BARON.jl

BARON.jl is a wrapper for BARON by The Optimization Firm.

This wrapper is maintained by the JuMP community and is not officially supported by The Optimization Firm.

If you need help, please ask a question on the JuMP community forum.

If you have a reproducible example of a bug, please open a GitHub issue.

BARON.jl is licensed under the MIT License.

The underlying solver is a closed-source commercial product for which you must obtain a license from The Optimization Firm, although a small trial version is available for free.

First, download a copy of the BARON solver and unpack the executable in a location of your choosing.

Once installed, set the BARON_EXEC environment variable pointing to the BARON executable (full path, including file name as it differs across platforms), and run Pkg.add("BARON"). For example:

ENV["BARON_EXEC"] = "/path/to/baron.exe"
using Pkg
Pkg.add("BARON")

The baronlice.txt license file should be placed in the same directory as the BARON executable, or in your current working directory.

using JuMP, BARON
model = Model(BARON.Optimizer)

The BARON optimizer supports the following constraints and attributes.

List of supported objective functions:

• MOI.ObjectiveFunction{MOI.ScalarAffineFunction{Float64}}
• MOI.ObjectiveFunction{MOI.ScalarQuadraticFunction{Float64}}
• MOI.ObjectiveFunction{MOI.ScalarNonlinearFunction}

List of supported variable types:

• MOI.Reals

List of supported constraint types:

• MOI.ScalarAffineFunction{Float64} in MOI.EqualTo{Float64}
• MOI.ScalarAffineFunction{Float64} in MOI.GreaterThan{Float64}
• MOI.ScalarAffineFunction{Float64} in MOI.Interval{Float64}
• MOI.ScalarAffineFunction{Float64} in MOI.LessThan{Float64}
• MOI.ScalarQuadraticFunction{Float64} in MOI.EqualTo{Float64}
• MOI.ScalarQuadraticFunction{Float64} in MOI.GreaterThan{Float64}
• MOI.ScalarQuadraticFunction{Float64} in MOI.Interval{Float64}
• MOI.ScalarQuadraticFunction{Float64} in MOI.LessThan{Float64}
• MOI.ScalarNonlinearFunction in MOI.EqualTo{Float64}
• MOI.ScalarNonlinearFunction in MOI.GreaterThan{Float64}
• MOI.ScalarNonlinearFunction in MOI.Interval{Float64}
• MOI.ScalarNonlinearFunction in MOI.LessThan{Float64}
• MOI.VariableIndex in MOI.EqualTo{Float64}
• MOI.VariableIndex in MOI.GreaterThan{Float64}
• MOI.VariableIndex in MOI.Integer
• MOI.VariableIndex in MOI.Interval{Float64}
• MOI.VariableIndex in MOI.LessThan{Float64}
• MOI.VariableIndex in MOI.ZeroOne

List of supported model attributes:

• MOI.NLPBlock()
• MOI.ObjectiveSense()