[Coin-symphony] performance

[Ted Ralphs]

Martin,

Can you send me the MPS file?

Ted

Martin Mundschenk wrote:
> Hi!
> 
> I'm testing the performance of a couple of mip-solvers. I use a mps file 
> I generated and processed it with cplex, lp_sove, glpsol and symphony. I 
> get a 4% solution gap in cplex after about 20 minutes. Glpsol achieves a 
> 11% gap after about 1 hour and lp_solve doesn't get better than 42%. 
> Symphomy though, doesn't even get an upper bound on the same problem, 
> using the same machine, but with *all* four cpus (Xeon 3,2 GHz) after 
> eight hours. I can not beleive that symphony performs that bad. How can 
> I speed up symphony? I tested all solvers with default settings.
> 
> Martin
> 
> 
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-- 
Dr. Ted Ralphs
Associate Professor
Industrial and Systems Engineering
Lehigh University
(610)758-4784
tkralphs at lehigh.edu
www.lehigh.edu/~tkr2