Running multiple DAQ tasks at the same time

I am trying to setup a program that would allow me to run different analog voltage waveforms on different channels.
The rate at which samples hit each channel can be the same for all 32, but I want each to be sourced by an individual file I/O source.
I saw the multiple tasks thread and I did try doing the multiple task approach first and needless to say got the same error.
Saw something about software timed approach working better, but it is still a bit unclear in that post. Can i do with this card what I described above and if so is this software timing approach the way to go?
Thanks in advance!

Hi,
What DAQ device and and programming language are you using, i.e., LabVIEW/CVI/.NET? If you are new to DAQ, a great place to start are the example programs. You can find the example programs with the Example Finder, located at Help >> Find Examples in both LabVIEW and CVI. Once this opens, double click Hardware Input and Output >> DAQmx >> Analog Generation. This will have many programs for generating waveforms. I have also found a program online that might be worth looking at.
Continuous Multiple AO Waveforms
Regards,
Jim Schwartz

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Problem running multiple folder actions at the same time

Hi,
Does anyone have some experience running multiple folder actions at the same time?
I've written a Applescript folder action that processes some files. When adding some files, the script starts and all goes well. The processing of each file takes a few minutes, but all files are processed correctly.
However, when adding some new files to the dropfolder, while the folder action is all ready processing other files dropped a few minutes earlier, the process that is all ready running immediately aborts and the folder action is relaunched on the new files, leaving the old files for what they are...
The same problem occurs with multiple folders, each having a folder action attached. When dropping files in "Folder A", the script starts processing. But if someone droppes files in "Folder B", The script of folder A aborts, and the script of folder B starts processing. When adding more files to the folders, the result is the same. In some casses, when the last dropped files are processed, the os continues where the operation was aborted on the previous files. But this not always happens. To make things worse, when you remove the items from the folders afterwords, the folder actions starts running again on items no longer present in the folder !!!!
Does anyone know how I can prevent the folder action being aborted when new files are dropped and placing the new files in "Hold", until the previous files are processed? How can I prevent a folder action being aborted when a item is dropped into another folder?
I've written a small script to test this behaviour. Just create one or more folders and attach the script below. Drop a item into the folder, wait a few seconds and drop another one in the same or another folder. To monitor what happens please check the console.
on adding folder items to this_folder after receiving added_items
          set FolderName to this_folder as string
          set ItemName to added_items as string
          repeat with theIncrementValue from 1 to 15
delay 2
                    do shell script ("logger \"Folder: " & FolderName & " - Item: " & ItemName & " - Step: " & theIncrementValue & "\"")
          end repeat
          do shell script ("logger \"Folder: " & FolderName & " - Item: " & ItemName & " - Done...\"")
end adding folder items to
Thanks for any feedback.

That is pretty much the way Folder Actions work, especially since AppleScript is not multi-threaded. If you are using them as some intermediate step in a workflow, you might rethink the way you are handling the files (for example, use a droplet instead). Other options would be using launchd to watch a path or a shell script on a different thread.

PowerShell using start job to run multiple code blocks at the same time

I will be working with many 1000’s of names in a list preforming multiple function on each name for test labs.
I notice when it is running the functions on each name I am using almost no CPU or memory. That led me to research can I run multiple threads at once in a PowerShell program. That lead me to articles suggesting start-job would do just want I am looking
for.
As a test I put this together. It is a simple action as an exercise to see if this is indeed the best approach. However it appears to me as if it is still only running the actions on one name at a time.
Is there a way to run multiple blocks of code at once?
Thanks
Start-Job {
$csv1 = (Import-Csv "C:\Copy AD to test Lab\data\Usergroups1.csv").username
foreach ($name1 in $csv1) { Write-Output "Job1 $name1"}
Start-Job {
$csv2 = (Import-Csv "C:\Copy AD to test Lab\data\Usergroups2.csv").username
foreach ($name2 in $csv2) { Write-Output " Job2 $name2"}
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You say your testing shows that you are using very little cpu or memory in processing each name, which suggests that processing a single name is a relatively trivial task.
You need to understand that using a background job is going to spin up another instance of powershell, and if you're going to do that per name what used to require a relatively insignificant amount of memory is going to take around 60 MB.
Background jobs are not really well suited for multi-threading short-running, trivial tasks. The overhead of setting up and tearing down the job session can be more than the task itself.
Background jobs are good for long-running tasks. For multi-threading short, trivial tasks runspaces or a workflow would probably be a better choice.
[string](0..33|%{[char][int](46+("686552495351636652556262185355647068516270555358646562655775 0645570").substring(($_*2),2))})-replace " "

Can ADF keep multiple pages open at the same time?

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Much appreciated,
Daniel

Daniel Kaiser wrote:
Hm, yes, this looks like it could be a possible solution for my problem. I'm gonna try to apply this to my app and get back to you. Thanks for the helpful answer!If you will have any questions on the application of the UI Shell template, then it is better to ask they here
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We have a PCI-6110S to run our VIs. But, we are planing to buy another card (PCI-6024E) to run real time PID vi. So, if they are installed at the same computer, would it be a problem for LabVIEW to run both of them at the same time.

