[Couenne] how to setup acceptable gap limit

[Ashutosh Mahajan]

On Fri, 13 Nov 2009, Pietro Belotti wrote:

> Hi Ashu,
> 
> I believe the two options allowable_gap and allowable_fraction_gap are  
> what you are looking for. With the option
> 
> allowable_gap 2.58
> 
> Couenne stops as soon as |lower-upper| < 2.58, while the option
> 
> allowable_fraction_gap 0.05
> 
> makes Couenne stop as soon as the relative gap falls below 5% (I guess  
> they are equivalent to absmipgap and relmipgap in Cplex, respectively).
> 
> Hope this helps.

Thanks Pietro, both options work perfectly well. They however dont appear in
the output when i do couenne -=. I see bonmin.allowable_gap and
bonmin.allowable_fraction_gap in the output and they also seem to have the
same effect. Im using stable-0.2.

--
regards
Ashutosh Mahajan
http://coral.ie.lehigh.edu/~asm4