Search Results

Search found 12007 results on 481 pages for 'usb speed'.

Page 365/481 | < Previous Page | 361 362 363 364 365 366 367 368 369 370 371 372  | Next Page >

• What is a good Java crawler library?

  - by DrDee

  Hi, I am about to develop a crawler in Java but don't feel like reinventing the wheel. A quick Google search gives a whole bunch of Java libraries to build a web crawler. Besides that Nutch is of course a very robust package but seems a bit too advanced for my needs. I only need to crawl a handful websites a week containing a couple of 1000 pages each. Which open source Java library would you recommend considering: speed multithreading (or even distributed) extending it with new functionality active maintained and documentation?

  Read the article

• Robust and fast checksum algorithm?

  - by bene

  Which checksum algorithm can you recommend in the following use case? I want to generate checksums of small JPEG files (~8 kB each) to check if the content changed. Using the filesystem's date modified is unfortunately not an option. The checksum need not be cryptographically strong but it should robustly indicate changes of any size. The second criterion is speed since it should be possible to process at least hundreds of images per second (on a modern CPU). The calculation will be done on a server with several clients. The clients send the images over Gigabit TCP to the server. So there's no disk I/O as bottleneck.

  Read the article

• Fastest way to call a COM objects method without using a RCW

  - by Nathan W

  I'm trying to find the cleanest and fastest way for calling a COM objects methods. I was using a RCW for the object but every time a new version of the third party COM object comes out its GUID changes which then renders the RCW useless, so I had to change and start using Type mytype = Type.GetTypeFromProgID("MyCOMApp.Application"); so that every time a new version of the COM object comes out I don't have to recomplie and redeploy my app. At the moment I am using refelection like mytype.InvokeMemeber but I feel it is so slow compared to just calling the RCW. How does everyone else tackle the problem of changing 3rd party COM object versions, but still maintaining the speed of a RCW?

  Read the article

• SharePoint 2007 Central Admin w3wp.exe process consumin 99% CPU

  - by Matrich

  Hi, I have been running an intranet using SharePoint 2007 for over a year and all has been working fine. However, after some time, I realized that the intranet portal was slow. Trying to access the Central Admin over another computer not the SharePoint server also became an issue. So I logged onto the real SharePoint Server and it took some ages to login and then was so slow even on the server unlike other times. When I checked the Task Manager, I found out that w3wp.exe was consuming 99% of the CPU speed. When I restarted the Central Admin App Pool, everything came back to normal and all was running well but after a few minutes (15 or so), it again became slow. I have checked the Event Logs and nothing conclusive was there to help me out. Anyone who has had this experience? or has any good resource? Please help. Thanks in advance

  Read the article

• How to setup matlab for parallel processing on Amazon EC2?

  - by JohnIdol

  I just setup a Extra Large Heavy Computation EC2 instance to throw it at my Genetic Algorithms problem, hoping to speed up things. This instance has 8 Intel Xeon processors (around 2.4Ghz each) and 7 Gigs of RAM. On my machine I have an Intel Core Duo, and matlab is able to work with my two cores just fine. On the EC2 instance though, matlab only is capable of detecting 1 out of 8 processors. Obviously the difference is that I have my 2 cores on a single processor, while the EC2 instance has 8 distinct processors. My question is, how do I get matlab to work with those 8 processors? I found this paper, but it seems related to setting up matlab with multiple EC2 instances, which is not my problem. Any help appreciated!

  Read the article

• Storing a large list in isolatedStorage on WP7

  - by Ra

  I'm storing a List with around 3,000 objects in Isolatedstorage using Xml serialize. It takes too long to deserialize this and I was wondering if you have any recommendations to speed it up. The time is tolerable to deserialize up to 500 objects, but takes forever to deserialize 3000. Does it take longer just on the emulator and will be faster on the phone? I did a whole bunch of searching and some article said to use a binary stream reader, but I can't find it. Whether I store in binary or xml doesn't matter, I just want to persist the List. I don't want to look at asynchronous loading just yet...

  Read the article

• Core Data iPhone how often should I call [managedObjectContext save:&error] when doing 50k record in

  - by jamone

  I will be doing an occiasional import from XML into core data. I have around 50k entities that will be added. My question is how often should I call [managedObjectContext save:&error]. For every new entity added, or every x entities, or just at the end of the 50k import? I currently am calling it for each entity and tried only doing it for around every 10k and import speed went up drastically but after the first 30k it would crash with: *** Terminating app due to uncaught exception 'NSGenericException', reason: '*** Collection <NSCFSet: 0x13e760> was mutated while being enumerated.' Before I spend too much time trying to diagnose what is going on there I figured I'd check if its ok to not call save on every entity? Is the # of entities before calling save limited by the amount of memory those entities are using?

