[petsc-users] Modeling a Network with DMPlex?

Jed Brown jed at jedbrown.org
Mon Feb 10 00:35:45 CST 2014

Florian Meier <florian.meier at koalo.de> writes:

> Hi,
> I would like to solve a non-linear equation system over a computer
> network. This is somewhat similar to FEM. There is a bunch of
> equations for each link that includes variables of adjacent links. I
> assume there is some support in PETSc for mapping the network to
> memory, distribute it and iterate over the adjacent links, but all
> examples I could found for DMPlex are so tightly coupled to FEM that I
> am not able to separate the relevant parts from the parts that are
> only needed for FEM (e.g. continuous elements, discretization).
> Is DMPlex actually the right place to look?

You can describe a network having only edges and vertices.  This sounds
similar to what Shri does for power networks.  You wouldn't use the FEM
interfaces, but the DMPlex primitives still apply.
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