Qlogic InfiniPath, Install Manual

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3 – Software Installation
InfiniPath and OpenFabrics Driver Overview
IB0056101-00 C 3-15
Q
http://www.rocksclusters.org/
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.
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: It is not necessary to configure the i
path_ether
driver to run MPI jobs.
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
InfiniPath
components
TCP/IP
ipath_ether
OpenSM IPoIB
OpenFabrics
components
ib_ipath