AMPL Error Gurobi :Set NonConvex=2 to solve model

Answered

Rosati Alessandro

• April 23, 2023 18:49

I have this error in AMPL with gurobi solver : Error: Objective Q not PSD (negative diagonal entry). Set NonConvex=2 to solve model. 

I don't know where to insert NonConvex=2 , in file.mod or in file.run, or in file.dat?

Related to

• Nonconvex
• AMPL

0

• 

  Robert Fourer

  • April 23, 2023 21:00

  

  

  Set Gurobi's nonconvex option in your .run file.

  • If you are already setting a gurobi_options string, then add nonconvex=2 to it.
  • If you are not yet setting a gurobi_options string, then add this command before the "solve" command:

  option gurobi_options 'nonconvex=2';

   

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