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Dear all,
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<div class="">We have recently come across the following error when using the D3 filter on large and distributed vtkUnstructuredGrids. We have our own reader that locally creates a vtkUnstructuredGrid by reading the according subdomain from a file in netcdf
format and I would like to use the D3 filter to have halo cells available on all domains (e.g. for gradient computations). For small scale meshes containing about 260 x 10^6 cells there is no problem. However, when I want to execute the filter on 1.8 x 10^9
cells I get the following error messages:</div>
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<div class="">Warning: In /dev/shm/domini/ParaView/4.4.0/intel-para-2015.07-mpi-devel/ParaView-v4.4.0-source/VTK/Filters/Parallel/vtkPKdTree.cxx, line 207</div>
<div class="">vtkPKdTree (0x2943d0c0): (process 490) memory allocation on my node (BreadthFirstDivide)</div>
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<div class="">ERROR: In /dev/shm/domini/ParaView/4.4.0/intel-para-2015.07-mpi-devel/ParaView-v4.4.0-source/VTK/Filters/ParallelMPI/vtkDistributedDataFilter.cxx, line 796</div>
<div class="">vtkDistributedDataFilter (0x29433cd0): Unable to build k-d tree structure</div>
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<div class="">the same is happening with other remote nodes, i.e.,</div>
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<div class="">Warning: In /dev/shm/domini/ParaView/4.4.0/intel-para-2015.07-mpi-devel/ParaView-v4.4.0-source/VTK/Filters/Parallel/vtkPKdTree.cxx, line 207</div>
<div class="">vtkPKdTree (0x2a9fdf20): (process 137) memory allocation on a remote node (BreadthFirstDivide)</div>
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<div class="">I run a server on 576 cores using ParaView version 4.4.0. The program does not crash after this error, however, it is not creating any output. I have tracked down the error to the following (potential) location. I noticed that this error seems
to be generated in the function BreadthFirstDivision, which somehow returns the error code 1, which is then in AllCheckForFailure summarized to a value > 0 on all MPI ranks leading to the error message. I also noticed that this cannot be a VTKERROR as it is
not printed to the terminal. I believe that the error might reside in the check for midpt < -1, which would also return an error code of 1 in BreatdhFirstDivision.</div>
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<div class="">I hope you can help me with this problem. Thanks a lot in advance!</div>
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<div class="">Michael</div>
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--<br class="">
Michael Schlottke-Lakemper<br class="">
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Chair of Fluid Mechanics and Institute of Aerodynamics<br class="">
RWTH Aachen University<br class="">
Wüllnerstraße 5a<br class="">
52062 Aachen<br class="">
Germany<br class="">
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Phone: +49 (241) 80 95188<br class="">
Fax: +49 (241) 80 92257<br class="">
Mail: <a href="mailto:m.schlottke-lakemper@aia.rwth-aachen.de" class="">m.schlottke-lakemper@aia.rwth-aachen.de</a><br class="">
Web: <a href="http://www.aia.rwth-aachen.de" class="">http://www.aia.rwth-aachen.de</a></div>
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