Dear all,

I found an explanation:https://www.gams.com/help/index.jsp?topic=%2Fgams.doc%2Fuserguides%2Fmccarl%2Fprograms_with_multiple_solve_statements.htm

But if soneone could explain to me better what does it mean to use multiple solve statements and then obtain an optimal solution would be awesome

Thanks,

Veronica

\

Veronica,

The McCarl guide describes multiple solve statements when solving different models or the the same model with different data. What you describe are mutliple solves of the same model. You should get the same result with any of the solves. Sometimes with NLP models that are not well scaled or have other problems, a repeated solve might get you somewhere with the model, but it would be better to work on the numerics/scaling/… to get the the result the very first time. This is all we can recommend without having seen the model.

Hope this helps,

Michael Bussieck - GAMSWorld Coordinator

On Sunday, January 10, 2016 at 4:29:33 AM UTC-5, lupi780@gmail.com wrote:

Dear all,

I found an explanation:https://www.gams.com/help/index.jsp?topic=%2Fgams.doc%2Fuserguides%2Fmccarl%2Fprograms_with_multiple_solve_statements.htm

But if soneone could explain to me better what does it mean to use multiple solve statements and then obtain an optimal solution would be awesome

Thanks,

Veronica

–

To unsubscribe from this group and stop receiving emails from it, send an email to gamsworld+unsubscribe@googlegroups.com.

To post to this group, send email to gamsworld@googlegroups.com.

Visit this group at https://groups.google.com/group/gamsworld.

For more options, visit https://groups.google.com/d/optout.

Dear Michael,

thank you very much for your reply.

Ok, now I got it. If I have other problems I will post the model or part of it, to let you better understand. By the way in this case I will try to work on the numerics/scaling to get the optimal solution the first time.

Bests,

Veronica

Il giorno domenica 10 gennaio 2016 16:45:47 UTC+1, Michael Bussieck ha scritto:

Veronica,

The McCarl guide describes multiple solve statements when solving different models or the the same model with different data. What you describe are mutliple solves of the same model. You should get the same result with any of the solves. Sometimes with NLP models that are not well scaled or have other problems, a repeated solve might get you somewhere with the model, but it would be better to work on the numerics/scaling/… to get the the result the very first time. This is all we can recommend without having seen the model.

Hope this helps,

Michael Bussieck - GAMSWorld Coordinator

On Sunday, January 10, 2016 at 4:29:33 AM UTC-5, lup...@gmail.com wrote:

Dear all,

I found an explanation:https://www.gams.com/help/index.jsp?topic=%2Fgams.doc%2Fuserguides%2Fmccarl%2Fprograms_with_multiple_solve_statements.htm

But if soneone could explain to me better what does it mean to use multiple solve statements and then obtain an optimal solution would be awesome

Thanks,

Veronica

–

To unsubscribe from this group and stop receiving emails from it, send an email to gamsworld+unsubscribe@googlegroups.com.

To post to this group, send email to gamsworld@googlegroups.com.

Visit this group at https://groups.google.com/group/gamsworld.

For more options, visit https://groups.google.com/d/optout.