Parallel calculation problem for OpenFOAM-CalculiX Perpendicular flap tutorial

Dear @Yongbo,

could you try with nearest-neighbor mapping instead of RBF? If it works for longer*, then you may be facing this PETSc-related known error and you could try building PETSc from source instead.

If this does not work, then please rerun the simulations with debug output enabled.

*it will eventually break for numerical reasons.