Riley Clement

Gurobi Staff Gurobi Staff
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Activity overview

Latest activity by Riley Clement

  • Riley Clement commented,

    1. Community
    2. Other
    3. Error 10001 : Out of memory

    Hi Emma, No worries, I can work without this file. I suspect that after 48 hours your data structures where you are recording data, in particular my_dict_aff have grown quite large and they are tyi...

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    • Riley Clement
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  • Riley Clement commented,

    1. Community
    2. Other
    3. Error 10001 : Out of memory

    Hi Emma, Any chance you can upload your excel file to a cloud drive, such as Dropbox, so I can reproduce your run? - Riley

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  • Riley Clement commented,

    1. Community
    2. Other
    3. Error 10001 : Out of memory

    Hi Emma, Yes, you can use import gurobipy as gp in your code and I expect it to work for you. Some users experience licencing issues that need troubleshooting but given your command line Gurobi wo...

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  • Riley Clement commented,

    1. Community
    2. Other
    3. Error 10001 : Out of memory

    Hi Emma, Looks like your Gurobi install is setup correctly. PuLP isn't going to give us any more information so it'll be hard to fix without knowing what the problem is. At least if you use guro...

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  • Riley Clement commented,

    1. Community
    2. Other
    3. Error 10001 : Out of memory

    Hi Emma, The error suggests that PuLP couldn't run Gurobi for some reason.  Unfortunately it does not give any clues as to what this reason could be.  You can run Gurobi from the command line using...

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  • Riley Clement commented,

    1. Community
    2. Feature Requests
    3. Request that Model.cbGetSolution() can also take expressions as arguments

    Hi Michael, Here's a couple of code patterns that might be close to your preferred style.  The first attaches the solution value to each variable using an attribute.  The second creates a tupledict...

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    • Riley Clement
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  • Riley Clement commented,

    1. Community
    2. Modeling
    3. Error when building nonlinear constraints using addGenConstrXxx() and addConstr()

    Ah, yes I forgot to mention I was error handling: try { ...} catch(GRBException e) {    cout << "Error code = " << e.getErrorCode() << endl;   cout << e.getMessage() << endl;} - Riley

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    • Riley Clement
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  • Riley Clement commented,

    1. Community
    2. Modeling
    3. Error when building nonlinear constraints using addGenConstrXxx() and addConstr()

    Hi Christian, When I run your code the error that is produced is the following: Error code = 10021Quadratic equality constraints are non-convex. Set NonConvex parameter to 2 to solve model. If you ...

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  • Riley Clement commented,

    1. Community
    2. Other
    3. Error 10001 : Out of memory

    Hi Emma, If you replace PuLP with Gurobipy then you would not use the del statement. Making sure the model is disposed of can either be done via Model.dispose() or even better using context manager...

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  • Riley Clement commented,

    1. Community
    2. Other
    3. Error 10001 : Out of memory

    Hi Emma, Thanks for posting the code. I am reasonably confident that the issue is not with Gurobi here.  The log file you posted shows a very small model - not one that would result in a memory er...

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    • Riley Clement
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