I’ve put together a minimal, tiny draft of a project idea I had. It’s about helping to work with large structured models, the kind of thing you might use g2o for (and I imagine similar things might exist for FEM). Basically we have formulas that need to be evaluated for many indices, and the idea is to help doing that and also calculating the Jacobian.

I would love to hear some comments! Check it out at: https://github.com/nlw0/SparseBlockJacobians.jl