my simulation is slow

oussama1
oussama1 Altair Community Member
edited October 2020 in Community Q&A

please check the attached image.

when i started the simulation, the simulation is remained at that process of a long time. what is the problem?

<?xml version="1.0" encoding="UTF-8"?>stop.PNG

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Answers

  • Mel
    Mel Altair Community Member
    edited April 2020

    That looks like an out-of-core solution which uses the hard drive as 'memory'. This can be very slow.

    You will need to use a machine with 200 GByte RAM or more, or reduce the number of mesh elements of the model, or consider a different solver.

  • oussama1
    oussama1 Altair Community Member
    edited April 2020

    thank you so much for you answer, please can you guide me how to use a different solver and which solver is appropriate. 

     

  • Mel
    Mel Altair Community Member
    edited April 2020

    Please share some details about what you are trying to solve.

  • oussama1
    oussama1 Altair Community Member
    edited April 2020

    the simplified model in the attachment. i would like to calculate the s parameters of this cable. please can you help me, i need to know if the s-parameters extraction is correct or not. i have reduced the meshing and the simulation was faster, however it was wrong as compared to the measurement data. any suggestions about the s-parameters extraction? any help would be appreciated.  thank you in advance.

     

    Unable to find an attachment - read this blog

  • Mel
    Mel Altair Community Member
    edited April 2020

    If you request S-parameters, Feko will automatically load each port with 50 Ohm (or a different value if the user specifies it).

    You have added 50 Ohm loads manually - effectively you are calculating S-parameters in a 100 Ohm system.

  • oussama1
    oussama1 Altair Community Member
    edited April 2020

    thank you so much for your answer.

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