Can number of cores in current and recommended settings affect simulation?

Ishaqlad89
Ishaqlad89 Altair Community Member
edited December 2023 in Community Q&A

I am simulating an axial coreless motor with a maximum number of cores as 4 and a linear solver as PETSc in the current setting. However, in a recommended setting, 12 number of cores with a PETSc linear solver are required.

How can I address this, it keeps poping distributed solver can't be solved

 

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Answers

  • SimonGuicheteau
    SimonGuicheteau
    Altair Employee
    edited December 2023

    Hello,

     

    this recommendation is based on the size of the model. It knows how many unknowns it needs to solve and then based on our Performance team experience, it tries to recommend the optimal number of cores to solve such model. The largest is not always the better. In you case, you have 4 cores on the machine so you cant solve with more than that I'm afraid.

     

    Regarding the distribution, this means solving independant parametric steps using multiple cores at the same time. Here it seems you are only solving a transient magnetic so we cant solve the multiple steps separately in this case.

     

    Best regards

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