[Paraview] ensight and parallel paraview

Berk Geveci berk.geveci at kitware.com
Wed Aug 11 16:29:17 EDT 2010


The CEA guys folks developed this version so they'd know best but a
quick look at the source code tells me that each rank reads a portion
of the file. There seems to be logic to figure out offsets for each
rank such that they can start reading from there.

-berk

On Wed, Aug 11, 2010 at 6:59 AM, Ricardo Reis <rreis at aero.ist.utl.pt> wrote:
> On Tue, 10 Aug 2010, Robert Maynard wrote:
>
>> Neither, the reader presumes that each node has access to every file.
>
> ok... but do they need to read the full file? I mean, if I have a 3D vector
> field, each component is a 5 Gb file. I'm opening this in a cluster, all
> nodes see the files. Does each node load the 3 files entirely and then
> distribute among themselves or it just looks for its part of the file?
>
> Sorry if the question is dumb... but is the workflow something like:
>
>  - read geometry
>  - partition/distribute geometry/mesh
>  - only read relevant data to each node from files
>
>  ?
>
>  best regards,
>
>  Ricardo Reis
>
>  'Non Serviam'
>
>  PhD candidate @ Lasef
>  Computational Fluid Dynamics, High Performance Computing, Turbulence
>  http://www.lasef.ist.utl.pt
>
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