Multiple instances of reentrant VI in a modular way

Is there a way to have a VI run multiple instances (in parallel) of the same reentrant subVI in a modular way, i.e. the VI needs to call n number of instances? Other than having n copies of the reentrant subVI hardwired in the calling VI (which is obviously not modular, or practical - imagine if I wanted to call 100 instances of the subVI), I am short of ideas.
All my attempts so far have failed, e.g. a single for loop (n iterations) containing the reentrant sub VI (with an indexed array passing information into the loop required for each instance of the sub-VI), however the loop will not move to the next iteration until the 1st instance of the sub-VI has completed execution (obviously, I suppose). Th
is is not the desired effect, as I want n instances of the sub-VI running in parallel. Other investigations into VI Servers have been unsuccessful as well.
Any help would be most appreciated.
Thanks, Paul

There was a discussion of this subject a few months back on info-labview. It involved the use of templates. If you do a search of the archives at http://infolv.brianrenken.com/ and specify .vit as the search parameter, you'll find a message from Kyle Gupton. See if his solution is what you are looking for. Good luck.

Similar Messages

How to use multiple instances of the same dll ?

Hi,
I'd like to use multiple instances of a jni dll . I have created
different threads, in each thread, I have called System.loadLibrary(..),
and I would like each thread to access a different instance of this
library.
Unfortunately, the loadLibrary function is effective only once so I
can not find the way to do this.
Can anyone help me on this ?
Thanks.
Francois.

Hi, :)
and I would like each thread to access a different
instance of this library.In Win32, this is outright impossible. A DLL will only exist once in a process space.
In Unix, or at least in Solaris, I think this is also not possible, as libraries are loaded by the dynamic linker, and it keeps tabs of which modules have already been loaded into the process space.
I'm assuming your problem is that your native library has non-reentrant code.
If so, there are two approaches you can take to this:
1) If you have access to the source code for the native library, change it so that it is reentrant.
2) If you do not, change your Java code so that access to the native code is made from whithin synchronize blocks.
If your problem is of a different nature, I'll second the words of the previous poster and ask you what it is...
Cheers,
J.

Multiple instances of the same VI running in parallel

Hi,
I have a timestamping subVI that looks at a counter channel and applies timestamps. I want to create multiple instances of this subVI (8 to be exact) and have them all run in parallel (looking at 8 different channels). Someone gave me the following advice:
>>
Also, in case you want to call multiple instances of the same SubVI, and you want these multiple instances to execute in parallel, you will have to set the SubVI to execute in reentrant mode. Do this by opening the SubVI and going to "Edit >> VI Properties >> Execution" and enable "Reentrant execution".
<<
I've tried this but only my second instance (I started simple with only 2 instances) seems to monitor its channel and pass data along to the queue. I've included my code below, I have two signal simulators which simulate singles coming in on channels 2 and 3. I'm using a PCQI 6602 counter/timer card.
Any help would be greatly appreciated, thanks in advance,
Chris
Attachments:
LabView App (June 28, 2005).zip ‏158 KB

good news! Your reentrant VI is working and all three instances are running (as execution highlighting clearly shows). The problem is going to be an error that is occuring but you don't see because you are ignoring the error clusters internally in the timer. It looks like at one point it was set to quit if an error occurred. That still needs to be there.
Always hookup error clusters...
Mike...
Certified Professional Instructor
Certified LabVIEW Architect
LabVIEW Champion
"... after all, He's not a tame lion..."
Be thinking ahead and mark your dance card for NI Week 2015 now: TS 6139 - Object Oriented First Steps

