[petsc-dev] attempt at understanding PetscFEM

[Jed Brown]

Geoffrey Irving <irving at naml.us> writes:

> Here's an attempt at the tensor definitions of all the functions in
> PetscFEM.  Could you check if it looks correct, especially the
> Jacobian section?

Yes, this looks right.  I write it without the index notation in my
paper (section 3.2 and 3.3).

http://59A2.org/na/Brown-EfficientNonlinearSolversNodalHighOrder3D-2010.pdf


FWIW, I do not agree with Matt's factoring into arrays of function
pointers, especially since material models should be reused.  I think
he's willing to add support for having one function pointer that fills
up some tensors.
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