User Manual

IntroductionRev 2.3-1.0.1

Mellanox Technologies

provide access to remote storage devices across an InfiniBand fabric. The SRP Target resides in

an I/O unit and provides storage services. See

Chapter 3.3.1, “SCSI RDMA Protocol (SRP)”.

uDAPL

User Direct Access Programming Library (uDAPL) is a standard API that promotes data center

application data messaging performance, scalability, and reliability over RDMA interconnects:

InfiniBand and RoCE. The uDAPL interface is defined by the DAT collaborative.

This release of the uDAPL reference implementation package for both DAT 1.2 and 2.0 specifi-

cation is timed to coincide with OFED release of the Open Fabrics (www.openfabrics.org) soft-

ware stack.

For more information about the DAT collaborative, go to the following site:

http://www.datcollaborative.org

1.2.5 MPI

Message Passing Interface (MPI) is a library specification that enables the development of paral-

lel software libraries to utilize parallel computers, clusters, and heterogeneous networks. Mella-

nox OFED includes the following MPI implementations over InfiniBand:

• Open MPI – an open source MPI-2 implementation by the Open MPI Project

• OSU MVAPICH – an MPI-1 implementation by Ohio State University

Mellanox OFED also includes MPI benchmark tests such as OSU BW/LAT, Intel MPI Bench-

mark, and Presta.

1.2.6 InfiniBand Subnet Manager

All InfiniBand-compliant ULPs require a proper operation of a Subnet Manager (SM) running on

the InfiniBand fabric, at all times. An SM can run on any node or on an IB switch. OpenSM is an

InfiniBand-compliant Subnet Manager, and it is installed as part of Mellanox OFED

1.2.7 Diagnostic Utilities

Mellanox OFED includes the following two diagnostic packages for use by network and data-

center managers:

• ibutils – Mellanox Technologies diagnostic utilities

• infiniband-diags – OpenFabrics Alliance InfiniBand diagnostic tools

1.2.8 Mellanox Firmware Tools

The Mellanox Firmware Tools (MFT) package is a set of firmware management tools for a single

InfiniBand node. MFT can be used for:

• Generating a standard or customized Mellanox firmware image

• Burning a firmware image to a single InfiniBand node

MFT includes the following tools:

• mlxburn - provides the following functions:

1. OpenSM is disabled by default. See Chapter 3.2.2, “OpenSM” for details on enabling it.