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• Debugging on 64bit Machine While having 32bit Visual Studio

  - by Mubashar Ahmad

  Dear Gurus I would like to know that If my console Application is running in debug mode attached in Visual Studio 2008 of 32bit while my machine is 64bit with Win Srv 2008 64bit and .Net framework 64 is installed as well Is my application is working in 64bit or not if not how can i make it run in 64bit?

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• Facing Memory Leaks in AES Encryption Method.

  - by Mubashar Ahmad

  Can anyone please identify is there any possible memory leaks in following code. I have tried with .Net Memory Profiler and it says "CreateEncryptor" and some other functions are leaving unmanaged memory leaks as I have confirmed this using Performance Monitors. but there are already dispose, clear, close calls are placed wherever possible please advise me accordingly. its a been urgent. public static string Encrypt(string plainText, string key) { //Set up the encryption objects byte[] encryptedBytes = null; using (AesCryptoServiceProvider acsp = GetProvider(Encoding.UTF8.GetBytes(key))) { byte[] sourceBytes = Encoding.UTF8.GetBytes(plainText); using (ICryptoTransform ictE = acsp.CreateEncryptor()) { //Set up stream to contain the encryption using (MemoryStream msS = new MemoryStream()) { //Perform the encrpytion, storing output into the stream using (CryptoStream csS = new CryptoStream(msS, ictE, CryptoStreamMode.Write)) { csS.Write(sourceBytes, 0, sourceBytes.Length); csS.FlushFinalBlock(); //sourceBytes are now encrypted as an array of secure bytes encryptedBytes = msS.ToArray(); //.ToArray() is important, don't mess with the buffer csS.Close(); } msS.Close(); } } acsp.Clear(); } //return the encrypted bytes as a BASE64 encoded string return Convert.ToBase64String(encryptedBytes); } private static AesCryptoServiceProvider GetProvider(byte[] key) { AesCryptoServiceProvider result = new AesCryptoServiceProvider(); result.BlockSize = 128; result.KeySize = 256; result.Mode = CipherMode.CBC; result.Padding = PaddingMode.PKCS7; result.GenerateIV(); result.IV = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; byte[] RealKey = GetKey(key, result); result.Key = RealKey; // result.IV = RealKey; return result; } private static byte[] GetKey(byte[] suggestedKey, SymmetricAlgorithm p) { byte[] kRaw = suggestedKey; List<byte> kList = new List<byte>(); for (int i = 0; i < p.LegalKeySizes[0].MaxSize; i += 8) { kList.Add(kRaw[(i / 8) % kRaw.Length]); } byte[] k = kList.ToArray(); return k; }

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• WCF - Network Cost

  - by Mubashar Ahmad

  Dear Devs I have a wcf service deployed on IIS with basicHttpBinding and aspNetCompatibilityEnabled=true I have a test client as well which invokes multiple service functions simultaneously. To check the performance of service call on client and server I calculated the Avg time it takes to complete a service request on client(in proxy code) and on server as well. after a test of 8 hrs (server and client were on the same machine) i came to know that average response time on client is around 34ms where as the Avg execution time on server is around 3ms so the difference is 31ms. I would like to know why every call is taking 31ms is it justified? and how can i reduce this?

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• How to Setup Eclipse to Start Writing Web Services using Axis2

  - by Mubashar Ahmad

  Dear Gurus I am a .net Developer but now a days i want to setup Eclipse to write a sample web services to test the capacity of Java/Axis over WCF/BasicHttpBindings. I found a couple of articles regarding the setup procedures but they are too old or their wording is may be for java or eclipse experts. Can anyone please give me detailed instruction on how can I get to work quickly. I tried my best but i can't even setup TomCat properly its not starting and throwing exception when i try to start it from eclipse servers windows. Please some one give me a latest and novice level article. Regards

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• Performance Counters in Server Development

  - by Mubashar Ahmad

  Dear Gurus All you be agree with the value and worth of Performance Counters while developing and maintaining a server kind application I would like to know what is the best way to implement those, Specifically using C#? Usually performance counters have the following attributes They are shared global Writing requires locks to ensure Synchronization Reading Some times requires locks too. Is it better to update them Asynchronously and what is the best way to make them so. (I am planning to use the ThreadPool.QueuWorketItem function, pls tell me you opinion on this too.) If my question seems a bit vague can you just take the example of a HelloWorld Wcf service and i wanted to know following how many times its being hit overall and within a certain period Average/min/max Response Times overall and within a certain period. Moreover if any one knows about the Specialized way provided by DotNet or WCF then please let me know as well.

