[petsc-users] DMPlex bug in src/snes/tutorials/ex17.c

[Ilya Fursov]

Hello,

I have a problem running src/snes/tutorials/ex17.c in parallel,
given the specific runtime options (these options are actually taken from
the test example ex17_3d_q3_trig_elas).

*The serial version works fine:*
./ex17 -dm_plex_box_faces 1,1,1 -sol_type elas_trig -dm_plex_dim 3
-dm_plex_simplex 0 -displacement_petscspace_degree 3 -dm_refine 0
-convest_num_refine 1 -snes_convergence_estimate -snes_monitor

*The parallel version fails:*
mpirun -n 2 ./ex17 -dm_plex_box_faces 1,1,1 -sol_type elas_trig
-dm_plex_dim 3 -dm_plex_simplex 0 -displacement_petscspace_degree 3
-dm_refine 0 -convest_num_refine 1 -snes_convergence_estimate -snes_monitor
*with the error message (--with-debugging=1):*
[0]PETSC ERROR: --------------------- Error Message
--------------------------------------------------------------
[0]PETSC ERROR: Argument out of range
[0]PETSC ERROR: Cell 0 has not been assigned a cell type
[0]PETSC ERROR: WARNING! There are option(s) set that were not used! Could
be the program crashed before they were used or a spelling mistake, etc!
[0]PETSC ERROR:   Option left: name:-convest_num_refine value: 1 source:
command line
[0]PETSC ERROR:   Option left: name:-displacement_petscspace_degree value:
3 source: command line
[0]PETSC ERROR:   Option left: name:-snes_convergence_estimate (no value)
source: command line
[0]PETSC ERROR:   Option left: name:-snes_monitor (no value) source:
command line
[0]PETSC ERROR: See https://petsc.org/release/faq/ for trouble shooting.
[0]PETSC ERROR: Petsc Release Version 3.19.4, unknown
[0]PETSC ERROR: ./ex17 on a DEBUG named ilya-HP-Notebook by ilya Wed Aug  9
19:23:02 2023
[0]PETSC ERROR: Configure options PETSC_ARCH=DEBUG
PETSC_DIR=/home/ilya/build/petsc-09aug-debug/petsc
--with-blaslapack-dir=/home/ilya/progs/OpenBLAS-0.3.21
--with-mpi-dir=/home/ilya/progs/openmpi-4.1.4 --with-debugging=1
--download-hdf5 --download-hypre --download-chaco --download-metis
--download-parmetis --download-suitesparse --download-moab --download-mumps
--download-scalapack --download-superlu --download-superlu_dist
--download-triangle --download-ml --download-giflib --download-libjpeg
--download-libpng --download-zlib --download-spai --download-tchem
--download-party --download-cmake --download-hwloc --download-ptscotch
--download-revolve --download-cams --download-spai
[0]PETSC ERROR: #1 DMPlexGetCellType() at
/home/ilya/build/petsc-09aug-debug/petsc/src/dm/impls/plex/plex.c:5169
[0]PETSC ERROR: #2 SetupFE() at ex17.c:621
[0]PETSC ERROR: #3 main() at ex17.c:654
[0]PETSC ERROR: PETSc Option Table entries:
[0]PETSC ERROR: -convest_num_refine 1 (source: command line)
[0]PETSC ERROR: -displacement_petscspace_degree 3 (source: command line)
[0]PETSC ERROR: -dm_plex_box_faces 1,1,1 (source: command line)
[0]PETSC ERROR: -dm_plex_dim 3 (source: command line)
[0]PETSC ERROR: -dm_plex_simplex 0 (source: command line)
[0]PETSC ERROR: -dm_refine 0 (source: command line)
[0]PETSC ERROR: -snes_convergence_estimate (source: command line)
[0]PETSC ERROR: -snes_monitor (source: command line)
[0]PETSC ERROR: -sol_type elas_trig (source: command line)
[0]PETSC ERROR: ----------------End of Error Message -------send entire
error message to petsc-maint at mcs.anl.gov----------

*And when --with-debugging=0, it fails with segmentation violation:*
[0]PETSC ERROR:
------------------------------------------------------------------------
[0]PETSC ERROR: Caught signal number 11 SEGV: Segmentation Violation,
probably memory access out of range
[0]PETSC ERROR: Try option -start_in_debugger or -on_error_attach_debugger
[0]PETSC ERROR: or see https://petsc.org/release/faq/#valgrind and
https://petsc.org/release/faq/
[0]PETSC ERROR: configure using --with-debugging=yes, recompile, link, and
run
[0]PETSC ERROR: to get more information on the crash.
[0]PETSC ERROR: Run with -malloc_debug to check if memory corruption is
causing the crash.

Regards,
Ilya
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