitals using Siemens’ medical technology solutions that provides important information and services at the push of a button Reduced significantly the administrative workload by centralizing the solution in the new customer service portal Secured positive feedback from customers involved in the pilot program developed by design experts from Oracle partner Sapient. The interfaces were created with customer needs in mind. The first survey taken shortly after implementation came back with 2.4 points on a scale of 0-3 in the category “customer service portal intuitiveness level” Met all requirements including alignment with the Siemens Style Guide without extensive programming Implemented additional services via the portal such as benchmarking options to ensure the optimal use of the Customer Device Park Provided option for documentation of all services rendered in conjunction with the medical technology systems to ensure that the value of the services are transparent for the decision makers in the hospitals  Saved and stored all machine data from approximately 100,000 remote systems in the central service and information platform Provided the option to register errors online and follow the call status in real-time on the portal Made  available at the push of a button all information on the medical technology devices used in hospitals or clinics—from security checks and maintenance activities to current device statuses Provided PDF format Service Performance Reports that summarize information from periods of time ranging from previous weeks up to one year, meeting medical product law requirements  Why Oracle – Siemens AG favored Oracle for many reasons, however, the company ultimately decided to go with Oracle due to the enormous range of functionality the solutions offered for the healthcare sector.“We are not programmers; we are service providers in the medical technology segment and focus on the contents of the portal. All the functionality necessary for internet-based customer interaction is already standard in Oracle WebCenter Portal, which is a huge plus for us. Having Oracle as our technology partner ensures that the product will continually evolve, providing a strong technology platform for our customer service portal well into the future,” said Joerg Modlmayr project manager, Healthcare Customer Service Portal, Siemens AG. Partner Involvement – Siemens AG selected Oracle Partner Sapient because the company offered a service portfolio that perfectly met Siemens’ requirements and had a wealth of experience implementing Oracle WebCenter Portal. Additionally, Sapient had designers with a very high level of expertise in usability—an aspect that Siemens considered to be of vast importance for the project.  “The Sapient team completely met all our expectations. Our tightly timed project was completed on schedule, and the positive feedback from our users proves that we set the right measures in terms of usability—all thanks to the folks at Sapient,” Modlmayr said.  Partner Name – Sapient GmbH Deutschland Partner URL – www.sapient.com

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  • Use Your PC to Keep Yourself Entertained While Traveling for the Holidays

    - by Justin Garrison
    Staying connected may be hard no matter what network you are on, and in flight Wi-Fi isn’t pervasive enough to count on. Here are tips and tricks to keep yourself entertained when unplugged and traveling. Image Via MarinaAvila Latest Features How-To Geek ETC How to Use the Avira Rescue CD to Clean Your Infected PC The Complete List of iPad Tips, Tricks, and Tutorials Is Your Desktop Printer More Expensive Than Printing Services? 20 OS X Keyboard Shortcuts You Might Not Know HTG Explains: Which Linux File System Should You Choose? HTG Explains: Why Does Photo Paper Improve Print Quality? Ubuntu Font Family Now Available for Download Oh No! WikiLeaks Published Santa Claus’s Naughty List [Video] Remember the Milk Now Supports HTTPS Encryption for the Entire Session MTCrypt Is an Efficient Front End for Mounting TrueCrypt Volumes 10 Things You Should Do with Your New Android Phone Walking Through the Park on a Snowy Night Wallpaper

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  • Cloud hosting vs self hosting price

    - by yes123
    I was looking at some cloud hosting price. Consider an entry level self hosted server: PRICE: 40€ ---------- CPU: i5 (4x 2.66 GHz) RAM: 16GB hard disk: 2TB Bandwidth: 10TB/month with 100Mbps Now consider an equivalent on a cloud structure... (for example phpfog) PRICE: 29$ -------------- RAM: 613MB (LOL WUT?) CPU: 2 Burst ECUs Storage: 10GB (WUT?) Basically with cloud, to have the same hardware of your entry level dedicated server you have to pay 300-400€... Is it normal? I am missing something?

