Adrian Lipow
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Activity overview
Latest activity by Adrian Lipow-
Adrian Lipow commented,
Hi David, thanks for looking into this, good to hear that it will hopefully be fixed. More out of interest than practical necessity at this point: did you query the two solutions from the same run,...
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Adrian Lipow created a post,
IntegralityFocus affects solution of non-convex, continuous models
AnsweredHi, when solving a continuous, non-convex model with Gurobi, I noticed that setting the IntegralityFocus parameter to 1 affects the returned solution (the parameter was set due to the calling conte...
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Adrian Lipow commented,
Ok, thanks for the help.
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Adrian Lipow created a post,
MIP bound is greater than reported incumbent solution and reported solution is suboptimal
AnsweredHi, when solving a MIP using ConcurrentMIP (as well as some other non-default parameter settings, see linked log-file), Gurobi reports multiple weird things: The reported bound is greater than the...
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Adrian Lipow commented,
Eli, The Gurobi version is 9.5.0, I unfortunately have no control over software updates at my institution, so switching to 9.5.2 on that machine isn't easily done. Here is the log: Gurobi 9.5.0 (wi...
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Adrian Lipow created a post,
Number of Threads affects MIP solution
AnsweredHi, I am solving a MIP using Gurobi 9.5. There seems to be an issue that causes Gurobi to find a drastically different objective value when a certain number of threads is set. In particular, I got ...