Jacob Wren
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Recent activity by Jacob Wren-
Suppress all console output from Gurobi
AnsweredHi, I am using Pyomo in a floating license environment. I set the OutputFlag parameter to 0 before the Gurobi environment is started via: import pyomo.environ as pyoopt = pyo.SolverFactory("gurobi_...
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QCQP tuner difficulties
AnsweredHello, Gurobi is unable to solve my convex quadratically-constrained quadratic program (QCQP) for certain values of a tuning parameter. This is my explanation. Call the tuning parameter epsilon. W...
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Different solutions when changing the Threads parameter
AnsweredHello, I am solving a linear program using Gurobi 9.5.2. I am solving in parallel. Additionally, I set the Method parameter to 4. My solutions differ when I increase the Threads parameter from 1 to...
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Gurobi token server - release tokens
AnsweredHi, I am using the third-party modeling framework, Pyomo, as well as MPI (mpi4py) to run several instances of Gurobi in parallel. I am following the advice given here, but disposeDefaultEnv prints ...
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Pyomo + MPI => 1 environment per process
AnsweredHello, I am using the third-party modeling framework, Pyomo, as well as MPI (mpi4py) to run several instances of Gurobi in parallel. How can I have each process create its own environment? Many tha...
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Free an environment without deleting the model
AnsweredHi, I am using the third-party modeling framework, Pyomo. I am running many small optimizations in succession and then hitting the limit of 4096 tokens. The advice given here, unfortunately, requir...