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Testing Mesh::Redistribute() in chessboard fashion
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=====
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This test is located in tests/pmesh_test000
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This test is located in `tests/pmesh_test000`
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###Brief
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Mesh::Redistribute() should correctly redistribute cells from one proccess to another.
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Mesh::Redistribute() should correctly redistribute cells from one process to another.
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##Description
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Test loads included 3x3x3 rectangular serial mesh (3x3x3.vtk) on one node. GlobalID is computed for cells. Cells are distributed in chessboard fashion and several redistribution steps are performed to shift each cell from each process to another.
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Test loads included 3x3x3 rectangular serial mesh (`3x3x3.vtk`) on one node. GlobalID is computed for cells. Cells are distributed in chessboard fashion and several redistribution steps are performed to shift each cell from each process to another.
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If only two procceses are used, we assume that chessboard-like partition with one layer of ghost cells will cover the whole mesh. This check is also performed in this test.
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If only two processes are used, we assume that chessboard-like partition with one layer of ghost cells will cover the whole mesh. This check is also performed in this test.
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##Arguments
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The test have one optional parameter, the name of file to load initial mesh from.
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One can generate simple IxJxK grids using example/GridGen code.
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One can generate simple IxJxK grids using `example/GridGen` code.
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##CMake tests
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If USE_MPI is activated and CMake have variable ${MPIEXEC} set up correctly then the test will seed pmesh_test000_parallel_np_* tests for np=2,3,4 with included 3x3x3.vtk grid.
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If `USE_MPI` is activated and CMake have variable `${MPIEXEC}` set up correctly then the test will seed `pmesh_test000_parallel_np_*` tests for `np=2,3,4` with included `3x3x3.vtk` grid.
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