Calling a vi in multiple instances

Hi All,
Is Reentrant VI the Best option for calling a subvi in multiple instances?
Can I use semaphore.?
Is there any other ways proven best.
Thanks,
Davidson

davidson.d wrote:
I have a subVI (reentrant) which is being used 20 times in the Main VI.
All the subVIs run in parallel with independent data input and output.
Each use of the subVI in my main VI is what i mentioned as "muliple Instances"
As You mentioned about the memory usage, this VI would take 20 copies of the subVI everytime.
I was not sure whether this (reentrant) aproach right .
Regarding semaphore, i'm not yet tried. I thought of possibility to implement without reentrant VI.
Can You get me..?
It really depends on what the subVI does. Does each one run for extended periods and do you really need to run all of them in parallel? (after all, you most likely don't have 20 CPUs).
If you don't make it re-entrant, only one instance can run at the same time and other instances will wait automatically until they get their turn. No semaphores needed.
If typically only a few run in parallel, you can configure it for "shared clones", striking a possibly better balance between memory use and parallelism.
It would help if you could be more specific on how your main program is layed out and what the subVI actually does. The best solution strongly depends on this information.
LabVIEW Champion . Do more with less code and in less time .

Feedback nodes in subvis with multiple instances

I have a subvi that implements a state machine. I am using a feedback node to pass the state from one iteration to the next. I would like to have multiple instances of this subvi, but the problem is that the feedback is shared between all instances so the states get messed up. I need each instance of the subvi to run independent of the other instances and that its feedback only feeds back from the previous itereation of that subvi instance. Is this possible or do I need to rename the subvis to make them different and independent?

You will need to make the subVI's reentrant in order for them to maintain there own dataspace.

Using .vit for multiple instance

Hi,
I have a main vi, uses rendevous to run multiple subvis at the same time, that needs to be opened separately per user which need to open the same vi multiple times.
I tried to use .vit, changed main vi to vit. Created new vi that calls this main.vit. However this doesn't run multiple times, only opens the first window. Then I used subVIs as vit. This even creates a bigger problem. The sub vi's that opened doesn't run.
I think I'm missing some basic concepts of using vit. I searched the forum, found some articles but I can't find what I'm doing wrong.
Should main vit calling several sub vit's work?
Any tips, comments would help.
Thank you very much.

"CoastalMaineBird" <[email protected]> wrote in message news:[email protected]..
VIT is not for multiple instances, it is a TEMPLATE. That means you open it up, but when you go to save it, it pretends that it's untitled, and you have to give it a new name.
That's useful - for example, I have a TIMING TEMPLATE. When I want to time something. I open this VIT file. I insert the code I want to time into a certain frame, and run it. I usually don't save it, but if I do, I have to give it a new name.
That way, the next time I open it, it's fresh again.
If you want to run the same VI multiple times in parallel, you must:
- Understand what RE-ENTRANT EXECUTION means.
- Set the VI to use re-entrant execution.
- Use the VI Server to open each instance dynamically.
- Use the VI Server to CLOSE each instance dynamically.
- Be very careful about getting data into and out of the VI in question.
HTH
VI Templates can also be used to run multiple instances of the same vi. If you open a .vit dynamically several times, you'll end up with several instances of the vit. Actually, this is an intended use of the vi templates. And it works great. The great benefit over reentrant vi's is that the vi templates have front panels of there own. So it's great to use vit's when you want several similar panel, without copying the code. Reentrant vi's where not intended for this. Before 8.0, reentrant vi's didn't even have panels that updated properly, so you had to use a vit.
Regards,
Wiebe.

