Learning Forum

[jacobcurtis24]

Which simulations in HFSS are GPU accelerated? I can't find this information on the platform support page. NVIDIA lists some GPU accelerated tasks on this page: https://www.nvidia.com/object/tesla-ansys-accelerations.html , but I'm not sure if it's a complete list.

In my group, we do a lot of eigenmode and driven modal simulations of complex devices. Would one of the supported GPUs accelerate these simulations?

 

Thanks

[Sorceress Gia]

GPU acceleration in HFSS for FEM models is limited to very large models that require > 256GB of RAM. If your models are not using this much RAM than GPU acceleration will not yield any advantages.

[AndyJP]

Dear Peter, but are there really such GPU monsters with 256Gb and more RAM onboard?

In several whitepapers, including nVidia promo, I read that frequency domain acceleration is implemented in HFSS 2020. Since MOM-IE was removed from later E-desktop versions, I guess, it should be the "driven modal" solver, which was transferred to GPU. Am I correct?

If so, is there a way to force solving in GPU for freeing workstation's CPU resources for other tasks? I have a mediocre CPU, and quite a powerful Quadro board, but never seen the latter used by HFSS.   

[AndyJP]

up

[AndyJP]

I guess, nVidia whitepaper and promo articles are hoax, created for boosting sales of quadro/tesla boards, almost useless in electric engineering. I wonder, what price it paid for ANSYS closing its eyes on such disinformation.

We just spent helluwa lot of $ for these boards which just do not run. I would better purchase extra CPU and Optimetrics licenses instead.

[AndyJP]

Worse. I tried building a project with ferrite, and HFSS 2020R1 appeared still incapable of solving ferrites with transient solver.

And I've clearly seen presentations and papers by nVidia and Ansys, where rect-guide Y-circulator design was demonstrated and heavy acceleration with Tesla GPU was claimed

What a fraud!