On Tue, May 14, 2024 at 9:07 AM Matthew Knepley <knep...@gmail.com> wrote:
> On Mon, May 13, 2024 at 10:04 PM Adrian Croucher < > a.crouc...@auckland.ac.nz> wrote: > >> On 14/05/24 1:44 pm, Matthew Knepley wrote: >> >> I wish GMsh was clearer about what is optional: >> https://urldefense.us/v3/__https://gmsh.info/doc/texinfo/gmsh.html*MSH-file-format__;Iw!!G_uCfscf7eWS!fewn3DodeIVBmUE15mfIIEWSAHMhFjmoORD8nz_G4QnsaxhItWNFYbe4Lm0noV3Fuzj8ep504ww-M4Z0oroq$ >> >> They do talk about it, but not exhaustively. GMsh always writes and >> $Entities block from what I can tell. >> I can make it optional, it just might take until after the PETSc Meeting. >> >> Looks like $Entities are optional: >> >> >> https://urldefense.us/v3/__https://gitlab.onelab.info/gmsh/gmsh/-/commit/b5feba2af57181ffa946d3f0c494b014603c6efa__;!!G_uCfscf7eWS!fewn3DodeIVBmUE15mfIIEWSAHMhFjmoORD8nz_G4QnsaxhItWNFYbe4Lm0noV3Fuzj8ep504ww-M57ksfou$ >> >> >> I can also load a GMSH 4.1 file without $Entities into GMSH itself and it >> doesn't complain, suggesting that they are indeed optional. >> >> Yes, but they are not careful to specify when a file can be inconsistent. > For instance, omitting the $Entities, but then specifying entity numbers in > the $Nodes block. I think they also thought this was inconsistent, but then > got user complaints. The minimal example they show does exactly this. > >> If the $Entities aren't strictly needed for anything in DMPlex (which I'm >> guessing they aren't, as the GMSH file format 2.2 doesn't even have them) >> then it would be useful not to require them. >> > I put in some code for this: > https://urldefense.us/v3/__https://gitlab.com/petsc/petsc/-/merge_requests/7546__;!!G_uCfscf7eWS!fewn3DodeIVBmUE15mfIIEWSAHMhFjmoORD8nz_G4QnsaxhItWNFYbe4Lm0noV3Fuzj8ep504ww-M-tMQE24$ > > > It just ignores entity numbers when there is no section. > This merged, so now it should be fixed for you. Thanks, Matt > Thanks, > > Matt > >> - Adrian >> >> -- >> Dr Adrian Croucher >> Senior Research Fellow >> Department of Engineering Science >> Waipapa Taumata Rau / University of Auckland, New Zealand >> email: a.crouc...@auckland.ac.nz >> tel: +64 (0)9 923 4611 >> >> > > -- > What most experimenters take for granted before they begin their > experiments is infinitely more interesting than any results to which their > experiments lead. > -- Norbert Wiener > > https://urldefense.us/v3/__https://www.cse.buffalo.edu/*knepley/__;fg!!G_uCfscf7eWS!fewn3DodeIVBmUE15mfIIEWSAHMhFjmoORD8nz_G4QnsaxhItWNFYbe4Lm0noV3Fuzj8ep504ww-M7SPCKFm$ > > <https://urldefense.us/v3/__http://www.cse.buffalo.edu/*knepley/__;fg!!G_uCfscf7eWS!fewn3DodeIVBmUE15mfIIEWSAHMhFjmoORD8nz_G4QnsaxhItWNFYbe4Lm0noV3Fuzj8ep504ww-MzikdTxP$ > > > -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener https://urldefense.us/v3/__https://www.cse.buffalo.edu/*knepley/__;fg!!G_uCfscf7eWS!fewn3DodeIVBmUE15mfIIEWSAHMhFjmoORD8nz_G4QnsaxhItWNFYbe4Lm0noV3Fuzj8ep504ww-M7SPCKFm$ <https://urldefense.us/v3/__http://www.cse.buffalo.edu/*knepley/__;fg!!G_uCfscf7eWS!fewn3DodeIVBmUE15mfIIEWSAHMhFjmoORD8nz_G4QnsaxhItWNFYbe4Lm0noV3Fuzj8ep504ww-MzikdTxP$ >