Multiple instances of Mail.app must be possible

I've seen many questions regarding the possibility of running multiple instances of Mail.app as separate processes. There seems to be much good reason to be able to do so, i.e. separating work and private mail, and very little bad reason to do so (maybe some problems when doing upgrades or backups, but I'm not yet sure of this). It also seems that it should not be so hard to do.
So far, using some web acquired wisdom, I've done the following:
1. Duplicate mail.app:
sudo ditto Mail.app WorkMail.app
2. Rename the executable:
mv /Applications/WorkMail.app/Contents/MacOS/Mail /Applications/WorkMail.app/Contents/MacOS/WorkMail
3. Use Property List Editor to set the following values in/Applications/WorkMail.app/Contents/Info.plist (Apple-S to Save changes!):
Root/CFBundleExecutable=WorkMail
Root/CFBundleIdentifier=com.apple.workmail
Root/CFBundleName=WorkMail
Root/NSServices/0/NSPortName=WorkMail
Root/NSServices/1/NSPortName=WorkMail
Root/NSServices/2/NSPortName=WorkMail
Root/UTExportedTypeDeclarations/0/UTTypeIdentifier=com.apple.workmail.emlx
Root/UTExportedTypeDeclarations/1/UTTypeIdentifier=com.apple.workmail.emlx.part
4. Create the following directories:
mkdir ~/Library/WorkMail Downloads
mkdir ~/Library/WorkMail
4. Launch the 'new' application 'WorkMail'.
5. Create mail accounts using the application's 'wizard'.
Here is where the first problem is encountered. The new account directories and files are still created at ~/Library/Mail. Navigating to Mail->Preferences->Accounts->[account_name]->Advanced seems to offer the option to change the mail store account directory, but nothing can actually be changed here. So...
6. Quit WorkMail.
7. Move newly created account(s) directories (where [newaccountdirectory] is a directory named with the format: [mail_type]-[user]@[domain].[tld]@[pop].[domain].[tld]]) to the correct location:
sudo mv ~/Library/Mail/[newaccountdirectory] ~/Library/WorkMail/
8. Use Property List Editor to set the following values in ~/Library/Preferences/com.apple.workmail.plist (Apple-S to Save changes!):
/Root/ActiveViewers/0/AttachedMailboxListExpandedItems/[0to_#_ofaccounts]/=~/Library/WorkMail/Mailboxes/...
/Root/CurrentTransferMailboxPath=~/Library/WorkMail/Mailboxes/...
/Root/MailAccounts/[0to_#_of_accounts]/AccountPath=~/Library/WorkMail/[new_accountdirectory]
/Root/MailDownloadsPath=~/Library/WorkMail Downloads
9. Relaunch WorkMail.
Everything at this point seems to work okay, **BUT** when I launch Mail while WorkMail is launched, I find that I cannot navigate into any mail folders within Mail. I receive an error message indicating that a necessary directory is locked. It seems that the locking mechanism used by the application may be hard-coded to lock ~/Library/Mail, and both instances of the application continue to take this action when launched, making it impossible for both to work harmoniously at the same time. I will conduct more testing and experimentation, but I am not yet capable of editing the application itself. If anyone can take us this last step, I'm sure there are many who would also like to be able to take advantage of the potential functionality.
Thanks for any input!
Steven Stromer

Hopefully, there is someone with a programming background who
can take me and other who have posted similar questions through
the final mile on this...
Well, I do have a programming background, and I must say that it amazes me that someone might want to do what you did to “solve” a problem that IMO doesn’t exist.
What exactly is it that you expect to accomplish by running multiple instances of Mail, and for which neither (1) organizing your mail using multiple mail accounts, custom mailboxes, rules, and/or smart mailboxes, nor (2) setting up separate user accounts, are acceptable solutions? I just don’t get it.
I've seen many questions regarding the possibility of running multiple
instances of Mail.app as separate processes.
I haven’t. Could you please provide a link for such a question, preferably one asked by someone who knew how Mail and Mac OS X work, i.e. a link for a case where there really was such a need?
There seems to be much good reason to be able to do so
I know of no such reasons, neither good nor bad.
i.e. separating work and private mail
I don’t see how that’s a reason to want to run multiple instances of Mail. Could you please elaborate?
Maybe if you tell us what exactly is the problem that you’re trying to solve, instead of focusing on a convoluted “solution” that doesn’t work, we could propose a solution that does...
and very little bad reason to do so
Well, if the fact that it’s so convoluted and doesn’t even work aren’t bad enough reasons, I don’t know what it is...
It also seems that it should not be so hard to do.
I wonder what makes you think so. It does certainly seem hard to me, so hard that I don’t even think it can be done without breaking something, if at all...

