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  • Cilk or Cilk++ or OpenMP

    - by Aman Deep Gautam
    I'm creating a multi-threaded application in Linux. here is the scenario: Suppose I am having x instance of a class BloomFilter and I have some y GB of data(greater than memory available). I need to test membership for this y GB of data in each of the bloom filter instance. It is pretty much clear that parallel programming will help to speed up the task moreover since I am only reading the data so it can be shared across all processes or threads. Now I am confused about which one to use Cilk, Cilk++ or OpenMP(which one is better). Also I am confused about which one to go for Multithreading or Multiprocessing

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  • What's a good algorithm for searching arrays N and M, in order to find elements in N that also exist

    - by GenTiradentes
    I have two arrays, N and M. they are both arbitrarily sized, though N is usually smaller than M. I want to find out what elements in N also exist in M, in the fastest way possible. To give you an example of one possible instance of the program, N is an array 12 units in size, and M is an array 1,000 units in size. I want to find which elements in N also exist in M. (There may not be any matches.) The more parallel the solution, the better. I used to use a hash map for this, but it's not quite as efficient as I'd like it to be. Typing this out, I just thought of running a binary search of M on sizeof(N) independent threads. (Using CUDA) I'll see how this works, though other suggestions are welcome.

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  • Physical Cores vs Virtual Cores in Parallelism

    - by Code Curiosity
    When it comes to virtualization, I have been deliberating on the relationship between the physical cores and the virtual cores, especially in how it effects applications employing parallelism. For example, in a VM scenario, if there are less physical cores than there are virtual cores, if that's possible, what's the effect or limits placed on the application's parallel processing? I'm asking, because in my environment, it's not disclosed as to what the physical architecture is. Is there still much advantage to parallelizing if the application lives on a dual core VM hosted on a single core physical machine?

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  • Activate thread synchronically

    - by mayap
    Hi All, I'm using .Net 4.0 parallel library. The tasks I execute, ask to run some other task, sometimes synchronically and somethimes asynchronically, dependending on some conditions which are not known in advanced. For async call, i simply create new tasks and that's it. I don't know how to handly sync call: how to run it from the same thread, maybe that sync tasks will also ask to execute sync tasks recursively. all this issue is pretty new to me. thanks in advance.

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  • Ideas on frameworks in .NET that can be used for job processing and notifications

    - by Rajat Mehta
    Scenario: We have one instance of WCF windows service which exposes contracts like: AddNewJob(Job job), GetJobs(JobQuery query) etc. This service is consumed by 70-100 instances of client which is Windows Form based .NET app. Typically the service has 50-100 inward calls/minute to add or query jobs that are stored in a table on Sql Server. The same service is also responsible for processing these jobs in real time. It queries database every 5 seconds picks up the queued jobs and starts processing them. A job has 6 states. Queued, Pre-processing, Processing, Post-processing, Completed, Failed, Locked. Another responsibility on this service is to update all clients on every state change of every job. This means almost 200+ callbacks to clients per second. Question: This whole implementation is done using WCF Duplex bindings and works perfectly fine on small number of parallel jobs. Problem arises when we scale it up to 1000 jobs at a time. The notifications don't work as expected, it leads to memory overflow etc. Is there any standard framework that can provide a clean infrastructure for handling this scenario?? Apologies for the long explanation!

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  • How do I optimize this postfix expression tree for speed?

    - by Peter Stewart
    Thanks to the help I received in this post: I have a nice, concise recursive function to traverse a tree in postfix order: deque <char*> d; void Node::postfix() { if (left != __nullptr) { left->postfix(); } if (right != __nullptr) { right->postfix(); } d.push_front(cargo); return; }; This is an expression tree. The branch nodes are operators randomly selected from an array, and the leaf nodes are values or the variable 'x', also randomly selected from an array. char *values[10]={"1.0","2.0","3.0","4.0","5.0","6.0","7.0","8.0","9.0","x"}; char *ops[4]={"+","-","*","/"}; As this will be called billions of times during a run of the genetic algorithm of which it is a part, I'd like to optimize it for speed. I have a number of questions on this topic which I will ask in separate postings. The first is: how can I get access to each 'cargo' as it is found. That is: instead of pushing 'cargo' onto a deque, and then processing the deque to get the value, I'd like to start processing it right away. I don't yet know about parallel processing in c++, but this would ideally be done concurrently on two different processors. In python, I'd make the function a generator and access succeeding 'cargo's using .next(). But I'm using c++ to speed up the python implementation. I'm thinking that this kind of tree has been around for a long time, and somebody has probably optimized it already. Any Ideas? Thanks

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  • Thread management advice - Is TPL a good idea?

    - by Ian
    I'm hoping to get some advice on the use of thread managment and hopefully the task parallel library, because I'm not sure I've been going down the correct route. Probably best is that I give an outline of what I'm trying to do. Given a Problem I need to generate a Solution using a heuristic based algorithm. I start of by calculating a base solution, this operation I don't think can be parallelised so we don't need to worry about. Once the inital solution has been generated, I want to trigger n threads, which attempt to find a better solution. These threads need to do a couple of things: They need to be initalized with a different 'optimization metric'. In other words they are attempting to optimize different things, with a precedence level set within code. This means they all run slightly different calculation engines. I'm not sure if I can do this with the TPL.. If one of the threads finds a better solution that the currently best known solution (which needs to be shared across all threads) then it needs to update the best solution, and force a number of other threads to restart (again this depends on precedence levels of the optimization metrics). I may also wish to combine certain calculations across threads (e.g. keep a union of probabilities for a certain approach to the problem). This is probably more optional though. The whole system needs to be thread safe obviously and I want it to be running as fast as possible. I tried quite an implementation that involved managing my own threads and shutting them down etc, but it started getting quite complicated, and I'm now wondering if the TPL might be better. I'm wondering if anyone can offer any general guidance? Thanks...

