FYI: pvserver will likely be run in a separate MPI job if you're doing a Live connection.
On Sat, Oct 28, 2017 at 11:05 AM, Andy Bauer <andy.ba...@kitware.com> wrote: > Hi, > > Catalyst by default uses MPI_COMM_WORLD of the existing MPI library that > the simulation code is linked with. You can use another MPI communicator as > well. An example of that is in the Examples/Catalyst/MPISubCommunicatorExample > source directory. > > Best, > Andy > > On Sat, Oct 28, 2017 at 7:50 AM, Kolja Petersen <petersenko...@gmail.com> > wrote: > >> Hello, >> I am trying to understand a Catalyst implementation detail. >> >> Because parallel Catalyst may transfer huge data to a parallel pvserver, >> I thought the Catalyst processes would have themselves added to the >> pvserver's MPI communicator. However, MPI_Comm_spawn() is the only function >> that I know of for this task, and I find "MPI_Comm_spawn" nowhere in the >> code (searched case insensitive). >> >> I thought that the standard Catalyst TCP port 22222 was only used for >> control messages between Catalyst and pvserver, and data exchange would go >> via MPI. But apparently there is no MPI connection between Catalyst and >> pvserver, and all data are sent via TCP:22222, which could explain observed >> network bottlenecks. >> >> Can somebody clarify this implementation detail? >> Thanks >> Kolja >> >> _______________________________________________ >> Powered by www.kitware.com >> >> Visit other Kitware open-source projects at >> http://www.kitware.com/opensource/opensource.html >> >> Please keep messages on-topic and check the ParaView Wiki at: >> http://paraview.org/Wiki/ParaView >> >> Search the list archives at: http://markmail.org/search/?q=ParaView >> >> Follow this link to subscribe/unsubscribe: >> http://public.kitware.com/mailman/listinfo/paraview >> >> >
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