We assumed that you have installed GNU 6.5 and isl-0.15

Download the latest OpenMPI 3.1.6 package from OpenMPI site

./configure --prefix=/usr/local/gnu/openmpi-3.1.6 --with-tm=/opt/pbs --enable-orterun-prefix-by-default --enable-mpi-cxx --enable-openib-rdmacm-ibaddr

–enable-orterun-prefix-by-default (Configure OMPI –enable-orterun-prefix-by-default and so that you do not need to add the prefix option)
–enable-openib-rdmacm-ibaddr (To enable routing over IB)
–enable-mpi-cxx (C++ bindings are no more built by default)

make all install | tee install.log