How to install OpenMPI, mpi4py, PETSc and petsc4py for use with OpenMDAO on OS X and Ubuntu with Conda

mpi_and_petsc_for_openmdao_osx_ubuntu_conda.md

1. Prerequisites

• Ubuntu:

  sudo apt-get install libibnetdisc-dev
  sudo apt-get install libblas-dev libatlas-dev liblapack-dev
  

1. Install OpenMPI

• Download OpenMPI: https://www.open-mpi.org/software/ompi/v1.10/

• Extract and configure

  cd ~/Downloads/openmpi-1.10.1
  mkdir build
  cd build
  # I prefer to keep /usr/local clean, so I put it in /opt/openmpi
  ./configure --prefix=/opt/openmpi --with-devel-headers --enable-binaries
  make
  sudo make install
  

• Add the following to your bash profile

  • OS X:

    export DYLD_LIBRARY_PATH=${DYLD_LIBRARY_PATH}:/opt/openmpi/lib
    export PATH=${PATH}:/opt/openmpi/bin
    

  • Ubuntu:

    export LD_LIBRARY_PATH=LD_LIBRARY_PATH=/opt/openmpi/lib:$LD_LIBRARY_PATH
    export PATH=/opt/openmpi/bin:$PATH
    

1. Activate your conda environment

2. Install mpi4py

git clone https://github.com/mpi4py/mpi4py.git ./mpi4py.git
cd mpi4py.git
python setup.py build --mpicc=/opt/openmpi/bin/mpicc
python setup.py install

1. PETSc and petsc4py

git clone https://bitbucket.org/petsc/petsc.git ./petsc.git
cd petsc.git
python setup.py build
python setup.py install
cd ..
git clone https://bitbucket.org/petsc/petsc4py.git ./petsc4py.git
cd petsc4py.git
python setup.py build
python setup.py install

Thank you for your instructions. Those have helped me a lot.
I want to add that the petsc repo moved to https://github.com/petsc/petsc.git and that it has helped me to run ./configure before building/installing petsc. Best regards, Tobi