Parent VI recompile. When and why?

[MimiKLM]

When parent VI is going to recompile itself due to changes in child VI, and when it is not?

[billko]

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@MimiKLM wrote:

When parent VI is going to recompile itself due to changes in child VI, and when it is not?

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Look here.  it was the second hit on a google search using this term: labview when does vi recompile

[Norbert_B]

To add "why":

The compiled code also contains a section called "inplaceness information". This section tells the caller (parent VI) if a parameter can be passed by reference (no copy) or by value (copy).

If changes in the subVIs can effect the way parameters are handled, the caller has to re-evaluate the inplaceness info, hence, it has to re-compile.

Norbert

[Norbert_B]

Another thing just coming up in my mind:

If it is of concern for you that re-compilation of the caller (parent) changes the .vi-file so it has to be saved on disk again, you should use the option to separate compiled code from the vi-file.

Norbert