Article overview

  • Dealing with Models that are Unbounded

    Tips McCarl Newsletter

    Optimization problems occasionally yield unbounded solutions. To find the cause one can modify the model and solve it to gain information. This is done through the imposition of “artificially” large bounds. Linear programming solvers discover unboundedness when they find a variable which is attractive to make larger, but find that the variable may be increased without limit.

  • An open source TIMES/MIRO app - introducing MIRO 1.1.0

    MIRO Features Conference Report

    TIMES is a sophisticated energy model generator implemented in GAMS. It has been published under an open source license in 2019. Recently, GAMS joined forces with experienced TIMES users to develop an open-source TIMES/MIRO App that serves as a frontend to the TIMES model. This was made possible by new features in GAMS MIRO 1.1

  • New and improved GAMS links for Pyomo and JuMP

    Features

    We’ve got some new links from Pyomo and JuMP to GAMS, which allow efficient interfacing of GAMS with your Pyomo or JuMP models.

  • GAMS MIRO 1.0 - Deploy your GAMS models in minutes!

    Roadmap Features

    We are proud to announce the release candidate for GAMS MIRO 1.0.

  • Free: Time-limited licenses for students or academic staff during the current Covid-19 crisis

    News

    With schools and universities shutting down globally due to the ongoing pandemic, some university students using GAMS in their projects have been locked out of computer labs.

  • UNSEEN - The successor of BEAM-ME

    News

    Energy system optimization modeling has become a key ingredient in transitioning to decarbonized energy supply systems based mostly on renewables. Yet, these systems reveal a growing complexity, e.g., due to the decentralization of infrastructures or an increasing variety of potential technologies capable of balancing energy demand and supply. This renders a reliable application of traditional optimization modeling techniques impossible.

  • GAMS COVID19 update

    News

    GAMS staff is working from home. We continue serving our customers.

  • Announcing MIRO 1.0rc

    Roadmap Features

    We are proud to announce the release candidate for GAMS MIRO 1.0.

  • Grid Optimization Competition Challenge I winners announced: congratulations!

    Modeling News

    Given the crucial role power distribution plays for the economy, and the challenges posed by renewable energy and increasing demand for electricity, ARPA-E is running the Grid Optimization Competition, which challenges participating teams to develop and test power system optimization and control algorithms on a range of different synthetic and real network models.

  • Good news: relaxed demo limits, and a new community license scheme

    General GAMS Update News Sales

    Some of you might have noticed that coincident with releasing GAMS 30.1, we have introduced some changes to our licensing model [https://www.gams.com/latest/docs/UG_License.html]. Below we summarize what has changed. Demo We have changed the way we allow users to test GAMS (“demo mode”). We now require registration on our website and generating a demo license before using the software.