Using mpi4py with python3

[shine....@gmail.com]

Hello Guys

I am new to mpi4py. I have a program with is made for python3. I want to parallelize some parts of it so I am using mpi4py. I managed to run some examples as given in the scipy website (http://mpi4py.scipy.org/docs/usrman/tutorial.html). They work good. But when I run the scripts with command

"mpiexec -n 3 python3 myMpi4pyScript.py"
if I put python instead of python3 it works fine but I think then the python used is python2.7 but not python3. Because I need to run my scripts with python3 I use python3 in above command.

it gives me an error saying there is no module named mpi4py to import MPI. Any help .. ? How is it possible to run python program parallelized with mpi4py with python3.

Setup:
Ubuntu 14.04 LTS
OpenMPI 1.5
mpi4py installed using pip.

Thanks in advance

[Lisandro Dalcin]

On 26 September 2014 14:50, <shine....@gmail.com> wrote:
> it gives me an error saying there is no module named mpi4py to import MPI.
> Any help .. ? How is it possible to run python program parallelized with
> mpi4py with python3.

You have to install mpi4py for "python3", i.e. use "python3 setup.py
install" or perhaps "python3 -m pip install mpi4py". In other words,
if you install a package for python(2), that does not make it
available in python3, you have to install it again.


--
Lisandro Dalcin
============
Research Scientist
Computer, Electrical and Mathematical Sciences & Engineering (CEMSE)
Numerical Porous Media Center (NumPor)
King Abdullah University of Science and Technology (KAUST)
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[Aditya Ghantasala]

Thank you Lisandro

I installed mpi4py for python3 and am using it now with in my program.