Issues in understanding parallel computing in Labview

In my data acquisistion project, I use case strructres in while loops to navigate through my entire project. Some of the while loops are:
Producer loop
Consumer loop
Acquistion loop
Logging loop and so on...
My procuder loop usually contains buttons which link to the appropriate case structure in the consumer loop via Enqueue message.vi Everything works fine untill I preform some "parallel computing".
For example, If I press run button which activates a case structure in Producer loop and later activates a case structure in consumer loop and goes on untill it ends up in an appropriate loop and continues to run in that loop.
Now, if I press log button it goes through all the loops and ends up in the loop where it is intended to be. It all works fine.
Now the issue, Sometimes these loops just hang up at a spot. They dont send message queues. They just continue the loop that was last run. Further pressing of any buttons on the GUI does nothing in the vi. I have no clue why labview behave like this. Sometimes it works if I press the button in certain sequence and that sequence does not make any sense, it was all just trail and error. The error is not even on the hardware side, as I have tested it with the simulated devices in MAX. I believe that this mostly happens when i try to run two case structures in the same loop, but I though labview can do parallel computing. what are your views on this situation?
Labview Learner
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Ashaironix wrote:
basic question is will labview be able to handle running two case structures parallely within a same while loop.
Two different case structures? Yes. Two cases inside the same case structure? No.
From your description earlier, it sounds like you are having loops inside of your case structure. If that is the case, then you are blocking your loop with the case structure from being able to check for messages. Everything inside of a While loop must complete before it can iterate to run again. If you have a repetitive case to run, reenqueue that state so that you can check for messages and run again when it gets dequeued.
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Fast enough computer for LabView?

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Jaime Rios wrote:
>Hello, I would like to know if I have a fast enough computer for the>application
I'm developing. I have just ordered the PCI/232-16 Serial>Interface card
from National Instruments and plan to use it with a>Pentium 150 running Windows
NT with 64MB of memory. I'm writing the>LabView program to contain 16 individual
whi
le loops for each ports of>the interface card (that's 16 while loops,
just to let you know). I'll>be constantly writing and reading from the ports
and displaying the data>read by the port. If anyone can comment on what I
have so far, or can>say anything about how fast LabView code executes, I'd
greatly>appreciate it.>>Thanks,>Joe>

Issues in understanding parallel computing in Labview

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