Nvidia ConnectX-6 Dx MCX623432AE-ADAB User Manual page 44

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On Redhat and SLES distributions with errata kernel installed there is no need to use
the mlnx_add_kernel_support.sh script. The regular installation can be performed
and weak updates mechanism will create symbolic links to the MLNX_OFED kernel
modules.
The "mlnx_add_kernel_support.sh" script can be executed directly from the mlnxofedinstall
script. For further information, please see '--add-kernel-support' option below.
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On Ubuntu and Debian distributions drivers installation use Dynamic Kernel Module
Support (DKMS) framework. Thus, the drivers' compilation will take place on the host
during MLNX_OFED installation. Therefore, using "mlnx_add_kernel_support.sh" is
irrelevant on Ubuntu and Debian distributions.
Example
The following command will create a MLNX_OFED_LINUX ISO image for RedHat 6.3 under
the /tmp directory.
# ./MLNX_OFED_LINUX-x.x-x-rhel6.3-x86_64/mlnx_add_kernel_support.sh -m /tmp/MLNX_OFED_LINUX-x.x-x-rhel6.3-
x86_64/ --make-tgz
Note: This program will create MLNX_OFED_LINUX TGZ for rhel6.3 under /tmp directory.
All Mellanox, OEM, OFED, or Distribution IB packages will be removed.
Do you want to continue?[y/N]:y
See log file /tmp/mlnx_ofed_iso.21642.log
Building OFED RPMs. Please wait...
Removing OFED RPMs...
Created /tmp/MLNX_OFED_LINUX-x.x-x-rhel6.3-x86_64-ext.tgz
• The script adds the following lines to /etc/security/limits.conf for the userspace components
such as MPI:
• * soft memlock unlimited
• * hard memlock unlimited
• These settings set the amount of memory that can be pinned by a user space
application to unlimited. If desired, tune the value unlimited to a specific amount of
RAM.
For your machine to be part of the Ethernet fabric, a Subnet Manager must be running on one of the
fabric nodes. At this point, NVIDIA OFED for Linux has already installed the OpenSM Subnet Manager
on your machine.
For the list of installation options, run:
./mlnxofedinstall --h
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The DKMS (on Debian based OS) and the weak-modules (RedHat OS) mechanisms rebuild the
initrd/initramfs for the respective kernel in order to add the MLNX_OFED drivers.
When installing MLNX_OFED without DKMS support on Debian based OS, or without KMP
support on RedHat or any other distribution, the initramfs will not be changed. Therefore,
the inbox drivers may be loaded on boot. In this case, openibd service script will
automatically unload them and load the new drivers that come with MLNX_OFED.
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