Debug No group identified in quad search

[timellemeet]

Hey, somtimes I get a kNotSet model status and I identified now this happens when we get DualChuzC: No group identified in quad search so return error. Do you have some guidance as to handle this? Do you expect this is something in my problem formulation? Should I maybe retry with a different strategy (I do need to get duals out for column generation).

[jajhall]

This can be a consequence of models with large values.

I'm travelling, so will look at this properly later today

[jajhall]

Hey, somtimes I get a kNotSet model status and I identified now this happens when we get DualChuzC: No group identified in quad search so return error. Do you have some guidance as to handle this? Do you expect this is something in my problem formulation? Should I maybe retry with a different strategy (I do need to get duals out for column generation).

This happens when the dual values are so large that a (different!) perturbation strategy fails - because, when its small values are added to the dual values, they aren't changed.