Parallel process with reentrant VI have same value in both threads

Has it been so long since I programmed LabVIEW that I forgot some basic stuff??
I have a main VI which originally called dynamic processes in parallel.
I then called the sub-vi's dirtectly and still run them in parallel, but thwey now have seperate names.
I use a QSM. Each parallel thread now has it's own QSM, because although I was using a Queue Name for each dynamic queue, the data that was being extracted was shared or done between the two threads. If I confused everyone with the statement, I shall explain.
Two parallel processes, calling a QSM (re-entrant). They have the same number of elements and matching sets.
EX:
Process 1          Process 2
Task1                 Task1
Task2                 Task2
Task3                 Task3
Task4                 Task4
Task5                 Task5
Task6                 Task6
I was expecting each thread (each process) to extract from the queue the list of tasks as entered (from Task1 to Task6). What the processes were getting was the following:
Process 1          Process 2
Task1                 Task1
Task2                 Task3
Task4                 Task5
Task6                 default
Each Process was sending a different Queue Name to the QSM. Each queue should have it's own name.
I need to get this running by tomorrow with no excuse! So I decided to do a lame workaround by also having 2 QSMs. That fixed it..
In each parallel process (which are a copy of each other with different names) there is a call to open a telnet session. I probed and placed breakpoints in the code. Although each process has a different name and the call to the function that opens the telnet session is re-entrant, the very same telnet reference number is assigned to both processes.
Why? Why would they get the same reference number? I made all vi's down to (and including) Telnet Open Connection as re-entrant (although it was not needed) and it still assigns the same reference number to each telnet session. Why? What I am not seeing? What am I missing?
Unfortunately, I cannot post the code.. But it is not complicated code. Just 2 sessions with different IP addresses. I would expect different telnet session references...
As a matter of fact, I need to try something silly..

I should provide more details with the solution....
I just have to stop saying "D'Oh!!"
Okay... here goes...
In the LVOOP, I am using Notifiers and Semaphores to ensure that a race condition cannot occur. Works well with previously written code.
In this particular implementation, I have the same / similar object being created more than once (twice at this time).
Where I went wrong (D'Oh!!!!), was to have a static name for a given object when creating the Notifier and Semaphore references. Since the same name was given, so was the reference. SInce the references were the same, so was the data, and so on.
D'Oh!!!!!!
D'Oh!!!!!!
Now I know why a particular bird was called D'Oh-D'Oh bird...
D'Oh!!! Such a silly mistake...
D'Oh!!!
Hope it makes a few people laugh... or help another bird....

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Hello, first of all sorry for my bad english^^:
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Attachments:
Queue_Data_Parallel_FORUM.vi ‏23 KB

LapLapLap wrote:
Hello, first of all sorry for my bad english^^:
I am working for days on my project where I have to show the parallel process while transfering information by different ways and their problems (like timing and so on).
I chose the transmission of information to a parallel process by (1) a queue, and by (2) a file (.txt). (other ways are welcome, do you have 1-2 other ideas?)
To solve this problem I made three while loops, the first one is the original one, where the original information (as a signal) is created and send by queue and file to the other two while loops, where this information is getting evaluted to create the same signal.
so in the end you can compare all signals, if they are the same - so that you can answer the question with the parallelity of process.
but in my vi file i have some problems:
the version with the queue works pretty fine - it's almost parallel
but the version with file doesn't work parallel, and i have no idea how i can solve it - -
i'm a newbie^^
can someone correct my file, so both (file and queue version) run parallel with the original one, or tell me what i can or must do?
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/Y
LabVIEW 8.2 - 2014
"Only dead fish swim downstream" - "My life for Kudos!" - "Dumb people repeat old mistakes - smart ones create new ones."
G# - Free award winning reference based OOP for LV

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Thanks for your help........
-Christine

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Hi,
I've a table
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Message was edited by:
        jeneesh

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