Hi Samuel,
Thanks for the suggestions and the example file.  I'll hang on to that example 
in case I ever need the multi-part capability!

The potential "mesh sharing" capability for time steps was mentioned in an old 
mail list post that I ran across when Googling for this feature:
https://cmake.org/pipermail/paraview/2008-February/007118.html
However, perhaps it was done on a branch of ParaView and maybe not ever 
incorporated into the mainline distributions.

It does mention Ensight Gold format in that mail list thread, which does at 
least not have any library dependencies.  I'll think about using that, though 
I'd have to bite the bullet and start from scratch.  The vtu/pvtu format is 
easier right now because I already have code that writes those out.

Thanks,
Sean

________________________________
From: Samuel Key [samuel...@bresnan.net]
Sent: Sunday, April 03, 2016 1:03 PM
To: Ziegeler, Sean @ EngilityCorp; Simons, Don @ EngilityCorp
Subject: Re: [Paraview] PVD for Sharing Mesh among Time Steps

Sean,

To my knowledge, *.vtu files all have "a fresh copy" of the nodal point 
coordinates and connectivity. Hence, when you have time steps (or load steps) 
you get a lot of files and if the mesh is large (for example, 100x100x100). the 
files are large. Up to know, the only simulation results format of which I am 
aware that has a one-time (t=0.0) coordinate and connectivity model data is the 
ExodusII format.

It is possible to have a single *.pvd file that references both the "parts" and 
"time steps." I have attached an example.

Hope this helps,

Samuel Key
FMA Development, LLC
1005 39th Ave NE
Great Falls, Montana 59404

On 3/30/2016 6:09 PM, 
sean.ziege...@engilitycorp.com<mailto:sean.ziege...@engilitycorp.com> wrote:
Hi all,
A few old posts indicate that the PVD format could be used to specify a single 
mesh (unstructured, in my case) for all time steps without having to repeat the 
mesh in every vtu/pvtu file.  I can't seem to find any docs or examples on that 
approach.  I can't seem to generate it from ParaView either.  Does anyone have 
an example of such a PVD file?

I'll look in the writer source code if I have to, but if an example is readily 
available, it sure would save me some time.  I know there are other output 
options too, but I'd like to stick with one that is straightforward and has no 
dependencies (HDF5, Silo, etc.).

Thanks,
Sean




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