[Paraview-developers] ParaView plugins with MPI only on client

[Burlen Loring]

On 6/2/2013 1:15 PM, Biddiscombe, John A. wrote:
>
> The reason that the multi-core option doesn't work is because all it 
> does is internally spawn N pvservers and connect to them silently - 
> the client is still a serial process without mpi enabled or initted 
> (is that a word?).
>
John, I think you're wrong about that. here's why: when paraview is 
running in client server mode, via its internal multicore startup or 
otherwise, the reader is constructed on the pvserver not on the client. 
and in the these cases pvserver has mpi initted... this is not to say 
that you wont crash the client if you're not careful about making mpi 
calls in client only mode when mpi is not initted. so you'd need to 
avoid mpi calls when mpi is not initted if you want your reader to place 
nice with standard pv ... I guess in your case you need the threaded mpi 
init too... don't forget to load your plugin...
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