Re: [Help-glpk] glpk 4.9 release information

[Oscar Gustafsson]

Thank you for your answer,

On Thu, 19 Jan 2006, Andrew Makhorin wrote:
> This feature will be implemented in a next release.
Sounds great!

> The lower bound obtained from a relaxation is only a bound. Its value
> may depend, for example, on transformations performed by presolver or
> on cutting planes added to the relaxation. So it does not express any
> essential information.
I agree with you, but when using cplex I use it as an indication of the 
progress of the solver. If the lower bound only changes in, say, the 12th 
digit it is quite likely that the solver will run out of memory before the 
optimal solution is found. So if it would be possible to optionally print 
it I would most likely use it for this kind of thing.

> You can use the C preprocessor (gcc -E) to prepare data files.
At the moment I do like cat *.dat > merged.dat, but often I forget to 
update the merged file when changing one data file.

Regards

Oscar Gustafsson