[Coin-symphony] Solution of Mixed Interger Problem from MPS

[Menal Guzelsoy]

Lutz, 

Can you also send the mps file?

Menal.

Quoting Lutz Göhring <lutz.goehring at gmx.de>:

> I have got the following problem getting a solution from an MPS file:
> The problem size is ROWS: 551 x COLUMNS:2312. 
> It is of mixed integer type. 
> I plug the problem as an MPS into the standard "plug and play" SYMPHONY5.0/
> User programm. After very short time compared to problem size (<<1 sec)  
> SYMPHONY returns the zero vector as  solution. Our group solved the same 
> problem with IBMs OSL, which returns something very different. Aditionally 
> the zero vector does not make much sense from the economocal origin of the 
> problem. 
> Can anybody help me?  Are maybe some default parameters not reasonable for 
> this problem?
> 
> Regards,
> Lutz
> -- 
> Lutz Göhring
> Lengsdorfer Hauptstr. 58
> 53127 Bonn
> ++49-228-9258930
> 
> 
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