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  • What hash algorithms are paralellizable? Optimizing the hashing of large files utilizing on mult-co

    - by DanO
    I'm interested in optimizing the hashing of some large files (optimizing wall clock time). The I/O has been optimized well enough already and the I/O device (local SSD) is only tapped at about 25% of capacity, while one of the CPU cores is completely maxed-out. I have more cores available, and in the future will likely have even more cores. So far I've only been able to tap into more cores if I happen to need multiple hashes of the same file, say an MD5 AND a SHA256 at the same time. I can use the same I/O stream to feed two or more hash algorithms, and I get the faster algorithms done for free (as far as wall clock time). As I understand most hash algorithms, each new bit changes the entire result, and it is inherently challenging/impossible to do in parallel. Are any of the mainstream hash algorithms parallelizable? Are there any non-mainstream hashes that are parallelizable (and that have at least a sample implementation available)? As future CPUs will trend toward more cores and a leveling off in clock speed, is there any way to improve the performance of file hashing? (other than liquid nitrogen cooled overclocking?) or is it inherently non-parallelizable?

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  • OpenMP: Get total number of running threads

    - by Konrad Rudolph
    I need to know the total number of threads that my application has spawned via OpenMP. Unfortunately, the omp_get_num_threads() function does not work here since it only yields the number of threads in the current team. However, my code runs recursively (divide and conquer, basically) and I want to spawn new threads as long as there are still idle processors, but no more. Is there a way to get around the limitations of omp_get_num_threads and get the total number of running threads? If more detail is required, consider the following pseudo-code that models my workflow quite closely: function divide_and_conquer(Job job, int total_num_threads): if job.is_leaf(): # Recurrence base case. job.process() return left, right = job.divide() current_num_threads = omp_get_num_threads() if current_num_threads < total_num_threads: # (1) #pragma omp parallel num_threads(2) #pragma omp section divide_and_conquer(left, total_num_threads) #pragma omp section divide_and_conquer(right, total_num_threads) else: divide_and_conquer(left, total_num_threads) divide_and_conquer(right, total_num_threads) job = merge(left, right) If I call this code with a total_num_threads value of 4, the conditional annotated with (1) will always evaluate to true (because each thread team will contain at most two threads) and thus the code will always spawn two new threads, no matter how many threads are already running at a higher level. I am searching for a platform-independent way of determining the total number of threads that are currently running in my application.

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  • What hash algorithms are parallelizable? Optimizing the hashing of large files utilizing on multi-co

    - by DanO
    I'm interested in optimizing the hashing of some large files (optimizing wall clock time). The I/O has been optimized well enough already and the I/O device (local SSD) is only tapped at about 25% of capacity, while one of the CPU cores is completely maxed-out. I have more cores available, and in the future will likely have even more cores. So far I've only been able to tap into more cores if I happen to need multiple hashes of the same file, say an MD5 AND a SHA256 at the same time. I can use the same I/O stream to feed two or more hash algorithms, and I get the faster algorithms done for free (as far as wall clock time). As I understand most hash algorithms, each new bit changes the entire result, and it is inherently challenging/impossible to do in parallel. Are any of the mainstream hash algorithms parallelizable? Are there any non-mainstream hashes that are parallelizable (and that have at least a sample implementation available)? As future CPUs will trend toward more cores and a leveling off in clock speed, is there any way to improve the performance of file hashing? (other than liquid nitrogen cooled overclocking?) or is it inherently non-parallelizable?

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  • The best way to predict performance without actually porting the code?

    - by ardiyu07
    I believe there are people with the same experience with me, where he/she must give a (estimated) performance report of porting a program from sequential to parallel with some designated multicore hardwares, with a very few amount of time given. For instance, if a 10K LoC sequential program was given and executes on Intel i7-3770k (not vectorized) in 100 ms, how long would it take to run if one parallelizes the code to a Tesla C2075 with NVIDIA CUDA, given that all kinds of parallelizing optimization techniques were done? (but you're only given 2-4 days to report the performance? assume that you didn't know the algorithm at all. Or perhaps it'd be safer if we just assume that it's an impossible situation to finish the job) Therefore, I'm wondering, what most likely be the fastest way to give such performance report? Is it safe to calculate solely by the hardware's capability, such as GFLOPs peak and memory bandwidth rate? Is there a mathematical way to calculate it? If there is, please prove your method with the corresponding problem description and the algorithm, and also the target hardwares' specifications. Or perhaps there already exists such tool to (roughly) estimate code porting? (Please don't the answer: 'kill yourself is the fastest way.')