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• WCF Service Memory Leaks

  - by Mubashar Ahmad

  Dear Devs I have a very small wcf service hosted in a console app. [ServiceContract] public interface IService1 { [OperationContract] void DoService(); } [ServiceBehavior(InstanceContextMode=InstanceContextMode.PerCall)] public class Service1 : IService1 { public void DoService() { } } and its being called as using (ServiceReference1.Service1Client client = new ServiceReference1.Service1Client()) { client.DoService(new DoServiceRequest()); client.Close(); } Please remember that service is published on basicHttpBindings. Problem Now when i performed above client code in a loop of 1000 i found big difference between "All Heap bytes" and "Private Bytes" performance counters (i used .net memory profiler). After investigation i found some of the objects are not properly disposed following are the list of those objects (1000 undisposed instance were found -- equals to the client calls) (namespace for all of them is System.ServiceModel.Channels) HttpOutput.ListenerResponseHttpOutput.ListenerResponseOutputStream BodyWriterMessage BufferedMessage HttpRequestContext.ListenerHttpContext.ListenerContextHttpInput.ListenerContextInputStream HttpRequestContext.ListenerHttpContext Questions Why do we have lot of undisposed objects and how to control them. Please Help

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• How to Perform Continues Iteration over Shared Dictionary in Multi-threaded Environment

  - by Mubashar Ahmad

  Dear Gurus. Note Pls do not tell me regarding alternative to custom session, Pls answer only relative to the Pattern Scenario I have Done Custom Session Management in my application(WCF Service) for this I have a Dictionary shared to all thread. When a specific function Gets called I add a New Session and Issue SessionId to the client so it can use that sessionId for rest of his calls until it calls another specific function, which terminates this session and removes the session from the Dictionary. Due to any reason Client may not call session terminator function so i have to implement time expiration logic so that i can remove all such sessions from the memory. For this I added a Timer Object which calls ClearExpiredSessions function after the specific period of time. which iterates on the dictionary. Problem: As this dictionary gets modified every time new client comes and leaves so i can't lock the whole dictionary while iterating over it. And if i do not lock the dictionary while iteration, if dictionary gets modified from other thread while iterating, Enumerator will throw exception on MoveNext(). So can anybody tell me what kind of Design i should follow in this case. Is there any standard pattern available.

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• Trace Routing for a Certain port

  - by Mubashar Ahmad

  Dear Network Gurus Before saying anything let me tell you that i am not well educated int networks related subjects. I am a software developer and I have written and exposed a Service on HTTPS at port 8000. Now i want to know that if there is any kind of software that can help me to trace if there is any kind of port blocking from one site to my service location with information of blocker host. I have tried couple of Tracerout software like wintrace but all these uses ICMP protocols and there is no option to provide port number in them. And moreover i like to ad an exception in Firewall for incoming ICMP protocal in windows server 2003 windows firewall but i can't see anyoption to ad protocol in exception instead there are only options to ad a program or ad a port of udp or tcp. Please help Regards

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• Error in install sql server 2008 rn

  - by Ahmad Karimi

  When running the SQL Server 2008 setup, I receive the following error message: TITLE: Microsoft SQL Server 2008 R2 Setup The following error has occurred: Unable to open Windows Installer file 'H:\Enterprise\x86\setup\sql_engine_core_inst_msi\sql_engine_core_inst.msi'. Windows Installer error message: The system cannot open the device or file specified. . Click 'Retry' to retry the failed action, or click 'Cancel' to cancel this action and continue setup. For help, click: http://go.microsoft.com/fwlink?LinkID=20476&ProdName=Microsoft+SQL+Server&EvtSrc=setup.rll&EvtID=50000&ProdVer=10.50.1600.1&EvtType=0xC24842DB BUTTONS: &Retry Cancel I install the installer 4.5 and restart windows but don't resolve problem.