What is the best way to load multiple instances of a button into master index page?. I have looked a

I have successfully created an animated button that opens to reveal a quotation with a nested clickable link to the source. What I would like to do is have several of these with different quotes inside them, scattered on the page. I have looked at the composition loader available via Edge Commons, and it seems that would require some sort of Edge animate Stage 'frame' to load the instances into? Is there any way to place them directly into the master page - as div elements...?
The outer of the buttons is the same, on hover they open partialy on click fully, to reveal their particular text - which I thought about loading it at runtime with json, or maybe handlebars...?
I would also like to make the buttons only take the necessary space. ie. before they expand they are only buttons. ( I have set the stage to hidden but it still takes up space). To acheive this, I think perhaps I will have to target the inner components css, and set them as display:none until the button is hovered over, then set :hover and :active pseudo classes inside edge. Is this feasible?
Thanks in advance for any ideas/suggestions...

Hello, Thanks for your helpful input. Based on that, and the tutorial 'http://tv.adobe.com/watch/learn-edge-animate-cc/ingesting-external-data-dc/' - I have written code to drive my button's behaviour. (copied below...)
var textArray =new Array();
var currentHead = 0;
var currentText = 0;
var currentFoot = 0;
var s = sym.getSymbol("textContainer");
sym.$("textContainer")$.("text").html("");
var sh = sym.getSymbol("headContainer");
sym.$("headContainer")$.("head").html("");
var sf = sym.getSymbol("footContainer");
sym.$("footContainer")$.("footer").html("");
$.getJSON("assets/sources1.json", function(data){
          for (var i=0; i<data.length; i++){
                    textArray.push({"head":data[i].heading,
                              "text":data[i].text,
                              "footer":data[i].foot,
                              "link":data[i].link});
          sym.$("headContainer")$.("head").html(textArray[currentHead]).heading;
          sym.$("textContainer")$.("text").html(textArray[currentText]).text;
          sym.$("footContainer")$.("foot").html(textArray[currentFoot]).foot;
          sym.$("footContainer")$.("link").html(textArray[currentLink]).link;
But there is an error I don't understand at line 7...
Also - as you can see, at present I have several symbols in parallel. Would I be better off nesting the text containers inside the outer button container? and would I be better off creating styled mini- pages of text data, and then loading them - instead of loading them as symbols? I have had to create seperate symbols because I cannot adequately stle the text - so some is bold, some is italic etc. within one text field. Or can I? I guess I could nest several text fields inside one symbol...?
I remain unsure how to load the finished animation button instances. In your example you were still loading into an animation But from yor example, I guess I would need to place all my examples inside an outer edge composition... but then I think positioning them accurately with css, making adjustments etc. will be fairly tricky. Is there any way to place multiple instances directly into divs in index.html? Could I simply repeat the class...? I may be answering my own questions here.

Since upgrading my mid-2010 MacBook Pro from the original Snow Leopard to Yosemite 10.10.2 there have been multiple instances of restart (crash) also slow operation. Any suggestions?

Since upgrading my mid-2010 MacBook Pro from the original Snow Leopard to Yosemite 10.10.2 there have been multiple instances of restart (crash) also slow operation & pop up message stating web content has failed. Any suggestions?

