Error when installing mpi4py

Question

I\'m trying to install mpi4py using pip install mpi4py, but I\'m getting the following error:

error: Cannot find \'mpi.h\' header. Check your configuration!!!
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Answer 1

If somebody stumbles by and has the same problem I had:

I wanted to install mpi4py using pip as root:

sudo pip install mpi4py

I got the error message that mpi.h was missing during the installation. The path was set correctly, but only for my user, not for root. So if you run into trouble with missing libraries/headers during any installation, make sure the correct environment is also set up for root.

As I use mpi-selector to select which mpi implementation you use, I just had to run mpi-selector as root to set up everything correctly, and the installation succeeded.

Answer 2

None of the above solutions worked for me. I just use the conda install:

brew install mpich

conda install mpi4py

Answer 3

I met with the similar problem and fixed this by firstly

brew install mpich

And then

pip install mpi4py

Answer 4

you can do this:

brew install mpich

then

sudo find / -name mpicc

finally

env MPICC=/yourpath/mpicc pip3 install mpi4py

Answer 5

first post here and new to python , sorry if im off topic.

i finally installed mpi4py

1) by downloading the right version from here https://www.lfd.uci.edu/~gohlke/pythonlibs/#mpi4py

2) open cmd ,change directory to where the downloaded file is

3) pip install some-package.whl ( How do I install a Python package with a .whl file? )

Answer 6

As the error says, there are libraries missing. I solved it by installing libopenmpi-dev package

sudo apt install libopenmpi-dev

and then installed the mpi4py using pip

sudo pip install mpi4py