Learning Forum

[Le_Potate]

Hello,

I'm having an issue with HFSS only using half of the available CPU core during a solve. System:

AMD 9684X - 96 Core, SMT - Off, NPS - 4.

12x128gb DDR5 4800mhz

4x 2tb PCIe 5.0 NVMe in RAID 0 for temp directory

500+ available Workgoup licenses

Ansys 2024R2

Windows Server 2022

The system is set to use 96 cores, but during adaptive meshing and frequency sweep only 48 cores are used. If I set 192 cores under HPC options, all 96 cores are used. It's as if HFSS doesn't recognize that SMT is off. I'm not an expert Ansys user, simply the one who deployed the system, so any advice would be greatly appreciated. Thanks!

[Aymen Mzoughi]

Set the HPC option to "Auto" and let HFSS automatically choose the adequate ressources for the given simulation

[Le_Potate]

Is there any more detail you could give one this? This behavior happens with automatic settings applied. It seems like HFSS would use more than half of the cpu if its available?