Many thanks for your interest, I've downloaded & run the app as suggested, report copies & pasted below.
Problem description:
Following upgrade from Snow Leopard to Yosemite 10.10.2 machine is slower & suffers from shut down / reboot and closing web pages due to unexpected error
EtreCheck version: 2.1.8 (121)
Report generated 6 February 2015 08:40:29 GMT
Download EtreCheck from http://etresoft.com/etrecheck
Click the [Click for support] links for help with non-Apple products.
Click the [Click for details] links for more information about that line.
Hardware Information: ℹ️
    MacBook Pro (15-inch, Mid 2010) (Technical Specifications)
    MacBook Pro - model: MacBookPro6,2
    1 2.4 GHz Intel Core i5 CPU: 2-core
    4 GB RAM Upgradeable
        BANK 0/DIMM0
            2 GB DDR3 1067 MHz ok
        BANK 1/DIMM0
            2 GB DDR3 1067 MHz ok
    Bluetooth: Old - Handoff/Airdrop2 not supported
    Wireless: en1: 802.11 a/b/g/n
    Battery Health: Normal - Cycle count 75
Video Information: ℹ️
    Intel HD Graphics - VRAM: 288 MB
        Color LCD 1440 x 900
    NVIDIA GeForce GT 330M - VRAM: 256 MB
System Software: ℹ️
    OS X 10.10.2 (14C109) - Time since boot: 0:13:14
Disk Information: ℹ️
    Hitachi HTS545032B9SA02 disk0 : (320.07 GB)
        EFI (disk0s1) <not mounted> : 210 MB
        Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
        Macintosh HD (disk1) / : 318.84 GB (134.68 GB free)
            Core Storage: disk0s2 319.21 GB Online
    MATSHITADVD-R   UJ-898
USB Information: ℹ️
    BUFFALO HD-PVU2 500.11 GB
        EFI (disk2s1) <not mounted> : 210 MB
        Time Machine Backups (disk2s2) /Volumes/Time Machine Backups : 499.76 GB (257.33 GB free)
    Apple Internal Memory Card Reader
    Apple Inc. BRCM2070 Hub
        Apple Inc. Bluetooth USB Host Controller
    Apple Inc. Apple Internal Keyboard / Trackpad
    Apple Computer, Inc. IR Receiver
    Apple Inc. Built-in iSight
Gatekeeper: ℹ️
    Mac App Store and identified developers
Kernel Extensions: ℹ️
        /System/Library/Extensions
    [not loaded]    jp.co.buffalo.driver.turbousbhdd (1.0.0) [Click for support]
Launch Agents: ℹ️
    [loaded]    com.hp.help.tocgenerator.plist [Click for support]
Launch Daemons: ℹ️
    [loaded]    com.adobe.fpsaud.plist [Click for support]
User Launch Agents: ℹ️
    [loaded]    com.google.keystone.agent.plist [Click for support]
User Login Items: ℹ️
    Skype    UNKNOWN (missing value)
    Safari    Application (/Applications/Safari.app)
    Dropbox    Application (/Applications/Dropbox.app)
    Android File Transfer Agent    Application (/Users/[redacted]/Library/Application Support/Google/Android File Transfer/Android File Transfer Agent.app)
    ConnectService    Application (/Library/Application Support/ArcSoft/Connect Service/ConnectService.app)
Internet Plug-ins: ℹ️
    Flip4Mac WMV Plugin: Version: 2.4.4.2 [Click for support]
    FlashPlayer-10.6: Version: 16.0.0.305 - SDK 10.6 [Click for support]
    QuickTime Plugin: Version: 7.7.3
    Flash Player: Version: 16.0.0.305 - SDK 10.6 [Click for support]
    Default Browser: Version: 600 - SDK 10.10
    Google Earth Web Plug-in: Version: 7.1 [Click for support]
    Silverlight: Version: 4.0.60129.0 [Click for support]
    iPhotoPhotocast: Version: 7.0
User internet Plug-ins: ℹ️
    CitrixOnlineWebDeploymentPlugin: Version: 1.0.105 [Click for support]
3rd Party Preference Panes: ℹ️
    Flash Player [Click for support]
    Flip4Mac WMV [Click for support]
Time Machine: ℹ️
    Skip System Files: NO
    Auto backup: YES
    Volumes being backed up:
        Macintosh HD: Disk size: 318.84 GB Disk used: 184.16 GB
    Destinations:
        Time Machine Backups [Local]
        Total size: 499.76 GB
        Total number of backups: 184
        Oldest backup: 2010-12-10 15:37:39 +0000
