Q-Logic IB6054601-00 D Manuel D’Utilisation

2 – InfiniPath Cluster Administration

Configuration and Startup

IB6054601-00 D

2-5

Q

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.

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. 

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.

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)