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  • LLVM: bitcode with llvm-gcc (mingw) for windows

    - by TheShow
    Hi, i'm currently building a small JIT compiler. For the language I need a runtime library for some special math functions. I think the best would be to compile the lib to bitcode and link it. The compiler should be integrated in a product and as of this, it must work under windows (VC10, 64bit). So is it possible to build the math lib with the mingw llvm-gcc build an link it later with the JITed Code? Or are there any problems regarding the portability of the bitcode build with llvm-gcc under mingw? If there are problems, what solution would you suggest?

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  • java generics covariance

    - by soocracy42
    I am having trouble understanding the following article: http://www.ibm.com/developerworks/java/library/j-jtp01255.html Under, Generics are not covariant the author states, Because ln is a List, adding a Float to it seems perfectly legal. But if ln were aliased with li, then it would break the type-safety promise implicit in the definition of li -- that it is a list of integers, which is why generic types cannot be covariant. I can't understand the part where it says "if ln were aliased with li". What does the author means by alias?(reference?). The code snippet above the quoted line seems to illustrate WHAT is illegal in java and not WHY. It would be very helpful to me if somebody could explain with an example. Thanks in advance.

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  • C compiler selection in cabal package

    - by ony
    Today I've tried C compiler (Clang) for C code I use in my haskell library and found that I can gain speed increase in comparsing with my system compiler (GCC 4.4.3) from 426.404 Gbit/s to 0.823 Tbit/s So I decided to add some flags to control the way that C source file is compiled (i.e. something like use-clang, use-intel etc.). Snippet of cabal package description file: C-Sources: c_lib/tiger.c Include-Dirs: c_lib Install-Includes: tiger.h if flag(debug) GHC-Options: -debug -Wall -fno-warn-orphans CPP-Options: -DDEBUG CC-Options: -DDEBUG -g else GHC-Options: -Wall -fno-warn-orphans Question is: which options in descritpion file need to be modified to change C compiler used to compile "c_lib/tiger.c"? I did found only CC-Options.

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  • Preparing a Universal App for iPhone SDK 3.2

    - by user133611
    Hi all, I am working on a universal app, I used UISplitViewController in doing iPad application. I followed the Universal app guidelines i.e, i keep base SDK as 3.2, iPhone Target OS ad iPhone OS 3.1.3, Taget device as iPhone/iPad. And i used "Adding Runtime Checks for Newer Symbols" for UISplitViewController and UIPopOverController. Class splitVCClass = NSClassFromString(@"UISplitViewController"); if (splitVC) { UISplitViewController* mySplitViewController = [[splitVCClass alloc] init]; // Configure the split view controller. } I used this in .m files I declared UIPopOverController in .h files also "dyld: Symbol not found: _OBJC_CLASS_$_UIPopoverController Referenced from: /var/mobile/Applications/9E0CE75F-D2A9-4132-AE56-1780928BCF21/UniversalTasks.app/UniversalTasks Expected in: /System/Library/Frameworks/UIKit.framework/UIKit in /var/mobile/Applications/9E0CE75F-D2A9-4132-AE56-1780928BCF21/UniversalTasks.app/UniversalTasks" What i have to do can any one help me out

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  • Trouble compiling libpng (& zlib) using RVCT 4.0's armcc compiler

    - by Arjun
    Hi, I'm trying to compile libpng & zlib using the RVCT 4.0 armcc compiler. However armcc cannot find 'fcntl.h', which I assume is a standard C library. Cygwin has fcntl.h (and the associated files types.h and _types.h), but when I use those, I get various compilation errors. Should I be using Cygwin's version of standard C libraries, or RVCT's? If the latter is correct, where do I get RVCT's versions of fcntl.h, types.h and _types.h? Thanks! Arjun

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  • Cross-platform (microcontroller-PC) algorithm development

    - by Kyr
    Hello people! I was asked to develop a algorithm for network application on C. This project will be developed on Linux for PC and then it will be transferred to a more portable platform, something that will include a microcontroller. There are many microcontroller/companies out there that provide very nice and large libraries for TCP/IP. This software will hold statistics on the network performance. The whole idea of a cross platform (uC - PC) seems rubbish to me cause eventually the code should be written in a more platform specific way for the microcontroller, but I am not expert to judge anyway. Is there any clever way of doing this or is there a anyone that did this before? My brainstorming has "Wrapper library" and "Matlab"... Any ideas? Thx!

