[Paraview-developers] Reading multiple files in parallel

[sumeet kumar]

Thanks Kenneth, for you help.

I get the vtkAlgorithm::CAN_HANDLE_PIECE_REQUEST(), set 1 part.

But, what to do next.

How can i get the piece no, so that i can update the data for it.

vtkmXMLPUnstructuredGridDataReader is not doing me a great help.


Sumeet

On Mon, Aug 15, 2016 at 12:57 PM, Moreland, Kenneth <kmorel at sandia.gov>
wrote:

> I think the key you are looking for is vtkAlgorithm::CAN_HANDLE_PIECE_REQUEST(),
> which you want to set to 1 to signify that you can provide multiple pieces.
> You might want to look at vtkmXMLPUnstructuredGridDataReader for an
> example.
>
>
>
> If I remember correctly, this has recently been changed in VTK. It used to
> be that you would give the number of pieces you supported, but that
> functionality was not useful in practice and consequently readers reported
> that they could produce any number of pieces in order to be useful. Thus,
> the behavior was change to allow readers simply to report whether or not
> they support multiple pieces. Berk can probably provide more information.
>
>
>
> -Ken
>
>
>
> *From:* Paraview-developers [mailto:paraview-developers-
> bounces at paraview.org] *On Behalf Of *sumeet kumar
> *Sent:* Monday, August 15, 2016 12:58 PM
> *To:* ParaView Developers <paraview-developers at paraview.org>
> *Subject:* [EXTERNAL] [Paraview-developers] Reading multiple files in
> parallel
>
>
>
> Hello all,
>
> I have a number of files which contains information about pieces of
> unstructured mesh. For example :-
>
> t_2.h5.01.feioutput
> t_2.h5.03.feioutput
> t_2.h5.04.feioutput
> t_2.h5.05.feioutput
> t_2.h5.06.feioutput
> t_2.h5.07.feioutput
> t_2.h5.08.feioutput
> t_2.h5.09.feioutput
> t_2.h5.feioutput
>
> My reader can read each file individually but I want to read them all in
> parallel so that I can visualize the whole model. I looked at the
> http://www.paraview.org/Wiki/Writing_ParaView_Readers and followed the
> steps for unstructured mesh.
>
> When I try to set the number of pieces in Request Information function as
> this
>
> vtkInformation* Node_Mesh = outVec->GetInformationObject(0);
> Node_Mesh->Set(vtkStreamingDemandDrivenPipeli
> ne::MAXIMUM_NUMBER_OF_PIECES(), 10);
>
>
>
> I get the following error
>
> error: ‘MAXIMUM_NUMBER_OF_PIECES’ is not a member of ‘
> vtkStreamingDemandDrivenPipeline’
>   Node_Mesh->Set(vtkStreamingDemandDrivenPipeli
> ne::MAXIMUM_NUMBER_OF_PIECES(), 10);
>
>
>
> Also, it would be highly appreciated if anyone could show/(send me link)
> me to a sample example.
>
> Regards
>
> --
>
> [image: Image removed by sender.]
>
> Sumeet Kumar Sinha
>
> Graduate Student
>
> Phone: (+1)  <%28%2B91%29%209910516219>5306018271
>
> Website : http://www.sumeetksinha.com/
>



-- 

Sumeet Kumar Sinha
Graduate Student
Phone: (+1)  <%28%2B91%29%209910516219>5306018271
Website : http://www.sumeetksinha.com/
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