[Paraview] Problem with Pixie files: build 3.14.1 and 3.98.0

[Robert Maynard]

Hi Claudio,

I will be looking at this issue and hope to have a fix in for the next
release candiate.


On Mon, Nov 12, 2012 at 6:06 AM, Claudio Zanni <zanni at oato.inaf.it> wrote:

>  Dear Utkarsh,
>
>    thanks for trying to look into it.
>
>    These are some datasets distributed with VisIt to test the Pixie output
>
>    blockedhttp://
> portal.nersc.gov/svn/visit/trunk/data/pixie_test_data.tar.gz
>
>    As you will notice Paraview 3.14 or newer can not open the file
> pixie_expressions.h5,
>    while it correctly opens all other files (pixie3d3.h5, ...), where the
> only difference
>    between the files is the number of timesteps contained in each of them.
>
>    The following files are written by the code that we develop (
> http://plutocode.ph.unito.it/):
>
>    blockedhttps://dl.dropbox.com/u/18683007/data.2tstep.h5
>    blockedhttps://dl.dropbox.com/u/18683007/data.1tstep.h5
>
>     Paraview 3.14 or newer can open data.2tstep.h5 but hangs when trying
> to open data.1tstep.h5.
>     These files contain 2 and 1 timesteps respectively, but their
> structure is exactly the same
>     (groups, attributes, datasets, etc etc ...)
>
>     Previous versions of Paraview (down to 3.10) and VisIt (up to the
> current release 2.5.2) can
>     correctly open all the files. Therefore I suspect that the problem is
> somewhere in the bridge
>     from VisIt to Paraview of the two most recent releases.
>     I have always used the pre-compiled binaries for Mac OS X 64-bit Intel.
>
>     Thanks again,
>     Claudio
>
>
> On 11/12/12 12:13 AM, Utkarsh Ayachit wrote:
>
> Claudio,
>
>  Do you have any sample dataset that I can use to test this/the fix?
>
>  Thanks,
> Utkarsh
>
>
> On Sun, Nov 11, 2012 at 4:07 PM, Utkarsh Ayachit <
> utkarsh.ayachit at kitware.com> wrote:
>
>> Claudio,
>>
>>  I'll take a look at get back.
>>
>>  Utkarsh
>>
>>
>> On Fri, Nov 9, 2012 at 9:54 AM, Claudio Zanni <zanni at oato.inaf.it> wrote:
>>
>>> I already had this problem with Paraview 3.14.1 but I received no answer
>>> to a first email,
>>> so I tried to investigate on my own since the problem is still present
>>> in release 3.98.0.
>>>
>>> Paraview can not open a Pixie file (it's a HDF5 format included through
>>> the VisIt Database
>>> Bridge) when the file includes one timestep only: Paraview just hangs
>>> indefinitely.
>>> Everything works fine when multiple timesteps are contained in the file.
>>>
>>> I suspect that the problem is connected to lines 618-634 in
>>> Utilities/VisItBridge/AvtAlgorithms/vtkAvtFileFormatAlgorithm.cxx:
>>>
>>>    //in some case the times and cycles have all zero values.
>>>>   //This is caused by a file reader that generates the time value
>>>>   //once the reader moves to that timestep.
>>>>   //That kind of behaviour is not possible currently in ParaView.
>>>> Instead
>>>>   //we will force the reader to generate the time values for each
>>>> timestep
>>>>   //by cycling through everytime step but not requesting any data.
>>>>   if(hasTime && timesteps[0] == timesteps[timesteps.size()-1])
>>>>     {
>>>>     //we have hit a timestep range that needs to be cycled
>>>>     for(int i=0; i < timesteps.size();++i)
>>>>       {
>>>>       this->ActivateTimestep(i);
>>>>       //Nek and other readers don't update the time info intill you
>>>>       //call gettimes.
>>>>       this->AvtFile->FormatGetTimes(timesteps);
>>>>       }
>>>>     }
>>>>
>>> The condition is true not only when the same value (0?) has been
>>> assigned to all
>>> the timesteps but also when there is one timestep only (timesteps.size()
>>> = 1).
>>> Besides these lines were not present in Paraview 3.10/3.12 and these
>>> releases
>>> were able to open Pixie files containing one timestep only.
>>>
>>> Is it possible to fix this problem? That would be highly appreciated.
>>> Regards,
>>> Claudio
>>>
>>> --
>>> Claudio Zanni
>>> INAF - Osservatorio Astronomico di Torino
>>> Via Osservatorio 20
>>> 10025 Pino Torinese (TO), Italy
>>> tel. +39 011 8101907 <%2B39%20011%208101907>
>>> fax  +39 011 8101930 <%2B39%20011%208101930>
>>>
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>>
>>
>
>
> --
> Claudio Zanni
> INAF - Osservatorio Astronomico di Torino
> Via Osservatorio 20
> 10025 Pino Torinese (TO), Italy
> tel. +39 011 8101907
> fax  +39 011 8101930
>
>
> _______________________________________________
> 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
>
>


-- 
Robert Maynard
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