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• IIS is not working

  - by ahmad

  i am using win XP, i was using wamp server which was working well, soon i needed to install IIS components and now the problem is this, that neither my IIS is working not wamp server it asking for authentication localhost:80, i uninstall my wamp server but it does not works

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• How do I make a VMDK format virtual hard drive from a physical partition on a disk?

  - by Ahmad

  I have a 320 GB HDD, which actually only has an 80 GB NTFS format partition which was being used by a Windows 7 system ... I want to create a VMDK format clone of this partition, so that I can use it with VMware .. However, tradition VMDK creation programs normally make a VMDK for an entire disk, whereas I just want to make a VMDK for the one 80 GB partition ... This is important because the other 240 GB on the physical source HDD is just unallocated area, and including that in a VMDK file is just a plain waste of space .. So how to make a VMDK file for a specific partition ? Any tool available for this ?

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• Windows Media Sharing not 'always' being detected by PS3

  - by Ahmad

  I'm having a weird problem with Windows Media Sharing on Windows 7 .. I have the following hardware in my network: PC 1 --- My main PC --- runs Windows 7 Ultimate x64 PC 2 --- My backup PC --- runs Windows 7 Ultimate x32 PS3 PC 1 is my main PC which has all my data/media on it .. PC 2 is a backup PC I have, but I use it like once in 2 months .. It has nothing installed on it apart from some very very basic software ... Problem is, my PS3 always sees the media sharing service coming from PC 2, but it never sees the media sharing service coming from PC 1 initially .. Both PC 1 and PC 2 have the same media sharing configuration (All everything on all devices on all networks) ... But when I restart both PCs, the PS3 will only detect PC 2's media sharing service, not PC1 .... However here's the twist .. When PC 1 is restarted, and if I view my 'Network' on PC 2, I do see PC 1's Media Sharing Service, and I'm able to play from it too on PC 2 .. To get my PS3 to also see PC 1's media sharing service, I have to do either of the following 2 things: 1) Play something from PC 1's media sharing service on PC 2 ... The PS3 will then magically also detect PC 1's media sharing service .. 2) Go into the Services area on PC 1 and restart the 'Windows Media Player Network Sharing Service' ... After this, the PS3 also instantly starts to see PC 1's media sharing service .. Since my PS3 is like a month old and is properly detecting PC 1's media sharing service, I think the problem is somewhere in the configuration of PC 1's media sharing service ... Also, on PC 1 I have Norton Internet Security 2012 installed, but I've disabled it completely, and have also disabled Windows Firewall (from PC 1 only) .. Can someone shed some light onto this ?

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• Googlebot cant access my site webmaster tools reply Unreachable robots.txt

  - by Ahmad Ahmadi

  When I try to fetch my site as a googlebot in webmaster tools it return Unreachable robots.txt, after investigate I understood google bot can see my server: tcpdump | grep google it return that google can access my server with IP 66.249.81.172 or 66.249.75.111. but there is not any think in access log or error log or other apache logs. cat access_log | grep google or cat error_log | grep 66.249.81.172 Other bot (bing,...) can access apache but google cant. there is not any problem in my robots.txt or its permissions because as you know robots.txt is not necessary so I delete it but again webmaster tools returned Unreachable robots.txt not 404 not found! information about server: Server OS : CentOS 6 Web Server : Apache 2.x Firewall : IPTables is stoped SELinux is Disabled There is not any think else for security on my server. how can I investigate the problem and is there any other command that can help me to find the problem.

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• Finding latest successful logins and failed attempts to a CentOS server

  - by ahmad

  I'm looking for a log file or any service to report the latest login attempts which have failed due to username/password miss match. Is there such utility available for CentOS? (built-in is preferred) My second question, and more generally, I need a log file of penetration attempts to my server. Ideally, this log should contain all attempts including logins, httpd activities, and other conventional open ports.