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  • Please help! Every Post link links to the most recent post Wordpress

    - by kwek-kwek
    I got the site up on time, with one blog post up. Later I added another one and tested it. Big problem! Any link that used to take you to the old post (ie: side-bar "Recent Posts" links) now takes you to the newest one. I tested it by adding a third post, and got the same result. This is a custom wordpress theme and I have a, page.php <?php get_header(); ?> <?php if (have_posts()) : while (have_posts()) : the_post(); ?> <div id="BodyWrap"> <!--MAIN CONT--> <div id="mainCont"> <?php get_sidebar(); ?> <?php if (is_page(array('home'))) { ;?> <div id="rotateBanner"> <div id="slide-holder"> <div id="slide-runner"> <img id="slide-img-1" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial2.jpg" class="slide" alt="" /> <img id="slide-img-5" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial5.jpg" class="slide" alt="" /> <img id="slide-img-2" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial1.jpg" class="slide" alt="" /> <img id="slide-img-6" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial6.jpg" class="slide" alt="" /> <img id="slide-img-3" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial3.jpg" class="slide" alt="" /> <img id="slide-img-7" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial7.jpg" class="slide" alt="" /> <img id="slide-img-4" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial4.jpg" class="slide" alt="" /> <img id="slide-img-8" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial8.jpg" class="slide" alt="" /> <div id="slide-controls"> <p id="slide-client" class="text" style="display:none;"><span></span></p> <p id="slide-desc" class="text" style="display:none;"></p> <p id="slide-nav" style="display:none;"></p> </div> </div> <script type="text/javascript"> if(!window.slider) var slider={};slider.data=[{"id":"slide-img-1","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-5","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-2","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-6","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-3","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-7","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-4","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-8","client":"nature beauty","desc":"nature beauty photography"}]; </script> </div> </div> <?php } ?> <?php if (is_page(array('accueil'))) { ;?> <div id="rotateBanner"> <div id="slide-holder"> <div id="slide-runner"> <img id="slide-img-1" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial1-fr.jpg" class="slide" alt="" /> <img id="slide-img-5" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial5-fr.jpg" class="slide" alt="" /> <img id="slide-img-2" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial2-fr.jpg" class="slide" alt="" /> <img id="slide-img-6" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial6-fr.jpg" class="slide" alt="" /> <img id="slide-img-3" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial3-fr.jpg" class="slide" alt="" /> <img id="slide-img-7" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial7-fr.jpg" class="slide" alt="" /> <img id="slide-img-4" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial4-fr.jpg" class="slide" alt="" /> <img id="slide-img-8" src="<?php bloginfo('template_url'); ?>/images/banner/testimonial8-fr.jpg" class="slide" alt="" /> <div id="slide-controls"> <p id="slide-client" class="text" style="display:none;"><span></span></p> <p id="slide-desc" class="text" style="display:none;"></p> <p id="slide-nav" style="display:none;"></p> </div> </div> <script type="text/javascript"> if(!window.slider) var slider={};slider.data=[{"id":"slide-img-1","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-5","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-2","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-6","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-3","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-7","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-4","client":"nature beauty","desc":"nature beauty photography"},{"id":"slide-img-8","client":"nature beauty","desc":"nature beauty photography"}]; </script> </div> </div> <?php } ?> <?php if (is_page(array('contact-us'))) { ;?> <div id="rotateBanner"> <?php custom_field_image() ?> </div> <?php } ?> <div id="mainCopy"> <div id="content"> <h2> <?php if (is_page('home','accueil')) : ?> <?php else : ?> <?php single_post_title(); ?> <?php endif; ?></h2> <?php the_content('<p class="serif">Read the rest of this page &raquo;</p>'); ?> <?php wp_link_pages(array('before' => '<p><strong>Pages:</strong> ', 'after' => '</p>', 'next_or_number' => 'number')); ?> </div> </div> <?php if (is_page(array('home','accueil'))) { ;?> <div id="rightCol2"> <div id="Fworks"> <h2>Featured work</h2> <li><img src="<?php bloginfo('template_url'); ?>/images/portage-thumb.jpg" width="234" height="92" border="0" alt="" /></li> <li><a href="<?php bloginfo('url'); ?>our-work/foundation-on-antivirals"><img src="<?php bloginfo('template_url'); ?>/images/fav-thumb.jpg" width="234" height="92" border="0" alt="" /></a></li> <li><img src="<?php bloginfo('template_url'); 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%link') ?></div> <div class="alignright"><?php next_post_link('%link &raquo;') ?></div> </div> <br class="clr" />--> <div <?php post_class() ?> id="post-<?php the_ID(); ?>"> <h2><?php the_title(); ?></h2> <div class="entry"> <?php the_content('<p class="serif">Read the rest of this entry &raquo;</p>'); ?> <?php wp_link_pages(array('before' => '<p><strong>Pages:</strong> ', 'after' => '</p>', 'next_or_number' => 'number')); ?> <?php the_tags( '<p>Tags: ', ', ', '</p>'); ?> <!--<p class="postmetadata alt"> <small> This entry was posted <?php /* This is commented, because it requires a little adjusting sometimes. You'll need to download this plugin, and follow the instructions: http://binarybonsai.com/wordpress/time-since/ */ /* $entry_datetime = abs(strtotime($post->post_date) - (60*120)); echo time_since($entry_datetime); echo ' ago'; */ ?> on <?php the_time('l, F jS, Y') ?> at <?php the_time() ?> and is filed under <?php the_category(', ') ?>. You can follow any responses to this entry through the <?php post_comments_feed_link('RSS 2.0'); ?> feed. <?php if ( comments_open() && pings_open() ) { // Both Comments and Pings are open ?> You can <a href="#respond">leave a response</a>, or <a href="<?php trackback_url(); ?>" rel="trackback">trackback</a> from your own site. <?php } elseif ( !comments_open() && pings_open() ) { // Only Pings are Open ?> Responses are currently closed, but you can <a href="<?php trackback_url(); ?> " rel="trackback">trackback</a> from your own site. <?php } elseif ( comments_open() && !pings_open() ) { // Comments are open, Pings are not ?> You can skip to the end and leave a response. Pinging is currently not allowed. <?php } elseif ( !comments_open() && !pings_open() ) { // Neither Comments, nor Pings are open ?> Both comments and pings are currently closed. <?php } edit_post_link('Edit this entry','','.'); ?> </small> </p>--> </div> </div> <?php comments_template(); ?> <?php endwhile; else: ?> <p>Sorry, no posts matched your criteria.</p> <?php endif; ?> </div> </div> </div> </div> <?php get_footer(); ?> index.php <?php get_header(); ?> <!--MAIN WRAP--> <div id="BodyWrap"> <!--MAIN CONT--> <div id="mainCont"> <?php get_sidebar(); ?> <div id="mainCopy"> <div id="content"> <?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?> <div id="BGHeadTitle"><h2><a href="<?php the_permalink() ?>"><?php the_title(); ?></a></h2></div> <?php the_content(); ?> <p><?php the_time('F j, Y'); ?> at <?php the_time('g:i a'); ?> | <?php the_category(', '); ?> | <?php comments_number('No comment', '1 comment', '% comments'); ?></p> <?php comments_template(); // Get wp-comments.php template ?> <?php endwhile; else: ?> <h2>Woops...</h2> <p>Sorry, no posts we're found.</p> <?php endif; ?> <p align="center"><?php posts_nav_link(); ?></p> </div> </div> </div> </div> <?php get_footer(); ?> my recent post code : <ul> <?php query_posts('cat=3,4,5&posts_per_page=5&order=ASC&orderby=date'); if ( have_posts() ) : while ( have_posts() ) : the_post()?> <li> <span class="date"><?php the_time('M j') ?></span> <a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>"><?php the_title(); ?></a> </li> <?php endwhile; ?> <?php rewind_posts(); ?> </ul> I am really stuck the site went live and when I was working on the testserver I only noticed it.view the site here »