  Read the article

• High volume SVM (machine learning) system

  - by flyingcrab

  I working on a possible machine learning project that would be expected to do high speed computations for machine learning using SVM (support vector machines) and possibly some ANN. I'm resonably comfortable working on matlab with these, but primarly in small datasets, just for experimentation. I'm wondering if this matlab based approach will scale? or should i be looking into something else? C++ / gpu based computing? java wrapping of the matlab code and pushing it onto app engine? Incidentally, there seems to be a lot fo literature on GPUs, but not much on how useful they are on machine learning applications using matlab, & the cheapest CUDA enlabled GPU money can buy? is it even worth the trouble?

  Read the article

• netlogo programming question - catalyst implementation part 2

  - by user286190

  hi the catalyst speeds up the reaction but remains unchanged after the reaction has taken place i tried the following code breed [catalysts catalyst] breed [chemical-x chemical-x] ;then the forward reaction is sped up by the existence of catalysts to react-forward let num-catalysts count catalysts ;speed up by num-catalysts ;... end and it works fine but I want to make it so that the catalyst can be switched on and off with the 'switch' button ..so one can see the effects with and without the catalyst..i tried putting a switch in but catalyst has already been defined Also i want to make the catalyst visible so one can see it in the actual implementation (in the world) like making it a turtle is there are another way to implement this apart from using breeds i tried making the catalyst a turtle but it doesnt work ; Make catalyst visible in implementation clear-all crt catalysts 100 ask catalysts [ set color white ] show [breed] of one-of catalysts ; prints catalysts any help will be greatly appreciated thank you

  Read the article

• Sprite movement

  - by Lemmons

  Hi everyone. I'm ripping my hair out over this one. For some odd reason I cannot find out / think of how to move a sprite in SFML and or SDL. The tutorials I've looked at for both libraries state nothing about this; so I assume that it's more of a C++ thing than a library thing. So I was wondering; how do you move a sprite? (When I say move, I mean have the sprite "glide" across the window at a set speed)

  Read the article

• Sound Effects/Manipulation?

  - by Adam

  Hello, I am creating an android app that basically records an applies an "Effect" on the audio track then plays it back. I got my app to record an play back but I am stuck an not sure where do go from here. I have been Googling for days now trying to find a open source audio library or some way to change the audio after I record it. I currently have it setup to play back using SoundPool an I't lets me speed up an slow down the audio. I would like to do things like change pitch an add echo etc. I will appreciate any responses because I am totally stumped right now. Thanks Adam

  Read the article

• How significant is the bazaar performance factor?

  - by memodda

  I hear all this stuff about bazaar being slower than git. I haven't used too much distributed version control yet, but in Bazaar vs. Git on the bazaar site, they say that most complaints about performance aren't true anymore. Have you found this to be true? Is performance pretty much on par now? I've heard that speed can affect workflow (people are more likely to do good thing X if X is fast). What specific cases does performance currently affect workflow in bazaar vs other systems (especially git), and how? I'm just trying to get at why performance is of particular importance. Usually when I check something in or update it, I expect it to take a little while, but it doesn't matter. I commit/update when I have a second, so it doesn't interfere with my productivity. But then I haven't used DVCS yet, so maybe that has something to do with it?

  Read the article

• Floating point conversion from Fixed point algorithm

  - by Viks

  Hi, I have an application which is using 24 bit fixed point calculation.I am porting it to a hardware which does support floating point, so for speed optimization I need to convert all fixed point based calculation to floating point based calculation. For this code snippet, It is calculating mantissa for(i=0;i<8207;i++) { // Do n^8/7 calculation and store // it in mantissa and exponent, scaled to // fixed point precision. } So since this calculation, does convert an integer to mantissa and exponent scaled to fixed point precision(23 bit). When I tried converting it to float, by dividing the mantissa part by precision bits and subtracting the exponent part by precision bit, it really does' t work. Please help suggesting a better way of doing it.

