[Paraview] Paraview performance

[Berk Geveci]

One way of pinpointing  the bottleneck is to look at Window -> Timer Log. I
am guessing IO is the problem here. However, clip filter might be also
taking a long time with 4.5 million cells on 1 processor.  I recommend
switching to at least binary. A 4.5 Gb ascii file is ridiculous. A format
that supports compression like the VTK-XML formats might also help. Also,
are you using the cut or clip filter?

-berk

On 10/16/06, Alberto Fernandez <alberto at cognitdesign.com> wrote:
>
> Even for a simple solid rendering. I'm trying to open a case with 4.5
> million and its been working for 6 hours now. Is it normal to have that
> kind of performance if the data is in ascii? Granted the geo file is big
> (4Gb) but I thought it could be handled.
> I'm going to check out HAVS. Thanks for the suggestion.
>
> Claudio Silva escribió:
> > What kind of rendering are you doing?
> >
> > For volume rendering (and isosurface generation), HAVS can render up
> > to 6 million tets/sec on the latest graphics hardware (single machine).
> >
> > HAVS has recently been added to Paraview, and is also available stand
> > alone:
> >
> > havs.sourceforge.net
> >
> >
> > On Oct 15, 2006, at 11:06 AM, Alberto Fernandez wrote:
> >
> >> I have a question regarding paraview performance. I'm using paraview
> >> to visualize CFD results. The results are written in ensight format
> >> as ascii. I have been doing some work on a model with a unstructured
> >> mesh of about 1.5 million cells. Using simply a clip filter cutting
> >> with a scalar takes a lot of time. It is not big for just a frame but
> >> we are calculating 20 time steps. If we want to calculate that
> >> cliping (to find a free surface) to create an animation it takes
> >> about 15 or 20 minutes. The machine is an AMD athlon with  4 GB.
> >> We are interested in processing a calculation with around 5 million
> >> cells. We have tried and it takes hours.
> >> Is there a way of improving this performance through some settings or
> >> similar?
> >> Does having the results written in ascii (it takes quite some room)
> >> have some effect on performance?
> >>
> >> --Alberto Fernández
> >> alberto at cognitdesign.com
> >>
> >> Cognit Design
> >> C/Arquitecte Sert, 31 Local 3    Vila Olímpica
> >> 08005  Barcelona
> >> Telf: 93 532 29 94
> >> Fax: 93 531 59 42
> >>
> >> _______________________________________________
> >> ParaView mailing list
> >> ParaView at paraview.org
> >> http://www.paraview.org/mailman/listinfo/paraview
> >
>
> --
> Alberto Fernández
> alberto at cognitdesign.com
>
> Cognit Design
> C/Arquitecte Sert, 31 Local 3
> Vila Olímpica
> 08005  Barcelona
> Telf: 93 532 29 94
> Fax: 93 531 59 42
>
> _______________________________________________
> ParaView mailing list
> ParaView at paraview.org
> http://www.paraview.org/mailman/listinfo/paraview
>
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