[Paraview] Paraview/pvserver running very slow

[Takuya OSHIMA]

Florian,

Is there any reason you prefer to load such a big case with
reconstructed?  The OpenFOAM reader (and subsequent filters) runs in
parallel only for decomposed cases. For reconstructed cases the reader
loads everything in process 0.

Also, are you sure you built ParaView with compiler optimizations
(CMAKE_BUILD_TYPE = Release)?

Takuya

Takuya OSHIMA, Ph.D.
Faculty of Engineering, Niigata University
8050 Ikarashi-Ninocho, Nishi-ku, Niigata, 950-2181, JAPAN


From: Florian Lindner <mailinglists at xgm.de>
Subject: [Paraview] Paraview/pvserver running very slow
Date: Mon, 28 Feb 2011 13:15:15 +0100

> 
> Hello,
> 
> I’m running paraview 3.8.1 under linux using 8 cpus loading a 
> reconstructed openfoam case with about 13GB per timestep (we have just 
> two time steps, start 0 and result 1). The machine on which pvserver 
> runs has 16 cpus and 70GB RAM, but pvserver uses just a small fraction 
> of the ram.
> 
> Loading the case takes about 5 minutes (which would be fine, if 
> subsequent operations were running more smoothly).
> Adding a slice takes another couple of minutes. Rotating (using the 
> mouse) takes about 10sec for one frame to be rendered (the slice is 
> constant colored). Computing 100 streamlines from a line source takes 
> about 10 minutes, moving the view is fluent. As soon as the slice is 
> displayed moving the view becomes extremely slow again.
> 
> I have also tried to convert the mesh to VTK which does not really 
> change something. (Resulting VTK is of 37GB size).
> 
> At this state interactive work is not possible. Since the dataset is 
> not extraordinary large (I think), I suspect a problem with our MPI 
> configuration.
> 
> Offscreen rendering works (I think), we have 8 windows "Visualization 
> Toolkit – OpenGL" that opens on the client (though the windows remain 
> black).
> 
> MPI implementation is SGI MPI. I have also tried to compile openmpi 
> 1.4.3 and pvserver from source, yet it’s still very slow. The client 
> used is the x64 build from the paraview homepage.
> 
> MPI setup is for local use only.
> 
> I am grateful for any help…
> 
> Florian
> 
> _______________________________________________
> Powered by www.kitware.com
> 
> Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html
> 
> Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView
> 
> Follow this link to subscribe/unsubscribe:
> http://www.paraview.org/mailman/listinfo/paraview