  Read the article

• Noob-Ready Cython Tutorials

  - by spearfire

  I know a bunch of scripting languages, (python, ruby, lua, php) but I don't know any compiled languages like C/C++ , I wanted to try and speed up some python code using cython, which is essentially a python - C compiler, aimed at creating C extensions for python. Basically you code in a stricter version of python which compiles into C - native code. here's the problem, I don't know C, yet the cython documentation is aimed at people who obviously already know C (nothing is explained, only presented), and is of no help to me, I need to know if there are any good cython tutorials aimed at python programmers, or if I'm gonna have to learn C before I learn Cython. bear in mind I'm a competent python programmer, i would much rather learn cython from the perspective of the language I'm already good at, rather than learn a whole new language in order to learn cython. 1) PLEASE don't recommend psyco edit: ANY information that will help understand the oficial cython docs is useful information

  Read the article

• Remote iPhone / xCode application development?

  - by ANE

  4 java developers are new to iPod Touch/iPhone app development. They have an idea for an app. They have never used Xcode or Macs before. Instead of spending money for a new iMac or Mac Mini for each of them, my boss would like to sell them a $999 Apple server, hosted at a facility connected a single T1 line, and have all 4 people work remotely in Xcode. Is this feasible? Is anyone doing anything like this? Specifically, is 1 T1 enough for realistic remote app development? Would they have to work in black & white via Logmein or Gotomeeting to get decent speed? Can four people work remotely together on an Xcode project at the same time? Do they absolutely need their own Macs to connect their iPod Touches or iPhones physically to, or can they connect to their existing PCs with iTunes and install their in-development apps that way?

  Read the article

• PyPy -- How can it possible beat CPython?

  - by Vulcan Eager

  From the Google Open Source Blog: PyPy is a reimplementation of Python in Python, using advanced techniques to try to attain better performance than CPython. Many years of hard work have finally paid off. Our speed results often beat CPython, ranging from being slightly slower, to speedups of up to 2x on real application code, to speedups of up to 10x on small benchmarks. How is this possible? Which Python implementation was used to implement PyPy? CPython? And what are the chances of a PyPyPy or PyPyPyPy beating their score? (On a related note... why would anyone try something like this?)

  Read the article

• Ubuntu: What gcc to use when crosscompiling for the STM32 (Cortex-M3)?

  - by Johan

  Hi I'm trying to get started with the STM32 (Cortex-M3) and my plan is get this working from Ubuntu (9.04 / AMD64). To start with I got the Olimex stm32-h103 header board and the Olimex ARM-USB-OCD jtag, and on to of that I will probably use OpenOCD, gcc and Eclipse. But right now I'm looking into what version of gcc to use and how to setup that to be able to crosscompile the code. There seem to be some arm projects out there but I don't know what to start with, can somebody push me in the right direction? Thanks Johan Update: There seems almost to be what I want from codesourcery, but they seem to focus on IA32 and not AMD64. However in the supported devices I find the Cortex-M3 ARM EABI, ARM M-profile Simulator -mcpu=cortex-m3 -mthumb Update: There is a possibility to install IA32 on AMD64, so maybe the marked answer is obsolete already. Update: Found this link about crosscompile for the Cortex-M3. http://www.eluaproject.net/en_tc_cortex.html http://fanplastic.org/gcc-for-arm-eabi/

  Read the article

• XML Signature in a Web application

  - by OpenDevSoft

  Hi, We are developing an e-Banking web application for a small bank (up to 20000 clients/users). We have to implement digital signatures with X509 certificates (issued by CA on USB tokens) for signing payment information. We tried using CAPICOM but it seems that it is not working well with Windows Vista (have not tried it with Win 7). The other problem is that core banking system can process only Xml digital signatures, so we have to sign XML documents (not just a bulk-formatted text data like with CAPICOM and Win32 Crypto API). So my questions here are: Does anyone of you have similar problem and how did they solved it? Is there a plug-in, library, component or external tool (for Internet Explorer and/or Fire Fox) that supports XML Digital Signatures in a web application? Can you please recommend some of these products and write something about your experience with them? Thank you very much.

  Read the article

• Remove filter attribute after jQuery UI dialog is finished opening

  - by womp

  Using jQuery UI 1.8rc3 combined with the new jquery.effects.fade.js code, I've been able to finally apply fade-in and fade-out effects to opening the UI Dialog widgets. Hooray! $dialog.dialog({ show: { effect: "fade", options: {}, speed: 150 } } This works great - unfortunately, there's the known IE7 & 8 bug where the ClearType gets turned off by the application of an empty filter: style attribute after the fade effect is finished. I have the code to remove the filter attribute, I just can't find a good way to hook it into the event chain. The dialog's "open" and "focus" events are too soon. I need something like a "dialog opening animation is finished" callback. How can I hook up a callback to the end of the opening effect for a dialog?

