How to find out the default solvers used?

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Sara Amr

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Apr 28, 2016, 11:25:26 AM4/28/16
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Hi,

i'm solving two models, one MIP and another that is an NLP.
how can i find out what are the default solvers that are used by GAMS to solve the models?

Thanks,
Sara 

Savitsky Andre

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Apr 28, 2016, 12:12:25 PM4/28/16
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 Dear Sara!
 
In GAMS IDE 
 
Left upper corner -> "file"
inside "option"
inside "solver"
 
Make Your choice!
 
All the best! Andre
 
 
28.04.2016, 18:25, "Sara Amr" <sara...@gmail.com>:
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With kindly regards!
Andre Savitsky
 

Renger van Nieuwkoop

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Apr 28, 2016, 12:17:55 PM4/28/16
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Hi Sara

 

-          You can see in the GAMSIDE what the available solvers are: File – Options – Solver. Those with a dot are available (those with – not). You can set the default solver for a specific problem (e.g. NLP) by clicking on the dot in the line with your solver of preference.  I suppose GAMS just takes the first solver in the line.

-          You can run gamsinst.exe (even if GAMS is already installed) from your GAMS directory and it will show the solvers it chooses as default.

-          If you don’t explicitly choose one either in the GAMSIDE or using gamsinst.exe, and you want to solve your model with a non-default solver you can use an option in your model file specifying the solver. (e.g. Option nlp = PATHNLP;)

 

Hope this helps

Cheers

Renger

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