Riley Clement

Hi,CPLEX offers the following https://www.ibm.com/docs/en/icos/22.2.0?topic=c-cpxxcutcallbackaddlocal-cpxcutcallbackaddlocal which allows one to add a local cutThank you for letting me know, I was ...

Hi,When a callback is executed, all other threads cease, so we won't have multiple callbacks being executed in parallel.  This is what it means when it says “the user callback is only ever called f...

A separate submission of the identical model, inputsThis statement is not compatible with the fact the coefficient statistics reported in the two logs are different.

Hi Haiyi,Please see the following article: https://support.gurobi.com/hc/en-us/articles/33982552193937-As-a-student-at-a-university-in-China-how-do-I-request-a-Free-Academic-LicenseBest of luck wit...

Hi 玉鑫 张 ,This can be normal, it all depends on the model.Firstly though, I think you are setting way too many parameters.  When we make parameter recommendations for customers, based on their model...

Hi Haonan,When Gurobi finds a solution it will call your callback method using a “MIPSOL” argument for the where parameter, which gives you a chance to cut the solution off with a lazy constraint. ...

Hi Greg,I created a ticket to keep you updated.- Riley

Hi Greg!I'll ping the dev team.- Riley

Hi Haonan,Yes, feasible solutions can be found during presolve as we have some simple heuristics which run in parallel threads during presolve.- Riley

Hi Paula,The log shows 33 variables added to disaggregate expressions. Is Gurobi decomposing the degree-4 product into a chain of bilinear constraints during presolve, e.g.:   t1 = w_i · (Cbar_i - ...