Installation guide

QLogic OFED+ Host Software Page 9 of 14
5.6 New Features
The following are the new features for the QLogic OFED+ Host software package.
5.6.1 Release 7.0 Features
 New automatic performance tuning utility: ipath_perf_tuning can be run as root to
set the qib driver parameters in the modprobe.conf file. It can be run without
parameters to do a minimal, safe amount of tuning, or the OFED+ Host Software User
Guide describes how to run it interactively to tune node performance for more
situations, such as to improve parallel storage performance, or to turn off unneeded
services.
 The QLogic Congestion Control Architecture (CCA) uses the Performance Scaled
Messaging (PSM) library which is included within QLogic OFED+. The QLogic Fabric
Manager is required to enable and manage QLogic CCA. For information about the
QLogic CCA, refer to the “Fabric Manager Features, Release 7.0” section in the QLogic
InfiniBand Fabric Suite Software Release Notes and the QLogic Fabric Manager User
Guide.
5.6.2 Release 6.1.0 Features
 QLogic OFED+ Host software version 6.1 has been tested with, and fully supports,
OpenFabrics Enterprise Distribution (OFED) 1.5.3, including the QLogic patch sent to
OFED for their 1.5.3.1 patch release.
Important note: As a result of a software fix from QLogic needed to correct a problem
introduced by Mellanox, the full OFED release number is 1.5.3.1. The 1.5.3.1 package is
a complete release of OFED 1.5.3 plus the minor software fix.
 The OFED mlx4 Driver is now a separately selectable component identified by
ofed_mlx4. It can also be separately selected to autostart. QLogic recommends when
installing QLogic HCAs in systems with Mellanox 10GE NIC LOM, not to install the OFED
mlx4 Driver component so that the proper 10GE mlx4_core driver will be used. The
"iba" component will continue to include the mlx4 driver; however the "ib_stack"
component no longer includes mlx4.
 Patch for support for NVIDIA 3.x releases is now included in the tgz. To install on
systems with NVIDIA GPUs, see the README-first.txt file in QLogicIB-*/NVIDIA.