David Torres Sanchez

Hi Vijesh, I think you may have to update your system environment variables.See the bottom of Software Installation Guide.Cheers, David

Hi Braun,Your objective function range increases with every iteration until it gets too large to be manageable. At the last iteration, we get: Coefficient statistics:  Matrix range     [1e+00, 3e+0...

Side question: if I will ever need in future to post a similar "batch" of questions, do you prefer all of them in a single post, or one post for each question? I am happy with this format as some...

Hi Lorenzo,I'll try and answer these. They are not constant. If you look at the examples: Mip1.java it is very easy to see this use. I'm not sure these objects would be very useful otherwise. Same...

Hi Zhanwei,This is interesting, what happens if you do not provide the initial solution values?It may just take longer to process the initial solution than it is worth.I can't really say much more ...

Hi, 3. Is it should be if f[i] = 1 if ( w[i] =1 and temp == True)? It depends on what you want to model. Firstly, both \(\texttt{f}\) and \(\texttt{w}\) should be binary in order to use them in i...

Hi Ryosuke,The first article is referring to running Gurobi on different multiple machines with similar specs. Due to hardware variations, the solution process may vary. This is performance variabi...

Hi,Assuming your variables are appropriately defined, the syntax is a bit similar to AMPL.You just need to ensure that the order of the indices is correct. m.addConstrs(   (gp.quicksum(x[j, f + 1]...

We tracked down the source of this issue. In SHOT, it was a callback (GurobiCallbackMultiTree) going out of scope and deleted from memory then when performing basic operations on the model (e.g. se...

Hi Andreas, This is very interesting!Just created an internal ticket to better track this.Cheers, David