Sonja Mars
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Articles
Recent activity by Sonja Mars-
New Documentation Site
We are happy to announce that our documentation has been moved to a new page. The page is located at docs.gurobi.com and includes our: Getting Started Pages Example Tour Reference Manual AMPL-Guro...
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How do I resolve "ImportError: DLL load failed while importing gurobipy"?
This is only for Gurobi 9.0.1.Setup:Windows, Python 3.8.1 from http://www.python.org Situation:after running python setup.py install, importing gurobipy fails with this error from .gurobipy import ...
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Communication failed
While running grbgetkey to retrieve a license file, you might receive the error:Communication failed, check your network connection or set variable HTTPS_PROXY if you need a proxyIf your computer i...
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How does IDLETIMEOUT work?
The idle timeout allows you to set a limit on how long a Compute Server or Cloud job can sit idle before the server kills the job. Background Both Gurobi Compute Server and the Instant Cloud are ba...
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Gurobi release and support history
Gurobi versions are of the form X.Y.Z, where X is the major release, Y is the minor release, and Z is the technical release. Starting with major release 10, Gurobi product releases are supported...
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Cluster Manager error: "Unauthorized access"
When using the Gurobi Cluster Manager, you might receive the error "Unauthorized access". This error indicates that there is a problem with the method of authentication used to connect to the Clust...
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What is the difference between user cuts and lazy constraints?
User cuts and lazy constraints are similar but have some important differences. User cuts help tighten the relaxation of a MIP by removing fractional solutions. They are not required for the mode...
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How do I resolve an "Academic Domain Error"?
While requesting a Named-User Academic license or a WLS Academic license, you may receive the following error: Academic Domain Error Your network address is not recognized as belonging to an academ...
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ERROR 405: Cannot reinstall license
If grbgetkey produces a message that looks like this:info : grbgetkey version 11.0.3, build v11.0.3rc0 info : Contacting Gurobi license server... error : ERROR 405: Cannot reinstall license 99999...
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grbgetkey: command not found
The grbgetkey executable is located within the full Gurobi installation. If you receive the error "command not found" or "'grbgetkey' is not recognized as an internal or external command, operable ...