Skip to content

vtkDescriptiveStatistics: fixing MPI + overflow

Yohann Bearzi (Kitware) requested to merge yohann.bearzi/vtk:descriptive-statistics-duplicate-output into master

vtkPDescriptiveStatistics was generating the statistics result on all ranks, resulting on duplicated data on distributed inputs. Now on, only rank 0 keeps statistics.

The only impacted output port is port 1, which delivers the output model. For any rank but rank 0, it is now composed of a vtkMultiBlockDataSet with same structure as in rank 0, but with empty leaves.

A test is being added to ensure that the filter has the correct behavior. Numerical instability caused by overflowing ids caused computation errors. This is now fixed.

Kurtosis formula was wrong for distributed input. The formula is now fixed and its new origin is documented both in doxygen and in the code.

Addresses paraview/paraview#20854 (closed)

Merge request reports