<div dir="ltr">DG (discontinuous Galerkin) is done with a "Broken" FE. Yikes I do not see a test.<div>Here is a test but it is not well verified.</div><div>Mark</div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Tue, Feb 10, 2026 at 10:25 AM Matteo Leone via petsc-users <<a href="mailto:petsc-users@mcs.anl.gov">petsc-users@mcs.anl.gov</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="msg-4270249994167352071">
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Hello, I already posted on Reddit but just to be sure I write even here.</div>
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First thanks for the job you do for PETSc, I have used it for several projects and is always nice.</div>
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I am writing cause I am getting mad trying to implement DG solver in PETSc, the target is the Euler equations, however I am failing even with just the simplest transport equation (u/t + u/x = 0). I was wondering if I am missing somenthing. I tried with the
DSSetReimannSolver and DualSpaces, and more, but I keep failing, I tried also with LLMs, but seems like there is no DG code with PETSc on the web, however I see many papers that do it. </div>
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I was wondering if I am maybe missing something out or what.</div>
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For reference I use PETSc 3.24.3 by means of nix. </div>
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Thanks in advance, cheers.</div>
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Matteo</div>
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