msx5423

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Recent activity by msx5423 Recent activity Votes
  • Transient errors in compute server jobs

    Answered

    We are using Gurobi Compute Server with cluster manager, and the client is a python application.  Every now and then, some jobs randomly fail with one of the below two errors: 1. ERROR_CSWORKER = 1...

  • How to interpret IntFeasTol ?

    Ongoing

    We are solving a model with the following settings  OptimalityTol = 1e-06, default FeasibilityTol = 1e-05 IntFeasTol = 1e-06 The model is solved but there is a warning about max integrality violati...

  • Runtime in a callback ?

    Answered

    Is it possible to call/access the Runtime object during a solve in a callback ?  https://www.gurobi.com/documentation/9.5/refman/runtime.html

  • When are MIP callbacks executed ?

    Answered

    Three questions regarding callbacks -1. When do MIP callbacks with ``where = 3`` first executed ? The documentation says "in MIP" but what does that mean exactly, as there are different phases in a...

  • How does Gurobi Compute Server allocate memory to different jobs ?

    Answered

    One can configure the max number of concurrent jobs using JobLimit and the number of threads allowed for each job is controlled by the Threads parameter.  Does GCS also control the memory allocated...