[Paraview] Ensight

[Terry Jordan]

1) What are you animating? Single Isovalue for multiple timesteps?  Multiple
isovalues?

Single IsoValue for multiple timesteps.


2) What data type are you using?  Native VTK, Native Ensight, or a 3rd
party.  Each of the first two give a somewhat unfair advantage to one
product, if you're going for a truly even comparison.

3rd party cfd data.  We have written readers for paraview and ensight for 
this data.

3) What data format are you using? Structured, unstructured?  2d, 3d?
For ensight it is structured, and in paraview we are using unstructured.

4) What pipeline/viz tools are you using?
I'm not sure what you are asking here.  But I will guess you mean vtk 
pipeline in paraview.
In paraview it's Reader->CellToPoint->Contour.
and in ensight it is just Reader->IsoSurface.

5) What exactly are you counting time for?  Data load, or just computation?
I bet you're just timing the actual time to generate all the isosurfaces,
and Ensight gets a big win because it preloads all the data at once where
Paraview loads it as it goes.
We are counting the time it takes to generate all of the isosurfaces.

Another problem could be that the data is taken as a structured grid in 
ensight and an unstructured grid in paraview.

----Original Message Follows----
From: "Randall Hand" <randall.hand at gmail.com>
To: "Terry Jordan" <tejj at hotmail.com>
CC: paraview at paraview.org
Subject: Re: [Paraview] Ensight
Date: Tue, 21 Mar 2006 10:21:08 -0600

Lots of information missing here.
1) What are you animating? Single Isovalue for multiple timesteps?  Multiple
isovalues?
2) What data type are you using?  Native VTK, Native Ensight, or a 3rd
party.  Each of the first two give a somewhat unfair advantage to one
product, if you're going for a truly even comparison.
3) What data format are you using? Structured, unstructured?  2d, 3d?
4) What pipeline/viz tools are you using?
5) What exactly are you counting time for?  Data load, or just computation?
I bet you're just timing the actual time to generate all the isosurfaces,
and Ensight gets a big win because it preloads all the data at once where
Paraview loads it as it goes.


On 3/21/06, Terry Jordan <tejj at hotmail.com> wrote:
 >
 > We are running some test of the performance of ensight versus
 > paraview.  In
 > the test we use the same data set and create an iso surface
 > (contour).  Then
 > we animate the transient data set.  We are seeing about 1 order of
 > magnitude
 > increase in performance over paraview (about 2.5 mins to 29 mins).  Does
 > anyone know if ensight is doing something to speed up the performance 
such
 > as decimation or are their algorithms that much faster?
 >
 > Thanks in advance.
 >
 >
 > _______________________________________________
 > ParaView mailing list
 > ParaView at paraview.org
 > http://www.paraview.org/mailman/listinfo/paraview
 >



--
Randall Hand
Visualization Scientist,
ERDC-MSRC Vicksburg, MS
Homepage: http://www.yeraze.com


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