        Last backup: 2015-02-06 02:49:24 +0000
        Size of backup disk: Too small
            Backup size 499.76 GB < (Disk used 184.16 GB X 3)
Top Processes by CPU: ℹ️
         5%    WindowServer
         1%    ConnectService
         1%    Skype
         0%    systemstatsd
         0%    launchd
Top Processes by Memory: ℹ️
    193 MB    Skype
    168 MB    mds_stores
    132 MB    com.apple.WebKit.WebContent
    107 MB    Mail
    99 MB    ocspd
Virtual Memory Information: ℹ️
    889 MB    Free RAM
    1.99 GB    Active RAM
    455 MB    Inactive RAM
    825 MB    Wired RAM
    1.11 GB    Page-ins
    0 B    Page-outs
Diagnostics Information: ℹ️
    Feb 6, 2015, 08:27:32 AM    /Library/Logs/DiagnosticReports/com.apple.AmbientDisplayAgent_2015-02-06-082732 _[redacted].crash
    Feb 6, 2015, 08:25:19 AM    Self test - passed
    Feb 5, 2015, 04:37:08 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-05-163708_[redacted].crash
    Feb 5, 2015, 10:01:02 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-05-100102_[redacted].crash
    Feb 5, 2015, 12:03:59 AM    /Library/Logs/DiagnosticReports/HP Scan_2015-02-05-000359_[redacted].cpu_resource.diag [Click for details]
    Feb 4, 2015, 11:58:58 PM    /Library/Logs/DiagnosticReports/HP Scan_2015-02-04-235858_[redacted].cpu_resource.diag [Click for details]
    Feb 4, 2015, 11:54:35 PM    /Library/Logs/DiagnosticReports/HP Scan_2015-02-04-235435_[redacted].cpu_resource.diag [Click for details]
    Feb 4, 2015, 11:49:03 PM    /Library/Logs/DiagnosticReports/HP Scan_2015-02-04-234903_[redacted].cpu_resource.diag [Click for details]
    Feb 4, 2015, 09:40:16 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-04-214016_[redacted].crash
    Feb 4, 2015, 09:38:12 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-04-213812_[redacted].crash
    Feb 4, 2015, 09:27:56 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-04-212756_[redacted].crash
    Feb 4, 2015, 09:25:25 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-04-212525_[redacted].crash
    Feb 4, 2015, 09:20:16 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-04-212016_[redacted].crash
    Feb 4, 2015, 09:18:10 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-04-211810_[redacted].crash
    Feb 4, 2015, 09:12:54 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-04-211254_[redacted].crash
    Feb 4, 2015, 08:40:48 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-04-204048_[redacted].crash
    Feb 4, 2015, 08:22:04 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-04-202204_[redacted].crash
    Feb 4, 2015, 12:11:35 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-04-001135_[redacted].crash
    Feb 3, 2015, 09:44:33 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-03-214433_[redacted].crash
    Feb 3, 2015, 05:40:21 PM    /Library/Logs/DiagnosticReports/HP Scan_2015-02-03-174021_[redacted].cpu_resource.diag [Click for details]
    Feb 3, 2015, 09:05:45 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_20 15-02-03-090545_[redacted].crash
    Jan 28, 2015, 06:10:42 PM    /Library/Logs/DiagnosticReports/Kernel_2015-01-28-181042_[redacted].panic [Click for details]
    Jan 21, 2015, 10:51:25 PM    /Library/Logs/DiagnosticReports/Kernel_2015-01-21-225125_[redacted].panic [Click for details]
    Jan 20, 2015, 11:12:47 AM    /Library/Logs/DiagnosticReports/Kernel_2015-01-20-111247_[redacted].panic [Click for details]
    Jan 18, 2015, 09:57:31 AM    /Library/Logs/DiagnosticReports/Kernel_2015-01-18-095731_[redacted].panic [Click for details]
The only observations are that the backup drive is deemed too small and the quite long list of diagnostic reports dated between Jan 18, 2015 (which I believe is the day I upgraded to Yosemite) & today the latest Yosemite update was installed on Jan 28, 2015
Any further assistance will be appreciated

