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!!!
Earlier in the same error report I have,
clang: error: linker command failed with exit code 1 (use -v to see invocation)
What might the problem be?
Thanks!
As the error says, there are libraries missing. I solved it by installing libopenmpi-dev package
sudo apt-get install libopenmpi-dev
and then installed the mpi4py using pip
pip install mpi4py
sudo pip install XXX
conda install -c conda-forge mpi4py mpichI met with the similar problem and fixed this by firstly
brew install mpich
And then
pip install mpi4py
you can do this:
brew install mpich
then
sudo find / -name mpicc
finally
env MPICC=/yourpath/mpicc pip3 install mpi4py
None of the above solutions worked for me. I just use the conda install:
brew install mpich
conda install mpi4py
If mpi4py cannot find mpi.h, then likely the problem is how you are pointing mpi4py to your existing mpi library.
$ python setup.py build --mpicc=/where/you/have/mpicc
Now, there there are a few special cases related to OS X. You should consult http://mpi4py.scipy.org/docs/usrman/install.html to see if any apply to you.
env MPICC=/path/to/mpicc/ pip install mpi4pyin my case, all solutions above is failed but succeded by conda
conda install -c conda-forge mpi4py mpich
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.
mpi.h is a header file and LD_LIBRARY_PATH is for libraries. The issue was more likely with your $PATH (e.g. mpicc and friends were not in your default path)I have the similar issue, the following helps me as well.
sudo apt install libopenmpi-dev
This might help on Fedora 38:
sudo dnf install python3-mpi4py-mpich python3-mpi4py-openmpi # second one not necessary I guess
module load mpi/mpich-$(arch)
pip3 install mpi4py
Mentioned here = https://mpi4py.readthedocs.io/en/latest/install.html2
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? )
