RES: RES: RES: [Paraview]Ensight Gold file format -> multiple time steps & constant grid

Thu Nov 23 08:16:45 EST 2006

I see... It's really a trouble. I frequently have the same problem. A modest
parallel running (let's say, 8 processors) with 1000 time steps and 3
classes of results would give me 8 x 1,000 x 3 = 24,000 files (and it's a
very modest run...). Even the operating system get lost with such number of
files within a directory. Unfortunately, Ensight Gold case file doesn't
support subdirectories (only server-of-server can do it).

Regarding the single file, I haven't used this format yet and I wouldn't bet
that PV is able to deal with single files since, I guess, it's not a common
way to use Ensight Gold format. In your case, I'd write a small program to
exchange data from single to multiple format (and vice-versa) or, as a last
chance, try another format. By the way, I'm not able to find any other
format, supported by PV, easier to implement and use than Ensight's.

Regards

Renato.

-----Mensagem original-----
De: Michael Geppert [mailto:Michael.Geppert at web.de] 
Enviada em: quinta-feira, 23 de novembro de 2006 10:45
Para: rnelias
Assunto: Re: RES: RES: [Paraview]Ensight Gold file format -> multiple time
steps & constant grid

The problem is exactly the huge amount of files. We got 400 or more time
steps, 8 classes of results, its just getting to much for comfortable
handling. So we decided to try the single file format, if there are no weak
points, and we can use the same functions of PV. But if it turns out that we
have to waste so much memory, multiple file format may be better. So do you
know if its possible to write the data in single file format, the way I want
to? :)

Best Regards,

Michael 

> -----Ursprüngliche Nachricht-----
> Von: "rnelias" <rnelias at nacad.ufrj.br>
> Gesendet: 23.11.06 13:14:05
> An: "'Michael Geppert'" <Michael.Geppert at web.de>
> CC: <paraview at paraview.org>
> Betreff: RES: RES: [Paraview]Ensight Gold file format -> multiple time 
> steps & constant grid

> 
> I'm just curious... Why have you chosen the single file format? You 
> could write 1 geometry file an 1 result file per time step. PV can 
> deal with multiple file format without any major problem (even for
parallel sessions).
> Moreover, It's a good way to visualize your result while your program 
> is still running. The problem is that you can easily produce a huge 
> number of small files.
> 
> Regards
> 
> Renato.
> 
> -----Mensagem original-----
> De: Michael Geppert [mailto:Michael.Geppert at web.de] Enviada em: 
> quinta-feira, 23 de novembro de 2006 09:53
> Para: Renato N. Elias
> Assunto: Re: RES: [Paraview]Ensight Gold file format -> multiple time 
> steps & constant grid
> 
> Hi Renato,
> 
> thanks for your help so far! I've read the Ensight UserManual,  the 
> problem i described appears if I try to write in transient single file
format.
> According to the UserManuel I have to wrap my .geo file between "BEGIN 
> TIME STEP" and "END TIME STEP" wrappers. So is a constant grid 
> together with time-step values only possible with wildcards?
> 
> Further more I got a problem with paraview and partial variable values.
> Ens_checker82 claims that my file content is correct, but paraview 
> always freezes after the first time step.
> 
> Regards,
> 
> Michael Geppert
> 
> 
> 
> > -----Ursprüngliche Nachricht-----
> > Von: "Renato N. Elias" <rnelias at nacad.ufrj.br>
> > Gesendet: 22.11.06 01:07:32
> > An: "'Michael Geppert'" <Michael.Geppert at web.de>
> > CC: <paraview at paraview.org>
> > Betreff: RES: [Paraview]Ensight Gold file format -> multiple time 
> > steps & constant grid
> 
> 
> >  
> > 
> > Hi Michael,
> > 
> >  
> > 
> > I guess, you're missing something... Ensight Gold format does not 
> > need one
> geometry file per time step. Have you seen the example Ensight files 
> supplied with the Paraview distribution? What about the Ensight's user 
> guide?
> > 
> >  
> > 
> > The structure of your case file should look like this:
> > 
> >  
> > 
> > FORMAT
> > type: ensight gold
> > 
> >  
> > 
> > GEOMETRY
> > model: dam_1.geo00
> > 
> >  
> > 
> > VARIABLE
> > 
> >  
> > 
> > scalar per node:           pressure      dam_1_pres_****.scl00
> > vector per node:           velocity      dam_1_velo_****.vec00
> > 
> > TIME            
> > time set: 1     
> > number of steps:  32
> > filename start number: 0
> > filename increment: 1   
> > time values: 
> >      0.00000000
> >      0.01000000
> > ...
> > 
> > ...
> > 
> >  
> > 
> > The geometry and results format you can follow the examples of the 
> > Ensight's user guide. Moreover, I've put some Fortran routines that 
> > I use to write my files available to download at 
> > http://www.nacad.ufrj.br/~rnelias/paraview/EnsightRoutines.zip
> > 
> >  
> > 
> > I hope it helps you.
> > 
> >  
> > 
> > Regards
> > 
> >  
> > 
> > Renato N. Elias
> > 
> > =============================
> > 
> > High Performance Computing Center
> > 
> > Federal University of Rio de Janeiro
> > 
> > Rio de Janeiro, RJ - Brazil
> > 
> >  
> > 
> > 
> > 
> > 
> > -----------------------------------------------------------------
> > De: paraview-bounces+rnelias=nacad.ufrj.br at paraview.org
> > [mailto:paraview-bounces+rnelias=nacad.ufrj.br at paraview.org] Em nome 
> > de Michael Geppert Enviada em: terça-feira, 21 de novembro de 2006
> > 16:09
> > Para: paraview at paraview.org
> > Assunto: [Paraview]Ensight Gold file format -> multiple time steps & 
> > constant grid
> > 
> > 
> > 
> >  
> >  
> >  
> >  
> >  
> >  
> >  
> > Hi,
> > at the moment I'm trying to write data in the EnSight Gold format. 
> > 
> > I want to write some scalar data (velocity, pressure..., multiple 
> > time
> steps) on a NOT changing grid. Is it possible to write the grid only 
> once in the .geo file? If i try that, paraview instantly crashes. 
> Theres no problem, writing the same grid n-times, wrapped in "BEGIN TIME
STEP", "END TIME STEP"
> wrappers, but that of course uses a lot of disk space.
> > 
> > Thanks for your help. 
> > 
> > 
> > 
> > 
> >  
> >  
> >  
> >  
> >  "Ein Herz für Kinder" - Ihre Spende hilft! Aktion:
> www.deutschlandsegelt.de   
> > Unser Dankeschön: Ihr Name auf dem Segel der 1. deutschen America's
> Cup-Yacht!  
> > 
> 
> 
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