[Paraview-developers] Error in sharing vtkArrayData across Paraview ranks

[Regis Perdreau]

unsubscribe

2015-09-18 23:16 GMT+02:00 Cory Quammen <cory.quammen at kitware.com>:
> Hi Prashant,
>
> Indeed, transmitting vtkArrayData is not currently supported in
> vtkMultiProcessController. It looks like it could be supported with some
> modifications to VTK, but I'm not aware of anyone working on it right now.
>
> If you wanted to contribute support for communicating this type, you can
> look at modifying vtkCommunicator.cxx by adding the data set type
> VTK_ARRAY_DATA to the switch statements in
>
> vtkCommunicator::Send(vtkDataObject* data, int remoteHandle, int tag)
>
> and
>
> vtkCommunicator::ReceiveDataObject(vtkDataObject* data, int remoteHandle,
> int tag, int dataType)
>
> and then modify vtkGenericDataObjectWriter.cxx to instantiate a
> vtkArrayDataWriter in
>
> void vtkGenericDataObjectWriter::WriteData()
>
> when the input type is VTK_ARRAY_DATA.
>
> If you can get that to work satisfactorily in your plugin, I would be happy
> to review any patch you might push to VTK. See [1] for details how to submit
> a patch.
>
> Thanks,
> Cory
>
> [1] https://gitlab.kitware.com/vtk/vtk/blob/master/CONTRIBUTING.md
>
> On Wed, Sep 16, 2015 at 5:32 AM, Prashant V <prashant.v at quest-global.com>
> wrote:
>>
>> Hi,
>>
>> I have developed a Paraview source plugin. While running Paraview in
>> parallel mode, I am trying to share a vtkArrayData from root process to
>> other processes using vtkMPI send-receive. However, I am getting errors:
>> 'Can not send vtkArrayData' and 'Can not receive vtkArrayData'. Is it that
>> vtkArrayData is not allowed using send-receive? Is there any other
>> alternative to share vtkArrayData across processes? Thanks.
>>
>> Below is code snippet:
>>
>> vtkMultiProcessController* Controller; // defined in header file
>>
>> Code in cxx:
>>
>> this->Controller = vtkMultiProcessController::GetGlobalController();
>> if(this->Controller)
>> {
>>      this->Controller->Register(this);
>> }
>>
>> vtkSmartPointer<vtkArrayData> masterArray;
>>
>> if(proc == 0) //root process
>> {
>>     masterArray =  from_some_method();
>>     for(int p=1; p < procCount; ++p)
>>     {
>>          this->Controller->Send(masterArray, p, 9999);
>>     }
>> }
>> else
>> {
>>     this->Controller->Receive(masterArray, 0, 9999);
>> }
>>
>> Regards,
>> Prashant
>> ---Disclaimer------------------------------ This e-mail contains
>> PRIVILEGED AND CONFIDENTIAL INFORMATION intended solely for the use of the
>> addressee(s). If you are not the intended recipient, please notify the
>> sender by e-mail and delete the original message. Opinions, conclusions and
>> other information in this transmission that do not relate to the official
>> business of QuEST Global and/or its subsidiaries, shall be understood as
>> neither given nor endorsed by it. Any statements made herein that are
>> tantamount to contractual obligations, promises, claims or commitments shall
>> not be binding on the Company unless followed by written confirmation by an
>> authorized signatory of the Company.
>> -----------------------------------------------------------------------------------
>>
>> _______________________________________________
>> Powered by www.kitware.com
>>
>> Visit other Kitware open-source projects at
>> http://www.kitware.com/opensource/opensource.html
>>
>> Search the list archives at:
>> http://markmail.org/search/?q=Paraview-developers
>>
>> Follow this link to subscribe/unsubscribe:
>> http://public.kitware.com/mailman/listinfo/paraview-developers
>>
>
>
>
> --
> Cory Quammen
> R&D Engineer
> Kitware, Inc.
>
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Search the list archives at:
> http://markmail.org/search/?q=Paraview-developers
>
> Follow this link to subscribe/unsubscribe:
> http://public.kitware.com/mailman/listinfo/paraview-developers
>