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  • Avoid the “Social Silo” - Learn Why and How

    - by Brian Dayton
    Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin;} I’m not going to spend any more real estate than needed on this—social media is big. Facebook hit the Billion user mark in October, that’s 1 out of every 7 humans on the planet. This past Summer (in the Northern hemisphere) Twitter passed the 400 Million Tweet/day mark. The list of social properties and data points goes on and on. Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin;} With social your customer, prospect, or constituent has pervasive access—through mobile—to a global audience, the ability to influence friends, friends of friends, and even people they will never meet. They also have the unique opportunity to forge a deeper relationship with your business—telling you what they like, what they don’t like, how you can help, and what they’d like to see more of. Are you listening? Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin;} What’s the Bottom Line for Business? Businesses need to be where their customers are—on social properties. They need to be available and responsive in those channels—24x7x365. They need to engage and communicate in new ways—sometimes in less than 140 characters and with empathy, not a 1-way megaphone. Finally, businesses need to look at social as an extension of their existing business practices. Not as a silo’d communication channel limited to marketing. Social Can’t Be a Silo – Learn Why @ Oracle CloudWorld When a business is on social networks they represent the whole business. That’s how a customer, constituent, partner or potential candidate sees it. Those organizations that have moved on the opportunity to build closer relationships through social marketing have already made the first step. Social Selling, Service, eCommerce, and Recruiting are external-facing opportunities that leading organizations are moving on right now. This strategy, one of weaving social into and across your business processes—and leveraging social concepts and technologies for internal collaboration—is something you can learn about during an Oracle CloudWorld event in a city near you. You’ll hear and see social relationship management concepts, best-practices, and recommendations woven into topics, discussions, and demonstrations throughout the event—from Marketing and Sales to Service and Human Resources. Stay Tuned and Avoid Potholes By all indications social is here to stay but it’s moving fast and social business strategies are evolving rapidly. At Oracle CloudWorld you’ll also get the opportunity to learn how to avoid some of the potholes on the road to #socialbusiness. Stay tuned to this blog. In future posts I’ll cover some of those potholes including the challenges of Social@Scale and Parallel Processes. Jump-start your social business strategy or learn how to refine and expand what you’re doing already at Oracle CloudWorld. Want to learn more about what Oracle is doing in social? Check out www.oracle.com/social or, if you're looking for a quick read my co-worker, Pat Ma, has a great post on this blog summarizing some popular Social Relationship Management use cases.

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  • Building webparts with Visual Studio 2010 Express

    - by MalphasWats
    Hi, I'm trying to get started with building my own webparts, planning to follow this MSDN article. I've downloaded Visual C# 2010 Express - I'm not quite at the point where I feel comfortable dropping 1000 big ones yet, and I installed Visual Web Developer 2010 Express via the WPInstaller. Following through the tutorial, aside from the fact that I don't get the option to create a "Web Control Library", a gap I filled with this article, I can't seem to find the sn.exe tool (or the "Visual Studio 2005 Command Prompt"!). I know it's not quite a direct programming related question, but I can't even get the thing going yet! Any help is appreciated. Thanks EDIT:- I think I may be jumping the gun quite considerably, I wrote a simple hello world example and tried to build it but it doesn't have any references to the Microsoft.SharePoint packages and they don't appear in my lists. Am I understanding some more research I've done (namely this) correctly, in that I have to actually have a full installation of actual SharePoint on the machine I'm developing on?

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  • How to move or position a legend in ggplot2

    - by Dan Goldstein
    I'm trying to create a ggplot2 plot with the legend beneath the plot. The ggplot2 book says on p 112 "The position and justification of legends are controlled by the theme setting legend.position, and the value can be right, left, top, bottom, none (no legend), or a numeric position". The following code works (since "right" it is the default), and it also works with "none" as the legend position, but "left", "top", "bottom", all fail with "Error in grid.Call.graphics("L_setviewport", pvp, TRUE) : Non-finite location and/or size for viewport" library(ggplot2) (myDat <- data.frame(cbind(VarX=10:1, VarY=runif(10)), Descrip=sample(LETTERS[1:3], 10, replace=TRUE))) qplot(VarX,VarY, data=myDat, shape=Descrip) + opts(legend.position="right") What am I doing wrong? Re-positioning a legend must be incredibly common, so I figure it's me.

