Problem running complex dolfinx demo in parallel

General
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1

Hi, i’m currently having trouble running dolfinx complex mode in parallel.

Everything works has expected while running in serial with the solution converging to the analytical one, but when i switch to run with mpi problems start to occur. I either get a segmentation fault or the simulation runs endlessly without giving any error message, depending on the solver i choose. This exact behavior also occurs when i try to run the demo “Electromagnetic scattering from a wire with scattering boundary conditions”, where the simulation in parallel runs endlessly without giving any error message (i don’t change anything in the file). I don’t know exactly what is happening, if it’s a problem with my installation or some feature that is not yet implemented.
My second environment using dolfinx in real mode doesn’t have this problem and i can even solve the same problem using a mixed space formulation in parallel, although i would much rather use dolfinx in complex mode as it seems more efficient from the tests made in serial.

Any advice would be great, thanks.

2

How did you install the complex mode environment?

Could you also pinpoint what line in

that is hanging? Ie comment out blocks of code until it runs.

3

Hi, so the install was done using conda with the following commands in order:

  • conda create -n fenicsx-complex
  • conda activate -n fenicsx-complex
  • conda install -c conda-forge python=3.10 fenics-dolfinx petsc==complex mpich
  • conda install gmsh python-gmsh
  • conda install pyvista

As for the error it appears at the solver line. I did further testing and apparently i can run this The Poisson problem with complex numbers — FEniCSx tutorial tutorial in parallel without any problem.