Oscar Dowson
Oscar Dowson
Ipopt v1.8.0 adds the `Ipopt._VectorNonlinearOracle` set. The purpose of this issue is to explain our motivation for adding the set, and what we plan to do about it in the...
Found as part of #2695. But it does't need to hold that up merging. The last `MOI.is_valid` should return `false`: ```Julia julia> import MathOptInterface as MOI julia> include("test/Bridges/sdpa_models.jl") julia> model...
@lkapelevich and @HFriberg have been emailing me about the upcoming CBF v4, https://cblib.zib.de/doc/format4.pdf, which proposes to add an n-dimensional PowerCone. We've talked about this somewhat before: https://github.com/jump-dev/MathOptInterface.jl/issues/977 There are two...
In https://github.com/jump-dev/Gurobi.jl/blob/9720c804e8f52ff316652ca5d1818e7f198a59a6/src/MOI_wrapper/MOI_wrapper.jl#L3435 we use `Start`, which is for **feasible** MIP solutions: https://docs.gurobi.com/projects/optimizer/en/current/reference/attributes/variable.html#attrstart See instead `PStart`: https://docs.gurobi.com/projects/optimizer/en/current/reference/attributes/variable.html#attrpstart
Closes https://github.com/lanl-ansi/PowerModels.jl/issues/55 We might need to test this on a much larger problem, since there are some test differences. I'll comment in-line on some things.
[potentially breaking] Use JuMP.SkewSymmetricMatrixSpace in variable_bus_voltage(::AbstractWRMModel
Closes https://github.com/lanl-ansi/PowerModels.jl/issues/730 This needs discussion in our call: * What's up with the bounds? * Is this breaking, because `WI` is now `AffExpr`?
This question came up on Discourse: https://discourse.julialang.org/t/socp-and-sdp-solver-errors-in-powermodelsdistribution-jl/123945. Posting here because it looks like a bug to me, although we might be using it wrong. With the input file: https://github.com/lanl-ansi/PowerModelsDistribution.jl/blob/main/test/data/opendss/case3_balanced_battery.dss ```julia...
I didn't test locally, but https://github.com/jump-dev/MathOptInterface.jl/actions/runs/18511698884/job/52871300230 tells me that this package doesn't load on Julia v1.12.
Our EpsilonConstraint method is ``` min f_1(x) f_2(x)
Issue #105 has demonstrated that we need better testing of the algorithms. One approach is to hand-craft tests. But that's pretty slow and limiting. It'd be better if we could...