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  • Do you sign contracts digitally or still on paper? And what do clients think?

    - by user1162541
    We are all getting used to checking a box and putting our name in a text field to create a contract with an airline, a hosting company, or a software download. However, for some reason I am still asking clients to sign our contracts for website development on paper, and send me a scan. Few complain about this procedure, but I am personally thinking: what am I doing, doing this the old fashion way?! Signing contracts digitally would be faster, more convenient for clients and for me, and easier to store. So to me it appears to be time to start creating some contract agreement online that clients can read, then print their name, and mark a box "I AGREE WITH THIS CONTRACT AND BY PRINTING MY NAME I AGREE TO SIGNING THIS", or something like that. I would record their IP, browser data, and time of signing. If I really want to ensure their identity, I could link this to OpenID and require them to log in with their e-mail so that I can ensure that they are logged in on an existing e-mail account. Sounds OK to me. My question is: is this practice becoming a standard practice in professional IT services? Are you (as a professional) doing this? If you are, how do clients react? Any drawbacks doing this? EDIT: This question is not about the legal aspects. It is about common practices among programmers and web-development companies, and what clients think of this.

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  • GPL'ing code of a third party?

    - by Mark
    I am facing the following dilemma at the moment. I am using code from a scientific paper in a commercial project. So basically I copied and pasted the code from the paper's pdf into my code editor and use it in my own code. The code in the paper does not have any copy restrictions or license(like the GPL) so I thought I would be ok using it in a commercial project. However, I have seen several gpl licensed open source projects that use the exact same code from the paper to the point of having the same variable names like in the paper. So what happened here is that a gpl license was put on a third parties non gpl'ed code. Are these open source projects in violation of the gpl or would I be in violation of the gpl because I use code which has been gpl'ed? My common sense tells me it is not allowed to gpl somebody elses non-gpl'ed (like in this case from the paper) code but I though I would ask anyway.

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  • Understanding #DAX Query Plans for #powerpivot and #tabular

    - by Marco Russo (SQLBI)
    Alberto Ferrari wrote a very interesting white paper about DAX query plans. We published it on a page where we'll gather articles and tools about DAX query plans: http://www.sqlbi.com/topics/query-plans/I reviewed the paper and this is the result of many months of study - we know that we just scratched the surface of this topic, also because we still don't have enough information about internal behavior of many of the operators contained in a query plan. However, by reading the paper you will start reading a query plan and you will understand how it works the optimization found by Chris Webb one month ago to the events-in-progress scenario. The white paper also contains a more optimized query (10 time faster), even if the performance depends on data distribution and the best choice really depends on the data you have. Now you should be curious enough to read the paper until the end, because the more optimized query is the last example in the paper!

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  • What is a good topic for a research paper on modern computer architecture?

    - by Max Schmeling
    This may not be the right place for this, but I wanted to get this question in front of some of the brightest people on the internet, so I thought I'd give it a shot. I have to write a research paper on some modern aspect of computer architecture. The subject is really not very restrictive; pretty much any recent development in computer hardware will work. I want to write it over something really interesting, but I don't have a lot of good ideas. What would make a really interesting paper?

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  • How can one describe a rock-paper-scissors relationship between 3 items?

    - by Madara Uchiha
    Let's say I have the following structure: abstract class Hand {} class Rock extends Hand {} class Paper extends Hand {} class Scissors extends Hand {} The goal is to make a function (or a method) Hand::compareHands(Hand $hand1, Hand $hand2), which would return the winning hand in a rock-paper-scissors match. That would be very easy with a bunch of ifs, but the point is to have a more robust structure, that's relying on polymorphism rather than on procedural code. P.S. this is done in actual production code, if someone is asking. This isn't some sort of challenge or homework. (It's not really rock-paper-scissors, but you get the point).

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  • Is this the best way to get the size of a Paper via CUPS?

