Re: [Help-glpk] Solving a large LP problem

[Samik Raychaudhuri]

Hi Andrew,
I am working on trying to find the point where glpsol crashes. I'll 
update you once I am able to come up with something.
Many thanks.
-Samik

On 7/13/2004 1:43 PM, Andrew Makhorin wrote:

> > The last one I solved successfully had 1453 rows and 3200 cols before
> > presolve in a MPS file. glpsol solved it like a snap.
> >    
>
> Do you mean that glpsol failed on other lp instances of moderate size
> (say, 2000 rows and 4000 cols)?
>
>  
>
> > I also have compiled the package from scratch with the latest source 
> > code on an AIX box using gcc 3.3.3.
> > Any other thing you want me to check?
> >    
>
> Glpsol successfully solved big lp instances like yours (and even
> bigger), so I think it is some stupid bug. Ideally I need to know a
> point in glpsol.c where it crashes. You also can try `--nopresol'
> option.
>
> How big your mps file if it is gzipped? Can you make it available for
> downloading via ftp?
>
> Andrew Makhorin
>
>
>