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  • C# process restart loop

    - by Andrej
    Hi, I'm trying to make a console app that would monitor some process and restart it if it exits. So, the console app is always on, it's only job is to restart some other process. I posted my code below.. it basically works but just for one process restart... I would appriciate any help!! Thanks in advance! { System.Diagnostics.Process[] p = System.Diagnostics.Process.GetProcessesByName(SOME_PROCESS); p[0].Exited += new EventHandler(Startup_Exited); while (!p[0].HasExited) { p[0].WaitForExit(); } //Application.Run(); } private static void Startup_Exited(object sender, EventArgs e) { System.Diagnostics.Process.Start(AGAIN_THAT_SAME_PROCESS); }

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  • Javascript For-Each Loop Syntax Help

    - by radrew
    Hey guys, I've got a complex block of PHP/Javascript that isn't functioning. I'm trying to manipulate a form that contains 4 dropdown select lists. Each dropdown is dependent upon what was selected in the one above it. I apologize for the huge amount of code, but I was hoping someone might be able to spot a syntax error or something else simple that I'm missing. The form in question is located in the right sidebar of the following site: http://www.buyautocovers.com $Manufacturer_array[] = array('id' => 'all', 'text' => $this->__('Choose Make')); $Model_array[] = array('id' = 'all', 'text' = $this-('Choose Model')); $Number_array[] = array('id' = 'all', 'text' = $this-('Choose Year')); $Body_array[] = array('id' = 'all', 'text' = $this-__('Choose Body Type')); $javascript = ' // var a = new Array(); var b = new Array(); var c = new Array(); var d = new Array();'; $M_a = array(); foreach ($rows as $r) { if (!isset($M_a [$r['manufacturer']])) $Manufacturer_array[] = array('id' = $r['manufacturer'], 'text' = $r['manufacturer']); $M_a [$r['manufacturer']][$r['model']][$r['number']][$r['body']] = 1; } $i = 0; foreach ($M_a as $k =$v){ $javascript .= 'a['.$i.']="'.$k.'";b['.$i.'];c['.$i.'];=new Array('; $ii = 0; $s = ''; foreach ($M_a[$k] as $kk =$vv){ $javascript .= ($ii != 0 ? ',' : '').'"'.$kk.'"'; $ss = ''; $iii = 0; foreach ($M_a[$k][$kk] as $kkk = $vvv){ $javascript .= ($iii != 0 ? ',' : '').'"'.$kkk.'"'; $sss = ''; $iiii = 0; foreach ($M_a[$k][$kk][$kkk] as $kkkk = $vvvv){ $sss .= ($iiii != 0 ? ',' : '').'"'.$kkkk.'"'; $iiii++; } $ss .= 'd['.$i.']['.$ii.']['.$iii.']=new Array('.$sss.');'; $iii++; } $s .= 'd['.$i.']['.$ii.']=new Array('.$ss.');'; $ii++; } $javascript .= ');d['.$i.']=new Array();'.$s; $i++; } $javascript .= ' function pop_model(){ var o ="' . $this-('Choose Model') . '"; var sv = $(\'mmn_manufacturer\').value; if(sv != "all"){ var v = a.length; while(v--) if(sv == a[v]) break; for(var i = 0; i < b[v].length; i++) o+=""+b[v][i]+""; } o+=""; $(\'model_select\').innerHTML= o; $(\'number_select\').innerHTML= "' . $this-('Choose Year') . '"; } function pop_number(){ var o ="' . $this-('Choose Year') . '"; var sv = $(\'mmn_manufacturer\').value; if(sv != "all"){ var v = a.length; while(v--) if(sv == a[v]) break; var sv2 = $(\'mmn_model\').value; if(sv2 != "all"){ var v2 = b[v].length; while(v2--) if(sv2 == b[v][v2]) break; for(var i = 0; i < c[v][v2].length; i++) o+=""+c[v][v2][i]+""; } } o+=""; $(\'number_select\').innerHTML= o; $(\'body_select\').innerHTML= "' . $this-('Choose Body Type') . '"; } function pop_body(){ var o ="' . $this-__('Choose Body Type') . '"; var sv = $(\'mmn_manufacturer\').value; if(sv != "all"){ var v = a.length; while(v--) if(sv == a[v]) break; var sv2 = $(\'mmn_model\').value; if(sv2 != "all"){ var v2 = b[v].length; while(v2--) if(sv2 == b[v][v2]) break; var sv3 = $(\'mmn_number\').value; if(sv3 != "all"){ var v3 = c[v].length; while(v3--) if(sv3 == b[v]c[v2][v3]) break; for(var i = 0; i < d[v]c[v2][v3].length; i++) o+=""+d[v]c[v2][v3][i]+""; } } } o+=""; $(\'number_select\').innerHTML= o; } //]] '; $expire = time()+60*60*24*90; if (isset($_GET['Manufacturer'])){ setcookie("Manufacturer_selected", $_GET['Manufacturer'], $expire,'/'); if ($_GET['Manufacturer'] != 'all') $Manufacturer_selected_var = $_GET['Manufacturer']; } elseif (isset($_COOKIE['Manufacturer_selected']) && $_COOKIE['Manufacturer_selected'] != 'all') $Manufacturer_selected_var = $_COOKIE['Manufacturer_selected']; if (isset($_GET['Model'])){ setcookie("Model_selected", $_GET['Model'], $expire,'/'); if ($_GET['Model'] != 'all') $Model_selected_var = $_GET['Model']; } elseif (isset($_COOKIE['Model_selected']) && $_COOKIE['Model_selected'] != 'all') $Model_selected_var = $_COOKIE['Model_selected']; if (isset($_GET['Number'])){ setcookie("Number_selected", $_GET['Number'], $expire,'/'); if ($_GET['Number'] != 'all') $Number_selected_var = $_GET['Number']; } elseif (isset($_COOKIE['Number_selected']) && $_COOKIE['Number_selected'] != 'all') $Number_selected_var = $_COOKIE['Number_selected']; if (isset($_GET['Body'])){ setcookie("Body_selected", $_GET['Body'], $expire,'/'); if ($_GET['Body'] != 'all') $Body_selected_var = $_GET['Body']; } elseif (isset($_COOKIE['Body_selected']) && $_COOKIE['Body_selected'] != 'all') $Body_selected_var = $_COOKIE['Body_selected']; if (isset($Manufacturer_selected_var) && isset($M_a[$Manufacturer_selected_var])) foreach ($M_a[$Manufacturer_selected_var] as $k => $v) $Model_array[] = array('id' = $k, 'text' = $k); if (isset($Manufacturer_selected_var) && isset($Model_selected_var) && isset($M_a[$Manufacturer_selected_var][$Model_selected_var])) foreach ($M_a[$Manufacturer_selected_var][$Model_selected_var] as $k = $v) $Number_array[] = array('id' = $k, 'text' = $k); if (isset($Manufacturer_selected_var) && isset($Model_selected_var) && isset($Number_selected_var) && isset($M_a[$Manufacturer_selected_var][$Model_selected_var][$Number_selected_var])) foreach ($M_a[$Manufacturer_selected_var][$Model_selected_var][$Number_selected_var] as $k = $v) $Body_array[] = array('id' = $k, 'text' = $k); echo $javascript;

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  • jQuery Horizontal Ticker with Continuous loop

    - by Dkong
    I am using a jQuery ticker which is pretty cool. It works well with predefined content, but I want to build my tags dynamically by getting the data from a feed via the $.ajax method. http://progadv.uuuq.com/jStockTicker/ The problem is when I do this the ticker wont work, as it looks like the function might be loading before my page content has loaded. Can anbody think of a way around this? $(function() { $("#ticker").jStockTicker({interval: 45}); });

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  • Redirect with htaccess for images onto another server without redirect looping

    - by Jeff
    Hey guys, I currently have a host where my main site is hosted on. I have set up nginx on another server to mirror/cache files being requested if it doesn't have it already, in particular images and flv videos. For example: www.domain.com is my main site. www.domain.com/video/video.flv www.domain.com/images/1.png I would like to ask apache to redirect it to imgserv.domain.com (imgserv.domain.com points to another server IP) imgserv.domain.com/video/video.flv imgserv.domain.com/images/1.png Basically redirect everything with certain filetypes and preserving the structure of the URL, like flv etc. I tried something but I am getting a redirect looping error. Could someone help me out? Thank you!