    - by Lawrence Johnston
    I've got a CUPS job control file. I need to get the actual dimensions of the print that was made. This is the way I've figure out to do it: Get the paper name using the media attribute. (e.g. Letter) Get the printer uri from the printer-uri attribute. (e.g. ipp://localhost/printers/MyPrinter) Get the printer name by passing the printer uri to the IPP_GET_PRINTER_ATTRIBUTES operation and getting the printer-name attribute. (e.g. MyPrinter) Get the path to the PPD passing the printer name to the the cupsGetPPD method. Open the PPD passing the path to the PPD to the ppdOpenFile method. Get the paper size by passing the PPD and paper name to the ppdPageSize method. This will work, but it seems a bit roundabout. Is there a more efficient way of getting what I need?

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  • Vermeidung von SOA Anti-Patterns mittels AIA

    - by Hans Viehmann
    Gerade ist mir ein White Paper des Enterprise Architecture Teams in die Hände gefallen, das sich mit SOA Anti-Patterns befasst. Es ist zwar kein AIA Paper im eigentlichen Sinne, aber mit AIA hat man natürlich eine gute Unterstützung darin, die dort beschriebenen Fehler zu vermeiden. Das White Paper behandelt Themen wie: Vermeidung von SOA Silos SOA Reifegrad und Projekt-Management Ausuferndes Service Portfolio Umgang mit Referenz-Architekturen EAI 2.0 - Punkt-zu-Punkt Integration auf offenen Standards Ein Link auf das Dokument ist unten angefügt - viel Vergnügen bei der Lektüre ... Oracle White Paper: SOA Anti-Patterns.

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  • SQLAuthority News – Download SQL Server 2008 R2 Upgrade Technical Reference Guide

    - by pinaldave
    I recently come across very interesting white paper written for Microsoft by Solid Quality Mentors. A successful upgrade to SQL Server 2008 R2 should be smooth and trouble-free. To do that smooth transition, you must plan sufficiently for the upgrade and match the complexity of your database application. Otherwise, you risk costly and stressful errors and upgrade problems. SQL Server 2008 R2 Upgrade Technical Reference Guide is one of the best and comprehensive reference guide I have seen on the subject of SQL Server 2008 R2 upgrade. There are so many various subjects discussed about upgrade which one would always wanted to see. You can find the link of why one has to upgrade to SQL Server 2008 R2 over here: Why upgrade to SQL Server 2008 R2. White paper to upgrade to SQL Server 2008 R2 Upgrade Guide. Here is the quick list of content of the white paper. 1. Upgrade Planning and Deployment 2. Management and Development Tools 3. Relational Databases 4. High Availability 5. Database Security 6. Full-Text Search 7. Service Broker 8. Transact-SQL Queries 9. Notification Services 10. SQL Server Express 11. Analysis Services 12. Data Mining 13. Integration Services 14. Reporting Services 15. Other Microsoft Applications and Platforms Appendix 1: Version and Edition Upgrade Paths Appendix 2: Upgrade Planning Deployment and Tasks Checklist This white paper is indeed huge with 490 pages and 151,956 words.As I said, this is one of the most comprehensive white paper ever published on the subject. Just reading this white paper one can learn a lot about SQL Server. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Documentation, SQL Download, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority News, T SQL, Technology

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  • Does anybody wish to help a poor researcher publish a paper?

    - by Mihai Todor
    I don't know if this is a good place to beg for help, but here it goes: basically, I need to run a secure recommender system simulation (C++ console application) in order to meet tonight's deadline, and the faculty's server grid decided to go offline. I could really use something like 10+ (actually, about 16 would be required to meet the deadline) virtual instances of some Linux that has GMP installed... Ideally, they should all have the same specs, because a part of the simulation will represent performance benchmarks. If my question is inappropriate in any way, I kindly ask the administrators to remove it.

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  • Moving a copied layer group precisely in GIMP to make a paper of business cards?

