[Fwd: [Paraview] Run Paraview sort-last on several graphics devices in the same machine]

[Moreland, Kenneth]

> I come back to this problem again.  I am trying to set the 
> DISPLAY in the code at MPI_Init.  However, I am not sure this 
> really does the work as expected because Paraview has a very 
> complicated architecture.
> Precisely, I add a paragraph after the MPI_Init in 
> VTK/Parallel/vtkMPIController.cxx.  Please confirm me this is 
> the right place to add, or point me where is the right place 
> if this is not.

If it was me, I would probably put it in vtkPVMain::Initialize(int, int)
right under the call to MPI_Comm_rank, but whatever works.

> I can verify that the data is processed by two process by 
> adding a "Process Id Scalar" filter.
> 
> However, how can I verify the render task is assigned to two 
> graphic cards.  Any thoughts?

ParaView should open a window on all graphics cards.  Is there a way you
can see the output of all pipes?  Also make sure that under "3D View
Options" the Composite option is on and the slider is all the way to the
left.

-Ken