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  • Why do I get garbage output when printing an int[]?

    - by Kat
    My program is suppose to count the occurrence of each character in a file ignoring upper and lower case. The method I wrote is: public int[] getCharTimes(File textFile) throws FileNotFoundException { Scanner inFile = new Scanner(textFile); int[] lower = new int[26]; char current; int other = 0; while(inFile.hasNext()){ String line = inFile.nextLine(); String line2 = line.toLowerCase(); for (int ch = 0; ch < line2.length(); ch++) { current = line2.charAt(ch); if(current >= 'a' && current <= 'z') lower[current-'a']++; else other++; } } return lower; } And is printed out using: for(int letter = 0; letter < 26; letter++) { System.out.print((char) (letter + 'a')); System.out.println(": " + ts.getCharTimes(file)); } Where ts is a TextStatistic object created earlier in my main method. However when I run my program, instead of printing out the number of how often the character occurs it prints: a: [I@f84386 b: [I@1194a4e c: [I@15d56d5 d: [I@efd552 e: [I@19dfbff f: [I@10b4b2f And I don't know what I'm doing wrong.

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  • Batch break up after call other batch file

    - by Sven Arno Jopen
    i have the problem, that my batch process breaking up each time after call a other batch file. The batch files are used to run a make process out from IBM Rhapsody. There convert the call from Rhapsody to the Visual Studio tools. So nmake will be called from the batch after make different settings. The scripts aren’t written completely from me, I only adapt theme to run under both windows architecture versions, x86 and x64. The first script (vs2005_make.bat) will be called from Rhapsody and run to the “call” statement. The second script (Vcvars_VisualStudio2005.bat) runs to the end. But the first script isn’t resume working, at this point the process break up without a error message. I'm not very familiar with batch files, this is the first time I make more than simple console commands in a batch file. So I hope I have given all information’s which needed, otherwise ask me. Here the start script (vs2005_make.bat): :: parameter 1 - Makefile which should be used :: parameter 2 - The make target mark @echo off IF "%2"=="" set target=all IF "%2"=="all" set target=all IF "%2"=="build" set target=all IF "%2"=="rebuild" set target=clean all IF "%2"=="clean" set target=clean set RegQry="HKLM\Hardware\Description\System\CentralProcessor\0" REG.exe Query %RegQry% > checkOS.txt Find /i "x86" < CheckOS.txt > StringCheck.txt IF %ERRORLEVEL%==0 ( set arch=x86 ) ELSE ( set arch=x64 ) call "%ProgramFiles%\IBM\Rhapsody752\Share\etc\Vcvars_VisualStudio2005.bat" %arch% IF %ERRORLEVEL%==0 ( set makeflags= nmake /nologo /S /F %1 %target% ) del checkOS.txt del StringCheck.txt exit and here the called script (Vcvars_VisualStudio2005.bat): :: param 1 - Processor architecture @echo off ECHO param 1 = %1 IF %1==x86 ( SET ProgrammPath=%ProgramFiles% ) ELSE IF %1==x64 ( SET ProgrammPath=%ProgramFiles(x86)% ) ELSE ( ECHO Unknowen architectur EXIT /B 1 ) SET VSINSTALLDIR="%ProgrammPath%\Microsoft Visual Studio 8\Common7\IDE" SET VCINSTALLDIR="%ProgrammPath%\Microsoft Visual Studio 8" SET FrameworkDir=C:\WINDOWS\Microsoft.NET\Framework SET FrameworkVersion=v2.0.50727 SET FrameworkSDKDir="%ProgrammPath%\Microsoft Visual Studio 8\SDK\v2.0" rem Root of Visual Studio common files. IF %VSINSTALLDIR%=="" GOTO Usage IF %VCINSTALLDIR%=="" SET VCINSTALLDIR=%VSINSTALLDIR% rem rem Root of Visual Studio ide installed files. rem SET DevEnvDir=%VSINSTALLDIR% rem rem Root of Visual C++ installed files. rem SET MSVCDir=%VCINSTALLDIR%\VC SET PATH=%DevEnvDir%;%MSVCDir%\BIN;%VCINSTALLDIR%\Common7\Tools;%VCINSTALLDIR%Common7 \Tools\bin\prerelease;%VCINSTALLDIR%\Common7\Tools\bin;%FrameworkSDKDir%\bin;%FrameworkDir%\%FrameworkVersion%;%PATH%; SET INCLUDE=%MSVCDir%\ATLMFC\INCLUDE;%MSVCDir%\INCLUDE;%MSVCDir%\PlatformSDK\include\gl;%MSVCDir%\PlatformSDK\include;%FrameworkSDKDir%\include;%INCLUDE% SET LIB=%MSVCDir%\ATLMFC\LIB;%MSVCDir%\LIB;%MSVCDir%\PlatformSDK\lib;%FrameworkSDKDir%\lib;%LIB% GOTO end :Usage ECHO. VSINSTALLDIR variable is not set. ECHO. ECHO SYNTAX: %0 GOTO end :end Here the console output, what I not understand here and find very suspicious is that after the “IF %ERRORLEVEL%” Statement in the first script all will be put out regardless the echo is set to off… Executing: "C:\Programme\IBM\Rhapsody752\Share\etc\vs2005_make.bat" Simulation.mak build IF %ERRORLEVEL%==0 ( Mehr? set arch=x86 Mehr? ) ELSE ( Mehr? set arch=x64 Mehr? ) call "%ProgramFiles%\IBM\Rhapsody752\Share\etc\Vcvars_VisualStudio2005.bat" %arch% :: param 1 - Processor architecture @echo off ECHO param 1 = %1 param 1 = x86 IF %1==x86 ( Mehr? SET ProgrammPath=%ProgramFiles% Mehr? ) ELSE IF %1==x64 ( Mehr? SET ProgrammPath=%ProgramFiles(x86)% Mehr? ) ELSE ( Mehr? ECHO Unknowen architectur Mehr? EXIT /B 1 Mehr? ) SET VSINSTALLDIR="%ProgrammPath%\Microsoft Visual Studio 8\Common7\IDE" SET VCINSTALLDIR="%ProgrammPath%\Microsoft Visual Studio 8" SET FrameworkDir=C:\WINDOWS\Microsoft.NET\Framework SET FrameworkVersion=v2.0.50727 SET FrameworkSDKDir="%ProgrammPath%\Microsoft Visual Studio 8\SDK\v2.0" rem Root of Visual Studio common files. IF %VSINSTALLDIR%=="" GOTO Usage IF %VCINSTALLDIR%=="" SET VCINSTALLDIR=%VSINSTALLDIR% rem rem Root of Visual Studio ide installed files. rem SET DevEnvDir=%VSINSTALLDIR% rem rem Root of Visual C++ installed files. rem SET MSVCDir=%VCINSTALLDIR%\VC SET PATH=%DevEnvDir%;%MSVCDir%\BIN;%VCINSTALLDIR%\Common7\Tools;%VCINSTALLDIR%\Common7\Tools\bin\prerelease;%VCINSTALLDIR%\Common7\Tools\bin;%FrameworkSDKDir%\bin;%FrameworkDir%\%FrameworkVersion%;%PATH%; SET INCLUDE=%MSVCDir%\ATLMFC\INCLUDE;%MSVCDir%\INCLUDE;%MSVCDir%\PlatformSDK\include\gl;%MSVCDir%\PlatformSDK\include;%FrameworkSDKDir%\include;%INCLUDE% SET LIB=%MSVCDir%\ATLMFC\LIB;%MSVCDir%\LIB;%MSVCDir%\PlatformSDK\lib;%FrameworkSDKDir%\lib;%LIB% GOTO end Build Done I hope someone have an idea, i work now since two days and don't find the error... thanking you in anticipation. Note: The word “Mehr?” in the text output is german and means “more”. I don't know were it comes from and it is possible that it is a bad translation from the English output to german.

