How does the operating system manage labview vi's

Background:
I am using compact field points and low end compact rio's for my projects and I am approaching the RAM limits of my devices.
I am looking to modify my coding practices to minimize RAM usage.
I follow the "Labview 101" do's and don't for optimised code but I need more information about how the VI's are handled in memory.
My background is in embedded C coding where when a function is called the code is run from ROM and uses memory from the stack, releasing it on completion.
My observations (best quess) from my cFP application is that all vi's are unpacked (decompressed) into RAM (takes 5-10 minutes) and executed is from there. Each .VI keeps it's memory.
My application uses quite a lot of code reading configurations at the start, never to be used again. I am speculating that this resides in RAM until the end of time.
If this is the case, is there a method to release the unwanted VI from memory.
To minimise RAM usage I tend to use In Place structures and wire data in and out of VI's using it.
Attached code snippet show data from an object being passed through a sub .VI.
I want to be sure that additional RAM isn't being used here, If so I will need to do the manipulation directly to the object.
iTm - Senior Systems Engineer
uses: LABVIEW 2012 SP1 x86 on Windows 7 x64. cFP, cRIO, PXI-RT

tst,
Thanks for the links.
The array allocation is a bit of an eye opener, I will think carefully about how I use arrays.
I have seen the OOP one before, re-reading it was helpful.
I found a few hints about default data.
It does illude to once all vi's (not dynamicaly loaded) are loaded into memory and stay there, required or not.
In the case of dynamic allocation, this makes sense for a transient object, in my case the objects hand aroung, about half of the methods are only called at startup, Squatting on memory without further need.
I can think of an ugly workaround where a "Read Config" VI is dynamicaly loaded, Hands off it's data to a more permanent object before being dumped.
I would like to know more about the deallocate memory VI, Does it Dump RAM and Program or just RAM?
Does it apply to LVOOP Methods?
iTm - Senior Systems Engineer
uses: LABVIEW 2012 SP1 x86 on Windows 7 x64. cFP, cRIO, PXI-RT

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How does the operating system manage labview vi's

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