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• Detecting Request that uses invalid Encoding using Modsecurity

  - by Ali Ahmad

  I am trying write a virtual patch using modsecurity for my hosted web application using following rule i.e. <Location /index.php> SecDefaultAction phase:2,t:none,log,deny # Validate parameter names SecRule ARGS_NAMES "!^(articleid)$" \ "msg:'Unknown parameter: %{MATCHED_VAR_NAME}'" # Expecting articleid only once SecRule &ARGS:articleid "!@eq 1" \ "msg:'Parameter articleid seen more than once'" # Validate parameter articleid SecRule ARGS:articleid "!^[0-9]{1,10}$" \ "msg:'Invalid parameter articleid'" </Location> The problem is how can i reject requests that use invalid encoding as a global WAF configuration so that this patch cannot be circumvented.

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• memcache fast-cgi php apache 2.2 windows 7 creating problems

  - by Ahmad

  hi, i am trying to run memcache, fast-cgi with apache 2.2 + php on a windows 7 machine. if i dont use memcache everything works fine. the moment i disable extension=php_memcache.dll in php.ini everything returns to normal. once i start apache, the apache logs say: [Wed Jan 12 18:19:23 2011] [notice] Apache/2.2.17 (Win32) mod_fcgid/2.3.6 configured -- resuming normal operations [Wed Jan 12 18:19:23 2011] [notice] Server built: Oct 18 2010 01:58:12 [Wed Jan 12 18:19:23 2011] [notice] Parent: Created child process 412 [Wed Jan 12 18:19:23 2011] [notice] Child 412: Child process is running [Wed Jan 12 18:19:23 2011] [notice] Child 412: Acquired the start mutex. [Wed Jan 12 18:19:23 2011] [notice] Child 412: Starting 64 worker threads. [Wed Jan 12 18:19:23 2011] [notice] Child 412: Starting thread to listen on port 80. and after accessing the page [the page just has echo phpinfo()]. i get this error in the error.log [Wed Jan 12 18:20:54 2011] [warn] [client 127.0.0.1] (OS 109)The pipe has been ended. : mod_fcgid: get overlap result error [Wed Jan 12 18:20:54 2011] [error] [client 127.0.0.1] Premature end of script headers: index.php i have php_memcache.dll in my ext directory and httpd.conf is like this: LoadModule fcgid_module modules/mod_fcgid.so FcgidInitialEnv PHPRC "c:/php" FcgidInitialEnv PATH "c:/php;C:/WINDOWS/system32;C:/WINDOWS;C:/WINDOWS/System32/Wbem;" FcgidInitialEnv SystemRoot "C:/Windows" FcgidInitialEnv SystemDrive "C:" FcgidInitialEnv TEMP "C:/WINDOWS/Temp" FcgidInitialEnv TMP "C:/WINDOWS/Temp" FcgidInitialEnv windir "C:/WINDOWS" FcgidIOTimeout 64 FcgidConnectTimeout 32 FcgidMaxRequestsPerProcess 500 <Files ~ "\.php$>" AddHandler fcgid-script .php FcgidWrapper "c:/php/php-cgi.exe" .php </Files> so the problem has to be related to memcache coz if i disable it, fast-cgi seems to be working fine. any possible reasons for this?? the memcache service is running.. i can check it through control panel-services

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• Web Interfaces not opening even after Port Forwarding is said to be working!