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  • java rest web service RuntimeException WEB9033

    - by user272483
    hi, i'm developing a rest web service in java. i'm using htmlparser library on it. but when i try to run service i'm getting this exception. i can build it successfully. and org.htmlparser.beans.StringBean class exists in project. exception javax.servlet.ServletException: java.lang.RuntimeException: WEB9033: Unable to load class with name [org.htmlparser.beans.StringBean], reason: java.lang.NoClassDefFoundError: org/htmlparser/visitors/NodeVisitor root cause java.lang.RuntimeException: WEB9033: Unable to load class with name [org.htmlparser.beans.StringBean], reason: java.lang.NoClassDefFoundError: org/htmlparser/visitors/NodeVisitor root cause java.lang.NoClassDefFoundError: org/htmlparser/visitors/NodeVisitor root cause java.lang.ClassNotFoundException: org.htmlparser.visitors.NodeVisitor

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  • Rails 3 Server Startup problem with fastercsv

    - by Anand
    I have a rails 2.3.5 app getting upgraded to Rails 3. I did every thing I am required to do for upgrading and when I start the rails server using rails server it gives me this Please switch to Ruby 1.9's standard CSV library. It's FasterCSV plus support for Ruby 1.9's m17n encoding engine. I am using ruby-1.9.2-p0 and have fastercsv (1.5.3) gem installed. with the help of puts statements, i was able to track down where the error occurred. i found that the execution stops at this line Bundler.require(:default, Rails.env) if defined?(Bundler) in application.rb file. I tried many things but none worked .. please help..

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  • What is so bad about using SQL INNER JOIN

    - by Stephen B. Burris Jr.
    Everytime a database diagram gets looked out, one area people are critical of is inner joins. They look at them hard and has questions to see if an inner join really needs to be there. Simple Library Example: A many-to-many relationship is normally defined in SQL with three tables: Book, Category, BookCategory. In this situation, Category is a table that contains two columns: ID, CategoryName. In this situation, I have gotten questions about the Category table, is it need? Can it be used as a lookup table, and in the BookCategory table store the CategoryName instead of the CategoryID to stop from having to do an additional INNER JOIN. (For this question, we are going to ignore the changing, deleting of any CategoryNames) The question is, what is so bad about inner joins? At what point is doing them a negative thing (general guidelines like # of transactions, # of records, # of joins in a statement, etc)?

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  • How do I set DateTimeStamp on file after uploading to FTP?

    - by Anthony Brien
    I have an application that deploys game data files to different gaming consoles. If matching files on the users machine and the console have identical size and dates, they must not be re-deployed. On Xbox, this is easily accomplished because an XDK library used to upload files on the console allows me to set the date on the uploaded files to match the dates on the user's machine. On Ps3 however, I use an FTP service running on the console. I use WebClient.UploadFileAsync to upload files to the console. However, I cannot figure out how I can set the uploaded file's date timestamp, leaving me with only the file size to determine identical files which is unsafe. I was wondering if there was a way to set a file's date timestamp through the WebClient interface?

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  • Distribute pre-compiled python extension module with distutils

    - by Toji
    Quick one today: I'm learning the in's and out's of Pythons distutils library, and I would like to include a python extension module (.pyd) with my package. I know of course that the recommended way is to have distutils compile the extension at the time the package is created, but this is a fairly complex extension spanning many source files and referencing several external libs so it's going to take some significant playing to get everything working right. In the meantime I have a known working build of the extension coming out of Visual Studio, and would like to use it in the installer as a temporary solution to allow me to focus on other issues. I can't specify it as a module, however, since those apparently must have an explicit .py extension. How could I indicate in my setup.py that I want to include a pre-compiled extension module? (Python 3.1, if it matters)

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  • Can someone recommend a bells and whistles CSS framework?

    - by Ali A
    I am looking for a bells and whistles CSS framework. I have found a number online that deal with "grids", and some that deal with "typography" and others that deal with "resetting". What I have not found is something that will give my web applications a consistent reusable style or theme. I guess it would have to have a number of predefined elements that do things, for example: div.boxed {...} And then a number of themes or plugins that provide these in a consistent way. Javascript toolkits like ExtJS, YUI, and also GWT have their own skinability, and I guess this is the featureset that I want, but independent of any Javascript library. (Open source would be best, but we don't mind paying) Edit: 5 good answers, but I have seen all those frameworks, and they are not enough of what I am looking for. Perhaps what I am looking for doesn't exist. Or I haven't explained properly. I will give them a good going over and see.