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  • Payback Is The Coupon King

    - by Troy Kitch
    PAYBACK GmbH operates the largest marketing and couponing platforms in the world—with more than 50 million subscribers in Germany, Poland, India, Italy, and Mexico.  The Security Challenge Payback handles millions of requests for customer loyalty coupons and card-related transactions per day under tight latency constraints—with up to 1,000 attributes or more for each PAYBACK subscriber. Among the many challenges they solved using Oracle, they had to ensure that storage of sensitive data complied with the company’s stringent privacy standards aimed at protecting customer and purchase information from unintended disclosure. Oracle Advanced Security The company deployed Oracle Advanced Security to achieve reliable, cost-effective data protection for back-up files and gain the ability to transparently encrypt data transfers. By using Oracle Advanced Security, organizations can comply with privacy and regulatory mandates that require encrypting and redacting (display masking) application data, such as credit cards, social security numbers, or personally identifiable information (PII). Learn more about how PAYBACK uses Oracle.

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  • Amazon Web Services Free Trial: query about get and put requests

    - by abel
    Amazon recently introduced a free tier for its cloud offering. I signed up for AWS and while signing up for the free tier of S3, i found this As part of AWS Free Usage Tier, you can get started with Amazon S3 for free. Upon sign-up, new AWS customers receive 5 GB of Amazon S3 storage, 20,000 Get Requests, 2,000 Put Requests, 15GB of bandwidth in and 15GB of bandwidth out each month for one year. source:aws.amazon.com , emphasis mine. 20,000 GET requests & 2000 puts mean , 20,000 page views(max) and 2000 file uploads per month. Isn't that lower than what App Engine offers 43,200,000 requests per day.Am I missing some thing, please help.

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  • eReaderLookup Catalogs and Compares Over 100 eBook Readers

    - by Jason Fitzpatrick
    Although the Kindle and Nook get the most press time, there’s a world of ebook readers out there; eReaderLookup helps you search by price, size, screen type, storage, and other parameters to find the perfect ebook reader for your needs. Whether you’re trying to find a reader with an SD card slot, a large screen, or native support for an less-than-popular file format, you can plug it into eReaderLookup and see if a reader exists that fits your needs. If there is more than one reader that matches your search parameters you can easily compare them in a side-by-side setup to quickly compare the stats. Hit up the link below to take it for a spin. eReaderLookup [via MakeUseOf] How to Stress Test the Hard Drives in Your PC or Server How To Customize Your Android Lock Screen with WidgetLocker The Best Free Portable Apps for Your Flash Drive Toolkit

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  • Limited resource practice problems?

    - by Mark
    I'm applying for some big companies and the areas I seem to be getting burned on is problems involving limited memory, disk-space or throughput. These large companies process GBs of data every second (or more), and they need efficient ways of managing all that data. I have no experience with this as none of the projects I have worked on have grown that large. Is there a good place to learn about or practice these sorts of problems? Most of the practice-problem sites I've encountered only have problems where you have to solve something efficiently (usually involving prime numbers) but none of them limit your resources.

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  • Using multiple indexes with buffer objects in OpenTK

    - by Rushyo
    I've got multiple buffers in OpenGL holding data on position, normals and texcoords. I also have an equal number of buffers holding distinct index data for each of those buffers. I quite like this format (indvidual indexes for each buffer) utilised by COLLADA since it strikes me as optimally efficient at accessing each buffer. I've set up pointers to the relevant data arrays using VertexPointer, NormalPointer, etc however I have no way to assign pointers to the index buffers since DrawElements appear to only look at one ElementArrayBuffer. Can I utilise multiple indices some way or will I be better off using a different technique which can support this? I'd prefer to keep the distinct indices if at all possible.

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  • Development on Terminal or IDE [on hold]

    - by Taylor Flores
    I've been using nano, make, gcc, and gdb for 6 months now and I've found it much easier than using VS or Codeblocks. But I'm wondering now: Is development on a terminal more/less efficient that using an IDE? In what situations is one preferred more sensible than the other? I'm not asking about opinions, I want to know if there's specific reasons to use one over the other. From what I can gather: terminals can be used on environments where a GUI is not available terminal projects can be created and configured more quickly IDEs contain better syntax highlighters (ie identity highlighters) This question is C biased, but I think it's relevant to other languages as well.

