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Mellanox Technologies

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Mellanox OFED is a single Virtual Protocol Internconnect (VPI) software stack which operates 
across all Mellanox network adapter solutions supporting 10, 20, 40 and 56 Gb/s InfiniBand (IB); 
10, 40 and 56 Gb/s Ethernet; and 2.5 or 5.0 GT/s PCI Express 2.0 and 8 GT/s PCI Express 3.0 
uplinks to servers.
All Mellanox network adapter cards are compatible with OpenFabrics-based RDMA protocols 
and software, and are supported with major operating system distributions.
Mellanox OFED is certified with the following products:
• Mellanox Messaging Accelerator (VMA™) software: Multicast socket acceleration 

library that performs OS bypass for standard socket based applications.

• Mellanox Unified Fabric Manager (UFM®) software: Powerful platform for managing 

demanding scale-out computing fabric environments, built on top of the OpenSM 
industry standard routing engine. 

• Fabric Collective Accelerator (FCA) - FCA is a Mellanox MPI-integrated software 

package that utilizes CORE-Direct technology for implementing the MPI collectives 
communications.

Mellanox OFED for Linux (MLNX_OFED_LINUX) is provided as ISO images or as a tarball,
one per supported Linux distribution and CPU architecture, that includes source code and binary
RPMs, firmware, utilities, and documentation. The ISO image contains an installation script 
(called 

mlnxofedinstall

) that performs the necessary steps to accomplish the following:

• Discover the currently installed kernel
• Uninstall any InfiniBand stacks that are part of the standard operating system distribu-

tion or another vendor's commercial stack

• Install the MLNX_OFED_LINUX binary RPMs (if they are available for the current 

kernel)

• Identify the currently installed InfiniBand HCAs and perform the required firmware 

updates

MLNX_OFED_LINUX contains the following software components:
• Mellanox Host Channel Adapter Drivers

• mlx5, mlx4 (VPI), which is split into multiple modules:

•  mlx4_core (low-level helper)
•  mlx4_ib (IB)
• mlx5_ib
• mlx5_core