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  3. I am running a case in CFX and it was going well, but suddenly the solver failed with the following error: ERROR #001100279 has occurred in subroutine ErrAction. Memory error in ILURES. Please increase the value of the expert parameter ‘ilures memory factor’ (default value is 1.0) and try again. What does this mean? I can’t find where this adjustment can be made. IS this an expert parameter or something else?

I am running a case in CFX and it was going well, but suddenly the solver failed with the following error: ERROR #001100279 has occurred in subroutine ErrAction. Memory error in ILURES. Please increase the value of the expert parameter ‘ilures memory factor’ (default value is 1.0) and try again. What does this mean? I can’t find where this adjustment can be made. IS this an expert parameter or something else?

Tagged: 19.2, cfx, cfx-solver, fluid-dynamics, General - CFX, parallel
    • May 15, 2023 at 8:32 am
      SolutionSolution
      Participant

      “ilures” is a memory allocation which is used by the linear solver during the solution of the discretized algebraic equations, so it can vary from iteration to iteration. ANSYS CFX uses a Multigrid accelerated Incomplete Lower Upper (ILU) factorization technique for solving the discrete system of linearized equations. It is likely that the ILU smoother is running out of memory. This is a fairly uncommon error. The fix is to increase the ilures memory factor as stated in the error message This is an expert parameter, but unavailable from the CFX Pre GUI. The parameter can be entered by editing the Expert parameters and adding it manually – see attachments.

      Attachments:
      1. Edit_in_command_editor.png
      2. enter_parameter_and_value.png

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