How to Specify BONIN Options

GAMS
1

Hi All,
I’m trying to solve a nonconvex MINLP problem using BONMIN. I would
like to specify some options so I setup a BONMIN.opt file in same
directory as my other files. I have this in the .opt file:

registering category: Options for non-convex problems

bonmin.num_resolve_at_infeasibles 3
bonmin.num_resolve_at_node 5
bonmin.num_resolve_at_root 2

I also tried to put everything in a single statement like this:

option bonmin_options "bonmin.num_resolve_at_root 10 \

bonmin.num_resolve_at_node 7 bonmin.allowable_gap -1e-8
bonmin.num_resolve_at_infeasibles 5";

When I tried to read the option files into GAMS using the Utilities >>
Option Editor >> File >> Read Option File. I get the following error:
“Sorry cannot file definition file optbonmin.def”

Does anyone know what that means or how I can achieve my goal?

Thank you

\

2

Reply-to: gamsworld@googlegroups.com

Hi,

The Option Editor of the GAMS IDE in GAMS Hi All,

I’m trying to solve a nonconvex MINLP problem using BONMIN. I would
like to specify some options so I setup a BONMIN.opt file in same
directory as my other files. I have this in the .opt file:

registering category: Options for non-convex problems

bonmin.num_resolve_at_infeasibles 3
bonmin.num_resolve_at_node 5
bonmin.num_resolve_at_root 2

I also tried to put everything in a single statement like this:

option bonmin_options "bonmin.num_resolve_at_root 10 \

bonmin.num_resolve_at_node 7 bonmin.allowable_gap -1e-8
bonmin.num_resolve_at_infeasibles 5";

When I tried to read the option files into GAMS using the Utilities >>
Option Editor >> File >> Read Option File. I get the following error:
“Sorry cannot file definition file optbonmin.def”

Does anyone know what that means or how I can achieve my goal?

Thank you

–
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3

Reply-to: gamsworld@googlegroups.com

Thanks a lot. That worked.





On Thursday, August 30, 2012 12:50:13 PM UTC-7, Stefan Vigerske wrote:

Hi,

The Option Editor of the GAMS IDE in GAMS Hi All,

I’m trying to solve a nonconvex MINLP problem using BONMIN. I would
like to specify some options so I setup a BONMIN.opt file in same
directory as my other files. I have this in the .opt file:

registering category: Options for non-convex problems

bonmin.num_resolve_at_infeasibles 3
bonmin.num_resolve_at_node 5
bonmin.num_resolve_at_root 2

I also tried to put everything in a single statement like this:

option bonmin_options "bonmin.num_resolve_at_root 10 \

bonmin.num_resolve_at_node 7 bonmin.allowable_gap -1e-8
bonmin.num_resolve_at_infeasibles 5";

When I tried to read the option files into GAMS using the Utilities >>
Option Editor >> File >> Read Option File. I get the following error:
“Sorry cannot file definition file optbonmin.def”

Does anyone know what that means or how I can achieve my goal?

Thank you

–
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