Hi Aashish,
Great! I've been seeing this bug for a long time going back at least to
ParaView 3.8. It's image data, and I have used the ray cast only option
in ParaView which in the end (via vtk smart volume mapper) corresponds
to the vtk fixed point volume mapper. For this run I used 256 procs, I
can share the data and a state file if it would help.
Burlen
On 10/23/2014 12:41 AM, Aashish Chaudhary wrote:
Burlen,
this certainly looks like the parallel compositing issue to me and we
have seen it before. Just to be clear what mapper you were using to
generate this image? I would love to track dow this issue and
can certainly use your help here.
- Aashish
On Wed, Oct 22, 2014 at 11:01 AM, Burlen Loring
<burlen.lor...@gmail.com <mailto:burlen.lor...@gmail.com>> wrote:
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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/| Aashish Chaudhary
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