BARON solution

[PPayam]

Hi

I got the message below:

 Preprocessing found feasible solution

and optimization was completed as

Cleaning up

                         *** Normal completion ***            

 Wall clock time:                   244.00
 Total CPU time used:               214.40

 Total no. of BaR iterations:       1
 Best solution found at node:      -1
 Max. no. of nodes in memory:       1
 
 All done

Does the code -1 mean a real optimum? Or I have to change the model to jump preproccessiong step

Thank you. 






 

[AMPL Google Group]

This indicates Baron can solve your problem in preprocessing step. Your solution is the best solution as indicated by return value of -1 and you don't need to jump preprocessing step.

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Paras Tiwari
am...@googlegroups.com

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[PPayam]

Thank you Paras.

I also understood if I chnaged epsa=1e-8 epsr=1e-8, this would force BARON to skip preproccessing and then find the optimal.