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How to enable AOCL in HFSS v242?

- February 9, 2026 at 8:04 pm
  
  hsjeong2003
  Subscriber
  
  Hi,
  I’m using Ansys Electronics Desktop 2024 R2 v242 and I’m trying to use AMD AOCL with HFSS.
  Using the same AEDT installer/version, AOCL loads correctly on my Ryzen laptop, but on my Ryzen desktop the HFSS solver always loads Intel MKL only.
  Laptop (Ryzen 7000-series): AOCL DLLs are loaded during solve (confirmed in the loaded modules).
  Desktop (Ryzen 9000-series): AOCL DLLs exist on disk but are never loaded.
  Is MKL forced by design in v242 on some systems even if AOCL DLLs are present?
- February 10, 2026 at 4:58 am
  
  Takeshi Itadani
  Ansys Employee
  
  The AOCL supported by HFSS is 4.1.1, but what is the AOCL of the Desktop version that you say cannot be recognized?
  - February 11, 2026 at 10:52 am
    
    hsjeong2003
    Subscriber
    
    To clarify, my issue was that when solving in HFSS on an AMD Ryzen 9000-series CPU, the solver was using the Intel MKL modules instead of the AOCL modules (i.e., AOCL was not being loaded/recognized during the solve).
    After upgrading AEDT/HFSS to 2025 R2, the issue was resolved and AOCL is now loaded correctly. This suggests that in AEDT/HFSS 2024 R2, AOCL may not be properly loaded on Ryzen 9000-series CPUs on my desktop system.

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