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To find more information on Red Hat Enterprise Linux 4, and on using kickstart, see:
http://www.redhat.com/
3.7
InfiniPath and OpenFabrics Driver Overview
The ib_ipath module provides low level InfiniPath hardware support, and is the
base driver for both the InfiniPath and OpenFabrics software components. The
ib_ipath module does hardware initialization, handles InfiniPath-specific memory
management, and provides services to other InfiniPath and OpenFabrics modules.
It provides the hardware and hardware management functions for InfiniPath MPI
programs, the ipath_ether Ethernet emulation, and general OpenFabrics
protocols such as IPoIB and SDP. IPoIB is the protocol that allows you to run Internet
Protocol over an IB fabric. The module also contains a Subnet Management Agent.
This diagram shows the relationship between the InfiniPath and OpenFabrics
software. Not all components are shown.
InfiniPath
components
Figure 3-1. Relationship between InfiniPath and OpenFabrics Software
If you want to enable TCP-IP networking for running Ethernet traffic over the
InfiniPath link, you can configure the optional ipath_ether network interface files.
NOTE:
Optional configurable OpenFabrics components are:
IPoIB network interface
■
OpenSM
■
SRP. Provided as a technology demo in this release.
■
uDAPL. Can be used by Intel MPI
■
IB0056101-00 C
TCP/IP
ipath_ether
It is not necessary to configure the ipath_ether driver to run MPI jobs.
InfiniPath and OpenFabrics Driver Overview
OpenFabrics
components
OpenSM
IPoIB
ib_ipath
3 – Software Installation
3-15
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