    - by rautamiekka
    I found a template with space for 10 business cards, without extra space anywhere. Using GIMP 2.8.10, I made the design in top left slot and now I need to get that to the other slots. What is the best way to achieve that ? Using mouse is out of question for lack of precision and keyboard takes too long and still isn't completely precise, where we obviously can't afford lack of precision. Though, I'm no artist. The problem is that the slot's contents aren't anywhere same size as the slot itself.

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  • Raphael - what is the native delay function to draw circles?

    - by 3gwebtrain
    I am using Raphael, to draw 3 circles. how to i make the circles draw each one by one with some time gap? I know there is a option with settimeout, but apart from is there any native function to make delay to draw the circles? my simple code: <div id="paper"></div> var paper = Raphael('paper',500,500); var c1 = paper.circle(50,50,25); var c2 = paper.circle(100,50,25); var c3 = paper.circle(150,50,25); jsfiddle here

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  • How to call a set of variables functions based on class on a group of elements

    - by user1547007
    I have the following html code: <i class="small ele class1"></i> <i class="medium ele class1"></i> <i class="large ele class1"></i> <div class="clear"></div> <i class="small ele class2"></i> <i class="medium ele class2"></i> <i class="large ele class2"></i> <div class="clear"></div> <i class="small ele class3"></i> <i class="medium ele class3"></i> <i class="large ele class3"></i> <div class="clear"></div> <i class="small ele class4"></i> <i class="medium ele class4"></i> <i class="large ele class4"></i>? And my javascript looks like so: var resize = function(face, s) { var bb = face.getBBox(); console.log(bb); var w = bb.width; var h = bb.height; var max = w; if (h > max) { max = h; } var scale = s / max; var ox = -bb.x+((max-w)/2); var oy = -bb.y+((max-h)/2); console.log(s+' '+h+' '+bb.y); face.attr({ "transform": "s" + scale + "," + scale + ",0,0" + "t" + ox + "," + oy }); } $('.ele').each(function() { var s = $(this).innerWidth(); var paper = Raphael($(this)[0], s, s); var face = $(this).hasClass("class1") ? class1Generator(paper) : class4Generator(paper); /*switch (true) { case $(this).hasClass('class1'): class1Generator(paper); break; case $(this).hasClass('class2'): class2Generator(paper) break; case $(this).hasClass('class3'): class3Generator(paper) break; case $(this).hasClass('class4'): class4Generator(paper) break; }*/ resize(face, s); }); my question is, how could I make this line of code more scalable? I tried using a switch but The script below is calling two functions if one of the elements has a class, but what If i have 10 classes? I don't think is the best solution I created a jsFiddle http://jsfiddle.net/7uUgz/6/ //var face = $(this).hasClass("awesome") ? awesomeGenerator(paper) : awfulGenerator(paper);

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  • Data not synchornizing java sockets

