[vtkusers] Performance with NVidia GForce

[Lisa Avila]

Hello Alex,

I would not use GoFly to evaluate performance. The version available on the 
web is fairly old (before many performance improvements were made to VTK) 
and is not focused on high performance visualization of a small number of 
models with a large number of polygons but rather a large number of models 
with a small number of polygons in each.

There is a sphere benchmark test (http://www.barre.nom.fr/vtk/bench.html) 
but I am not sure if that is up-to-date any more. We have run performance 
evaluations and have found VTK's performance with one actor with a large 
number of polygons to be comparable to raw OpenGL. If you create many 
separate actors/mappers, the performance obviously degrades due to overhead 
and state changes.

Lisa


At 04:27 PM 6/4/2002, Alexander Trum wrote:
>Hello
>
>We are now evaluating Kitware's GoFly on following machine:
>
>AMD Athlon 800 MHz
>640 MB RAM
>Windows NT 4.0
>NVidia GForce4 MX440 64MB DDR
>NVidia Treiber V28.80
>
>The ViewPerf tests on this machine can render round about 3 millions of
>triangles per second.
>With GoFly only 0.6 millions of triangles per second are rendered.
>
>As far as i know GoFly based on VTK. Does VTK use software rendering
>instead of hardware rendering?
>Or is this a problem of Tcl/Tk?
>
>Thanks a lot in advance,
>   Alex