Multiple instances of firefox running cannot kill in task manager "Access denied"

There's no issue with starting a new instance after closing one, the "firefox is already running" error is not occurring (ok maybe once or twice a month, but it's not related to this problem, as my problem happens all the time.)
Apparently when closing a ff window it never fully stops. My computer slows down because of it and these multiple instances of firefox show up in Task Manager. When I try to kill the extra processes it just goes "BANG" and the "access denied" error dialog box appears. They are all running under my user account, and in CPU some are just 10 or 25 and some are in the hundreds and some are over a million. what the heck is going on?
I'm running Windows 7 64 bit and ff 23.0 but this has been happening since about ff 15 (?)

When closing Firefox completely, it is important to close it using the <i>Exit</i> button, located inside of the Firefox/File menu.
Another cause to this problem could be a Firefox preloader. Do you have any programs that will load Firefox automatically? They are supposed to improve start time.
You can also '''try Firefox Safe Mode''' to see if the problem goes away. Safe Mode is a troubleshooting mode, which disables most add-ons.
''(If you're not using it, switch to the Default theme.)''
* Open the Help menu and click on the '''Restart with Add-ons Disabled...''' menu item while Firefox is running.
''Once you get the pop-up, just select "'Start in Safe Mode"''
'''''If the issue is not present in Firefox Safe Mode''''', your problem is probably caused by an extension, and you need to figure out which one. Please follow the [[Troubleshooting extensions and themes]] article for that.
''To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.''
I hope that one of my solutions helps to fix your problem. Please report back with updates soon.
<b>NOTE: </b>You are using an outdated version of Firefox. This can cause security and functionality issue. Please update to the most recent version as soon as possible.

Having trouble running multiple instances of Firefox in XenDesktop 7.1

We recently upgraded our Citrix environment to XenDesktop 7.1. We published Firefox, but only one user at a time can have the program open. When we try to run multiple sessions, we get this error message "Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system."
We've had it published in previous Citrix environments with no problems. How do we need to configure Firefox in XenDesktop so that multiple users can run the program at the same time? Thanks.

I do not understand virtualisation.
I can however say that ordinarily Firefox needs each user to have a separate profile and for Firefox to open simultaneous multiple instances with separate profiles the ''-no-remote'' argument needs to be used.
* http://kb.mozillazine.org/Using_multiple_profiles_-_Firefox
* http://kb.mozillazine.org/Opening_a_new_instance_of_your_Mozilla_application_with_another_profile

Multiple instances of explorer.exe running in task manager

I got a dropper trojan virus on my computer that microsoft security essencials do not recognized but after running "superantispyware" antivirus I got discover it and delete it. After that, I still could find the infected files in my
administrator folders as .temp files and I just erased them. After that my computer started crashing and runing several instances of explorer.exe in the task manager with different memory values, some of them ascending to 350,000. I have set up my computer
to run just the basic services, I have tried windows in safe mode, ran other antivirus programs but still it is performing the same. As far as I have noticed other unusual process present are host.dll, dllhost.exe, and logonUI.exe. Any idea about it? Thanks
in advance for your help.

I have the same issue. It started about a month ago when I was filling out a form online and had to quit and close the window. My system got very buggy (can't remember details), flashing, then really slow. Found a bunch of explorer.exe instances
in Task Manager. Ran Security Essentials and several other anti-viruses, nothing found.
Running Win7 Pro, sp1, 64-bit, CoreI5, 4Gb Ram
Restored system to a previous version, didn't work
Restored last system image, didn't work
Used System Repair Disk - ran Memory Diagnostic. Said it would give me report after reboot. Never saw a report after reboot. But only one instance of explorer.exe in task manager at that point. Took disk out, rebooted normally. After
20 minutes or so, the multiple instances were back.
Used Repair Disk again, ran Memory Diagnostic. Again, no report after reboot (leaving disk in machine both times), but only one instance running again.
Did this a few times with the same result, so now leaving disk in system and always boot from it.
Ran Security Essentials again, found that rovnix virus, removed, ran again, found it again.
Ran search for instances and found many. Here's an example:
C:\Windows\explorer.exe
C:\Windows\winsxs\wow64_microsoft-windows-explorer_31bf3856ad364e35_6.1.7601.17567_none_b9fc4815c4e292b5
C:\Windows\winsxs\amd64_microsoft-windows-explorer_31bf3856ad364e35_6.1.7601.21669_none_b0333b22a99da332
C:\Windows\winsxs\wow64_microsoft-windows-explorer_31bf3856ad364e35_6.1.7601.21669_none_ba87e574ddfe652d
C:\Windows\winsxs\amd64_microsoft-windows-explorer_31bf3856ad364e35_6.1.7601.17567_none_afa79dc39081d0ba
C:\Windows\SysWOW64
When I check properties on the now single one on Task Manager, this is what it shows:
C:\Windows\winsxs\amd64_microsoft-windows-explorer_31bf3856ad364e35_6.1.7601.17567_none_afa79dc39081d0ba\explorer.exe
C:\Windows\explorer.exe
I was going to reinstall entire system, but was from an Anytime Upgrade which now says it's invalid. Much more to story on that (calls to MS support, etc.).

