[Paraview] seg fault paraview 3.0.2

[Moreland, Kenneth]

Sreejith,

I figured out the problem.  Your data is written inefficiently.  Each
cell points to its own set of points.  Instead, cells should be sharing
points.  Because no cells are sharing points, ParaView thinks that every
face of every cell is an external face.  The first thing that ParaView
does is to extract all the external faces to render them, and this
bloats the memory significantly.  After rendering the memory consumption
is near the 2 GB limit for 32 bit applications, and ParaView is crashing
because it cannot allocate memory.

Change your program to write out data so that cells share points and
everything should work fine.

-Ken

> -----Original Message-----
> From: Sreejith Pulloor [mailto:sreejithpk at gmail.com]
> Sent: Tuesday, November 06, 2007 2:28 AM
> To: Moreland, Kenneth
> Subject: Re: [Paraview] seg fault paraview 3.0.2
> 
> Dear Sir,
> 
> Here is a vtk xml unstructured grid binary  appended raw format file.
> I can really manage the file with paraview 2.6.2 version. But
> unfortunately wiht paraview 3.0.1 and 3.0.2 stable version (linux),
> the slice and clip things are not working. sometimes it exit with
> segfault , sometimes not but cannot see the slice or clip. that
> produced.
> what could be the problem. please find the file here:
> 
> http://hal.iwr.uni-heidelberg.de/~sreejith/flow3d.vtu   (rather big
file
> 186 MB)
> 
> please note, i dont have this problem with paraview 2.6.2. working
> great with that.
> 
> thank you
> Sreejith
> 
> On Sep 26, 2007 4:45 PM, Moreland, Kenneth <kmorel at sandia.gov> wrote:
> > I cannot replicate your problem.  Can you give some more details on
what
> > you are doing?
> >
> > Note that when you apply the clip filter, it also tetrahedralizes
your
> > data and converts it into an unstructured grid.  This can
dramatically
> > increase the memory footprint (possibly by 2 orders of magnitude if
the
> > original data only had one array on it).  If you are applying a clip
to
> > a 3D array of over a million points total, you may simply be running
out
> > of memory.
> >
> > Note that this is not an issue for the slice filter.
> >
> > -Ken
> >
> >
> > > -----Original Message-----
> > > From: paraview-bounces+kmorel=sandia.gov at paraview.org
> > [mailto:paraview-
> > > bounces+kmorel=sandia.gov at paraview.org] On Behalf Of Sreejith
Pulloor
> > > Sent: Wednesday, September 26, 2007 9:29 AM
> > > To: paraview at paraview.org
> > > Subject: [Paraview] seg fault paraview 3.0.2
> > >
> > > Hello,
> > > very often when I try to clip or slice a 3d rectangular geometry
data,
> > > the paraview (3.0.2 stable unix version) get exited.
> > > /bin/paraviewstable: line 2: 17123 Segmentation fault
> > > $HOME/paraview-3.0.2-stable/bin/paraview
> > > any help
> > > thank you
> > > _______________________________________________
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> >
> >
> >