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install-openmpi.md

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Install OpenMPI

Prerequisites

  1. The tarball of OpenMPI's source
  2. tar - an archiving utility
  3. root or sudo permission (optional)

Caveat!

If you are not familiar with the new version of OpenMPI, I strongly suggest that you should consider the previous popular version such as v.1.6.5.

Step-by-step installation instruction

  1. Download the tarball of source of OpenMPi from its official website https://www.open-mpi.org. For example, on the day of this writing, I download OpenMPI version 4.0.2 and install it on Red Hat 8 and Ubuntu 18.04.
cd $HOME
wget https://download.open-mpi.org/release/open-mpi/v4.0/openmpi-4.0.2.tar.gz
  1. Uncompress the tarball using tar.
tar -xvf openmpi-4.0.2.tar.gz
  1. Configure settings and specify where you want to install OpenMPI.
cd openmpi
./configure --prefix=/usr/local/openmpi

Note that root or sudo permission is required for install OpenMPI on the global space. For the users, you should set prefix to directory under your home space.

  1. Compile OpenMPI using make

    • Global: 
      sudo make all install
    • Local: 
      make
make install

  2. Add OpenMPI to the environment variables by specifying following commands in .bashrc or .profile file

vi $HOME/.bashrc
export PATH=/usr/local/openmpi/bin/:$PATH
export LD_LIBRARY_PATH=/usr/local/openmpi/lib/:$LD_LIBRARY_PATH
source $HOME/.bashrc
  1. Check if OpenMPI is installed successfully using command
mpirun --version

Contact

Rangsiman Ketkaew - [email protected]