OpenMPI-4.1.2-Compilation-Installation

# wget https://download.open-mpi.org/release/open-mpi/v4.1/openmpi-4.1.2.tar.gz

# tar -xvf openmpi-4.1.2.tar.gz
# cd openmpi-4.1.2

$ tar xf openmpi-<version>.tar.bz2
$ cd openmpi-<version>
$ ./configure --prefix=/opt/apps/compilers/openmpi/openmpi-4.1.2 |& tee config.out
...lots of output...
$ make -j $(nproc) |& tee make.out
...lots of output...
$ make install |& tee install.out
...lots of output...


######### Create Module File #########

[root@apps share]# cat /opt/apps/modulefiles/compilers/openmpi/openmpi-4.1.2
#%Module1.0#####################################################################
###
### openmpi-4.1.2 modulefile
###
###
#
#
#
if { ![ is-loaded  compilers/gcc/gcc-11.2.1 ] } {
        module load  compilers/gcc/gcc-11.2.1
}

set     NAME            "openmpi-4.1.2"
set     VERSION         "4.1.2"
set     DESC            "openmpi-4.1.2"
set     BASEDIR         /opt/apps/compilers/openmpi/openmpi-4.1.2


prepend-path    PKG_CONFIG_PATH         $BASEDIR/lib/pkgconfig

prepend-path    PATH                    $BASEDIR/bin
prepend-path    LIBRARY_PATH            $BASEDIR/lib
prepend-path    LD_LIBRARY_PATH         $BASEDIR/lib
prepend-path    INCLUDE_PATH            $BASEDIR/include
prepend-path    FPATH                   $BASEDIR/include
prepend-path    CPATH                   $BASEDIR/include
prepend-path    MANPATH                 $BASEDIR/share/man


#proc ModulesHelp { } {
#        puts stderr "\n\n $NAME $VERSION Version - $DESC  \n"
#}

#module-whatis   "$NAME $VERSION Version - $DESC "

===================================================================================
For testing openmpi code compilation then follow the below link
https://mpitutorial.com/tutorials/mpi-hello-world/
===================================================================================