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At the moment, we have the situation that the exact linear integration method can output wrong results (see #626). In that case, it will output all nans so you know there is a problem. Is there a poss…
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### Description
A static model from the ThermoSysPro library takes a long time to simulate once initialized: the model is ThermoSysPro.Examples.SimpleExamples.TestNTUWaterHeating2
In total 1323 se…
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Right now the abstract optimizer::Solver class is extremely minimalistic, only offering the ability to solve a Problem that was passed in during construction (incidentally, I think it should be possib…
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Hello all,
I have an error "WARNING("nlp:nlp_jac_g failed: NaN detected for output jac_g_x, at nonzero index 1 (row 2, col 0).") [.../casadi/core/oracle_function.cpp:377]" when it try to implement …
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When testing in relation to https://github.com/openjournals/joss-reviews/issues/4882, I tried
`sdgal binarybuilder.bb.gfo qpa ALLINITC.SIF`
and got the opaque error `ERROR return from PRESOLVE (…
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i just added some features that let us plot 2D vector fields. they look like this:
![image](https://user-images.githubusercontent.com/1833099/58384985-359bf980-7fea-11e9-8915-19d38edb16ed.png)
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Extension of the 1D Stefan Problem, described in section 8.4.1 of Perspectives in Fluid Dynamics (Batchelor, Mofatt, Worster 2000)
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### Description
I have a a couple simulation models that -- under some circumstances -- fail when simulating or causes wrong simulation results.
### Steps to Reproduce
Please consider the [li…
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Optimization.jl is okay, but it's not quite conforming to the standards of the SciML interface.
It conflaits the "solver package" with the "interface package". In some sense, the current
Optimizatio…
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For example,
```
Iter f(x) inf-norm Step 2-norm
------ -------------- --------------
0 3.324599e+00 NaN
1 1.074657e+00 1.023475e+01
2 1.0…