1. Download the tgz MOFED package form: http://www.mellanox.com/page/software_overview_ib
2. Untar it on your node 
3. run ./mlnxofedinstall --add-kernel-support --skip-repo
4. if you don't have the needed packages the script will prompt you to install them
5. Rebuilt lustre:
   1. ./configure --with-linux=/usr/src/kernels/3.10.0-514.10.2.el7_lustre.x86_64/ --with-o2ib=/usr/src/ofa_kernel/default
   2. make rpms