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Hi, I have some troubles with Coluna. Here is a MWE of my problem. I create two sub-problems `S1` containing `x[1]` and `S2` containing `x[2]`, with the master `x[1] + x[2] Coluna.Params(
so…
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**No feasible solution**
I am using the Coluna to solve a mixed integer programming, the code doesn't return a feasible solution during the solution process, and returns an error code: ERROR: LoadEr…
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**Is your feature request related to a problem? Please describe.**
According to the response by @guimarqu in #557 :
> You can use lower multiplicity and upper multiplicity. (5,5) if the solution s…
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This problem may be a little strange. I have met a problem that I want to solve by Cplex or Gurobi in iterations 1-5, and then solve it by decomposition methods in the following iterations. Can it be …
YP-Ye updated
2 years ago
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Hi All,
First, I want to thank you guys for putting together a python wrapper to GCG. However, after installing SCIP Optimization Suite 8.0.0 with GCG 3.5.0 and PyGCGOpt 0.1.4, I get a segmentation…
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Hi,
I am looking to pass a structured MILP problem to DSP via python ctypes. However, I don't fully understand the workflow that needs to be implemented. I tried to add a single block to the DspAp…
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**Describe the bug**
Same model as in #557 but after having substituted 1:number_of_machines for the M axis. Also updated to Coluna v0.4.0#master. Model now runs with tree search but produces the f…
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**Describe the bug**
The following code return an error :
``` julia
no method matching isless(::Coluna.ColunaBase.Solution{Coluna.MathProg.Formulation{Coluna.MathProg.DwMaster}, Coluna.MathProg.Va…
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Hello,
I find there are warnings and errors when I try to set
```
coluna=optimizer_with_attributes(
Coluna.Optimizer,
"params"=>Coluna.Params(
solver=Coluna.Algorithm.TreeSearchAlgorithm()
),
…
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**Describe the bug**
The following formulation seems stuck on an endless loop. The depth grows quickly (I reached 4000+ depth before stopping in 0.3.9), though there is only 55 variables. Unless I'm …