[Cbc] CBC 2.9 vs. 2.8, presolving

[Christoph Cullmann]

Hi,

thanks a lot ;=)

Synced again with cbc 2.9, will try out the change on my other regression tests ;)

Greetings
Christoph

----- Ursprüngliche Mail -----
> Christoph,
> 
> Happens with 2.8.12 (for me).  It is a bad dual solve.  Problem goes
> away if anything changed e.g. scaling used.
> 
> I have added some code to switch back to primal if things look as if
> they are going very badly.
> 
> John
> On 02/02/15 08:14, Christoph Cullmann wrote:
> > Hi,
> >
> > using the example:
> >
> > http://www.absint.com/dla/lpsolve/value_9041131.lp.gz
> >
> > and a solver like below that mail, now the presolving no longer
> > terminates in any reasonable time (e.g. > 20 minutes here instead of
> > seconds with CBC 2.8).
> >
> > Is this a regression or just some API misuse?
> >
> > Greetings
> > Christoph
> >
> >
> 
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> 

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