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 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.