HFSS Slow Frequency Sweep

- July 11, 2022 at 6:59 pm
  
  kuhnk
  Subscriber
  
  Hello,
  I am running a frequency sweep in HFSS to determine the bandwidth of a periodic waveguide. The sweep is quite large (about 15 GHz) because we are trying to determine how effective our device is within the scope of the entire Ka-band. I have simulated the same structure with small geometry deviations many times before and when HFSS is solving for frequencies, it has always done it by solving 4 frequencies in parallel.
  Until about 3 days ago, HFSS is only solving 1 frequecy in parallel, thus quadrupuling my simulation time. I have no other programs or applications open on my machine, the machine has 64 GB or RAM, I set the simulation priority to "highest," and I have restarted my machine numerous times. As I mentioned, I have simulated numerous, almost identical, devices in the past, all of which have always been solved with 4 freuencies in parallel.
  I am on a very tight deadline for my research and I cannot figure out why this may be happening. Any suggestions would be greatly appreciated!
- July 12, 2022 at 2:18 pm
  
  Praneeth
  Ansys Employee
  
  Hi kuhnk,
  Did you disable HPC (High Performance Computing) by any chance?
  To run more than one frequency point in the sweep, you should have enabled it.
  In simple words, the tool allows you to run more than one frequency point at a time during the frequency sweep.
  You need to set the cores of your manchine and maximum RAM usage per core in percantage.
  More information can be found here - Ansys Electronics 2022 R1 - Working with Ansys Electronics Desktop Projects.
  Best regards from the Ansys team,
  Praneeth.

Viewing 1 reply thread

You must be logged in to reply to this topic.

Ansys Innovation Space

Boost Ansys Fluent Simulations with AWS

Computational Fluid Dynamics (CFD) helps engineers design products in which the flow of fluid components is a significant challenge. These different use cases often require large complex models to solve on a traditional workstation. Click here to join this event to learn how to leverage Ansys Fluids on the cloud, thanks to Ansys Gateway powered by AWS.

Earth Rescue – An Ansys Online Series

The climate crisis is here. But so is the human ingenuity to fight it. Earth Rescue reveals what visionary companies are doing today to engineer radical new ideas in the fight against climate change. Click here to watch the first episode.

Ansys Blog

Subscribe to the Ansys Blog to get great new content about the power of simulation delivered right to your email on a weekly basis. With content from Ansys experts, partners and customers you will learn about product development advances, thought leadership and trends and tips to better use Ansys tools. Sign up here.

Trending discussions