[Paraview] how Python interact with ParaView

[Andy Bauer]

I'm going to try and put up a public wiki this weekend about the
coprocessing/in situ viz.  If I don't send out the link on Monday bug me
about it until I get it done :)

Andy

On Thu, Mar 18, 2010 at 9:56 AM, liuning <tantics at gmail.com> wrote:

> Hi Andy,
>
> That is great! I will try the CoProcessing soon. We have a cluster(about
> 500 nodes) to do physical simulation. The generated data mainly consist of
> volume data ,meshes and particles. We want to visualize the data and show
> the result using a tiled display. People can interact with the viz process
> through a master node. I really appreciate if you can give me more details.
>
> Thank you.
>
> -Ning
>
> On Thu, Mar 18, 2010 at 9:12 PM, Andy Bauer <andy.bauer at kitware.com>wrote:
>
>> I'm working on doing in situ viz with paraview and have committed some
>> beta code into the paraview repository.  The code is in
>> ParaView3/CoProcessing if you want to look at it.  You can turn it on by
>> setting the paraview_enable_coprocessing cmake variable to on.  It uses
>> python to set up the pipelines for you in the coprocessing libraries.  You
>> can also build paraview with
>> PARAVIEW_BUILD_PLUGIN_CoProcessingScriptGenerator which will create a plugin
>> to create the python scripts for coprocessing.  We have this working and are
>> in the processing of getting performance numbers on some supercomputers with
>> a parallel cfd code but everything is still a bit sparsely documented.  If
>> you're interested I can give you more details.
>>
>> Andy
>>
>>
>> On Thu, Mar 18, 2010 at 8:04 AM, David E DeMarle <
>> dave.demarle at kitware.com> wrote:
>>
>>>
>>>> PS: Boost.Python seems to be capable of enabling Python to invoke C++
>>> methods.Does ParaView use Boost.Python ?
>>>
>>> It does not. For completeness you should also investigate swig which is
>>> the standard for doing that.
>>>
>>> But ParaView uses neither of those. Instead it has its own (older)
>>> wrapping technology, which is the same technology at work in Tcl, Java and
>>> Python wrapped VTK, and also behind the wrapping into ParaView's own client
>>> server language. The idea is the same behind all of them, cmake scripts that
>>> drive a lex/yacc based executable that parses VTK C++ header files to create
>>> code that can instantiate VTK classes and then call public methods on those
>>> instances. See http://www.vtk.org/Wiki/VTK/Python_Wrapping_FAQ for more
>>> information. But you will have to read the code to learn the details.
>>>
>>> Once wrapped, python scripts can call into ParaView's C++ servermanager
>>> API just like the standard C++ client does once they have loaded the wrapped
>>> ParaView libraries.
>>>
>>>
>>> Thanks a lot.
>>>>
>>>> -Ning
>>>>
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