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  • Websphere MQ 7.0 + jars compatible with 5.3 and 6.0 MQSeries servers ?

    - by avinash
    I tried connecting jms client with 5.3 / 6.0 MQseries client jars to 7.0+ server, but it threw follwoing exception com.ibm.mq.MQException: MQJE001: Completion Code 2, Reason 2423 at com.ibm.mq.MQQueueManager.sequentialConstruct(MQQueueManager.java:904) at com.ibm.mq.MQQueueManager.(MQQueueManager.java:865) at com.ibm.mq.MQSPIQueueManager.(MQSPIQueueManager.java:83) at com.ibm.mq.jms.MQConnection.createQM(MQConnection.java:2009) at com.ibm.mq.jms.MQConnection.createQMNonXA(MQConnection.java:1496) at com.ibm.mq.jms.MQQueueAgentThread.setup(MQQueueAgentThread.java:306) at com.ibm.mq.jms.MQQueueAgentThread.run(MQQueueAgentThread.java:1672) at java.lang.Thread.run(Thread.java:570) I do understand from http://www.ibm.com/developerworks/websphere/library/techarticles/0704_xu/0704_xu.html that it's not possible to use previous version client libs. But my question is are these latest client libs backward compatible with 5.3 / 6.0 servers ?

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  • How to scan the wireless devices which exist on the network

    - by amexn
    Now my team working in a network project using windows application c#. How to scan the wireless devices which exist on the network.The functionality is exactly the same thing that you see in the existing windows utilities within the windows operating system. I'm sure you experienced when you plug a wireless laptop card in, it brings up a window that shows you all of the access points it detects for connecting to. How to capture this information listed below MAC Address IP Address SSID Channel Timestamp Cipher type Encryption level Signal Strength Did i use Kismet or NetStumbler. Please suggest good library/code

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  • Share application in local network

    - by hedgehogrider
    I would like to eventually create a managerial program that shares and updates information for multiple computers that are on the same network. I am fairly familiar with Python, C++ and a bit of Java, is there a library I could use with any of these languages to design such a program? I could probably create the local interface from where I am right now, but when it comes to packing and sharing data I could not be more clueless; any advice would be platinum. The program will need to differentiate between administrative and user access if that makes a difference.

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  • Is there an HTML browser rendering engine for Ruby?

    - by Jose
    Given a URL, I would like to be able to render the returned HTML to know width and height for each div, fonts' size for each piece of text, color of each element, position of each element on screen, etc. A possible approach could be traversing the DOM tree with Hpricot and checking CSS style by parsing the associated stylesheet using css_parser gem. But this would not consider default styles, inheritance, floats, etc. In Java there's Cobra, a Java Web Renderer, which is able to render a web page and query attributes like width, font size, etc. for each fragment. I could use Cobra with JRuby or similar solutions, but prefer a Ruby native tool. Is there any library like this for Ruby?

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  • ruby / rails / mysql performance degraded on Snow Leopard

    - by adamaig
    I've burned a bunch of hours on this. I'm not having problems getting things to build, but I am seeing that my test suite runs about 2x slower than when I was on OS X 10.5.x . I've spent a lot of time playing around with different optimization settings (learning to avoid homebrew's llvm-gcc compilation). I've just learned that I needed to tweaks /Library/Preferences/SystemConfiguration/com.apple.Boot.plist in order to get the kernel to boot in 64 bit mode. However, my rails app is still running a bit slower than before, even after warming up the mysql server. So what performance tweaks might i need to look into? Right now the stock ruby 1.8.7 runs faster than 1.9.1 for some things, and I'd really like to know if there is anything I should be looking for. All my dev software has been compiled for x86_64, mysql with -O2 optimization, using regular gcc (not llvm-gcc).

