Memory Leak using Python API

[ajfi...@gmail.com]

Hi all,

I've been struggling to keep my memory Python usage from growing as I use OpenVSP to batch run analyzing multiple geometries.

I made a relatively simple test to demonstrate this, python code is attached.

The attached image shows a plot with the results I'm seeing.

As you can see, even though I'm running vsp.ClearVSPModel() and vsp.DeleteAllResults() at the top of the loop, the ram used continues to climb, even if all I do is ReadVSPFile.

Any suggestions on something I could do to prevent this memory growth, other than shutting down Python and restarting it fresh for each design point?

-AJ

[Rob McDonald]

That is really interesting.  Pretty sure this is a bug (nothing you can do to fix it).  There are a few places for me to look -- if it isn't there, then this will get 'interesting'...

My first step will be to convert this example to an equivalent *.vspscript test.  This is really just so I can run the test in my normal debugger and with Valgrind and other diagnostic tools.  I don't know how to connect those to a Python instance and while it is probably possible, it is surely easier for me to duplicate your test case in AngelScript.

Rob

[jordi nosaurio]

I think I faced something similar and solved it closing the API each loop with:

vsp.VSPExit(0)

Not sure if it is your case

[AJ Field]

Jordi,

That's an interesting idea, thanks for the suggestion! But when I add a call to 'vsp.VSPExit(0)' into my loop, it exits the entire python process, not just the OpenVSP module. Did you find some way around this?

-AJ

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[jordi nosaurio]

Hi AJ,

I cannot find the specific example I was dealing with, but I remember It was related to the python IDE (I was using Spyder). If I run the python script alone (no IDE), it did not close the python process, and the memory did not grow. Sorry If I am messing the things, was just it sounded familiar.

cheers