run pvbatch in parallel using pvserver

ParaView Support
1

Hello,
I have read the different posts around the forum, I am a little bit lost about this.
I want to run a paraview script using several processors in a openfoam decomposed case (equal number of processors for paraview part and openfoam case data).
I am in linux (ubuntu based) using the binaries from ParaView-5.12.0-MPI-Linux-Python3.10-x86_64.tar.gz
which is the correct workflow?

  1. create a server running mpiexec -n $nProc pvserver
  2. run mpiexec -np $nProc pvbatch --mpi myScript.py
    should I use mpiexec or mpirun?
    while running the first command, I am already encountering the issue that the address is already used
mpirun -n 8 pvserver
Waiting for client...
Connection URL: cs://franco-precision7560:11111
Waiting for client...
Connection URL: cs://franco-precision7560:11111
Waiting for client...
Connection URL: cs://franco-precision7560:11111
Waiting for client...
Connection URL: cs://franco-precision7560:11111
Accepting connection(s): franco-precision7560:11111
(   0.436s) [pvserver        ]          vtkSocket.cxx:241    ERR| vtkServerSocket (0x1d88050): Socket error in call to listen. Address already in use.
(   0.423s) [pvserver        ]          vtkSocket.cxx:190    ERR| vtkServerSocket (0x2537060): Socket error in call to bind. Address already in use.
(   0.436s) [pvserver        ]          vtkSocket.cxx:190    ERR| vtkServerSocket (0xd97060): Socket error in call to bind. Address already in use.
(   0.436s) [pvserver        ]vtkTCPNetworkAccessMana:441    ERR| vtkTCPNetworkAccessManager (0x1af4750): Failed to set up server socket.
(   0.423s) [pvserver        ]vtkTCPNetworkAccessMana:441    ERR| vtkTCPNetworkAccessManager (0x22a3750): Failed to set up server socket.
(   0.436s) [pvserver        ]vtkTCPNetworkAccessMana:441    ERR| vtkTCPNetworkAccessManager (0xb03750): Failed to set up server socket.
Exiting...

nevertheless I have tried to kill it using htop (looking for pvserver and kill the instance) but even after I am getting the error.
how can I create a new pvserver? and associate it with pvbatch so it runs the script in the simulation in parallel.
thanks in advance,

2

you should use the mpiexec executable available in the bin directory

So your command should be (for pvserver)

cd path/to/paraview
./bin/mpiexec -np $nProc ./bin/pvserver

Then connect to your server using ParaView.

but since you want to use pvbatch you do not even need pvserver, just run:

cd path/to/paraview
./bin/mpiexec -np $nProc ./bin/pvbatch /path/to/myScript.py
3

hello mathieu,
thanks for your answer, and what can I do for the error I am getting from the pvserver command?
if I do, I get:

nProc=8
./bin/mpiexec -np $nProc ./bin/pvserver
Waiting for client...
Connection URL: cs://franco-precision7560:11111
(   0.380s) [pvserver.0      ]          vtkSocket.cxx:190    ERR| vtkServerSocket (0x22b6700): Socket error in call to bind. Address already in use.
(   0.380s) [pvserver.0      ]vtkTCPNetworkAccessMana:441    ERR| vtkTCPNetworkAccessManager (0x201d370): Failed to set up server socket.
Exiting...
Exiting...
Exiting...
Exiting...
Exiting...
Exiting...
Exiting...
Exiting...

thanks in advance

4

reboot, you may have pvservers running in the background.

5

After rebooting, the command ./bin/mpiexec -np $nProc ./bin/pvserver is not finishing of running, is it normal? (it has already passed several minutes)
image

6

Well, yes, the distributed pvserver is running, waiting for you to connect to it.

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