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  • Webshop for digital goods with voucher / gift card system [duplicate]

    - by Kelzama
    This question already has an answer here: Which Ecommerce Script Should I Use? 1 answer I'm searching for a webshop which provides the following: The shop offers digital goods (like mp3) User can buy a voucher / gift card @Reseller (Or there is a code provided in the CD) User can enter his code @ webshop and gets the download (unregistered) User can enter his code @ webshop and download is added to his/her library (registered) optional: Resellers can buy codes from the Webshop I already tried prestashop as it looks quite nice. But it needs a lot of custom programming (and has a very strange voucher-system). Customer has to add the File into the basket and add the voucher at checkout. I want to skip that ;) Is there a Webshop (Or CMS + Plugin) which provides the things I need? (it could also be a CMS with a Storage/Folder Plugin (like joomla + K2) and a possibility to activate downloads via unique Codes.) Any ideas are highly appreciated :) Thanks in advance.

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  • "merging" multiple hardrives for Ubuntu 14.04 install

    - by Thijser
    I have 3 hardrives inside my laptop 2 of which currently house other opperating systems but have a empty partitions of 8 and 9 gigabye and the third is just 12 gB (currently not partitioned at all). Now each of these 3 is to small to be useful to me, however combined they are 29gigs which can easily hold a ubuntu installation, and associated programs. Is there a way set up my installation in such a way that it threads these 3 disks as one? Or is there a way by which I can make it default storage of many things into one drive (downloads and sudo apt-get install for example) to one drive while keeping ubuntu onto another?

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  • Ask the Readers: How Do You Keep Your Email SPAM Free and Tidy?

    - by Jason Fitzpatrick
    Email can be a fantastically efficient way to deal with communication, but not if it’s bogged down with SPAM messages and poorly organized. This week we want to hear all about the tips, tricks, and ninja-filters you use to keep your inbox tidy. Whether it’s special filters for your Bacon (spam-like marketing that you actually want to receive and occasional review), services you use to block spammers, or organization tips you use to keep your email inbox streamlined with no message unreplied to, we want to hear all about it. Sound off in the comments with your proclamations of your inbox-fu and how you maintain zen-like mastery over your email workflow. Be sure to check in on Friday for the What You Said roundup. How to Banish Duplicate Photos with VisiPic How to Make Your Laptop Choose a Wired Connection Instead of Wireless HTG Explains: What Is Two-Factor Authentication and Should I Be Using It?

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  • Feel the Chill of the South Atlantic with the Antarctica Theme for Windows 7

    - by Asian Angel
    Are you fascinated by the beauty and wildlife of Antarctica? Then bring both to your desktop with the Antarctica Theme for Windows 7. The theme comes with fifteen gorgeous wallpapers of frosty scenery, penguins, whales, and more to make your desktop icy cool. Download the Antarctica Theme [Windows 7 Personalization Gallery] Latest Features How-To Geek ETC What Can Super Mario Teach Us About Graphics Technology? Windows 7 Service Pack 1 is Released: But Should You Install It? How To Make Hundreds of Complex Photo Edits in Seconds With Photoshop Actions How to Enable User-Specific Wireless Networks in Windows 7 How to Use Google Chrome as Your Default PDF Reader (the Easy Way) How To Remove People and Objects From Photographs In Photoshop Make Efficient Use of Tab Bar Space by Customizing Tab Width in Firefox See the Geeky Work Done Behind the Scenes to Add Sounds to Movies [Video] Use a Crayon to Enhance Engraved Lettering on Electronics Adult Swim Brings Their Programming Lineup to iOS Devices Feel the Chill of the South Atlantic with the Antarctica Theme for Windows 7 Seas0nPass Now Offers Untethered Apple TV Jailbreaking

