[petsc-users] Discontinuous Galerkin and BDDC

[Jed Brown]

Stefano Zampini <stefano.zampini at gmail.com> writes:

> Il giorno mar 2 feb 2021 alle ore 14:06 Carsten Uphoff <
> uphoff at geophysik.uni-muenchen.de> ha scritto:
>> Questions:
>> - Is there any straightforward way to apply PCBDDC for DG which I am
>> missing?
>>
>
> I don't think so. I know Lawrence gave it some thoughts but never heard
> about a final solution about how to represent subdomain DG matrices via a
> MATIS.

Wouldn't hybridizing work pretty naturally? The dofs are all in a broken trace space and connect through elements with shared support.