  - by Ahmad

  I'm encountering this strange problem which has baffled me to the ground, and which I haven't encountered even after years of doing port forwarding .. ! I am hoping somebody here can help me solve this mystery .. :) My network configuration is as follows: I have a DSL modem (custom made and branded by my ISP) which is receiving a DSL stream ... it has an external IP which is visible to the world, say, 11.22.33.44 ... This modem has DHCP enabled, has an internal IP for itself, which is 192.168.1.1 .. it is connected to 2 laptops via and ethernet cable .. Laptop 1 has IP 192.168.1.2, and Laptop 2 has IP 192.168.1.3 ... On Laptop 1, two applications are running, jDownloader and Media Player Classic, which have their web interfaces on ports 8765 and 13579, respectively ... I can access both of these web interfaces from Laptop 2 by opening these addresses: 192.1681.2:8765 and 192.168.1.2:13579 ... both of their web interfaces open up, meaning the web interfaces are working fine .. Moving on, I now want to access these web interfaces from outside my network as well, and so I've configured port forwarding in my PTCL modem to forward all traffic on ports between 8000 and 14000 (both TCP and UDP) to IP 192.168.1.2 ... I have verified that port forwarding is working by testing it using PortForward.com's port checker tool, and this website too: [URL]http://www.yougetsignal.com/tools/open-ports/[/URL] When I use the website, if I'm running the applications on Laptop 2, the website reports that the port is open .. if I then close the application, the website reports the port is closed ... This makes sense as nothing is listening on my machine in the latter case .. Also, if I disable port forwarding in my modem, again, the website reports the port is closed ... so, the website's results seem to be okay ... Same of the above can be said when I'm used PortForward.com's port checker tool ... So again, everything okay so far ... Now, here comes the problem !! ... Despite the above tools reporting that port forwarding is working, I am unable to open the web interfaces from outside my network ... So for example, if I tried to browse 11.22.33.44:8765 or 11.22.33.44:13579, nothing opens in my browser ... But if I accessed these web server's locally from Laptop 3, by typing in 192.168.1.2:8765 or 192.168.1.2:13579, they opened ... So where is the problem here ?? The tools report unanimously that port forwarding is working, and yet I am unable to open the web interfaces from outside the network .. Also note that I have disabled the firewall from my computer, and have also made sure that any option in the above programs (whose web interfaces I am trying to open) that says only local connections are to be accepted, is disabled ... So whats the problem ... ?!! Any ideas ??

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• calculate AUC (GAM) in R [migrated]

  - by ahmad

  I used the following script to calculate AUC in R: library(mgcv) library(ROCR) library(AUC) data1=read.table("d:\\2005.txt", header=T) GAM<-gam(tuna ~ s(chla)+s(sst)+s(ssha),family=binomial, data=data1) gampred<- predict(GAM, type="response") rp <- prediction(gampred, data1$tuna) auc <- performance( rp, "auc")@y.values[[1]] auc roc <- performance( rp, "tpr", "fpr") plot( roc ) But when I was running the script, the result is: **rp <- prediction(gampred, data1$tuna) Error in prediction(gampred, data1$tuna) : Format of predictions is invalid. > > auc <- performance( rp, "auc")@y.values[[1]] Error in performance(rp, "auc") : object 'rp' not found > auc function (x, min = 0, max = 1) { if (any(class(x) == "roc")) { if (min != 0 || max != 1) { x$fpr <- x$fpr[x$cutoffs >= min & x$cutoffs <= max] x$tpr <- x$tpr[x$cutoffs >= min & x$cutoffs <= max] } ans <- 0 for (i in 2:length(x$fpr)) { ans <- ans + 0.5 * abs(x$fpr[i] - x$fpr[i - 1]) * (x$tpr[i] + x$tpr[i - 1]) } } else if (any(class(x) %in% c("accuracy", "sensitivity", "specificity"))) { if (min != 0 || max != 1) { x$cutoffs <- x$cutoffs[x$cutoffs >= min & x$cutoffs <= max] x$measure <- x$measure[x$cutoffs >= min & x$cutoffs <= max] } ans <- 0 for (i in 2:(length(x$cutoffs))) { ans <- ans + 0.5 * abs(x$cutoffs[i - 1] - x$cutoffs[i]) * (x$measure[i] + x$measure[i - 1]) } } return(as.numeric(ans)) } <bytecode: 0x03012f10> <environment: namespace:AUC> > > roc <- performance( rp, "tpr", "fpr") Error in performance(rp, "tpr", "fpr") : object 'rp' not found > plot( roc ) Error in levels(labels) : argument "labels" is missing, with no default** Can anybody help me to solve this problem? Thank you in advance.

