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    • Jaswant Panchumarti (Kitware)'s avatar
      AMReXParticlesReader: handle inexact division of grids among MPI ranks · 406cceb9
      Jaswant Panchumarti (Kitware) authored
      - this commit fixes the grid-process assignment logic robust
      when the number of grids cannot be exactly divided among
      the number of MPI ranks (pieces in this code)
      - this commit also adds MPI awareness to an existing unit test.
      - the unit test TestAMReXParticlesReader is run with MPI, when enabled,
      on 3 nodes. It passes only when the sum of the number of points across
      all nodes is equal to a known value.
      - without the change in vtkAMReXParticlesReader, the unit test will faill with MPI
      
      (cherry picked from commit de94dced)
      406cceb9
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