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  • Exposing .NET enums to COM clients{VBScript}

    - by Codex
    Am trying create of PoC for exposing/invoking various .NET objects from COM clients. The .NET library contains some classes and Enums. Am able to successfully access the classes in VBScript but not able to access the Enums. I know that Enums are value types and hence 'CreateObject' wont work in this case. But am able to access the same Enum in VBA code. Questions: How can I access the enums in VBScript? Why does the behaviour differ in the two COM clients? If VBA object browser can see the enum, why cant VBScript allow me to create one? .NET [ComVisible(true)] [GuidAttribute("ebc25cf6-9120-4283-b972-0e5520d0000E")] public enum Currency { GBP = CurrencyConvertorBL.CurrencyConvertorRef.Currency.GBP, USD = CurrencyConvertorBL.CurrencyConvertorRef.Currency.USD, INR = CurrencyConvertorBL.CurrencyConvertorRef.Currency.INR, AUD = CurrencyConvertorBL.CurrencyConvertorRef.Currency.AUD } VBA Private Function ConvertCurrency(fromCurrency As Currency, toCurrency As Currency) As Double VBScript ??? Set currencyConvertorCCY = CreateObject("CurrencyConvertorBL.Currency") Thanks in advance.

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  • WinForms HTML visualizing controls comparison

    - by DarkDeny
    Hello all! I am working on some project which requires some HTML visualizing control (WinForms). Currently I am aware only of two such a controls: AxWebBrowser (as far as I understand this is IE-based ActiveX control for winforms) Nabu HTMLView (open source library with visualizing capabilities). Are there any other choices? What are their cons and pros? How configurable they are? For example I want to disable navigation and scripts, hook onto loading methods to override resources loading and so on.

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  • Oracle Expands Sun Blade Portfolio for Cloud and Highly Virtualized Environments

    - by Ferhat Hatay
    Oracle announced the expansion of Sun Blade Portfolio for cloud and highly virtualized environments that deliver powerful performance and simplified management as tightly integrated systems.  Along with the SPARC T3-1B blade server, Oracle VM blade cluster reference configuration and Oracle's optimized solution for Oracle WebLogic Suite, Oracle introduced the dual-node Sun Blade X6275 M2 server module with some impressive benchmark results.   Benchmarks on the Sun Blade X6275 M2 server module demonstrate the outstanding performance characteristics critical for running varied commercial applications used in cloud and highly virtualized environments.  These include best-in-class SPEC CPU2006 results with the Intel Xeon processor 5600 series, six Fluent world records and 1.8 times the price-performance of the IBM Power 755 running NAMD, a prominent bio-informatics workload.   Benchmarks for Sun Blade X6275 M2 server module  SPEC CPU2006  The Sun Blade X6275 M2 server module demonstrated best in class SPECint_rate2006 results for all published results using the Intel Xeon processor 5600 series, with a result of 679.  This result is 97% better than the HP BL460c G7 blade, 80% better than the IBM HS22V blade, and 79% better than the Dell M710 blade.  This result demonstrates the density advantage of the new Oracle's server module for space-constrained data centers.     Sun Blade X6275M2 (2 Nodes, Intel Xeon X5670 2.93GHz) - 679 SPECint_rate2006; HP ProLiant BL460c G7 (2.93 GHz, Intel Xeon X5670) - 347 SPECint_rate2006; IBM BladeCenter HS22V (Intel Xeon X5680)  - 377 SPECint_rate2006; Dell PowerEdge M710 (Intel Xeon X5680, 3.33 GHz) - 380 SPECint_rate2006.  SPEC, SPECint, SPECfp reg tm of Standard Performance Evaluation Corporation. Results from www.spec.org as of 11/24/2010 and this report.    For more specifics about these results, please go to see http://blogs.sun.com/BestPerf   Fluent The Sun Fire X6275 M2 server module produced world-record results on each of the six standard cases in the current "FLUENT 12" benchmark test suite at 8-, 12-, 24-, 32-, 64- and 96-core configurations. These results beat the most recent QLogic score with IBM DX 360 M series platforms and QLogic "Truescale" interconnects.  Results on sedan_4m test case on the Sun Blade X6275 M2 server module are 23% better than the HP C7000 system, and 20% better than the IBM DX 360 M2; Dell has not posted a result for this test case.  Results can be found at the FLUENT website.   ANSYS's FLUENT software solves fluid flow problems, and is based on a numerical technique called computational fluid dynamics (CFD), which is used in the automotive, aerospace, and consumer products industries. The FLUENT 12 benchmark test suite consists of seven models that are well suited for multi-node clustered environments and representative of modern engineering CFD clusters. Vendors benchmark their systems with the principal objective of providing comparative performance information for FLUENT software that, among other things, depends on compilers, optimization, interconnect, and the performance characteristics of the hardware.   FLUENT application performance is representative of other commercial applications that require memory and CPU resources to be available in a scalable cluster-ready format.  FLUENT benchmark has six conventional test cases (eddy_417k, turbo_500k, aircraft_2m, sedan_4m, truck_14m, truck_poly_14m) at various core counts.   All information on the FLUENT website (http://www.fluent.com) is Copyrighted1995-2010 by ANSYS Inc. Results as of November 24, 2010. For more specifics about these results, please go to see http://blogs.sun.com/BestPerf   NAMD Results on the Sun Blade X6275 M2 server module running NAMD (a parallel molecular dynamics code designed for high-performance simulation of large biomolecular systems) show up to a 1.8X better price/performance than IBM's Power 7-based system.  For space-constrained environments, the ultra-dense Sun Blade X6275 M2 server module provides a 1.7X better price/performance per rack unit than IBM's system.     IBM Power 755 4-way Cluster (16U). Total price for cluster: $324,212. See IBM United States Hardware Announcement 110-008, dated February 9, 2010, pp. 4, 21 and 39-46.  Sun Blade X6275 M2 8-Blade Cluster (10U). Total price for cluster:  $193,939. Price/performance and performance/RU comparisons based on f1ATPase molecule test results. Sun Blade X6275 M2 cluster: $3,568/step/sec, 5.435 step/sec/RU. IBM Power 755 cluster: $6,355/step/sec, 3.189 step/sec/U. See http://www-03.ibm.com/systems/power/hardware/reports/system_perf.html. See http://www.ks.uiuc.edu/Research/namd/performance.html for more information, results as of 11/24/10.   For more specifics about these results, please go to see http://blogs.sun.com/BestPerf   Reverse Time Migration The Reverse Time Migration is heavily used in geophysical imaging and modeling for Oil & Gas Exploration.  The Sun Blade X6275 M2 server module showed up to a 40% performance improvement over the previous generation server module with super-linear scalability to 16 nodes for the 9-Point Stencil used in this Reverse Time Migration computational kernel.  The balanced combination of Oracle's Sun Storage 7410 system with the Sun Blade X6275 M2 server module cluster showed linear scalability for the total application throughput, including the I/O and MPI communication, to produce a final 3-D seismic depth imaged cube for interpretation. The final image write time from the Sun Blade X6275 M2 server module nodes to Oracle's Sun Storage 7410 system achieved 10GbE line speed of 1.25 GBytes/second or better performance. Between subsequent runs, the effects of I/O buffer caching on the Sun Blade X6275 M2 server module nodes and write optimized caching on the Sun Storage 7410 system gave up to 1.8 GBytes/second effective write performance. The performance results and characterization of this Reverse Time Migration benchmark could serve as a useful measure for many other I/O intensive commercial applications. 3D VTI Reverse Time Migration Seismic Depth Imaging, see http://blogs.sun.com/BestPerf/entry/3d_vti_reverse_time_migration for more information, results as of 11/14/2010.                            

