[Paraview] artifacts in image data volume rendering

[Burlen Loring]

Hi, I'm encountering what look like process boundaries in image data 
volume rendering. This is view dependent, only certain camera locations 
reveal the issue. In examples below these are "horizontal line" like 
artifacts. This data is large, and I have not been able to successfully 
volume render after tetrahedralizing it. I'm not sure if it's just 
insanely slow or there's a deadlock. My attempts have been up to 1024 
procs with 8 per node (8 GB per proc), That's about the smallest I can 
to get enough ram to do the terahedralization, about 50% of the ram is 
used after the tetrahedralization.  Does anyone know if the fixed point 
vr algorithm is parallel aware, would adding ghost zones to the image 
data help??




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