[Paraview] visualize atomistic data: memory hawk, crashing

[Steffen Brinckmann]

Hey,
I have some (1e6) atomistic data in paraview (nice xyz filesupport). 
Visualizing it as points is possible and very fast, but squares don't 
look too hot as atoms. So I tried to switch to 3D Glyphs, and that is 
when the problem begins.

The memory consumption increases to a point where I run out of memory, 
when I use Filter->3D Glyphs and then choose "unmask" to see all atoms. 
When I choose the representation style (without Filter) as 3D Glyphs, 
the CPU usage increases and the software locks down.

On the other hand, there is software (Ovito, Tecplot) (which I don't 
want to use for some reason) that can display this amount of data in a 
1-4 seconds.

Is there some hint that some of the paraview users can give me? Did I 
overlook something pretty obvious?

Thanks for the help,
Steffen