fix: remake initialization problem during DAE initialization #2209
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AayushSabharwal
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| if initializeprob.f.sys !== nothing && prob.f.sys !== nothing | ||
| initu0vars = variable_symbols(initializeprob) | ||
| initu0order = variable_index.((initializeprob,), initu0vars) | ||
| # Variable symbols are not guaranteed to be in order | ||
| invpermute!(initu0vars, initu0order) | ||
| initu0 = getu(prob.f.initializeprob, initu0vars)(prob) | ||
| initp = remake_buffer(initializeprob, parameter_values(initializeprob), | ||
| Dict(sym => getu(prob, sym)(prob) for sym in parameter_symbols(initializeprob))) | ||
| initializeprob = remake(initializeprob; u0 = initu0, p = initp) |
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I'm not sure this all makes sense. First of all, it shouldn't come from prob since you can have callback reinitialization, so it should come from integrator.u. But also, this is just very heavy and dynamic: can't we just add a initializeprobsetu in the ODEFunction which sets up the initalizeprob based on integrator.u, and then also have one for p that updates based on any p updates (and also this should update t, which is a psuedo-parameter of the initialization)
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That makes sense. Since this involves SciMLBase changes (changing ODEFunction and DAEFunction fields) I'll merge this PR with #2228 since that depends on this PR and modifies those structs anyway.
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Superseded by #2228 |
Close SciML/ModelingToolkit.jl#2717
Requires
remake_bufferModelingToolkit.jl#2729Checklist
contributor guidelines, in particular the SciML Style Guide and
COLPRAC.
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