[Paraview] big delays in parallel

[Paul Edwards]

Hi,

I'm noticing big delays when running in ParaView in parallel (running 2
cores on latest ParaView version with OpenMPI v1.2.6).  To reproduce:

   - create sphere
   - create cone
   - group datasets (group the sphere and cone)
   - extract block (and select one of the objects)

The first time the extract block filter is called it will hang for about 15
seconds.  After the first update it is instant when reapplying after
changing the block to extract.  But, this will happen again if I delete the
extract block filter and add another one.  I tried debugging this but the
hanging occurs after the RequestData for both processes.  Does anyone know
what could be happening?  Or, can anyone give any advice for what to try?

Thanks in advance,
Paul
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