[petsc-users] Discontinuous Galerkin and BDDC

[Lawrence Mitchell]

> On 3 Feb 2021, at 08:48, Stefano Zampini <stefano.zampini at gmail.com> wrote:
> 

...
> 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.

I think when we discussed this (two+ years ago?), I was just worried about what I was doing. But I never got any further along.

I think Jed's suggestion sounds like it would work.

Lawrence