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  • Error when trying to get movies off my Camera

    - by matt wilkie
    How do I retrieve movies and audio files from my Canon PowerShot S5 IS camera? Shotwell only sees the pictures. Mounting the camera via "Places Canon Digital Camera" and then clicking twice on the resulting desktop icon yields this error: could not display "gphoto2://[usb:001,002]/" There is nothing in /media. update: output of sudo fdisk -l Disk /dev/sda: 40.0 GB, 40007761920 bytes 255 heads, 63 sectors/track, 4864 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x3ee33ee2 Device Boot Start End Blocks Id System /dev/sda1 2364 2612 1999872 82 Linux swap / Solaris /dev/sda2 * 1 2364 18979840 83 Linux /dev/sda3 2613 4864 18089159+ f W95 Ext'd (LBA) /dev/sda5 2613 4864 18089158+ b W95 FAT32 Partition table entries are not in disk order Solution: install gphotofs, then Nautilus shows camera contents similar to a standard usb storage device (though note that gphotofs does not yet support adding to or deleting contents).

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  • How to efficiently map tokens to code in a script interpreter?

    - by lithander
    I'm writing an interpreter for a simple scripting language where each line is a complete, executable command. (Like the instructions in assembler) When parsing a line I have to map the requested command to actual code. My current solution looks like this: std::string op, param1, param2; //parse line, identify op, param1, param2 ... //call command specific code if(op == "MOV") ExecuteMov(AsNumber(param1)); else if(op == "ROT") ExecuteRot(AsNumber(param1)); else if(op == "SZE") ExecuteSze(AsNumber(param1)); else if(op == "POS") ExecutePos((AsNumber(param1), AsNumber(param2)); else if(op == "DIR") ExecuteDir((AsNumber(param1), AsNumber(param2)); else if(op == "SET") ExecuteSet(param1, AsNumber(param2)); else if(op == "EVL") ... The more commands are supported the more string comparisions I'll have to do to identify and call the associated method. Can you point me to a more efficient implementation in the described scenario?

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  • Automated Post-billing Service/Solution

    - by geoffreak
    I'm trying to find a solution or service that will allow for my company to automatically take a customer's credit card information via the web to keep on file and bill against based on how much they have used the services we provide. We need a service that will also handle the payment processing as well. Note that this is not recurring billing. The bill at the end of each month won't be the same. Presently, we are having to take a customer's credit card information over the phone and manually input it into Quickbooks, but this just doesn't work for scalability. We will still be manually invoicing the customers, but we need automated credit card acceptance and storage without the liabilities involved with storing it on our own server. Solutions that integrate with Wordpress would be a plus.

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  • How to use OO for data analysis? [closed]

    - by Konsta
    In which ways could object-orientation (OO) make my data analysis more efficient and let me reuse more of my code? The data analysis can be broken up into get data (from db or csv or similar) transform data (filter, group/pivot, ...) display/plot (graph timeseries, create tables, etc.) I mostly use Python and its Pandas and Matplotlib packages for this besides some DB connectivity (SQL). Almost all of my code is a functional/procedural mix. While I have started to create a data object for a certain collection of time series, I wonder if there are OO design patterns/approaches for other parts of the process that might increase efficiency?

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  • How can I play AMR files in Firefox on Ubuntu?

    - by Dave M G
    I use Evernote to keep voice and text notes. Unfortunately, I've just discovered that I can't take full advantage of the cloud storage capabilities of Evernote, because support for Android's native sound file format, AMR, is deficient in Ubuntu. When I view my voice notes in Firefox in Ubuntu, I get a "missing plugin" error. The problem is discussed on the Evernote forums, but the solutions offered there are really lacking. They all involve saving and converting files, which seems like an unreasonable amount of fiddling. Surely an AMR file is just a sound file, and surely Ubuntu could (and should) have a way of playing it? There is some suggestion that Media Player can play AMR format, and I thought there was a Media Player plugin for Firefox. But I can not find any specifics. How can I get Ubuntu to play AMR file directly in Firefox in Ubuntu?

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