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  • What's slowing for loops/assignment vs. C?

    - by Lee
    I have a collection of PHP scripts that are extremely CPU intensive, juggling millions of calculations across hundreds of simultaneous users. I'm trying to find a way to speed up the internals of PHP variable assignment, and looping sequences vs C. Although PHP is obviously loosely typed, is there any way/extension to specifically assign type (assign, not cast, which seems even more expensive) in a C-style fashion? Here's what I mean. This is some dummy code in C: #include <stdio.h> int main() { unsigned long add=0; for(unsigned long x=0;x<100000000;x++) { add = x*59328409238; } printf("x is %ld\n",add); } Pretty self-explanatory -- it loops 100 million times, multiples each iteration by an arbitrary number of some 59 billion, assigns it to a variable and prints it out. On my Macbook, compiling it and running it produced: lees-macbook-pro:Desktop lee$ time ./test2 x is 5932840864471590762 real 0m0.266s user 0m0.253s sys 0m0.002s Pretty darn fast! A similar script in PHP 5.3 CLI... <?php for($i=0;$i<100000000;$i++){ $a=$i*59328409238; } echo $a."\n"; ?> ... produced: lees-macbook-pro:Desktop lee$ time /Applications/XAMPP/xamppfiles/bin/php test3.php 5.93284086447E+18 real 0m22.837s user 0m22.110s sys 0m0.078s Over 22 seconds vs 0.2! I realize PHP is doing a heck of a lot more behind the scenes than this simple C program - but is there any way to make the PHP internals to behave more 'natively' on primitive types and loops?

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  • endless loop / StackOverflowError when using Apache MyFaces 2.0