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• Timely automatic unexpected reboot on ubuntu desktop

  - by ahmad

  We have a remote linux server (ubuntu desktop). The system log indicates the system has been restarted on the timely fashion. Here is a part of the last output: ut pts/0 192.169.50.2-sta Sat Nov 24 22:17 still logged in reboot system boot 2.6.32-21-generi Sat Nov 24 22:04 - 22:17 (00:13) ut pts/0 server.local Sat Nov 24 21:36 - crash (00:27) reboot system boot 2.6.32-21-generi Sat Nov 24 15:55 - 22:17 (06:21) reboot system boot 2.6.32-21-generi Fri Nov 23 18:02 - 22:17 (1+04:14) reboot system boot 2.6.32-21-generi Fri Nov 23 10:39 - 22:17 (1+11:38) reboot system boot 2.6.32-21-generi Fri Nov 23 04:18 - 22:17 (1+17:59) reboot system boot 2.6.32-21-generi Fri Nov 23 03:57 - 22:17 (1+18:20) reboot system boot 2.6.32-21-generi Thu Nov 22 20:38 - 22:17 (2+01:38) reboot system boot 2.6.32-21-generi Thu Nov 22 11:13 - 22:17 (2+11:03) reboot system boot 2.6.32-21-generi Thu Nov 22 08:12 - 22:17 (2+14:05) reboot system boot 2.6.32-21-generi Wed Nov 21 11:16 - 22:17 (3+11:00) reboot system boot 2.6.32-21-generi Tue Nov 20 22:36 - 22:17 (3+23:41) reboot system boot 2.6.32-21-generi Tue Nov 20 14:12 - 22:17 (4+08:05) reboot system boot 2.6.32-21-generi Tue Nov 20 11:32 - 22:17 (4+10:44) reboot system boot 2.6.32-21-generi Tue Nov 20 01:52 - 22:17 (4+20:25) reboot system boot 2.6.32-21-generi Tue Nov 20 00:22 - 22:17 (4+21:55) reboot system boot 2.6.32-21-generi Mon Nov 19 17:27 - 22:17 (5+04:50) It looks the system is set to be restarted at 22:17. Can anyone guide me why this happens? Thanks in advance.

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• How to clone a HDD and then use the clone with VMware (so that Windows works!)?

  - by Ahmad

  I have a system on which Windows 7 is installed, and I am trying to make a clone of its HDD image, which I then want to use in my main PC with VMware, so that I can boot Windows 7 off the cloned HDD. I used Ultimate Boot CD v5.1.1 with the system whose HDD I wanted to clone, and I cloned it using EaseUs Disk Copy, which comes with Ultimate Boot CD. The source HDD was 250 GB in size which had 3 partitions, while the USB HDD I attached to the system, which was supposed to be the destination/clone HDD, was 320 GB in size. I chose to create an exact replica, and so 250 GB worth of data (partitions, etc.) was copied exactly, and the rest of the space was un-allocated. I now connected this USB HDD to my main PC, fired up VMware Workstation 8 and defined a new Virtual Machine, and chose to boot off the USB HDD. Result is that when Windows is booting (from the cloned HDD inside VMware), I get the blue screen error before I reach the login screen. How can I change my methodology so that Windows even boots from the clone? I can change any tools I use, etc.

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• Partition/install issues

  - by jalal ahmad

  I am new to Ubuntu and tried to install 10.1 as dual boot option from a USB. At first I encountered the error when in partition dialogue of installation process that cannot find root directory. I did a search on Ubuntu forums and did this as in one of the posts. Make sure that the partition file system you wish to install Linux, Ubuntu or Backtrack on it is ext4, ext3 or ext2, and not FAT32 or NTFS. Then mount / on it: During the installation process press "change" on the partition you wish to use Make sure "do not use this partition" scroll is not chosen, scroll to ext4, ext3 or ext2 On the "mount" field write / Click ok, then next a message will appear saying something like "swap area was not defined, do you wish to continue or choose a swap area?", click "ok" and continue or click "go back" and choose another partition and click change, on the file system scroll choose "swap" and click "ok" and next All good but when I rebooted I could not find Windows vista as in dual boot option. Plus I could not see wireless networks and in the process of trying to find out what went wrong the soft switch somehow turned off and as I cannot boot in Windows I have no idea what to do. Again searching internet I found a post which said the dual boot problem can be overcome by installing gparted but when I tried I got the message Reading package lists... Done Building dependency tree Reading state information.. Done E: Couldn't find package gparted I thought I am going to copy my stuff from my hard disk and try to install Windows but I found out that I have two partitions which are different from what I had before installing Ubuntu. I now have filesystem partition1 119 GB ext4, swap partition 5 1.1 GB swap and extended partition 2 1.1 GB. And I cannot mount 119 GB where all my personal videos, photos are if still there. Now I cannot boot from Windows even. Need help on what to do? Best case scenario would be to be able to copy my stuff before I mess up the system further. Else a dual boot system and if not then how do I install vista again. I have Windows CD. Cheers guys and thanks in advance.

