Riley Clement

The No Relaxation heuristic (NoRel) is a proprietary heuristic developed by Gurobi. It is primarily intended for use with integer programming models where the root LP is challenging to solve. Such ...

Reductions are the names given to the different techniques used to transform a model during presolve (see How does presolve work?).  Reductions which are solely based on reasoning applied to the fe...

Gurobi relies on a pseudorandom number generator (PNRG) to allow for behavior which is both random and deterministic.A PRNG is an algorithm designed to produce a sequence of numbers that approximat...

You can install Gurobi Optimizer for Python in three different ways: Using pip Using conda Offline installation The installation, when using any of these methods, will be separate from any existing...

What is a Minimal Reproducible Example (MRE)? A MRE is a code example that: is as small as possible contains all data, variables, functions etc needed to reproduce the problem (but nothing more) ...

As described in How do I upload or send files to Gurobi?, it is possible to anonymize an MPS file by using the REW format, in which default names are given to variables and constraints. The REW for...

Your computer does not need an internet connection to install Gurobi nor to set up a license file. Once you have downloaded the Gurobi installation package from our website to a computer with inter...

There are many things that we may wish to make comparisons between, including: alternate formulations potential parameter settings different machines and hardware competing solvers (including diffe...

The Java package for Gurobi can be obtained through our website as part of the Gurobi Optimizer.  This jar file, which can be found in the "lib" directory, i.e. <installdir>/lib, facilitates the Ja...

Imagine that you run your model with default parameters, on a solver, and it finds an optimal solution in 30 seconds.  Now imagine that you make a small change to your model, such as reordering the...