WELCOME

You have successfully installed version 8.1.1 of the Gurobi Optimizer.

You'll find instructions for setting up your Gurobi license in this document, as well as a list of supported platforms, and Release Notes and guidelines for converting existing Gurobi code to run with this new version. Once you have finished browsing this document, you should refer to the Quick Start Guide, the Example Tour, the Reference Manual, or the Remote Services Reference Manual to get started using the Gurobi Optimizer.

Obtaining Your License

Gurobi Optimizer 8.1 uses the same licenses as version 8.0, so if you already have a Gurobi 8 license, there's no need to obtain a new one. If you don't already have a Gurobi 8 license, you will need to visit the Gurobi License Center. If you are a commercial user under maintenance, you should see your Gurobi 8 license under Current Gurobi Licenses. If you would like to request a free academic license, you can do so from the Free Academic License page. Once you have a license on the Gurobi web site, you will need to follow the instructions for installing a license in the Quick Start Guide.

Supported Platforms for Version 8.1.1

Platform	Operating System	Compiler	Notes
Windows 64-bit (win64)	Windows 7, Windows 10, Windows Server 2008 R2, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019	Visual Studio 2015, 2017	Use gurobi_c++md2015.lib or gurobi_c++md2017.lib (e.g.) for C++
Linux® x86-64 64-bit (linux64)	Red Hat® Enterprise Linux 6.7-6.9, 7.3-7.5 (and the corresponding CentOS distributions)	GCC 4.4/4.8
	SUSE® Enterprise Linux 11, 12, 15	GCC 4.3/4.4/4.8
	Ubuntu® 14.04, 16.04, 18.04	GCC 4.6/4.8	Use libgurobi_g++5.2.a for C++ in Ubuntu 16.04 and 18.04
macOS 64-bit (mac64)	macOS 10.11 (El Capitan), 10.12 (Sierra), 10.13 (High Sierra), 10.14 (Mojave)	Xcode 7/8	Use libgurobi_stdc++.a for -stdlib=libstdc++ in C++
AIX® 64-bit (power64)	AIX 7.1, 7.2	XL C/C++ 9	Due to limited Python support on AIX, this port does not include the Interactive Shell or the Python libraries.

Our Python® interface supports Python versions 2.7, 3.5, 3.6 and 3.7. Our MATLAB® interface supports MATLAB versions R2013a through R2018b. Our R interface supports R version 3.5.

Release Notes for Version 8.1

In addition to performance enhancements, Gurobi 8.1 adds the following new features:

Gurobi Remote Services and Instant Cloud now support Microsoft Azure®: Remote Services and Instant Cloud users can now use Microsoft Azure, in several regions.
Gurobi Instant Cloud adds faster and more powerful machines on Amazon EC2®: The new version supports c5, r5 and z1 instance types.
New Q matrix linearization for MIQP and MIQCP models: We added a new Q matrix linearization approach in presolve. This new option can be chosen by setting parameter PreQLinearize to the new value of 2.
Improved Mac Installation Package: Users no longer need to install Xcode to perform the installation.
Support for Python 3.7: We have added support for Python 3.7 on Windows, Linux and Mac platforms.
A callback function for multi-objective optimization: We now let users terminate optimization for individual objectives for multi-objective MIP models.

Code Conversion from Version 8.0

Programs that were originally written for version 8.0 of the Gurobi Optimizer generally won't require any code changes to use version 8.1. If you'd like to use the new features, some code changes are required.

License Agreement

Note that this software is covered by the Gurobi End User License Agreement. By completing the Gurobi installation process and using the software, you are accepting the terms of this agreement.

Thank you for using Gurobi products!