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2 – InfiniPath Cluster Administration
Configuration and Startup
IB6054601-00 D 2-5
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You can check and adjust these BIOS settings using the BIOS Setup Utility. For
specific instructions on how to do this, follow the hardware documentation that came
with your system.
2.4.2
InfiniPath Driver Startup
The ib_ipath module provides low level InfiniPath hardware support. It does
hardware initialization, handles infinipath-specific memory management, and
provides services to other InfiniPath and OpenFabrics modules. It provides the
management functions for InfiniPath MPI programs, the ipath_ether ethernet
emulation, and general OpenFabrics protocols such as IPoIB, and SDP. It also
contains a Subnet Management Agent.
The InfiniPath driver software is generally started at system startup under control
of these scripts:
/etc/init.d/infinipath
/etc/sysconfig/infinipath
These scripts are configured by the installation. Debug messages are printed with
the function name preceding the message.
The cluster administrator does not normally need to be concerned with the
configuration parameters. Assuming that all the InfiniPath and OpenFabrics
software has been installed, the default settings upon startup will be:
■ InfiniPath ib_ipath is enabled
■ InfiniPath ipath_ether is not running until configured
■ OpenFabrics IPoIB is not running until configured
■ OpenSM is enabled on startup. Disable it on all nodes except where it will be
used as subnet manager.
2.4.3
InfiniPath Driver Software Configuration
The ib_ipath driver has several configuration variables which provide for setting
reserved buffers for the software, defining events to create trace records, and setting
debug level. See the
ib_ipath man page for details.
2.4.4
InfiniPath Driver Filesystem
The InfiniPath driver supplies a filesystem for exporting certain binary statistics to
user applications. By default, this filesystem is mounted in the
/ipathfs directory
when the infinipath script is invoked with the "start" option (e.g. at system startup)