
Silke Horn
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Gurobi Staff
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Articles
Recent activity by Silke Horn-
What does "Model contains large matrix coefficient range" mean?
The coefficient statistics are some of the first pieces of information you will encounter in the Gurobi log. These provide an overview of the ranges of the absolute values of the numeric values in ...
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How does Gurobi count cores?
For licensing purposes, Gurobi always aims to count physical cores. To do this, the operating system is queried for the number of physical and logical cores.Gurobi license files always contain the ...
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How do I scale my model to improve its numerical properties?
Scaling can have a huge impact on the model's numerical properties, which can, in turn, affect both solution time and quality. Gurobi does some scaling automatically (which can be controlled via th...
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How do I request additional free Academic Named-User licenses?
There is no limit on the number of free Academic Named-User licenses an academic user can request. To request additional individual academic licenses, please follow the instructions in How do I obt...
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What does GURO_PAR_NOLOCALDISK mean?
You may have observed this parameter in the tuner output from a compute server or with distributed tuning. GURO_PAR_NOLOCALDISK is a hidden parameter that contains information about whether you hav...
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How do I send the log to a file without also printing to the console?
To send the log to a file only, set the LogToConsole parameter to 0 and keep the OutputFlag parameter at its default value of 1. Further information How do I instruct Gurobi to produce a log file?...
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Should I add distributed workers to my Instant Cloud pool?
In the pool settings, you can set the number of Compute Servers and the Number of distributed workers per server for your pool. Note that on Instant Cloud, when enabled, each compute server has its...
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How do I get started with setting up a Compute Server on Azure?
Disclaimer: This guide describes the basic setup of Compute Server on Azure. There are a lot of extra features (for example concerning security and availability) that may have to be added to fit yo...
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How do I get started with setting up a Compute Server on AWS?
Disclaimer: This guide describes the basic setup of Compute Server on AWS. There are a lot of extra features (for example concerning security or availability) that may have to be added to fit your ...
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KeyError: 'Missing constraint index'
The error message "KeyError: 'Missing constraint index'" appears when you try to add a single constraint using the method Model.addConstrs(). This is used for adding multiple constraints to a model...