Multiple instances of Internet Explorer in task manager using 100,000 KB+ memory

Hi! I recently got a virus on my computer that causes multiple instances of explorer.exe and iexplorer.exe to appear in my processes tab of task manager. Over the course of about a minute, the memory usage of each begins to climb rapidly until all of my
memory is being used by these. These do not appear in my applications, nor do they actually open up an internet explorer window. When I end task on them, another one appears about a minute later to take its place and do the same thing again. Additionally,
when I click shut down to turn my computer off, various advertisements flash on my screen for a few seconds before the computer begins to shut down. When the computer is started up, a window appears for a split second that contains only blackness. I have never
seen this window appear before the virus was obtained. When I end task on all my explorer.exe and iexplorer.exe applications at the same time, my desktop vanishes, but it also stops those applications from reappearing. This virus has caused my computer
to run unbearably slow. I have tried Spybot S&D, Exterminateit, AVG, Roadkill, and other methods and nothing seems to detect this or cure it. I am not that good with computers, but I am dying for help on the matter! If you can assist, please let me know
what I can do with detailed instructions for my sake! Thank you!!!!!!

See and follow Andy's excellent advices.
In addition...
See: "How to
Reset Internet Explorer settings".
If the issue persists...
1. Please download and run the
Microsoft Safety Scanner tool (freeware).
2. Reboot your PC.
3. Please download and update Malwarebytes Anti-Malware Free
4. Reboot Windows in
Safe Mode and run a Full Scan with Malwarebytes Anti-Malware.
5. Download and Run AdwCleaner (Freeware)
6. Reboot and Test.
Best of Luck,
Vincenzo Di Russo
Microsoft® MVP Windows Internet Explorer, Windows & Security Expert - since 2003.
Moderator in the Microsoft Community and TechNet Forums
My MVP Profile

Open multiple instances for a VI

Dear all,
I created an application to open multiple instances(RecipeEditor.vi as attached)works fine in debug mode. But, after I build it to an exe, it gives me error 1003.
Can you please show me some pointer what is wrong?
Please find attached zipped package
Thank you in advance.
Regards,
Vincent
Attachments:
New folder.zip ‏1742 KB

my apology, Norbert.
I attached the wrong file. This attachment is password removed.
Thank you in advance
Attachments:
Recipe Editor.vi ‏286 KB

How do I prevent a user from opening multiple instances on the same computer?

On the site oldnavyweekly.com there is a .swf that prevents users from opening multiple instances of the site at the same time on the same computer. If you open the site, and try to open it a second time in another window, it won't load. You can't open the site again until the first window is closed. How did they implement this?
From my analysis it is NOT:
1. Cookies - The block still takes place if you try opening it in IE and also try opening it in Firefox simultaneously.
2. Flash Cookies - The block still takes place if I disable flash cookies.
3. IP Based Block - You are not blocked if you open the site on two separate computers with the same outbound IP address. From my analysis, their server does not assist in the block at all.
It seems as if their .swf is creating some kind of global system-wide object that can be detected in other instances of the application on the same machine. How did they implement this?
Thanks!

you're welcome.
actually, unless you take an extra step, the first opened swf will close. if you want the 2nd to close, the initial receiving lc will send a message to sender that causes the sender to close.

Multiple instances of reentrant VI in a modular way

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