[vtkusers] vtkThreadedController

[Berk Geveci]

You can still use threads - see vtkMultiThreader. However, be aware that
there is lots of parts of VTK that are not thread safe. We are working on
improving VTK's thread safely but it is a long road.

-berk


On Fri, Aug 2, 2013 at 2:40 PM, Laurence Griffiths <
lgriffiths.aero at gmail.com> wrote:

> Just incase someone reads my previous post and thinks they will attempt
> the same with python threads:
>
> The global interpreter lock on threads, means things wont run in parallel.
> And for anything to be passed to a multiprocess, it must be ´pickelable
> (vtk objects are not)
>
> Will use MPI.
>
>
>
>
>
>  On Fri, Aug 2, 2013 at 4:31 PM, Berk Geveci <berk.geveci at kitware.com>wrote:
>
>> Hi Laurence,
>>
>> We deprecated vtkThreadedController quite a while ago. It wasn't being
>> maintained and until now, we thought it wasn't being used. Are you using it
>> in an application? What is your use case?
>>
>> Best,
>> -berk
>>
>>
>>
>> On Fri, Aug 2, 2013 at 9:58 AM, Laurence Griffiths <
>> lgriffiths.aero at gmail.com> wrote:
>>
>>> Does anybody know what happened to vtkThreadedController. I cannot find
>>> it anywhere in vtk6.0.0.
>>>
>>>
>>> An example seems to hint that its possible to get a
>>> vtkThreadedController by using vtkMultiProcessController without MPI:
>>>
>>> http://vtk.org/gitweb?p=VTK.git;a=blob;f=Examples/ParallelProcessing/Generic/Cxx/TaskParallelismWithPorts.cxx
>>>
>>> however vtkMultiProcessControler is an abstract class, so i am unable to
>>> use it as shown in the exmaple.
>>>
>>> Another example suggests the same using vtkMPIController without MPI to
>>> get a threaded controller:
>>>
>>> http://vtk.org/gitweb?p=VTK.git;a=blob;f=Examples/ParallelProcessing/Generic/Cxx/TaskParallelism.cxx
>>>
>>> However for me this doesnt seem to work, I get mpi errors if i try to
>>> inialise the MPIController without MPI.
>>>
>>> Doesnt anyone have any hints on how to make a threadedcontroller work in
>>> vtk6.0.0
>>>
>>> Cheers,
>>> Laurence.
>>>
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>
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