
Jaromił Najman
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Activity overview
Latest activity by Jaromił Najman-
Jaromił Najman commented,
Hi Lei, Could you please update to Gurobi version 12 and try again. If you are not able to upgrade to version 12, please try setting the FuncNonlinear parameter to 1. This will tell Gurobi to treat...
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Jaromił Najman commented,
Hi Seyedkianoush, a postponed node is a node that Gurobi was not able to solve for whatever reason. It may be that a node is unbounded when it shouldn't or some numerical trouble were encountered. ...
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Jaromił Najman commented,
Cann i also model functions such a power or a sigmoid function without using addGenConstrPWL? Which command would i use for that? With version 11 you can use the addGenConstrPow method to add po...
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Jaromił Najman commented,
Hi Dejan, Strangely enough, it doesn't work with addGenConstrExp(). How do I get it to work? Could you please elaborate what exactly does not work? Note that you have to introduce an auxiliary va...
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Jaromił Najman commented,
Hi Margi and Happy New Year, This issue is explained in the Knowledge Base article Why doesn't Gurobi support strict inequality constraints like x < a? Best regards, Jaromił
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Jaromił Najman commented,
Hi Xuan Lin, Are the techniques disabled by activating LazyConstraints inherently incompatible with lazy constraints, or is there a workaround to mitigate the slowdown? The deactivated techniques...
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Jaromił Najman commented,
Hi Graham, Is it possible to read SMPS formatted problems with Gurobi in python? Gurobi does not support SMPS files. A list of supported file formats can be found in the File Formats section of t...
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Jaromił Najman commented,
Hi Joshua, You might want to have a look at the Knowledge Base article How do I avoid an out-of-memory condition? In general, given the complexity of optimal power flow problems, you might want to ...
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Jaromił Najman commented,
Hi Xuan Lin, Activating the LazyConstraints parameter disables some presolve reductions which would interfer with lazy constraints. From the docs The parameter tells the Gurobi algorithms to avoid...
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Jaromił Najman commented,
When I was solving a non-convex nonlinear (continuous) problem, it reports "Solving non-convex MINLP". This is the default output then solving non-convex nonlinear problems. Gurobi does not intro...