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• Macros in Excel 2010 hangs

  - by Ahmad

  I have a spreadsheet with several macros. Generally, when previously using Excel 2007, a user clicks a button and everything works as expected (calculations, some email sending & file I/O). Typically, the expected run-time is about 90 seconds. The spreadsheet is a xlsm file created with Excel 2007. With Excel 2010 however, the same user process results in a non-responsive excel and forces us to kill excel from the task manager. Some note that I have gathered so far in trying to debug this issue: When monitoring CPU usage, it seems that Excel does start the macro. CPU usage increases as expected to about 47% for a few seconds. Excel.exe than drops to 0% usage and I now have a non-responsive Excel (even after 1 hour). If I set debug break points across modules and different functions and step through the code (after clicking the button) , the process works as expected albeit much slower. To add, there were no exceptions. I am at a complete loss as to what the issue may be. I initially thought it may be the add in that is being used but that was debunked by point 2. This seems to be a very odd situation. I can provide more information if required, but I'm at wits end about the root cause could be. I need help in diagnosing and resolving this issue.

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• TORQUE: Find out why the job is queued?

  - by ahmad

  Under TORQUE-MAUI job scheduling system, there are several reasons to have a job stayed in Q state. Those that I know are: There are not enough resource to run the Queued job. The user is not allowed to have further running jobs. The user is not allowed to have further computation cores. Is there any other reason to have the queued job? Further information: I am asking the question because I have couple of queued jobs while some nodes are free, pbs_mom is on on them, and mauid limitations are generously large. Thanks in advance.

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• Tool for creating system image from DOS (should be USB bootable) ..?

  - by Ahmad

  I want to know if there's any decent tool which can be used to create the system image from DOS .. What I specifically want to do is to put the program in my FAT32 formatted USB, then boot the target computer from the USB so that the tool runs, and then it should be able to create a complete system image of the entire system, and store it on the USB itself .. Please note that I can ONLY do this from boot time because of other limitations .. I cannot go into any OS to do it from there .. So I need tools which can do this at boot time from DOS ..

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• What are common anti-patterns when using VBA

  - by Ahmad

  I have being coding a lot in VBA lately (maintenance and new code), specifically with regards to Excel automation etc. = macros. Typically most of this has revolved around copy/paste, send some emails, import some files etc. but eventually just ends up as a Big ball of mud As a person who values clean code, I find it very difficult to produce 'decent' code when using VBA. I think that in most cases, this is a direct result of the macro-recorder. Very helpful to get you started, but most times, there are one too many lines of code that achieve the end result. Edit: The code from the macro-recorder is used as a base to get started, but is not used in its entirety in the end result I have already created a common addin that has my commonly used subroutines and some utility classes in an early attempt to enforce some DRYness - so this I think is a step in the right direction. But I feel as if it's a constant square peg, round hole situation. The wiki has an extensive list of common anti-patterns and what scared me the most was how many I have implemented in one way or another. The question Now considering, that my mindset is OO design, what some common anti-patterns and the possible solutions when designing a solution (think of this - how would designing a solution using Excel and VBA be different from say a .net/java/php/.../ etc solution) ; and when doing common tasks like copying data, emailing, data importing, file operations... etc An anti-pattern as defined by Wikipedia is: In software engineering, an anti-pattern (or antipattern) is a pattern that may be commonly used but is ineffective and/or counterproductive in practice

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