    - by MRalwasser
    Hello, I just like to give JSF 2.0 (MyFaces 2.0) a try using Tomcat 6.0. I am completely new to JSF. I just put a completely static xhtml as test.jsf in the application root. When request the URL, a stackoverflowerror will always be thrown: java.lang.StackOverflowError at org.apache.catalina.core.ApplicationHttpRequest$AttributeNamesEnumerator.(ApplicationHttpRequest.java:904) at org.apache.catalina.core.ApplicationHttpRequest.getAttributeNames(ApplicationHttpRequest.java:243) at org.apache.catalina.core.ApplicationHttpRequest$AttributeNamesEnumerator.(ApplicationHttpRequest.java:905) at org.apache.catalina.core.ApplicationHttpRequest.getAttributeNames(ApplicationHttpRequest.java:243) at org.apache.catalina.core.ApplicationHttpRequest$AttributeNamesEnumerator.(ApplicationHttpRequest.java:905) (repeated many times, but then:) at org.apache.catalina.core.ApplicationHttpRequest$AttributeNamesEnumerator.(ApplicationHttpRequest.java:905) at org.apache.catalina.core.ApplicationHttpRequest.getAttributeNames(ApplicationHttpRequest.java:243) at org.apache.myfaces.context.servlet.RequestMap.getAttributeNames(RequestMap.java:66) at org.apache.myfaces.util.AbstractAttributeMap.isEmpty(AbstractAttributeMap.java:100) at org.apache.myfaces.renderkit.ErrorPageWriter._writeVariables(ErrorPageWriter.java:558) at org.apache.myfaces.renderkit.ErrorPageWriter._writeVariables(ErrorPageWriter.java:538) at org.apache.myfaces.renderkit.ErrorPageWriter.debugHtml(ErrorPageWriter.java:259) at org.apache.myfaces.renderkit.ErrorPageWriter.debugHtml(ErrorPageWriter.java:221) at org.apache.myfaces.renderkit.ErrorPageWriter.handleThrowable(ErrorPageWriter.java:384) at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:102) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:189) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302) at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:439) at org.apache.myfaces.view.jsp.JspViewDeclarationLanguage.buildView(JspViewDeclarationLanguage.java:115) at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:103) at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:207) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:191) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302) at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:439) at org.apache.myfaces.view.jsp.JspViewDeclarationLanguage.buildView(JspViewDeclarationLanguage.java:115) at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:103) at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:207) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:191) (also repeated many times...) What did I made wrong? Thank you and best regards, M. Ralwasser

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  • Generic foreach loop in C#.

    - by mcoolbeth
    The compiler, given the following code, tells me "Use of unassigned local variable 'x'." Any thoughts? public delegate Y Function<X,Y>(X x); public class Map<X,Y> { private Function<X,Y> F; public Map(Function f) { F = f; } public Collection<Y> Over(Collection<X> xs){ List<Y> ys = new List<Y>(); foreach (X x in xs) { X x2 = x;//ys.Add(F(x)); } return ys; } }

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  • Sliding in Winforms form

    - by rs
    Hi, I'm making a form at the bottom of the screen and I want it to slide upwards so I wrote the following code: int destinationX = (Screen.PrimaryScreen.WorkingArea.Width / 2) - (this.Width / 2); int destinationY = Screen.PrimaryScreen.WorkingArea.Height - this.Height; this.Location = new Point(destinationX, destinationY + this.Height); while (this.Location != new Point(destinationX, destinationY)) { this.Location = new Point(destinationX, this.Location.Y - 1); System.Threading.Thread.Sleep(100); } but the code just runs through and shows the end position without showing the form sliding in which is what I want. I've tried Refresh, DoEvents - any thoughts?

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  • Are endless loops in bad form?

    - by rlbond
    So I have some C++ code for back-tracking nodes in a BFS algorithm. It looks a little like this: typedef std::map<int> MapType; bool IsValuePresent(const MapType& myMap, int beginVal, int searchVal) { int current_val = beginVal; while (true) { if (current_val == searchVal) return true; MapType::iterator it = myMap.find(current_val); assert(current_val != myMap.end()); if (current_val == it->second) // end of the line return false; current_val = it->second; } } However, the while (true) seems... suspicious to me. I know this code works, and logically I know it should work. However, I can't shake the feeling that there should be some condition in the while, but really the only possible one is to use a bool variable just to say if it's done. Should I stop worrying? Or is this really bad form. EDIT: Thanks to all for noticing that there is a way to get around this. However, I would still like to know if there are other valid cases.

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  • how to escape white space in bash loop list

    - by MCS
    I have a bash shell script that loops through all child directories (but not files) of a certain directory. The problem is that some of the directory names contain spaces. Here are the contents of my test directory: $ls -F test Baltimore/ Cherry Hill/ Edison/ New York City/ Philadelphia/ cities.txt And the code that loops through the directories: for f in `find test/* -type d`; do echo $f done Here's the output: test/Baltimore test/Cherry Hill test/Edison test/New York City test/Philadelphia Cherry Hill and New York City are treated as 2 or 3 separate entries. I tried quoting the filenames, like so: for f in `find test/* -type d | sed -e 's/^/\"/' | sed -e 's/$/\"/'`; do echo $f done but to no avail. There's got to be a simple way to do this. Any ideas? The answers below are great. But to make this more complicated - I don't always want to use the directories listed in my test directory. Sometimes I want to pass in the directory names as command-line parameters instead. I took Charles' suggestion of setting the IFS and came up with the following: dirlist="${@}" ( [[ -z "$dirlist" ]] && dirlist=`find test -mindepth 1 -type d` && IFS=$'\n' for d in $dirlist; do echo $d done ) and this works just fine unless there are spaces in the command line arguments (even if those arguments are quoted). For example, calling the script like this: test.sh "Cherry Hill" "New York City" produces the following output: Cherry Hill New York City Again, I know there must be a way to do this - I just don't know what it is...

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  • Input event loop in a console application

    - by Álvaro
    Hi, I'm trying to make a little console application that is able to deal with keystrokes as events. What I need is mostly the ability to get the keystrokes and be able to do something with them without dealing with the typical stdin reading functions. I tried to check the code of programs like mplayer, which implement this (for stopping the play, for example), but I can't get to the core of this with such a big code base. Thanks

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