    - by Droid_Interceptor
    I am writing a auction server and client and using a class called BidHandler to deal with the bids another class AuctionItem to deal with the items for auction. The main problem I am having is little synchroization problem. Screen output of client server as can see from the image at 1st it takes the new bid and changes the value of the time to it, but when one the user enters 1.0 the item seems to be changed to that. But later on when the bid changes again to 15.0 it seems to stay at that price. Is there any reason for that. I have included my code below. Sorry if didnt explain this well. This is the auction client import java.io.*; import java.net.*; public class AuctionClient { private AuctionGui gui; private Socket socket; private DataInputStream dataIn; private DataOutputStream dataOut; //Auction Client constructor String name used as identifier for each client to allow server to pick the winning bidder public AuctionClient(String name,String server, int port) { gui = new AuctionGui("Bidomatic 5000"); gui.input.addKeyListener (new EnterListener(this,gui)); gui.addWindowListener(new ExitListener(this)); try { socket = new Socket(server, port); dataIn = new DataInputStream(socket.getInputStream()); dataOut = new DataOutputStream(socket.getOutputStream()); dataOut.writeUTF(name); while (true) { gui.output.append("\n"+dataIn.readUTF()); } } catch (Exception e) { e.printStackTrace(); } } public void sentBid(String bid) { try { dataOut.writeUTF(bid); } catch(IOException e) { e.printStackTrace(); } } public void disconnect() { try { socket.close(); } catch(IOException e) { e.printStackTrace(); } } public static void main (String args[]) throws IOException { if(args.length!=3) { throw new RuntimeException ("Syntax: java AuctionClient <name> <serverhost> <port>"); } int port = Integer.parseInt(args[2]); AuctionClient a = new AuctionClient(args[0],args[1],port); } } The Auction Server import java.io.*; import java.net.*; import java.util.*; public class AuctionServer { public AuctionServer(int port) throws IOException { ServerSocket server = new ServerSocket(port); while(true) { Socket client = server.accept(); DataInputStream in = new DataInputStream(client.getInputStream()); String name = in.readUTF(); System.out.println("New client "+name+" from " +client.getInetAddress()); BidHandler b = new BidHandler (name, client); b.start(); } } public static void main(String args[]) throws IOException { if(args.length != 1) throw new RuntimeException("Syntax: java AuctionServer <port>"); new AuctionServer(Integer.parseInt(args[0])); } } The BidHandler import java.net.*; import java.io.*; import java.util.*; import java.lang.Float; public class BidHandler extends Thread { Socket socket; DataInputStream in; DataOutputStream out; String name; float currentBid = 0.0f; AuctionItem paper = new AuctionItem(" News Paper ", " Free newspaper from 1990 ", 1.0f, false); protected static Vector handlers = new Vector(); public BidHandler(String name, Socket socket) throws IOException { this.name = name; this.socket = socket; in = new DataInputStream (new BufferedInputStream (socket.getInputStream())); out = new DataOutputStream(new BufferedOutputStream(socket.getOutputStream())); } public synchronized void run() { try { broadcast("New bidder has entered the room"); handlers.addElement(this); while(true) { broadcast(paper.getName() + paper.getDescription()+" for sale at: " +paper.getPrice()); while(paper.getStatus() == false) { String message = in.readUTF(); currentBid = Float.parseFloat(message); broadcast("Bidder entered " +currentBid); if(currentBid > paper.getPrice()) { paper.setPrice(currentBid); broadcast("New Higgest Bid is "+paper.getPrice()); } else if(currentBid < paper.getPrice()) { broadcast("Higgest Bid is "+paper.getPrice()); } else if(currentBid == paper.getPrice()) { broadcast("Higgest Bid is "+paper.getPrice()); } } } } catch(IOException ex) { System.out.println("-- Connection to user lost."); } finally { handlers.removeElement(this); broadcast(name+" left"); try { socket.close(); } catch(IOException ex) { System.out.println("-- Socket to user already closed ?"); } } } protected static void broadcast (String message) { synchronized(handlers) { Enumeration e = handlers.elements(); while(e.hasMoreElements()) { BidHandler handler = (BidHandler) e.nextElement(); try { handler.out.writeUTF(message); handler.out.flush(); } catch(IOException ex) { handler = null; } } } } } The AuctionItem Class class AuctionItem { String itemName; String itemDescription; float itemPrice; boolean itemStatus; //Create a new auction item with name, description, price and status public AuctionItem(String name, String description, float price, boolean status) { itemName = name; itemDescription = description; itemPrice = price; itemStatus = status; } //return the price of the item. public synchronized float getPrice() { return itemPrice; } //Set the price of the item. public synchronized void setPrice(float newPrice) { itemPrice = newPrice; } //Get the status of the item public synchronized boolean getStatus() { return itemStatus; } //Set the status of the item public synchronized void setStatus(boolean newStatus) { itemStatus = newStatus; } //Get the name of the item public String getName() { return itemName; } //Get the description of the item public String getDescription() { return itemDescription; } } There is also simple GUI to go with this that seems to be working fine. If anyone wants it will include the GUI code.

