Kostja Siefen
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Activity overview
Latest activity by Kostja Siefen-
Kostja Siefen commented,
Official comment Please take a look at our Numerical Guidelines: https://www.gurobi.com/documentation/current/refman/numerics_gurobi_guidelines.html
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Kostja Siefen commented,
Please create a self-contained, minimal working example and submit a ticket at https://support.gurobi.com. This way we can try to reproduce it on our end.
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Kostja Siefen commented,
Official comment Absolutely, you can implement this with a callback function. Here is a documentation link for Python: https://www.gurobi.com/documentation/current/refman/py_callbacks.html Within the callback, you...
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Kostja Siefen commented,
Official comment The full list of status codes is documented at https://www.gurobi.com/documentation/current/refman/optimization_status_codes.html. There is nothing wrong with writing your own dictionary to convert...
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Kostja Siefen created an article,
How do I resolve the error "No compatible runtime available for version X.X.X" ?
Gurobi Compute Server can work with multiple Gurobi releases on the client side. The server automatically selects the appropriate runtime, depending on the version of the Gurobi Optimizer library t...
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Kostja Siefen created an article,
Which R versions are supported by Gurobi?
Gurobi includes a compiled R API package that is compatible with the version of R that was current at the time of the release of that version Gurobi. Below is a list of Gurobi versions and the R ve...
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Kostja Siefen created an article,
How do I resolve the error NoClassDefFoundError?
When using the Gurobi Java API, you may see a java.lang.NoClassDefFoundError exception such as:java.lang.NoClassDefFoundError: gurobi/GRBException java.lang.NoClassDefFoundError: Could not initiali...
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Kostja Siefen created an article,
How do I resolve the error BadImageFormatException?
When using the Gurobi .NET API, you may see a Bad Image Format Exception (System.BadImageFormatException) the first time you access the Gurobi .NET assembly.The Gurobi .NET assembly (e.g. gurobiXX....
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Kostja Siefen created an article,
Why are there large or increasing MIP gap values?
Sometimes in the Gurobi log, you might see an increase in the gap. In the example below, the gap increases from 113% up to 4171%, before it decreases again. Nodes | Current Node | Objec...
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Kostja Siefen created an article,
How do I use Gurobi with PyCharm?
In a typical workflow, each PyCharm project will have an associated virtual Python environment (venv). The gurobipy package must be available to the Python interpreter of that venv. Installing guro...