Queue Limitation

[jyang72211]

Hi all,

Is there a limit with queue?  I have two parallel loops.  The first loop reads from the buffer continuously for analog in data and enqueues the data.  The second loop contains a subvi that would take the queue reference and dequeues continuously.  I went in to debug mode, and I saw that the program waited at dequeue a little until there are data on the queue, which makes sense, but it didn't dequeue anything.  Each queue element is a 2d double array with 32 rows and 10000 column.  Is that a problem?  Why won't my program work?  Thanks!

[smercurio_fc]

The first question people will ask is to look at your code. Presumably this is a continuation of this thread, but as to how the question is different from what you asked in that thread, it's not clear to me.

[Will_S.]

It may be helpful to look at the Queue Basics example in the NI Example Finder (LabVIEW: Help >> Find Examples...) for an example of dequeueing elements.

[Ben]

1)

Monitor the "TIme Out" returned by the dequue operator to determine if anything was retrieved from the queue.

2)

 Check the error cluster for the dequeue to make sure the queue is valid.

3)

Make sure the the queuer and queuee are using the same queue.

4)

Make sure ther code that queues oup the message is actually queueing up the data.

If you need more help please post some code.

Ben