Re: [Help-glpk] Problem size limit?

[orlan]

  Thanks for the response on the size limits, and for the example MOD file as 
well.  I'm going to dig into your MOD file, Nigel, and see if I can glean any 
tricks for my own task.

  My LP problem is one with approximately 400K columns and 400K rows--of which, 
the matrix data is almost completely sparse.  Based upon your information 
Andrew, this is well within the limits of GLPK (assuming adequate hardware is 
available).  The concept of having to setup this many columns and rows, 
including bounds, etc. is not particularly exciting, however.  Is there an easy 
way to load these column/row definitions without a model file?  Something like 
the matrix load function might be useful if I could load it directly without a 
parse.

Thank you,
Orlan Franks

> ----- Original Message -----
> From: "Andrew Makhorin" <address@hidden>
> To: "Nigel Galloway" <address@hidden>
> Subject: Re: [Help-glpk] Problem size limit?
> Date: Wed, 19 Mar 2008 19:20:19 +0300
> 
> 
> > Benchmark.mod may be included in glpk's examples if you think that
> > challenging glpk is interesting.
> 
> I have added your model to glpk examples changing its name to huge.mod.