Paraview grid parallel sort #299
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Created mpi4py based bucket sort implementation and associated unit tests.
Added API in SpartaGridFile to skip input lines when reading in parallel.
Option to parallel bucket sort can enable file based buckets in addition to memory.
Can either read from existing sorted grid file files or call parallel bucket sort to files if files do not exist.
grid2paraview produces unstructured grid output files on each processor for 2d and 3d input cases.
Use vtkMergePoints point locator to reduce memory usage when creating unstructured grid on each MPI rank.
Fixed bug when creating grid with no flow file input.
Added more status information to output when reading flow files.
Use global ids array to get cell indices during flow file read rather than create additional dictionary.
Removed global ids array when not writing any flow file data.
Added command line options to output only select flow file variables and control use of float or double precision in flow file output cell arrays.
Switched global_ids to use Python dict instead of a vtkDataArray for faster search.
Created README for grid2paraview_cells.py Changed grid2paraview_cells.py to exit with an error message when names given with the --variable option are not found in the flow files.
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Purpose
Enhancements to the Sparta ParaView tools to allow processing of very large refined grids in parallel.
Author(s)
Thomas Otahal (tjotaha@sandia.gov)
Backward Compatibility
Backwards compatible
Implementation Notes
Provide any relevant details about how the changes are implemented, how correctness was verified, how other features - if any - in SPARTA are affected
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