direct and iterative solver

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

Hello everyone,

 

How do I choose between direct and iterative solver?

 

I have already used card named 'solvtyp' and used 'nlparmx'. and tried options there. But while solving I always get a comment saying solver used is direct sparse matrix solver.

 

How do I choose iterative solver?

 

Regards,

Bharat

 

 

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Answers

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited November 2015

    Hi,

     

    Please have a look at reference guide for SOLVTYP . Read comments 4 & 5.

    Attached screenshot is for reference. 

     

    Regards 

    Rahul R

    <?xml version="1.0" encoding="UTF-8"?>post-36845-0-83192600-1446440744_thumb.j

  • hiranwale_bharat
    hiranwale_bharat Altair Community Member
    edited November 2015

    Hello Rahul,

    thanks for the reply.

     

    i have already used all options in solvtype. But whenever I run any analysis I always get the message saying sparse direct solver selected.

     

    Can you share your comments on that?

     

    Regards,

    Bharat

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited November 2015

    Bharat,

     

    Please check if you model has any of the below mentioned if you have linear static subcase with optimization

    <?xml version="1.0" encoding="UTF-8"?>post-7616-0-31126500-1446522144_thumb.jp

  • hiranwale_bharat
    hiranwale_bharat Altair Community Member
    edited November 2015

     

    Bharat,

     

    Please check if you model has any of the below mentioned if you have linear static subcase with optimization

    Attached Thumbnails

    Hello Prakash,

     

    I am not performing optimization but only analysis.

     

    Thanks and Regards,

    Bharat

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