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BUG: finite-area: parallel inconsistency in lPN calculations for planar meshes with non-zero skewness/non-orthogonality

Summary

The edgeInterpolation::makeLPN() is found to be inconsistently parallel for planar finite-area meshes with non-zero skewness and/or non-orthogonality:

3-case

3-case-procID

Steps to reproduce

Execute Test-faMesh-edgeInterpolation.zip on finite-area-test-case-lPN.zip in serial and parallel modes, and compare the output lPN fields. (You may want to use Pout in the test app.)

Relevant logs and/or images

Environment information

  • api = 2406
  • HEAD = e4f4c73b
  • compiler = Clang (system) = clang version 15.0.7
  • mpi = SYSTEMOPENMPI = mpirun (Open MPI) 1.10.7.0.5e373bf1fd
  • OS = Description: openSUSE Leap 15.5
  • opts = linux64ClangDPInt32Opt

Possible fixes

Execute the same algorithm of internal edges for the processor edges.