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Use NonlinearAliasSpecifier to specify aliasing during solve #552

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jClugstor opened this issue Mar 25, 2025 · 2 comments
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Use NonlinearAliasSpecifier to specify aliasing during solve #552

jClugstor opened this issue Mar 25, 2025 · 2 comments

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@jClugstor
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SciMLBase has a new interface for specifying which variables are aliased during a solve. I would like to put this in to use in NonlinearSolve by using the NonlinearAliasSpecifier type from SciMLBase to specify which variables are aliased. Similar to SciML/LinearSolve.jl#564, or SciML/OrdinaryDiffEq.jl#2503.

Putting this here as a tracker/reference, but also the way that NonlinearSolve chooses which variables are aliased is different than some of the other SciML packages, so I'm a bit lost on how this would work. For example the aliasing for OrdinaryDiffEq is decided in the __init function, but that's not the case for NonlinearSolve.
@ChrisRackauckas
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@jClugstor
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SciML/DiffEqBase.jl#1138 puts the basic functionality in

It only lets us toggle alias_u0 though, nothing else.

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@ChrisRackauckas @jClugstor