OK... I found that beast with that debugging option (I actually didn't
know about)

I collected an Isosurface and a Contour Plot (from volumetric data) 
together with the Collect Module.
The output was then fed into a SHADE Module. When shading is turned on
the SHADE Module crashes and when shading is turned off, it will NOT
chrash 
(but who will need unshaded isosurfaces ,-)). I can live without the
Shade Module
after an Isosurface, and my problem is solved now, but it is still a
miracle
for me why it chrashed most of the time, and not always...

Anyway

Thanks

Alex


> 
> It would be a good idea, first, to make sure which module is segfaulting.
> You can turn on debugging in the Message window, and a message will be
> printed when each module starts.  The last is the one thats dying.  The
> most likely problem then is bad data - you can insert the Verify module in
> front of the offending module and it'll do some consistency checking on the
> data; that may reveal your problem.
> 
> I'm curious - can you tell us more about the data?  Contour plots are
> appropriate on surface data, whereas isosurfaces are appropriate in
> volumetric data.
> 
> Greg
> 
> Tobias Weissbach <[EMAIL PROTECTED]>@opendx.watson.ibm.com on
> 07/17/2001 09:09:04 AM
> 
> Please respond to [email protected]
> 
> Sent by:  [EMAIL PROTECTED]
> 
> To:   [email protected]
> cc:
> Subject:  Re: [opendx-users] Signal 11 caught
> 
> I still have this problem even with 1.5 GB of RAM.
> Any Ideas, what the Problem could be ??
> 
> Thanks
> 
> Alex
> 
> >
> > Hi
> >
> > I am trying to visualize isosurfaces and contour plots of a 3D data set.
> > Displaying the contour plots works just fine, but when I use the
> > IsoSurface Modul,
> > DX loose the connection to the server and I get a message "Signal 11
> > caught".
> >
> > I guess that this is a memory problem. Will more memory fix this problem
> > or is
> > it a bug in the Isosurface Modul.
> >
> > Any ideas ??
> >
> > I am using OpenDX 4.1.3 on Linux box (SuSE 7.1) with 768 MB RAM
> >
> > Thanks for Help.
> >
> > Alex

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