Maximum limit for the number of periods loops that can be run at the same time?

I am developing a simulator that requires many pieces of code to execute in parallel.  As a result, we were in loops just for this purpose.  I didn't count but there are close to 100 call loops that eventually run at a given time.

A week ago, I've reached a point where the Simulator was working fine but when I added a more timed loop, it would break LabVIEW.  When I say LabVIEW crashed, I want to say there is no warnings that popped up, and LabVIEW just stopped completely.  Worse still, LabVIEW didn't offer even to recover the work when I start it back up again.  However, removing an additional timed loop allows everyone to work normally again.

I'm under LabVIEW 2009 Version 9.0f3 (32 bit).  I have observed this behavior even on two different systems, one that is 3.2 GHz Xeon Quad-core with 2.0 GB of RAM, running Windows XP SP3 (32 bit) and the other is a 3.0 GHz AMD Athlon 64 Dual Core with 4.0 GB of RAM, running Windows 7 Professional (64 bit).

Because the two systems are quite different, and LabVIEW appears to hang at the same point, I wonder if someone has already noticed such behavior.  I searched online and can't seem to find any reference to such a limit on call loops.

One last thing.  I made an attempt to replace all the loops timed with while loops, but this seems to lead to some kind of hunger because the Simulator becomes suddenly jerky, without seeming to consume all resources more than when the call loops were in place.  So, which doesn't seem to be an option.

I think that you are limited to 128 Timed loops in a system. Could not find anything by specifying that online, I am sure that I heard him. Also, the Sources Software-Triggered clock Timing loops can only be counted between 0-127.

However, it certainly sounds like a bug that LabVIEW would crash during the approach of this limit rather than up a significant error.

You can do some things to help avoid the unstable behaviour of the normal use of many parallels while loops. Place one or more loops in subVIs and then distribute these subVIs enforcement systems . This will give you your application with multiple threads of execution, which will reduce the ground being. If you don't do this, your curls probably all run System Standard of performance, which, by default, cannot have 8 wires at his disposal to share between all the loops.

Tags: NI Software

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