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    • Peter W. Draper's avatar
      Merge branch 'repartition-updates' into 'master' · 290e85f7
      Peter W. Draper authored
      Minimize particle movement during repartitioning
      
      Attempt to keep particles on local nodes by comparing the new and old regions and
      permuting the solution by picking new regions with the largest number of 
      cells in the old regions. Gives an unmoved fraction of around 42% for larger
      numbers of ranks (compared to `1/nrank` for the current scheme).
      
      Doesn't make a huge improvement to runtimes, seems to be around 10% on a
      repartition step of `EAGLE_25`, and we only do that infrequently.
      
      
      See merge request !288
      290e85f7