How do I get 4 reentrant vi's not to call the write file vi at the same time?

[Bullet]

I did not attach the top level because it calls 450 sub vi's and is about 60mb.

[Bullet]

Thanks for the explination. I have never changed the pull down menu options. Is there any supporting documentation for these options? If so where might I find them? Thanks

[John Rich]

Perhaps you could write a small top level vi which shows the problem that you are having and just post that. With all of the vis that you posted (there are 15 total) I don't know where to start looking.

[Bullet]

Let me try that. Give me a bit.

[Bullet]

This is the two vi's that are included in the on that is reentrant.

[TylerS]

Yes, there is documentation on these properties. If you open LabVIEW help and search for VI Properties, you can select VI Properties, which shows up about 10 down on the list, oddly enough. Anyway, click on that and it gives you a list of all the properties that can be changed in that menu. About 12 down on this list is Execution: Preferred Execution System (right about it is Execution: Is Reentrant which may come in handy too). Click on details and then click on "Using LabVIEW to create multi-threaded VI's for maximum performance and reliability", which brings up an Adobe document. Page 5 of this document explains the User Interface execution property.