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Open daveTheWizzard opened this issue 4 years ago • 3 comments

The goal is to apply a Dantzig-Wolfe decomposition to a model given as a .mps file where the decomposition structure is given in a .dec file. The motivation is that this would allow for an easy comparison of Coluna with other solvers.

daveTheWizzard avatar Jul 08 '21 18:07 daveTheWizzard

There is some problem only when solving certain problems such as the one in read_decomposition_demos/bin_packing which I could not wrap my head around. The error message is ERROR: LoadError: MathOptInterface.UnsupportedAttribute{BlockDecomposition.ConstraintDecomposition}: Attribute BlockDecomposition.ConstraintDecomposition() is not supported by the model.

Edit: This error was fixed with atoptima/Coluna.jl@fd5bead996fa440ee3ac2480ac6d8c790da73274.

daveTheWizzard avatar Jul 08 '21 18:07 daveTheWizzard

Hi David,

I'm sorry, I didn't see your PR ! Would you like to have a call to talk about what you did in this PR and in #31 ?

guimarqu avatar Jul 20 '21 09:07 guimarqu

Hi David,

I'm sorry, I didn't see your PR ! Would you like to have a call to talk about what you did in this PR and in #31 ?

Yes, that's a good idea!

daveTheWizzard avatar Jul 20 '21 20:07 daveTheWizzard