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  • SQLAuthority News – Statistics Used by the Query Optimizer in Microsoft SQL Server 2008 – Microsoft Whitepaper

    - by pinaldave
    I recently presented session on Statistics and Best Practices in Virtual Tech Days on Nov 22, 2010. The sessions was very popular and I got many questions right after the sessions. The number question I had received was where everybody can get the further information. I am very much happy that my sessions created some curiosity for one of the most important feature of the SQL Server. Statistics are the heart of the SQL Server. Microsoft has published a white paper on the subject how statistics are useful to Query Optimizer. Here is the abstract of the same white paper from Microsoft. Statistics Used by the Query Optimizer in Microsoft SQL Server 2008 Writer: Eric N. Hanson and Yavor Angelov Microsoft SQL Server 2008 collects statistical information about indexes and column data stored in the database. These statistics are used by the SQL Server query optimizer to choose the most efficient plan for retrieving or updating data. This paper describes what data is collected, where it is stored, and which commands create, update, and delete statistics. By default, SQL Server 2008 also creates and updates statistics automatically, when such an operation is considered to be useful. This paper also outlines how these defaults can be changed on different levels (column, table, and database). In addition, it presents how certain query language features, such as Transact-SQL variables, interact with use of statistics by the optimizer, and it provides guidance for using these features when writing queries so you can obtain good query performance. Link to white paper Statistics Used by the Query Optimizer in Microsoft SQL Server 2008 ?Reference: Pinal Dave (http://blog.SQLAuthority.com)   Filed under: Pinal Dave, SQL, SQL Authority, SQL Documentation, SQL Download, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, SQL White Papers, SQLAuthority News, T SQL, Technology

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  • My ASP.NET news sources

    - by Jon Galloway
    I just posted about the ASP.NET Daily Community Spotlight. I was going to list a bunch of my news sources at the end, but figured this deserves a separate post. I've been following a lot of development blogs for a long time - for a while I subscribed to over 1500 feeds and read them all. That doesn't scale very well, though, and it's really time consuming. Since the community spotlight requires an interesting ASP.NET post every day of the year, I've come up with a few sources of ASP.NET news. Top Link Blogs Chris Alcock's The Morning Brew is a must-read blog which highlights each day's best blog posts across the .NET community. He covers the entire Microsoft development, but generally any of the top ASP.NET posts I see either have already been listed on The Morning Brew or will be there soon. Elijah Manor posts a lot of great content, which is available in his Twitter feed at @elijahmanor, on his Delicious feed, and on a dedicated website - Web Dev Tweets. While not 100% ASP.NET focused, I've been appreciating Joe Stagner's Weekly Links series, partly since he includes a lot of links that don't show up on my other lists. Twitter Over the past few years, I've been getting more and more of my information from my Twitter network (as opposed to RSS or other means). Twitter is as good as your network, so if getting good information off Twitter sounds crazy, you're probably not following the right people. I already mentioned Elijah Manor (@elijahmanor). I follow over a thousand people on Twitter, so I'm not going to try to pick and choose a list, but one good way to get started building out a Twitter network is to follow active Twitter users on the ASP.NET team at Microsoft: @scottgu (well, not on the ASP.NET team, but their great grand boss, and always a great source of ASP.NET info) @shanselman @haacked @bradwilson @davidfowl @InfinitiesLoop @davidebbo @marcind @DamianEdwards @stevensanderson @bleroy @humancompiler @osbornm @anurse I'm sure I'm missing a few, and I'll update the list. Building a Twitter network that follows topics you're interested in allows you to use other tools like Cadmus to automatically summarize top content by leveraging the collective input of many users. Twitter Search with Topsy You can search Twitter for hashtags (like #aspnet, #aspnetmvc, and #webmatrix) to get a raw view of what people are talking about on Twitter. Twitter's search is pretty poor; I prefer Topsy. Here's an example search for the #aspnetmvc hashtag: http://topsy.com/s?q=%23aspnetmvc You can also do combined queries for several tags: http://topsy.com/s?q=%23aspnetmvc+OR+%23aspnet+OR+%23webmatrix Paper.li Paper.li is a handy service that builds a custom daily newspaper based on your social network. They've turned a lot of people off by automatically tweeting "The SuperDevFoo Daily is out!!!" messages (which can be turned off), but if you're ignoring them because of those message, you're missing out on a handy, free service. My paper.li page includes content across a lot of interests, including ASP.NET: http://paper.li/jongalloway When I want to drill into a specific tag, though, I'll just look at the Paper.li post for that hashtag. For example, here's the #aspnetmvc paper.li page: http://paper.li/tag/aspnetmvc Delicious I mentioned previously that I use Delicious for managing site links. I also use their network and search features. The tag based search is pretty good: Even better, though, is that I can see who's bookmarked these links, and add them to my Delicious network. After having built out a network, I can optimize by doing less searching and more leaching leveraging of collective intelligence. Community Sites I scan DotNetKicks, the weblogs.asp.net combined feed, and the ASP.NET Community page, CodeBetter, Los Techies,  CodeProject,  and DotNetSlackers from time to time. They're hit and miss, but they do offer more of an opportunity for finding original content which others may have missed. Terms of Enrampagement When someone's on a tear, I just manually check their sites more often. I could use RSS for that, but it changes pretty often. I just keep a mental note of people who are cranking out a lot of good content and check their sites more often. What works for you?

