5.6.4 Mellanox OpenFabrics Enterprise Distribution To install the Mellanox OFED for Linux, complete the following steps. At the website, find the  IBM HPC and Technical Clusters  section and download the  ISO file  MLNX_OFED_LINUX-4.3-4.0.5.1-rhel7.5alternate-ppc64le.iso  from the IBM  MTM 8335-GT[W,C,G,H,X] row. Note:  The Mellanox OFED is available for download from the Mellanox downloads  website.  Because you must accept a user agreement, the package must be downloaded by  using a browser. Also, clear the  /tmp  directory after successful installation: Chapter 5. Nodes and software deployment  107 $ cat $new_postinstall $ echo "# Install InfiniBand MOFED" >> $new_postinstall $ echo "/install/postscripts/mlnxofed_ib_install -p $dir/$file -m $args -end-  -i \$installroot -n genimage" >> $new_postinstall $ echo "rm -rf \$installroot/tmp/MLNX_OFED_LINUX*" >> $new_postinstall $ lsdef -t osimage rh75-compute-stateless -i postinstall Object name: rh75-compute-stateless postinstall=/install/custom/netboot/rh/rh75-compute.postinstall $ script=/install/postscripts/mlnxofed_ib_install $ cp /opt/xcat/share/xcat/ib/scripts/Mellanox/mlnxofed_ib_install.v2 $script $ chmod +x $script $ ls -l $script -rwxr-xr-x 1 root root 16269 22. Nov 10:51  /install/postscripts/mlnxofed_ib_install $ Download via browser, then scp to xcat management server $ scp MLNX_OFED_LINUX-4.3-4.0.5.1-rhel7.5alternate-ppc64le.iso  xcat-mn:/install/software/mofed $ dir=/install/software/mofed $ mkdir -p $dir 2. Copy the  mlnxofed_ib_install.v2  script into the  postscripts  directory (with the required  file name  mlnxofed_ib_install ). This script is a sample script that is intended to help the  installation of the Mellanox OFED drivers: 3. Include the  --add-kernel-support  argument to the list of default arguments  ( --without-32bit --without-fw-update --force )  according to the xCAT documentation  to rebuild kernel modules for the installed kernel version. $ file=MLNX_OFED_LINUX-4.3-4.0.5.1-rhel7.5alternate-ppc64le.iso $ args=' --add-kernel-support  --without-32bit --without-fw-update --force' GLYPH<SM590000> Mellanox OFED Installation Script - Preparation page GLYPH<SM590000> InfiniBand Network Configuration page  1. Download and copy the ISO file to the xCAT installation directory by running the following  command. For more information, see the following xCAT documentation resources: