# Baron installation issue

**URL:** <https://discourse.julialang.org/t/baron-installation-issue/113603>\
**Category:** Optimization (Mathematical)\
**Created:** [April 29, 2024, 7:26am UTC](https://discourse.julialang.org/t/baron-installation-issue/113603 "2024-04-29T07:26:46Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![manoj.centura](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/manoj.centura/32/216443_2.png) [@manoj.centura](https://discourse.julialang.org/u/manoj.centura)\
**Post date:** [April 29, 2024, 7:26am UTC](https://discourse.julialang.org/t/baron-installation-issue/113603/1 "2024-04-29T07:26:46Z")

</div>

hi All,  
i am facing running the issue in BARON.

````using

m = Model(BARON.Optimizer)
ub = [2, 2, 1]
@variable(m, 0 ≤ x[i = 1:3] ≤ ub[i])
@variable(m, y[1:3], Bin)

@NLconstraints(
    m,
    begin
        0.8log(x[2] + 1) + 0.96log(x[1] - x[2] + 1) - 0.8x[3] ≥ 0
        log(x[2] + 1) + 1.20log(x[1] - x[2] + 1) - x[3] - 2y[3] ≥ -2
        x[2] ≤ x[1]
        x[2] ≤ 2y[1]
        x[1] - x[2] ≤ 2y[2]
        y[1] + y[2] ≤ 1
    end
)

@NLobjective(
    m,
    Min,
    5y[1] + 6y[2] + 8y[3] + 10x[1] - 7x[3] - 18log(x[2] + 1) -
    19.2log(x[1] - x[2] + 1) + 10
)

optimize!(m)```

```optimize!(m)
Base.IOError("could not spawn `'C:\\baron' 'C:\\Users\\MANOJK~1.RAM\\AppData\\Local\\Temp\\jl_r0gXN1\\baron_problem.bar'`: no such file or directory (ENOENT)", -4058)
OPTIONS{
TimName: "C:\Users\MANOJK~1.RAM\AppData\Local\Temp\jl_r0gXN1\tim.lst";
ProName: "C:\Users\MANOJK~1.RAM\AppData\Local\Temp\jl_r0gXN1\baron_problem.bar";
ResName: "C:\Users\MANOJK~1.RAM\AppData\Local\Temp\jl_r0gXN1\res.lst";
SumName: "C:\Users\MANOJK~1.RAM\AppData\Local\Temp\jl_r0gXN1\sum.lst";
}

BINARY_VARIABLES x4, x5, x6;
POSITIVE_VARIABLES x1, x2, x3;

LOWER_BOUNDS{
x1: 0.0;
x2: 0.0;
x3: 0.0;
}

UPPER_BOUNDS{
x1: 2.0;
x2: 2.0;
x3: 1.0;
}

EQUATIONS e1, e2, e3, e4, e5, e6;
e1: ((((0.8*(log((x2+1.0))))+(0.96*(log(((x1-x2)+1.0)))))-(0.8*x3))-0.0) >= 0.0;
e2: (((((log((x2+1.0)))+(1.2*(log(((x1-x2)+1.0)))))-x3)-(2.0*x6))--2.0) >= 0.0;
e3: ((x2-x1)-0.0) <= 0.0;
e4: ((x2-(2.0*x4))-0.0) <= 0.0;
e5: (((x1-x2)-(2.0*x5))-0.0) <= 0.0;
e6: ((x4+x5)-1.0) <= 0.0;

OBJ: minimize ((((((5.0*x4)+(6.0*x5)+(8.0*x6)+(10.0*x1))-(7.0*x3))-(18.0*(log((x2+1.0)))))-(19.2*(log(((x1-x2)+1.0)))))+10.0);

````

anu suggestion how to resolve it.

---

<div class="post-metadata">

**Author:** ![TheLateKronos](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/thelatekronos/32/12824_2.png) [@TheLateKronos](https://discourse.julialang.org/u/TheLateKronos)\
**Post date:** [April 29, 2024, 8:16am UTC](https://discourse.julialang.org/t/baron-installation-issue/113603/2 "2024-04-29T08:16:36Z")

</div>

> [@manoj.centura](#):
>
> `BARON`

Which packages have you loaded?

Have you followed the installation instructions for Baron.jl?

 ![Screenshot_20240429-101514](https://global.discourse-cdn.com/julialang/original/3X/a/5/a5d2efd18378d7925b5cd00754de2f73bfedc1cc.jpeg)

---

<div class="post-metadata">

**Author:** ![manoj.centura](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/manoj.centura/32/216443_2.png) [@manoj.centura](https://discourse.julialang.org/u/manoj.centura)\
**Post date:** [April 29, 2024, 10:20am UTC](https://discourse.julialang.org/t/baron-installation-issue/113603/3 "2024-04-29T10:20:22Z")

</div>

I follwed the setps mentioned in baron.jl. I just trying to run MINLP.jl from baron.jl \test.

```julia
Base.IOError("could not spawn `'C:\\baron' 'C:\\Users\\MANOJK~1.RAM\\AppData\\Local\\Temp\\jl_oaSfa9\\baron_problem.bar'`: no such file or directory (ENOENT)", -4058)
OPTIONS{
TimName: "C:\Users\MANOJK~1.RAM\AppData\Local\Temp\jl_oaSfa9\tim.lst";
ProName: "C:\Users\MANOJK~1.RAM\AppData\Local\Temp\jl_oaSfa9\baron_problem.bar";
ResName: "C:\Users\MANOJK~1.RAM\AppData\Local\Temp\jl_oaSfa9\res.lst";
SumName: "C:\Users\MANOJK~1.RAM\AppData\Local\Temp\jl_oaSfa9\sum.lst";
}

BINARY_VARIABLES x4, x5, x6;
POSITIVE_VARIABLES x1, x2, x3;

LOWER_BOUNDS{
x1: 0.0;
x2: 0.0;
x3: 0.0;
}

UPPER_BOUNDS{
x1: 2.0;
x2: 2.0;
x3: 1.0;
}

EQUATIONS e1, e2, e3, e4, e5, e6;
e1: ((((0.8*(log((x2+1.0))))+(0.96*(log(((x1-x2)+1.0)))))-(0.8*x3))-0.0) >= 0.0;
e2: (((((log((x2+1.0)))+(1.2*(log(((x1-x2)+1.0)))))-x3)-(2.0*x6))--2.0) >= 0.0;
e3: ((x2-x1)-0.0) <= 0.0;
e4: ((x2-(2.0*x4))-0.0) <= 0.0;
e5: (((x1-x2)-(2.0*x5))-0.0) <= 0.0;
e6: ((x4+x5)-1.0) <= 0.0;

OBJ: minimize ((((((5.0*x4)+(6.0*x5)+(8.0*x6)+(10.0*x1))-(7.0*x3))-(18.0*(log((x2+1.0)))))-(19.2*(log(((x1-x2)+1.0)))))+10.0);

ERROR: failed to call BARON exec C:\baron
Stacktrace:
 [1] error(s::String)
   @ Base .\error.jl:33
 [2] optimize!(model::BARON.Optimizer)
   @ BARON ~\.julia\packages\BARON\MCs9G\src\MOI_wrapper.jl:66
 [3] optimize!
   @ ~\.julia\packages\MathOptInterface\yvYgQ\src\Bridges\bridge_optimizer.jl:376 [inlined]
 [4] optimize!
   @ ~\.julia\packages\MathOptInterface\yvYgQ\src\MathOptInterface.jl:85 [inlined]
 [5] optimize!(m::MathOptInterface.Utilities.CachingOptimizer{MathOptInterface.Bridges.LazyBridgeOptimizer{BARON.Optimizer}, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}})
   @ MathOptInterface.Utilities ~\.julia\packages\MathOptInterface\yvYgQ\src\Utilities\cachingoptimizer.jl:316
 [6] optimize!(model::Model; ignore_optimize_hook::Bool, _differentiation_backend::MathOptInterface.Nonlinear.SparseReverseMode, kwargs::Base.Iterators.Pairs{Union{}, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
   @ JuMP ~\.julia\packages\JuMP\9CBpS\src\optimizer_interface.jl:416

caused by: IOError: could not spawn `'C:\baron' 'C:\Users\MANOJK~1.RAM\AppData\Local\Temp\jl_oaSfa9\baron_problem.bar'`: no such file or directory (ENOENT)
Stacktrace:
  [1] _spawn_primitive(file::String, cmd::Cmd, stdio::Vector{Any})
    @ Base .\process.jl:99
  [2] #637
    @ .\process.jl:112 [inlined]
  [3] setup_stdios(f::Base.var"#637#638"{Cmd}, stdios::Vector{Any})
    @ Base .\process.jl:196
  [4] _spawn
    @ .\process.jl:111 [inlined]
  [5] run(::Cmd; wait::Bool)
    @ Base .\process.jl:439
  [6] run
    @ .\process.jl:438 [inlined]
  [7] optimize!(model::BARON.Optimizer)
    @ BARON ~\.julia\packages\BARON\MCs9G\src\MOI_wrapper.jl:62
  [8] optimize!
    @ ~\.julia\packages\MathOptInterface\yvYgQ\src\Bridges\bridge_optimizer.jl:376 [inlined]
  [9] optimize!
    @ ~\.julia\packages\MathOptInterface\yvYgQ\src\MathOptInterface.jl:85 [inlined]
 [10] optimize!(m::MathOptInterface.Utilities.CachingOptimizer{MathOptInterface.Bridges.LazyBridgeOptimizer{BARON.Optimizer}, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}})
    @ MathOptInterface.Utilities ~\.julia\packages\MathOptInterface\yvYgQ\src\Utilities\cachingoptimizer.jl:316
 [11] optimize!(model::Model; ignore_optimize_hook::Bool, _differentiation_backend::MathOptInterface.Nonlinear.SparseReverseMode, kwargs::Base.Iterators.Pairs{Union{}, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
    @ JuMP ~\.julia\packages\JuMP\9CBpS\src\optimizer_interface.jl:416
```

---

<div class="post-metadata">

**Author:** ![odow](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/odow/32/28685_2.png) [@odow](https://discourse.julialang.org/u/odow)\
**Post date:** [May 1, 2024, 2:09am UTC](https://discourse.julialang.org/t/baron-installation-issue/113603/4 "2024-05-01T02:09:41Z")

</div>

Does `C:\\baron` exist? If you run `import Pkg; Pkg.test("BARON")` do the tests pass?

Perhaps you need `ENV["BARON_EXEC"] = "C:\\baron.exe"`?