Dear user
I hope you are doing well.
I am having troubles when using parallel distribution to run my python script using kwant.

I  went through kwant discuss mailing list and tried to read about similar issues. I have red for instance the comment made by hristoph Groth Mon, 08 Aug 2016 08:12:46 -0700.
add "from mpi4py import MPI" in the preamble,
• substitute kwant.smatrix(…) -> kwant.smatrix(…, comm=MPI.COMM_WORLD), • execute the script using "mpiexec",

I have got an error while using kwant.smatrix(comm=MPI.COMM_WORLD).
kwant does not recognize comm
TypeError: got an unexpected keyword argument 'comm'

I have also tried without comm but with the following command
mpiexec -n 4 python
mpirun.openmpi -n 4 -x OMP_NUM_THREADS=1 python

but I got the result 4 times