AMPL Installation Wizard#

Here are instructions to install AMPL-Gurobi on macOS:

  1. Extract the contents of the supplied AMPL-Gurobi file. Extraction is done with the following command:

    tar xvfz amplgurobi11.0.1_mac64.tar.gz

    The file name should be adjusted to reflect the actual archive file. Extraction will produce a subdirectory called ampl, which contains the AMPL-Gurobi software.

  2. Choose a destination directory. We recommend /usr/local/bin, but other directories will work as well. Copy the extracted files inside the ampl subdirectory to the destination directory.

  3. To allow the AMPL-Gurobi executable files to be found when needed, ensure that the PATH environment variable includes the AMPL installation directory. Assuming that AMPL is installed in /usr/local/bin, users of the bash shell would add the following to their .bashrc files:

    export PATH="${PATH}:/usr/local/bin"
export LD_LIBRARY_PATH="${LD_LIBRARY_PATH}:/usr/local/bin"

    And users of the csh shell would add the following to their .cshrc files:

    setenv PATH ${PATH}:/usr/local/bin
setenv LD_LIBRARY_PATH ${LD_LIBRARY_PATH}:/usr/local/bin

    If LD_LIBRARY_PATH is not already set, you would use the following instead:

    export LD_LIBRARY_PATH="/usr/local/bin"

    or

    setenv LD_LIBRARY_PATH /usr/local/bin

    Note that you do not need to update LD_LIBRARY_PATH if you previously installed the standalone Gurobi Optimizer and set LD_LIBRARY_PATH during that process.

  4. You will need a license key for AMPL - even if you already have a license key for the standalone Gurobi Optimizer. To get system information needed for a license key, open a terminal prompt and type the command:

    fingerprint -o fp.out

    This will generate a fingerprint file named fp.out. To request your license key (after we have received your payment or a Gurobi sales representative has approved your request to evaluate AMPL), email the fp.out file to license@gurobi.com.

  5. When you receive your license key, simply copy the license key file to the installation directory or any other directory in your PATH.

  6. If you are configuring a floating license server for AMPL-Gurobi, please follow the additional instructions for ampl_lic.