Haroldo Gambini Santos
Haroldo Gambini Santos
CBC does not reports zero as objective function in your screenshot. Seems like a pulp issue. Em sex, 9 de ago de 2019 05:25, rantaoran escreveu: > hi, > I...
Hi, Yes, we are aware of some instabilities on windows. I don't think that there is one active Cbc developer working on windows currently, so I don't have any hope...
I'll check it. There were some non thread safe routines in CBC, maybe this is related.
Hi @spoorendonk , CbcMain0 and CbcMain1 are the recommended way of calling Cbc. In these two methods the parameters are well tuned by @jjhforrest . The C interface uses them...
Some additional code in the C interface will probably always be necessary: some customizations in CBC involve creating specialized classes (e.g. cut generators), in C everything should be available in...
Another important thing that I remembered. When I was using directly the OsiClpSolverInterface, adding variables/constraints one by one was terribly slow. I implemented a buffer in the C interface that...
Tested in trunk, it is solved with pre-processing and no variables remain, so mipstart doesn't have additional work to do... elcome to the CBC MILP Solver Version: Trunk (unstable) Build...
Hi, > > Looking more closely at the run log, I am concerned that Clique > strengthening might be the culprit. If it strengthens the model then > the input...
Could you provide the larger instance ? In the MPS available the pre-processing removes all rows and columns so there is nothing to do.