[Paraview] PV parallel mode loading

[Fred Fred]

> From: dave.demarle at kitware.com
> Date: Thu, 25 Mar 2010 14:10:37 -0400
> Subject: Re: [Paraview] PV parallel mode loading
> To: stan1313 at hotmail.fr
> CC: paraview at paraview.org
> 
> By -no 32 do you mean you are starting a 32 process MPI job?

Yes

> If so, and you can load the dataset on your personal computer in one
> process, try -no 1. Extra processes add overhead. If the reader isn't

Ok I do know that, I am not a programming newbie! lol
But the loading time is about to 32 x the loading time on a single process, and this is not a normal behaviour.
the overhead you are talking about should just be due to the fact there is a need to establish proper connections between data subsets so as to be able to properly track a streamline integration for instance, but this should not lead to such an overhead in loading the data I think.

> a parallel capable one, for example, you are temporarily loading
> 32*133 million points.

This is a .pvd file, might there be a problem?

> David E DeMarle
> Kitware, Inc.
> R&D Engineer
> 28 Corporate Drive
> Clifton Park, NY 12065-8662
> Phone: 518-371-3971 x109
> 
> 
> 
> On Thu, Mar 25, 2010 at 2:01 PM, Fred Fred <stan1313 at hotmail.fr> wrote:
> > I have a 133 millions points and 134 millions cells regular grid dataset,
> > which I can load in a few seconds on my personnal computer.
> > Now I launch PV in parallel with -no 32 on my single computer and ... I have
> > to wait about 4 minutes before I can clic on the Apply button, and once I
> > have done it I have to wait additional 3 minutes to have the dataset loaded!
> > Any explaination?
> >
> >
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