Eli Towle
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Articles
Recent activity by Eli Towle-
How do I write an MPS model file from a third-party API?
Be careful when using a third-party API to write a model fileMany users call the Gurobi solver through third-party APIs like JuMP.jl, CVXPY, or Pyomo. Such tools may not provide a way to write an M...
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How do I create a new Cluster Manager API key?
Gurobi highly recommends using an API key to authenticate with a Cluster Manager.To create a new Cluster Manager API key, navigate to the Cluster Manager web interface (for example: http://mymanage...
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How do I enable type hinting in the Gurobi Python API?
Starting with Gurobi 9.5, type hinting is available for most classes and functions in the gurobipy package.Gurobi version 11+For Gurobi versions 11.0 and later, type hints are included in the gurob...
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How do I configure an AWS EC2 instance so the license file remains valid?
A Gurobi license file set up on an AWS EC2 instance will remain valid if the EC2 instance is stopped and restarted. However, a Gurobi license file may become invalid after the EC2 instance is termi...
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How do I check the availability of floating license tokens?
In floating license environments, it is possible that all of the tokens are in use. When this happens, no other applications will be able to use Gurobi to solve optimization problems until a token ...
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How do I resolve the error "grbgetkey: command not found" or "'grbgetkey' is not recognized"?
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 ...
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Resolved in Gurobi v10.0.1: Incorrect objective value reported for some multi-objective problems
Affected versions: Gurobi v10.0.0Resolved in version: Gurobi v10.0.1 Issue Gurobi 10.0.0 includes a bug that can result in Gurobi printing an incorrect optimal objective value for multi-objective o...
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How do I suppress all console output from Gurobi?
Despite setting the OutputFlag or LogToConsole parameters to 0, Gurobi may still print license and/or compute server information to the standard output: Compute Server job ID: 11a531ac-9fd9-453d-9c...
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Why does Gurobi report that my convex model is non-convex?
Introduction Gurobi allows you to formulate non-linear optimization models. If these models adhere to certain properties, they are called convex. This is an important property to know about when so...
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How do I resolve the 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...