Lorenzo Moreschini

Let M be the integer programming model I need to implement using Gurobi and let C be a family of cuts I am willing to add dynamically during the resolution.Also, the model M contains an exponential...

Reading the Callback Codes documentation, I noticed that when `where == MIPNODE` the MIPNODE_PHASE infomation is available, which is described as follows: Current phase in the MIP solution process...

Is there any kind of data available about the performance penalties incurred when running Gurobi on a virtual machine with a type 1 hypervisor? Whatever the kind of virtualization, I suppose there ...

I am running Gurobi 10.03 using the Java API (openjdk 21) to solve a MIP model with 57662 variables and 76414 constraints on a machine with Debian 6.1 and 16 CPUs. As you can see from the attached...

I am experimenting an unexpected behaviour of the callback value MIP_SOLCNT, which should print the number of feasible solutions found so far (I am solving a MIP problem).As you can see from the lo...

I am using the Java API and I am having some troubles with the GRBCallback method double[][] getSolution(GRBVar[][] xvars) documented here https://www.gurobi.com/documentation/9.5/refman/java_cb_ge...

I am writing a program than solves many MIP models simultaneously, equally distributing the number of available threads (virtual cores) among all models. When a model completes its threads are reas...

Hi, I have a few questions about Gurobi 9.5 API. I mainly use the Java API, so I will use its syntax in my questions (but sometimes I also use the Python API, so please specify which answers are sp...

Is it possible to add/remove variables and/or constraints to a model while optimisation is running? If so, is the body of a callback function the right place to do this? Instead, if this is not pos...

I have built a model with integer variables in Python. If at some point I need the relaxed version of the model and I know that I no longer need the original one, can I (or should I) call dispose()...