[Paraview-developers] Using vtkPUnstructuredGridGhostCellsGenerator

Tue Apr 12 08:26:15 EDT 2016

Hi Jean,

Thanks for the feedback. Can you roughly estimate the time it took to generate the ghost cells? And was the time strongly correlated to the number of cores used?

Michael

On 12 Apr 2016, at 13:12 , Favre Jean <jfavre at cscs.ch<mailto:jfavre at cscs.ch>> wrote:

I tried running benchmarks yesterday with my reader, and a model that came close, but was not not quite as big as yours. I have several models with 300-400 millions cells. Using the GhostCellGenerator turning OFF the "use GlobalNodeIds" option would always crash, so I could not compare execution with and without it. I tried with different core counts ranging from 24x8 to 48*8 cores. Memory usage before applying the filter would show 20Gb out of 32Gb (per node) used, so I don't think I was crashing on out-of-memory errors.

I have global Ids which are all consecutive, so I cannot answer your 2nd question, but my feeling is that uniqueness is the only necessary condition.

-----------------
Jean M. Favre
Swiss National Supercomputing Center
CH-6900 Lugano
Switzerland

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