<div dir="ltr"><div dir="ltr">On Thu, Feb 12, 2026 at 9:37 AM Matteo Semplice via petsc-users <<a href="mailto:petsc-users@mcs.anl.gov">petsc-users@mcs.anl.gov</a>> wrote:</div><div class="gmail_quote gmail_quote_container"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Dear all,<br>
<br>
regarding the two possible ways to represent periodic meshes in <br>
DMPlex (<a href="https://urldefense.us/v3/__https://petsc.org/release/manual/dmplex/*__;Iw!!G_uCfscf7eWS!aZty3mcKlmFws6oDH6dzJajWmHL38hq4105g81qWT-9vNW5RcQ7t39SXetxoJEpVVF_VJno1viNSyiomGVPsLrvdvU75tWZbkMCJaQ$" rel="noreferrer" target="_blank">https://urldefense.us/v3/__https://petsc.org/release/manual/dmplex/*__;Iw!!G_uCfscf7eWS!aZty3mcKlmFws6oDH6dzJajWmHL38hq4105g81qWT-9vNW5RcQ7t39SXetxoJEpVVF_VJno1viNSyiomGVPsLrvdvU75tWZbkMCJaQ$</a> ), I have noticed that <br>
when reading in a GMSH mesh, the periodic topology is created.<br>
<br>
Is there a way to read in a mesh and create instead the non-periodic <br>
topology&local-to-global-map kind of mesh? </blockquote><div><br></div><div>That code is not in there. This seems easier to write.</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Or, is it possible to convert <br>
between the two approaces (i.e. generate a DMPlex that is a quasi-clone <br>
of a given one, but ready for the other kind of periodicity handling)?<br></blockquote><div><br></div><div>This code is not either. This seems harder because you have to choose some</div><div>periodic boundary to tear along.</div><div><br></div><div>I do not really understand the other periodicity, so it would be difficult for me to</div><div>do before the Fall. The libCEED guys wrote the map version.</div><div><br></div><div> Thanks,</div><div><br></div><div> Matt</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
Bets regards<br>
<br>
Matteo<br>
<br>
-- <br>
Prof. Matteo Semplice<br>
Università degli Studi dell’Insubria<br>
Dipartimento di Scienza e Alta Tecnologia – DiSAT<br>
Professore Associato<br>
Via Valleggio, 11 – 22100 Como (CO) – Italia<br>
tel.: +39 031 2386316<br>
<br>
</blockquote></div><div><br clear="all"></div><div><br></div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>-- Norbert Wiener</div><div><br></div><div><a href="https://urldefense.us/v3/__http://www.cse.buffalo.edu/*knepley/__;fg!!G_uCfscf7eWS!dBeL3LumXFsm8dLmfMgJBRhh1F7zXrHaGD1sf6lSy7pnnzjs2EvBJNzne0yCEx6vObTmNqz-Q0nJ2sF9lMbM$" target="_blank">https://www.cse.buffalo.edu/~knepley/</a><br></div></div></div></div></div></div></div></div>