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<div>Have you tried doing the threshold last (after the contour) rather than first? Generally, ParaView relies on ghost zones (cells) to avoid artifacts across process boundaries.</div>
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<div>-Ken</div>
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<span style="font-weight:bold">From: </span>ParaView <<a href="mailto:paraview-bounces@paraview.org">paraview-bounces@paraview.org</a>> on behalf of David Ortley <<a href="mailto:djortley@gmail.com">djortley@gmail.com</a>><br>
<span style="font-weight:bold">Date: </span>Monday, February 8, 2016 at 1:14 PM<br>
<span style="font-weight:bold">To: </span>"<a href="mailto:paraview@paraview.org">paraview@paraview.org</a>" <<a href="mailto:paraview@paraview.org">paraview@paraview.org</a>><br>
<span style="font-weight:bold">Subject: </span>[EXTERNAL] [Paraview] Parallel unfriendly filters?<br>
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<div dir="ltr">I'm running Paraview in client/server mode with the server running on an HPC platform across multiple nodes.
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<div>My input is a multi-block silo file that contains ghost zone information. The way I do a seamless contour when visualizing on my workstation is to do the following:</div>
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<div>Load the silo file</div>
<div> -> Threshold out the ghost zones (threshold filter)</div>
<div> -> Merge the blocks</div>
<div> -> Cell data to point data</div>
<div> -> Contour</div>
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<div>This works well enough when on a single machine. But when visualizing client/server with the server running across multiple nodes, there appear seams on the contours.</div>
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<div>Is this an expected behavior given my setup? Are any of the filters that I listed above (Threshold, Merge Blocks, Cell data to point data, and Contour) not fully implemented in parallel yet?</div>
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<div>nb - I've not spent a lot of time trying to debug the problem, so I don't know if the problem exists when a server is running on a single node only. It looks like something that is happening at node boundaries, but I could be wrong and it could be a per/processor
thing.</div>
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<div>Thanks.</div>
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<div>-David Ortley</div>
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