# Elisabeth Rodriguez-Heck

Gurobi Staff
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## Activity overview

Latest activity by Elisabeth Rodriguez-Heck
• Elisabeth Rodriguez-Heck commented,

Hi Giovanni, From the contents of your Library folder, it looks like you don't have Gurobi installed (when you have it installed correctly you should see a folder "gurobi912" inside the Library fol...

• Elisabeth Rodriguez-Heck commented,

Hi Daniel,  This page of the documentation also discusses objective ranges. It is recommended for the coefficients of the objective function to be not larger than 10^4, so reducing the size of the ...

• Elisabeth Rodriguez-Heck commented,

Hi Qiang, It seems that you are trying to run the Gurobi Command-Line Tool $$\texttt{gurobi_cl}$$ from within the Interactive Shell, which is opened using the Gurobi icon on the Windows Desktop o...

• Elisabeth Rodriguez-Heck commented,

Hi Julien, The error comes indeed from the huge problem size. For the Matlab interface, there is currently a limit of 2 billion non-zero entries in the constraint matrix, which is largely exceeded ...

• Elisabeth Rodriguez-Heck commented,

Hi Julien, Could you share a sort, self-contained code snippet generating the error you are getting? Also, could you share the size of your constraint matrix (number of rows, number of columns, num...

• Elisabeth Rodriguez-Heck commented,

Hi Biswajit, You can find a few more suggestions on how to avoid an Out of Memory error in our article How do I avoid an Out of Memory condition? If you have already tested setting the NodeFileStar...

• Elisabeth Rodriguez-Heck commented,

Hi Akram, The documentation page Solution Pool and Multi-Scenario Logging explains what you should see in the Gurobi log in the second phase (once attention has shifted towards finding solutions be...

• Elisabeth Rodriguez-Heck commented,

Hi Akram, To find more feasible solutions, in addition to setting the PoolSolutions parameter, you should also set the PoolSearchMode parameter to one of the non-default values.  You can find more ...

• Elisabeth Rodriguez-Heck created an article,

### What does Gurobi return when the first pass in a hierarchical multi-objective optimization terminates with no solution?

When using customized termination criteria in multi-objective environments, if no incumbent is available when reaching the TimeLimit for the first objective, then the complete multi-objective optim...

• Elisabeth Rodriguez-Heck commented,

Hi Ali, In order to retrieve the dual values of your constraints in the code above, you could first store these constraints in an array and use this array later to get the dual values. I am sharing...