Mark,

By the way, we might be able to answer your question better if you gave extra 
information about what you are trying to do. Short of writing a book on the ins 
and outs of parallel processing in ParaView, we can only guess what you might 
need.

Most filters, even though they are run in parallel only need to consider the 
local partition of data they are given. There are, of course, exceptions, but 
if you give us some hints at what you are trying to do we might be able to give 
you better advice.

-Ken


From: David E DeMarle 
<[email protected]<mailto:[email protected]>>
Date: Thursday, March 27, 2014 9:21 AM
To: "Vanmoer, Mark W" <[email protected]<mailto:[email protected]>>
Cc: paraview <[email protected]<mailto:[email protected]>>
Subject: [EXTERNAL] Re: [Paraview] parallel filter question

Pretty much yeah. ParaView does interprocess communication as little as it can.

Grep for vtkMPIController in ParaViewCore/VTKExtensions and 
VTK/Filters/Parallel for examples of the mechanics of having parallel filters 
communicate amongst themselves.

David E DeMarle
Kitware, Inc.
R&D Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4909


On Thu, Mar 27, 2014 at 11:00 AM, Vanmoer, Mark W 
<[email protected]<mailto:[email protected]>> wrote:
Hi all, I’m actually new to nuts and bolts parallel programming, so this 
question might be a bit basic. I was re-reading section 13.4 of the ParaView 
Guide and wanted to clarify, is it correct to say that ParaView only does 
gathering for the image output that IceT is going to composite? That for 
filters that need to use any other data from the pipeline for non-image output, 
that gathering has to be done by hand?

Mark

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