Query on Running the code due to MFEM abort

[vegaonline]

I installed palace using spack on an Ubuntu based laptop with 64 GB RAM. I wanted run a demo code provided in this repo as example. I selected "cpw_wave_uniform.json". I tried to run $SPACK_ROOT/opt/spack/linux-ubuntu24.04-skylake/gcc-13.3.0/palace-0.12.0-v4b75q2et5rn2pktnxocwx7ukfcfgmml/bin/palace -np 2./cavity_pec.json.

The run aborted due to MFEM-abort: unale to open mesh file "mesh/cylinder_hex.mesh".
How the code generates geometry and then how meshing is done?

It would be good if workflow is given starting from the geometry making, mesh generation, simulation etc.

[hughcars]

Hi @vegaonline,

Palace is not responsible for any geometry construction or mesh generation. That error message is looking for the mesh/cylinder_hex.mesh file which is vended with the Palace installation for that example. The path to the mesh file is relative however, so you need to call palace from the containing directory for the configuration file.

More broadly, a Palace user is required to bring their own mesh generated outside of Palace, the list of supported mesh formats is available here. There is no support for the "geometry making, mesh generation" stages, and no plan to support them in the future. I would suggest gmsh with the OpenCascade kernel as a reasonable open source solution to geometry and mesh generation, but there exist myriad external solutions tailored to particular applications.