Sum factorization

[hiemstar]

Gridap.jl looks like a great project.

Is sumfactorization implemented to evaluate integrals efficiently?

If not, it would be interesting to implement it, specifically combined with matrix-free methods and automatic differentiation, see e.g. this paper

[JordiManyer]

Hello @hiemstar,
It is currently in the pipelines. I am working on matrix-free methods (including sum-factorization) as part of my PhD. I have a working prototype in a private repo, and hope to get a something more stable within the next few months that I can include in the public repos.
So stay tuned, its coming 👍🏽

[hiemstar]

Nice! Maybe the following is helpful feather

We have a Julia implementation with sum factorization for both matrix and matrix-free methods. Documentation is absent. If you want to know more let me know.