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  • How can I print a batch of files with custom printer settings?

    - by Li-aung Yip
    I have a collection of A3-size (tabloid size) PDF drawings which I would like to print as a batch. The particular printer I am using doesn't automatically check the paper size of the document - it always defaults to A4 (letter) size paper unless told otherwise. I need to go into the printer settings and tell the printer to use A3 size paper. A batch printing utility like DarkStorm's Batch Print Handler would be good for this. However this particular utility doesn't support changing the paper size settings or other printer settings. How can I go about batch printing these PDFs with a particular paper size?

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  • Wacom Bamboo tablet for Doctors

    - by thandasoru
    My friend is a Skin specialist (Tricologist) and she has a computer with WinXP in her office. She asked me if I can recommend a hardware which would enable her to write on a graphics tablet that would appear on the screen. Her requirement is thus: There is a prescription paper, a sheet of paper (A4 size) which has a letter head (With the title of the Clinic, Doctor's name etc). The exact image of the paper is available on the Computer. She takes the pictures of the patient's head with a camera and pastes the photo over the sheet of paper. So the top half of the prescription paper will have the photo of the patient's head. In the second half, she wants to write the medication required. I have heard of Bamboo graphics tablet and I saw video in Youtube. But I am not sure if it would be the right solution for her. Can anyone please advise me on this?

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  • Would this violate any copyright issues?

    - by Farhad
    I am currently publishing a paper on skin detection. However, I need to find the appropriate histogram bin size for each colorspace. I recently came upon a paper that published what it found to be the ideal bin size. The paper can be found at: http://www.inf.pucrs.br/~pinho/CG/Trabalhos/DetectaPele/Artigos/OPTIMUM%20COLOR%20SPACES%20FOR%20SKIN%20DETECTION.pdf. I am specifically talking about Table 1. If I cite the source, would it be okay for me to use data from the table? Note that I cannot contact the author of the paper.

