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    GAMS Software

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    GAMS Software : GAMS is a high level modeling system for mathematical programming and optimization. It consists of a language compiler and a range of associated solvers.

    The GAMS modeling language allows modelers to quickly translate real world optimization problems into computer code. The gams language compiler then translates this code into a format the solvers can understand and solve. This architecture provides great flexibility, by allowing changing the solvers used without changing the model formulation.

    Modeling System) products.

    The GAMS Documentation is also available as PDF. However, note that the documentation is meant for consumption via an HTML viewer and only very limited effort has been spend in the PDF version. Further, the PDF version does not include detailed documention on the APIs or the GAMS IDE.

    Model Libraries

    From the early stages of the development of GAMS we have collected models to be used in libraries of examples. Many of these are standard textbook examples and can be used in classes on problem formulation or to illustrate points about GAMS. Others are models that have been used in policy or sector analysis and are interesting for both the methods and the data they use. These model libraries are included with all GAMS systems and are also available online.

    The following model libraries are available:

    • GAMS Model Library – includes GAMS models representing interesting and sometimes classic problems, ranged from production and shipment by firms, investment planning, cropping patterns in agriculture, operation of oil refineries and petrochemical plants, macroeconomics stabilization, applied general equilibrium, international trade in aluminum and in copper, water distribution networks, and many more.
    • GAMS Test Library – includes GAMS models developed for testing and quality control, both for the GAMS base module and the many solvers distributed with the GAMS system.
    • GAMS Data Library – includes GAMS models demonstrating various utilities to interface GAMS with other tools and applications such as spreadsheets and database interface.
    • GAMS EMP Library – includes GAMS Extended Mathematical Programming (EMP) models that illustrate and test the capabilities of GAMS/EMP.
    • GAMS API Library – includes GAMS Models used as scripts to compile and execute application programs in various programming languages interfacing to GAMS.
    • FIN Library – includes GAMS practical financial optimization models described in the book Practical Financial Optimization: Decision Making for Financial Engineers
      by Consiglio, Nielsen and Zenios,
    • NOA Library – includes GAMS nonlinear optimization applications models based on the book Nonlinear Optimization Applications Using the GAMS Technology by Neculai Andrei.
    • PSOPT Library – includes GAMS optimization models based on the book Power System Optimization Modelling in GAMS by by Alireza Soroudi.

    See Accessing Model Libraries on how to access a GAMS model from the model libraries.

    For large parts of the documentation, references to models from the model libraries are enclosed in square parenthesis (for example, [TRNSPORT]).

    Further Help

    If you have a further question which is not answered by the documentation above, you can get further help from our GAMS-FAQ which contains materials collected from various support activities or post your question to GAMS World Forum. You can also sign up to our Newsletters to get the latest information from GAMS. There is also GAMS Lessons, a YouTube Video Channel providing you with some tutorials on how to use our system.

    There are a number of contributed documentations that have been contributed by GAMS users as well as presentations, books, posters, and advertisements contributed by people working with GAMS. The McCarl GAMS User Guide are available in various formats (PDF and HTML) and can also be found in the GAMS distribution under mccarl/ subdirectory with an incremental installer (ZIP) available for download.

    You can also visit our upcoming courses and workshops or contact one of solution specialists who have wide experience in GAMS modeling.

    If you experience a problem using GAMS please contact our Technical Support. If you have a confidential model that you cannot share as is, please read the information on conversion of models before submitting your models to our technical support.

    The GAMS/BASE Module

    The GAMS/BASE module includes:

     

    Download GAMS

    Please consult the release notes before downloading a system. Here are the detailed platform descriptions and installation notes. The GAMS distribution includes the documentation in electronic form.

    GAMS Documentation

     

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