ML has/had a method derived from Hiptmair in AMG but we don't have an
interface to it and ML is in a funny state wrt PETSc.
Manteuffel, et al, preferred to avoid all the projecting back and forth,
which always looked fragile to me in an AMG context, and step on the null
space of each element with
Hello,
Is anyone aware of an openly-available PETSc implementation of Hiptmair—Xu
preconditioner, especially for problems in H(curl)?
For some applications, I’m currently using AMS from hypre, but for some others,
it’s not applicable, e.g., --with-scalar-type=complex where GAMG could be used
ins