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  • Friday Spotlight: The Value of Oracle Linux

    - by Chris Kawalek
    Happy Friday! Our spotlight this week is on a brand new white paper, chock full of fantastic information about Oracle Linux. From the intro to Oracle Linux - Maximize Value, Minimize Cost: "This paper describes the savings and efficiencies that an IT department can realize by choosing Oracle Linux as their enterprise standard. It highlights sample deployments and explains how deploying Oracle Linux can reduce operational costs and result in less downtime, improved productivity, and greater opportunities for revenue generation.?" The paper explains exactly how Oracle Linux can reduce costs, and goes into some of the features of Oracle Linux that can make it more valuable for your organization. Read the paper now. Have a great week! -Chris 

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  • How the SPARC T4 Processor Optimizes Throughput Capacity: A Case Study

    - by Ruud
    This white paper demonstrates the architected latency hiding features of Oracle’s UltraSPARC T2+ and SPARC T4 processors That is the first sentence from this technical white paper, but what does it exactly mean? Let's consider a very simple example, the computation of a = b + c. This boils down to the following (pseudo-assembler) instructions that need to be executed: load @b, r1 load @c, r2 add r1,r2,r3 store r3, @a The first two instructions load variables b and c from an address in memory (here symbolized by @b and @c respectively). These values go into registers r1 and r2. The third instruction adds the values in r1 and r2. The result goes into register r3. The fourth instruction stores the contents of r3 into the memory address symbolized by @a. If we're lucky, both b and c are in a nearby cache and the load instructions only take a few processor cycles to execute. That is the good case, but what if b or c, or both, have to come from very far away? Perhaps both of them are in the main memory and then it easily takes hundreds of cycles for the values to arrive in the registers. Meanwhile the processor is doing nothing and simply waits for the data to arrive. Actually, it does something. It burns cycles while waiting. That is a waste of time and energy. Why not use these cycles to execute instructions from another application or thread in case of a parallel program? That is exactly what latency hiding on the SPARC T-Series processors does. It is a hardware feature totally transparent to the user and application. As soon as there is a delay in the execution, the hardware uses these otherwise idle cycles to execute instructions from another process. As a result, the throughput capacity of the system improves because idle cycles are no longer wasted and therefore more jobs can be run per unit of time. This feature has been in the SPARC T-series from the beginning, so why this paper? The difference with previous publications on this topic is in the amount of detail given. How this all works under the hood is fully explained using two example programs. Starting from the assembly language instructions, it is demonstrated in what way these programs execute. To really see what is happening we go down to the processor pipeline level, where the gaps in the execution are, and show in what way these idle cycles are filled by other copies of the same program running simultaneously. Both the SPARC T4 as well as the older UltraSPARC T2+ processor are covered. You may wonder why the UltraSPARC T2+ is included. The focus of this work is on the SPARC T4 processor, but to explain the basic concept of latency hiding at this very low level, we start with the UltraSPARC T2+ processor because it is architecturally a much simpler design. From the single issue, in-order pipelines of this processor we then shift gears and cover how this all works on the much more advanced dual issue, out-of-order architecture of the T4. The analysis and performance experiments have been conducted on both processors. The results depend on the processor, but in all cases the theoretical estimates are confirmed by the experiments. If you're interested to read a lot more about this and find out how things really work under the hood, you can download a copy of the paper here. A paper like this could not have been produced without the help of several other people. I want to thank the co-author of this paper, Jared Smolens, for his very valuable contributions and our highly inspiring discussions. I'm also indebted to Thomas Nau (Ulm University, Germany), Shane Sigler and Mark Woodyard (both at Oracle) for their feedback on earlier versions of this paper. Karen Perkins (Perkins Technical Writing and Editing) and Rick Ramsey at Oracle were very helpful in providing editorial and publishing assistance.

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  • Read SQL Server Reporting Services Overview

    - by Editor
    Read an excellent, 14-page, general overview of Microsoft SQL Server 2008 Reporting Services entitled White Paper: Reporting Services in SQL Server 2008. Download the White Paper. (360 KB Microsoft Word file) White Paper: Reporting Services in SQL Server 2008 Microsoft SQL Server 2008 Reporting Services provides a complete server-based platform that is designed to support a wide variety [...]

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