[petsc-dev] resurrecting the finite element energy functions thread

[Jed Brown]

Lisandro Dalcin <dalcinl at gmail.com> writes:
> I thought to do that in PetIGA, but then realized that a reducer+eval
> at quadrature points+MPI_MAX sounds weird (though I can imagine some
> use cases). A reduce with MPI_MAX is a lucky consequence of computing
> integrals through quadrature.

Suppose we want to know the max stress in a structure to determine
whether it will be damaged by a given loading scenario?  The quadrature
points are not sufficient to determine a max stress for the discrete
solution, but it is a convergent method for determining the max stress
of the continuum structure.
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