Installing OpenMPI implementation of MPI on CentOS or RedHat Enterprise Linux

The Open MPIProject is an open source Message Passing Interface implementation that is developed and maintained by a consortium of academic, research, and industry partners. Open MPI is therefore able to combine the expertise, technologies, and resources from all across the High Performance Computing community in order to build the best MPI library available.

1. Download the source files from the below link and untar it.

http://www.open-mpi.org/software/ompi/v1.8/

  

tar xvf openmpi-1.8.1.tar

2. Go to the source directory

cd openmpi-1.8.1

3. Configure, compile and install by using the following commands

./configure --prefix=/home1/abhishek/installed/openmpi CC=gcc CXX=g++

 

make all

 

      

make install

 

 

   

4. Compiler Settings

(a.) Add the following lines on the .bashrc file in the home directory(permanent) or export these environment variables from current working shell(temporary).

gedit ~/.bashrc

Add the path as

export PATH=/home1/abhishek/installed/openmpi/bin/:$PATH

export LD_LIBRARY_PATH=/home1/abhishek/installed/openmpi/ lib/:$LD_LIBRARY_PATH 

export INCLUDE=/home1/abhishek/installed/openmpi/include/: $INCLUDE

 

2. Source the .bashrc file to apply changes.

source ~/.bashrc

 

Note: Current stable release of Open MPI:Open Source High Performance Computing is Version 3.0
Refer this link for more details:
https://www.open-mpi.org/software/ompi/v3.0/