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Switching from Iterative to Direct solver

    • rob_stu

      I am trying to simulate large structure of inductor (Frequency sweep) in ANSYS Electronics Desktop 2020 R2 in HFSS Design using Iterative Solver but I keep getting this message:

      "Matrix solver warning: a single level system, switch from iterative solver to direct solver",

      what results in error message about insufficient RAM space. I assume that using iterative solver should work but i was not able to get around Direct Solver. Is there any solution to disable Direct Solver in this case or anyhow solve this issue?

      Thanks in advance.

    • Chinmay T
      Ansys Employee

      Please run the simulation with coarse/small mesh settings and check whether your simulation converged or not.
      If the above solution does not work then maybe the memory size on your system is not sufficient to solve the model and you need to increase the memory size.
      Thanks Chinmay

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