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Re: [Help-glpk] about glpk

From: Andrew Makhorin
Subject: Re: [Help-glpk] about glpk
Date: Tue, 24 Apr 2007 20:06:46 +0400

>   I just started using glpk in our lab. I have 2 questions regarding
> this toolkit:

> 1) Do you know the runtime of glpl vs cplex (in non-integer mode)

See some benchmarks bench.txt and bench1.txt in subdirectory 'doc' in
the glpk distribution.

> 2) Does GLPK have an incremental capability -- runtime on a modified
> model where the initial model has already been solved is faster than
> starting from scratch (BTW, this is sometimes called a "warm
> start").  As far as I know, clpex has this capability.

Normally lpx_simplex performs re-optimization by default. For more
details see the glpk reference manual.

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