Hfss not opening in PyAEDT 0.17.5 when running PSO optimizer – session reuse or memory issue?

[markmaxed]

Hi everyone,

I’m running a Particle Swarm Optimization (PSO) script where I open an HFSS project once, then pass the same Hfss session instance to multiple iterations (calling design updates, exports, and analysis). This worked fine in earlier PyAEDT versions.

However, after upgrading to PyAEDT 0.17.5, the optimizer no longer opens HFSS successfully. It seems stuck at the point where the Hfss object is initialized.

Some thoughts:

- Could this be due to reusing the same session across many iterations?

- Or is this potentially related to higher memory requirements since the optimizer performs multiple simulations?

 - Or is this behavior introduced in PyAEDT 0.17.5 (I noticed API changes around Desktop management)?

Has anyone experienced similar issues with session management in 0.17.x? Are there best practices for long-running optimizers with many iterations (e.g., always use new_desktop=True per run vs. reusing sessions)?

Any advice or insight from the community would be appreciated!

Thanks!

[SMoraisAnsys]

This is strange, could you share with us à reproducer and test the current dev version ?

[markmaxed]

I have sent you an invitation to my repo