QLogic OFED+ Host Software User Guide, Rev. B

1 Introduction
How this Guide is Organized
The QLogic OFED+ Host Software User Guide is organized into these sections:
• Section 1, provides an overview and describes interoperability.
• Section 2, describes how to setup your cluster to run high-performance MPI
jobs.
• Section 3, describes the lower levels of the supplied QLogic OFED+ Host
software. This section is of interest to a TrueScale cluster administrator.
• Section 4, helps the Message Passing Interface (MPI) programmer make the
best use of the QLogic MPI implementation. Examples are provided for
compiling and running MPI programs.
• Section 5, gives examples for compiling and running MPI programs with
other MPI implementations.
• Section 6, describes QLogic Performance Scaled Messaging (PSM) that
provides support for full Virtual Fabric (vFabric) integration, allowing users to
specify InfiniBand Service Level (SL) and Partition Key (PKey), or to provide
a configured Service ID (SID) to target a vFabric.
• Section 7, describes dispersive routing in the InfiniBand ® fabric to avoid
congestion hotspots by “sraying” messages across the multiple potential
paths.
• Section 8, describes open-source Preboot Execution Environment (gPXE)
boot including installation and setup.
• Appendix A, describes the most commonly used options to mpirun.
• Appendix B, describes how to run QLogic’s performance measurement
programs.
• Appendix C, describes the VirtualNIC interface configuration and
administration, providing virtual Ethernet connectivity.
• Appendix D, describes SCSI RDMA Protocol (SRP) configuration that allows
the SCSI protocol to run over InfiniBand for Storage Area Network (SAN)
usage.
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