  Read the article

• Remote debugging in Windows Embedded

  - by Ben Schoepke

  Hi, I'm moving from Windows CE 6 to Windows Embedded Standard 7 for a project and am wondering how remote debugging of .Net apps works with Windows Embedded target devices. In CE with VS2008 and ActiveSync (USB), I can hit F5 and my app is automatically deployed to the target device and executed so I can step through my breakpoints just like I would if I were debugging locally. Is there an equivalent remote debugging solution for Windows Embedded debugging? A quick glance through the Visual Studio "Remote Debugger" documentation makes the whole thing seem a lot clunkier/less integrated. Is there an easy way to debug applications on target devices running Windows Embedded like I would with CE? Thanks, Ben

  Read the article

• SQL code to insert multiple rows in ms-access table

  - by Thierry

  I'm trying to speed up my code and the bottleneck seems to be the individual insert statements to a Jet MDB from outside Access via ODBC. I need to insert 100 rows at a time and have to repeat that many times. It is possible to insert multiple rows in a table with SQL code? Here is some stuff that I tried but neither of them worked. Any suggestions? INSERT INTO tblSimulation (p, cfYear, cfLocation, Delta, Design, SigmaLoc, Sigma, SampleSize, Intercept) VALUES (0, 2, 8.3, 0, 1, 0.5, 0.2, 220, 3.4), (0, 2.4, 7.8, 0, 1, 0.5, 0.2, 220, 3.4), (0, 2.3, 5.9, 0, 1, 0.5, 0.2, 220, 3.4) INSERT INTO tblSimulation (p, cfYear, cfLocation, Delta, Design, SigmaLoc, Sigma, SampleSize, Intercept) VALUES (0, 2, 8.3, 0, 1, 0.5, 0.2, 220, 3.4) UNION (0, 2.4, 7.8, 0, 1, 0.5, 0.2, 220, 3.4) UNION (0, 2.3, 5.9, 0, 1, 0.5, 0.2, 220, 3.4)

  Read the article

• Install app on Motorola Backflip from AT&T

  - by eric

  I'm trying to test an app out on the Motorola Backflip with AT&T as the carrier. I checked USB debugging on the phone's Development screen. Using Eclipse, how do I get the app to load on the Backflip so I can test it? DDMS shows a device with a bunch of question marks and unkown. Seems that it only gives me the option to load the app on the SD card which doesn't do me any good. I searched and found a Motorola driver which I'm supposed to install to the adb folder. Where is that folder? I've checked the phone and on my development machine. Maybe I need new glasses?

  Read the article

• What's the best JSF implementation?

  - by Jeff

  Hey everyone, I currently have a medium size Java web application sitting on top of Spring MVC. As much as I like (no sarcasm) coding straight HTML, CSS and JS, it's not possible for me to develop as fast as I'd like. I'm looking at different RAD frameworks to speed up my development. I'm looking at JSF implementations and component libraries, Flex, GWT and a few others. As of now, Apache MyFaces (with ICEFaces) seems to be the front runner in my mind, but I'm curious to find out what you all think of that specific implementation and if the Sun implementation is any better? What's important to me is something that is stable, has an active community and that it doesn't look like there is another technology in the near future that is going to eclipse JSF (which would drive me to use a different RAD framework). Thanks in advance for the responses.

  Read the article

• How to create an Audio CD using C# or Java

  - by Elie

  I'm looking for an API that would allow me to create an audio CD from within a C# application. The CDs are to be created and closed in the same session (no rewrite required). Basically, my application locates files on behalf of a user, and, if a blank CD is present in the drive, creates an audio CD for the user. If no CD is present, it checks to see if there's a USB drive attached and copies the files there (this part I already know how to do). I would prefer to write this application in either C# or Java, as I'm most comfortable with those, but I don't know how hard it would be to create CDs using either language. There are several other questions here that deal with regular CDs, but I didn't see any discussing audio CDs.

  Read the article

• 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.

  Read the article

< Previous Page | 361 362 363 364 365 366 367 368 369 370 371 372  | Next Page >