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  • making urllib request in Python from the client side

    - by mridang
    Hi Guys, I've written a Python application that makes web requests using the urllib2 library after which it scrapes the data. I could deploy this as a web application which means all urllib2 requests go through my web-server. This leads to the danger of the server's IP being banned due to the high number of web requests for many users. The other option is to create an desktop application which I don't want to do. Is there any way I could deploy my application so that I can get my web-requests through the client side. One way was to use Jython to create an applet but I've read that Java applets can only make web-requests to the server it is deployed on and the only way to to circumvent this is to create a server side proxy which leads us back to the problem of the server's ip getting banned. This might sounds sound like and impossible situation and I'll probably end up creating a desktop application but I thought I'd ask if anyone knew of an alternate solution. Thanks.

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  • Using Silverlight 4 with ODBC

    - by user1384831
    I'm completely new to Silverlight and I want to connect to a Netezza database with an ODBC connection and pull records to display nicely in Silverlight. What's the easiest way to do this? From some research, it seems creating a WCF RIA service is what most people do ( http://www.codeproject.com/Articles/354715/Creating-a-WCF-RIA-Services-Class-Library-for-a-Si ) but the process seems a bit convoluted. Coming from an ASP.net background, could I do something simpler like creating an ODBC connection in the code-behind (using System.Data.ODBC functionality), executing a query, storing the returned records in a Datatable and then binding that to some Silverlight control?

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