pyMechanical stability

Dear all,
I am currently working on a script to automate my Ansys Mechanical thermal simulation. For that, i am using pyMechanical to export Ansys Mechanical capabilities in a script. It works ! That's the good news ! However, i have more than 2000 simulations to do and the script never go above 100 calculations and crash before...
You will find attached the code (I do not how add code on this forum...)
Sorry my comments are in French but it is quite straightforward.

I have been finally able to use exactly this code in Ansys Mechanical Scripting using CPython (beta) and replacing Quantity by the full link attached to this last function and it works very well without crash...
So i think the code is not so bad (of course not very great, i am a very young developper, and even not developper...) but it appears that work with Ansys Mechanical Scripting (so with the graphical interface open) is a bit smaller than pyMechanical. So, it could be interesting to make this code working...
I am using Spyder 5.5.0 and python 3.8.10 as development environnement.
Generally speaking, when it crashes, two types of message appear (not at the same time!):

fatal python error: aborted (then a reference to the Python kernel)
windows fatal exception: access violation

Thank you for your help !
Pierre

Principal_post_console.py

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Comments

PierreLCV

Hello,
Working on this topic it appears that i have a lot of error message during the calculations process (before it crashs!):

Does anyone knows what does it mean ? I specify that 1, 2, 3, 4... is a counter that tells me when a calculation has been completed, so I can keep track of it...

Thank you for your help !

Best regards,
Pierre

PierreLCV

Hello,
My simulations crashed again but this time I have an error message:

Maybe someone will be able to guide me on this !

Thank you
Pierre

Landon Mitchell Kanner

Hi Pierre,
You are using embedded PyMechanical, which loads all of Mechanical into Python's memory. My best guess is that you are overwhelming the memory requirements of Python. Could you perhaps use remote pyMechanical instead?

@mohamed-koubaa , Any insights?

PierreLCV

Dear Landon,
Indeed, this script is using PyMechanical embedded.
I started by using remote pyMechanical but honestly i do not see any advantages to use this as we can use Python directly in Ansys Mechanical... More precisely, my main concern about remote pyMechanical was the necessity to send to Mechanical only IronPython compatible commands.
In short, in my case, executing the script directly in Ansys Mechanical using CPython as needed is more efficient than using pyMechanical embedded (stability problem presented before) or pyMechanical remote which do not offers more possibility as Mechanical Scripting...

Thank you very much for your help !
Pierre

Pernelle Marone-Hitz

@PierreLCV , if the code works in standard Mechanical but crashes in PyMechanical, please open an issue in Github to let the PyMechanical dev team know. https://github.com/ansys/pymechanical/issues Many thanks.