On Thu, Jan 11, 2024 at 11:59 AM Noam T. <[email protected]> wrote:
Without using the flag -dm_plex_gmsh_use_regions, the DMGetNumLabels says there are 5, named celltype, depth, cell/face/vertex sets. With the flag, the labels are celltype, depth, my_vol, my_surface (using the same example as before). Am I misusing the flag somehow, and I should be able to access those of cell/face/vertex as well?
Shoot, yes this changed after another request. Yes, we can put in a flag for that. Should not take long. Thanks, Matt
PS: Using PETSc 3.20.3
Thanks, Noam On Thursday, January 11th, 2024 at 5:28 PM, Matthew Knepley < [email protected]> wrote:
On Thu, Jan 11, 2024 at 11:18 AM Noam T. via petsc-users < [email protected]> wrote:
Would it be feasible to have an option (e.g. new flag along the lines of -dm_plex_gmsh_...) that allows the user to access both the default sets (Cell / Face / Vertex) together with user-defined gorups (those under $PhysicalNames, available when using -dm_plex_gmsh_use_regions)?
I am not sure I understand the question. When you turn on regions, it makes extra labels, but the generic labels still exist.
Thanks,
Matt
That is, with a *.msh file containing
$PhysicalNames 2 2 100 "my_surface" 3 200 "my_vol"
the return of DMGetLabelName(dm, n, name) would be (order may differ)
n = 0, name = "celltype" n = 1, name = "depth" n = 2, name = "Cell Sets" n = 3, name = "my_vol" n = 4, name = "Face Sets" n = 5, name = "my_surface" ...
I poked into src/dm/impls/plex/plexgmsh.c and have managed to print all the labels after changing a couple of variable values, so perhaps it is doable. The changes made are not a solution, simply naively set some variables to skip checking for the use_regions flag, so it understandably crashes soon after.
Thanks, Noam
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-- 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://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>