[Paraview] Why is pvbatch displaying images?

[David E DeMarle]

See the cmake config settings for pure offscreen rendering configuration of
pvserver in:
http://paraview.org/Wiki/ParaView/Users_Guide/Parallel_Rendering#Offscreen_Software_Rendering_via_OSMesa

David E DeMarle
Kitware, Inc.
R&D Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4909


On Wed, Mar 6, 2013 at 12:40 AM, Pradeep Jha <
pradeep at ccs.engg.nagoya-u.ac.jp> wrote:

> I installed PV with OSMesa on a linux supercomputer. When I am running
> "pvbatch --use-offscreen-rendering script_file.py", I get the following
> error:
>
> ------------------------------------------------------------------------------------------------------------------------
> [fe02s01:15756] *** Process received signal ***
> [fe02s01:15756] Signal: Segmentation fault (11)
> [fe02s01:15756] Signal code:  (128)
> [fe02s01:15756] Failing at address: (nil)
> [fe02s01:15756] [ 0] /lib64/libpthread.so.0 [0x357320eca0]
> [fe02s01:15756] [ 1]
> /home/hp120242/k00603/local/HH-1298/usr/lib64/libGL.so.1(glGetString+0xe)
> [0x2b747e417cee]
> [fe02s01:15756] *** End of error message ***
> Segmentation fault (core dumped)
>
> ------------------------------------------------------------------------------------------------------------------------
> What is going wrong? Is there any problem with the installation of my
> Paraview with OSMesa support? This pvbatch works fine without
> --use-offscreen-rendering option when I "ssh" with the "-X" option.
>
> Thank you,
> Pradeep
>
>
> 2013/1/31 Andy Bauer <andy.bauer at kitware.com>
>
>> Yes, you don't need OSMesa when there is graphics hardware support. In
>> that case though it will still pop up a render window to create screen
>> shots. OSMesa can still be used even if you have graphics hardware support
>> and is currently the only way to get around having a window to render into.
>>
>>
>> On Wed, Jan 30, 2013 at 9:09 AM, Pradeep Jha <
>> pradeep at ccs.engg.nagoya-u.ac.jp> wrote:
>>
>>> From the online resources I gathered that we need OSMesa only when there
>>> is no graphics hardware on the system. Ok, so I guess I need to install
>>> OSMesa and then compile Paraview again with OSMesa support?
>>>
>>> Please confirm.
>>>
>>>
>>> 2013/1/30 Andy Bauer <andy.bauer at kitware.com>
>>>
>>>> Hi Pradeep,
>>>>
>>>> If you don't want the window to pop up you'll need to use offscreen
>>>> rendering with OSMesa. WriteAnimation() needs to create a window in order
>>>> to generate the image. It is the same with WriteImage().
>>>>
>>>> Andy
>>>>
>>>> On Wed, Jan 30, 2013 at 3:33 AM, Pradeep Jha <
>>>> pradeep at ccs.engg.nagoya-u.ac.jp> wrote:
>>>>
>>>>> Hello,
>>>>>
>>>>> I made my first PV python script using "Start Trace" and "End Trace".
>>>>> Now I am trying to run this script using pvbatch hoping it will execute
>>>>> everything on the command line and not display any graphics. I deleted the
>>>>> Render() statement which was at the end of the python script generated by
>>>>> Trace (file attached with this email). But still it keeps generating the
>>>>> image window and fails when I ssh without X option.
>>>>>
>>>>> I have attached the script file. I am executing pvbatch by the command
>>>>>
>>>>> $pvbatch export_movie.py
>>>>>
>>>>> Why is this happening?
>>>>>
>>>>> Thank you,
>>>>> Pradeep
>>>>>
>>>>>
>>>>>
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>>>>
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>>
>
> _______________________________________________
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>
> 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
>
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