[PeterX30]

I have used succesfully pyFoam on a single node multi core hardware.
Recently I extended to a small cluster with 3 nodes (8 cores + 12 cores +12 cores with in total 32 cores)
On this 3 node configuration I`m able to run succesfully a parallel job under mpi. Here is an example how I can succesfully start a parallel pimpleFoam run on all nodes:

mpirun --hostfile hosts -np 32 pimpleFoam - parallel

In order to plot on the fly residuals, I used to apply pyFoam. On one node this is working well. Example for the corresponding job (the first node has 8 cores listed in hosts):

pyFoamPlotter.py --machinefile=hosts --proc=8 --progress pimpleFoam

Unfortunately this is not working if I start it on all 3 nodes:

pyFoamPlotter.py --machinefile=hosts --proc=32 --progress pimpleFoam

The general log file in the ~/.pyfoam/log directory contains the following warning:
WARNING Not deregistering, because it seems we were not registered in the first place - in FoamServer.py:511

What is going wrong? I thouht I have defined all required paths on all nodes ... Any idea?

Thank`s a lot for your support.