Solving the Impossible Electromagnetic Simulation with HPC

solving impossible electromagnetic simulation

I was speaking with an ANSYS HFSS developer about a year ago when he mentioned they were starting to see customers who wanted to run 3-D full wave electromagnetic field simulations that would need more than a terabyte of computer system memory, something this developer hadn’t been able to do before.

I mentioned to the developer that ANSYS and SGI have been working together for over 15 years to bring Virtual Product Development (VPD) solutions to our joint customers and that one of our SGI® UV benchmarking systems with 512 Intel® Xeon ® cores and 4TB of shared memory could be used to run these large simulations. After additional discussions, SGI and ANSYS decided to embark on a “grand benchmark challenge.” Our goal is to help our customers in the aerospace and defense industry with problems like cosite analysis and radar cross section (RCS) analysis which seemed to be the problems driving these large system memory requirements.

There are four primary solvers that are available within ANSYS HFSS, the Finite Element Method, the Finite Element Transient Method, the HFSS Integral Equation for 3-D IE solutions, and the Physical Optics. The SGI/ANSYS benchmark challenge focused specifically on using the Finite Element Method to solve these much larger problems. Within the Finite Element Method solver, there are two methods used by HFSS, one is a mesh based distributed parallel solution and the other is matrix based.  We used the mesh based domain decomposition method in HFSS with the HPC license for our large benchmarks.

What we found was the SGI UV system was able to provide the sufficient number of domains and RAM needed to perform these analyses and as a result, we realized both faster simulations and larger simulations. In fact, Steve Rousselle, ANSYS Technical Director, told me that “in my 15 years as an ANSYS HFSS applications specialist, I never imagined that we could realize 3-D full-wave electromagnetic-field simulations of the magnitude we are seeing today using the SGI UV system.

To read the full story and review the breakthrough benchmarks that were accomplished, feel free to download the white paper, “ANSYS® HFSS and SGI® UV 2000 Takes Electromagnetic Simulation to New Heights.” Also consider viewing the on-demand recording of our webinar and learn how Qorvo, a leading provider of core technologies and RF solutions for mobile, infrastructure and aerospace/defense applications automated their  EM simulations of laminate design process corners, yielding reduction in both setup time and simulation time.