[Paraview] Paraview crashing when clipping an openfoam solution

[Joachim Pouderoux]

Carlos,

For information, here is the merge request that address the wedge issue:
  https://gitlab.kitware.com/vtk/vtk/merge_requests/4059
This is a simple patch for now, better solution will come.

Joachim

*Joachim Pouderoux*, PhD

*Technical Expert - Scientific Computing Team*
*Kitware SAS <http://www.kitware.fr>*


2018-03-26 15:04 GMT-04:00 Carlos E Manglano-Villamarin <
carlosemanglanov at gmail.com>:

> Thanks Joachim,
>
> I'll give it a go!
>
> C.
>
> 2018-03-26 20:36 GMT+02:00 Joachim Pouderoux <
> joachim.pouderoux at kitware.com>:
>
>> Carlos,
>>
>> OpenFOAM can produce cells with non planar faces which is not handled by
>> VTK/ParaView. Moreover it appears that current reader implementation can
>> also produce incorrect cells when reading wedge cells.
>> Thanks to a recent rewriting of the polydron clipping algorithm, the
>> clipping/slicing of polyhedron should no more lead to crashes. However,the
>> problems
>> of non planar faces might produce some holes in the result.
>> We are currently working on a patch to better handle this case in the
>> reader.
>> If you want to try the new polyhedron  clipping algorithm, you will have
>> to use ParaView >= 5.5 RC1.
>>
>> Best regards,
>> Joachim
>>
>>
>> *Joachim Pouderoux*, PhD
>>
>> *Technical Expert - Scientific Computing Team*
>> *Kitware SAS <http://www.kitware.fr>*
>>
>>
>> 2018-03-26 14:29 GMT-04:00 Carlos E Manglano-Villamarin <
>> carlosemanglanov at gmail.com>:
>>
>>> It's me again, I'm sorry,
>>>
>>> Problem NOT solved!!! ... Hardware looks ok, software and system
>>> handling memory looks good too.
>>>
>>> ParaView shuts down if I try to generate a clip with the "VTK
>>> Polyhedron" option selected, before and after clipping ...
>>>
>>> possible bug??
>>>
>>> C.
>>>
>>> 2018-03-26 16:51 GMT+02:00 Shawn Waldon <shawn.waldon at kitware.com>:
>>>
>>>> Hi Carlos,
>>>>
>>>> That error message means that an exception was thrown from a Qt event
>>>> handler.  The message about reimplementing QApplication::notify() is just
>>>> to tell you how to catch the exception if you wanted to.  The real problem
>>>> is the exception.
>>>>
>>>> A std::bad_alloc exception happens when the program tries to allocate
>>>> memory and fails.  So you need to figure out why you are running out of
>>>> memory (that is the most likely cause of the error).
>>>>
>>>> HTH,
>>>> Shawn
>>>>
>>>> On Mon, Mar 26, 2018 at 10:47 AM, Carlos E Manglano-Villamarin <
>>>> carlosemanglanov at gmail.com> wrote:
>>>>
>>>>> Hi everyone!
>>>>>
>>>>> When I postprocess some simulations, less than 900,000 cells, from
>>>>> openfoam, either opening paraview directly or using the parafoam tool, the
>>>>> program crashes giving me the following error message:
>>>>>
>>>>> I/O    : uncollated
>>>>> terminate called after throwing an instance of 'std::bad_alloc'
>>>>>   what():  std::bad_alloc
>>>>> Qt has caught an exception thrown from an event handler. Throwing
>>>>> exceptions from an event handler is not supported in Qt. You must
>>>>> reimplement QApplication::notify() and catch all exceptions there.
>>>>>
>>>>> My OS is Ubuntu 16.04, freshly installed. I was getting the same error
>>>>> with Ubuntu 17.10 which I had installed until last night.
>>>>>
>>>>> I am looking for info about "reimplementing QApplication" with no luck.
>>>>>
>>>>> Any suggestions, please?
>>>>> Carlos
>>>>>
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>>>
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>>
>
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