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Re: [Help-glpk] GLPSOL for Windows & docs in PDF

From: Vasily Zatsepin
Subject: Re: [Help-glpk] GLPSOL for Windows & docs in PDF
Date: Tue, 18 Nov 2008 23:33:29 +0300

On Tue, 18 Nov 2008 17:13:10 +0300, Andrew Makhorin wrote:


> The benchmarks above are still hard for glpk :(

> Note also that by default the glpk mip solver does not use cutting
> planes that may be inappropriate in many cases. The situation is the
> same as for p0548. Old versions of the glpk mip solver based on the
> branch-and-bound could not find even an integer feasible solution
> for an hour while glpk 4.34 using the pseudo-cost branching and mir
> cuts solves it to optimality for 3 seconds.

May be it's worth now to put an additional column in bench2.txt
with label like 'used/optimal option set'?

Best regards
- --
Vasily Zatsepin           |        mailto: address@hidden
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