# run pvbatch in parallel using pvserver
**URL:** https://discourse.paraview.org/t/run-pvbatch-in-parallel-using-pvserver/14316
**Category:** ParaView Support
**Created:** [April 2, 2024, 11:54am UTC](https://discourse.paraview.org/t/run-pvbatch-in-parallel-using-pvserver/14316 "2024-04-02T11:54:10Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@otaolafr](https://discourse.paraview.org/u/otaolafr)
#### Post date: [April 2, 2024, 11:54am UTC](https://discourse.paraview.org/t/run-pvbatch-in-parallel-using-pvserver/14316/1 "2024-04-02T11:54:10Z")
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
```auto
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,
---
### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [April 2, 2024, 11:58am UTC](https://discourse.paraview.org/t/run-pvbatch-in-parallel-using-pvserver/14316/2 "2024-04-02T11:58:11Z")
> [@otaolafr](#):
>
> should I use `mpiexec or mpirun`?
you should use the `mpiexec` executable available in the `bin` directory
So your command should be (for pvserver)
```auto
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:
```auto
cd path/to/paraview
./bin/mpiexec -np $nProc ./bin/pvbatch /path/to/myScript.py
```
---
### Author:  [@otaolafr](https://discourse.paraview.org/u/otaolafr)
#### Post date: [April 2, 2024, 12:07pm UTC](https://discourse.paraview.org/t/run-pvbatch-in-parallel-using-pvserver/14316/3 "2024-04-02T12:07:13Z")
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:
```auto
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
---
### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [April 2, 2024, 12:19pm UTC](https://discourse.paraview.org/t/run-pvbatch-in-parallel-using-pvserver/14316/4 "2024-04-02T12:19:39Z")
reboot, you may have pvservers running in the background.
---
### Author:  [@otaolafr](https://discourse.paraview.org/u/otaolafr)
#### Post date: [April 2, 2024, 12:26pm UTC](https://discourse.paraview.org/t/run-pvbatch-in-parallel-using-pvserver/14316/5 "2024-04-02T12:26:32Z")
After rebooting, the command `./bin/mpiexec -np $nProc ./bin/pvserver` is not finishing of running, is it normal? (it has already passed several minutes)
---
### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [April 2, 2024, 12:28pm UTC](https://discourse.paraview.org/t/run-pvbatch-in-parallel-using-pvserver/14316/6 "2024-04-02T12:28:06Z")
Well, yes, the distributed `pvserver` is running, waiting for you to connect to it.