We have PCI-6110 S series installed in our computer. We are planing to purchase PCI-6024 E series card. They will be both installed at the same computer.
1) I am wondering if we run both of them at the same time, would we have any problem?
2) To run PID real time, can any E series of PCI card be used?
Thanks...

Hello Baho,
1) Using Traditional NI-DAQ, there could be problems with the fact that the NI-DAQ driver is not multi-threaded; meaning that while waiting for one operation to complete, the driver could cause another operation to time out. On the other hand, DAQmx is multi-threaded, and would eliminate this problem. At the time of this writing though, DAQmx does not yet support simultaneous-sampling boards like the PCI-6110S. A good solution then would be to use Traditional DAQ for the 6110S and DAQmx for the E-series board, and they would by default run in separate threads.
2) No, using a PCI E-Series board, the LabVIEW VI would have to run in a Windows OS and would not be Real Time or run deterministically. You can run the PID program in Windows, but the
results could be inconsistent. The advantage of a Real Time is that the OS is deterministic or that the OS allows you to tightly control or determine the maximum time any function takes to operate. This kind of control of the maximum operation time is not possible with non-Real Time OSs such as Windows.
If you would like to get set up with a Real Time System, I suggest you contact your Technical Sales Representative.
Regards,
Chad Evans
National Instruments

How do I view multiple inbox folders at the same time in Mail?

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How can I run 2 Dreamweaver windows at the same time?

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basically I have 2 monitors and I want to edit CSS on one
monitor and have the html page open on the other so I can quickly
look from one to another with in a split second instead of taking
that extra time to switch back and forth using the tabs at the top,
I know I should probably invest into a mac so i can work out side
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Maurice

Open the CSS in DW, and use F10 to open the Code Inspector.
Place the
latter as needed.
Murray --- ICQ 71997575
Adobe Community Expert
(If you *MUST* email me, don't LAUGH when you do so!)
==================
http://www.projectseven.com/go
- DW FAQs, Tutorials & Resources
http://www.dwfaq.com - DW FAQs,
Tutorials & Resources
==================
"Random_Yggdrasil" <[email protected]> wrote
in message
news:gi2htb$j4j$[email protected]..
> How can I run 2 Dreamweaver windows at the same time on
my PC?
> basically I have 2 monitors and I want to edit CSS on
one monitor and have
> the
> html page open on the other so I can quickly look from
one to another with
> in a
> split second instead of taking that extra time to switch
back and forth
> using
> the tabs at the top, I know I should probably invest
into a mac so i can
> work
> out side of the Dreamweaver application window and I
will in the future
> but is
> there any way i can do this on my windows XP pro PC?
>
> Thank you
> Maurice
>
>
>

How to open multiple hotmail accounts at the same time ?

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Since upgrading to Mavericks, I can't run Mail and Safari at the same time.

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Launch the Console application in any of the following ways:
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What do you think about running 2 security solutions at the same time? [malware event]

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Is there anyone here running 2 Security Solutions at the same time?
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(Current: W520 4284-A99) (Refunded: W510 4876-A11)
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Mark it as solved if the solution works for you, so it could be reference for others in the future
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http://forums.lenovo.com/t5/W-Series-ThinkPad-Laptops/W520-Sound-Enhancement-Thread/m-p/451401#M155...
Solved!
Go to Solution.

Hello,
Generally speaking, you should not run two security programs together at the same time which run in "real-time," e.g., they are actively monitoring the system. The reason for this is that the various real-time components (on-access file system scanner, network traffic filter, and so forth) may interfere with each others operations as they both attempt to access the same bits at the same time. This can lead to all sorts of strange system behavior, such as slowdowns, program crashes, failed downloads and lock-ups.
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Why can't I run Safari and Skype at the same time without making my computer freeze up?

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I haven't gone to the trouble of actually testing to see which uses more CPU power, but Firefox has been faster than Safari on every Mac I've ever owned.
To see CPU usage by process, open the terminal (in Utilities) and enter 'top' at the command line. You might have to expand the window as processes don't appear in any logical order.
It could also be hardware-related: I have late 2009 mini with similar specs and it pinwheels easily.

How to run two vi's at the same time, one uses an AI task with 8 AI channels the other a single AI and AO channel???

Hello Everyone,
Here is my situation. I have one vi that is reading an AI task of 8 channels AI0 --> AI7 (one sample on demand) and also has control of all of the digital outputs on the board. My problem is that I want to run another vi that will use the last AI channel AI8 and an AO channel AO0. These two vi's do not need to know anything about one another but I do need them both to be running at the same time. Currently when I try running the two vi's together both vi's crash and I get an error message stating that the AI8 pin is reserved. AI8 is not part of the task and is not refrenced anywere in the larger vi. I am assuming that this problem is do to the fact that the larger vi is occupying the DAQ board, cycling through the task when the smaller vi is requesting data from AI8 and the DAQ board cannot do two things at once. The sampling rate on the smaller vi is not really that important. Is there anyway I can get the smaller vi to read from AI8 and not crash??? Software and Hardware listed below. Thanks in advance for any suggestions.
PCI-6221
Labview 7.1

Hi steve ,
Sorry to say that you cannot configure and acquire from AI channels on a Device simultaineously from 2 seperate VI's.
regards
Dev

Running multiple DAQ tasks at the same time

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