Kernel Patches; Types Of Nodes In A Cluster Environment - Qlogic InfiniPath Install Manual

3 – Software Installation
Software Installation Requirements
information about sysfsutils. This package is called udev on SUSE 9.3,
SLES 9, and SLES 10.
3.2.3

Kernel Patches

Some kernels, such as some versions of Fedora Core 4 (2.6.16), have
CONFIG_PCI_MSI=n as the default. If the InfiniPath driver is being compiled on a
machine without CONFIG_PCI_MSI=y configured, you will get a compilation error.
This default may also be introduced with updates to other Linux distributions or local
configuration changes.
NOTE:
Systems that use the InfiniPath QLE7140, contain an AMD-8131 south bridge and
use kernels between 2.6.12 - 2.6.16 require a patch for a problem that disabled the
use of MSI interrupt handlers, which are used with the QLE7140.
NOTE:
InfiniPath-specific kernels and patches for these problems are available for
download on the QLogic web site. Please go to:
http://www.qlogic.com
Follow the links to the download pages. This topic is also covered in
in the InfiniPath Interconnect User Guide.
3.2.4

Types of Nodes in a Cluster Environment

In a cluster environment different nodes may be used for different functions, such
as launching jobs, for software development, or running jobs. We define these nodes
in the following way:
Front end node. This node will launch jobs. It is referred to as the front end node
■
in this documentation.
Compute node. These are the nodes that are used to run jobs.
■
A development or build node. These are the machines on which examples or
■
benchmarks can be compiled.
Any machine can serve any combination of these three purposes, but a typical
cluster has many compute nodes and only one or just a few front end nodes. The
number of nodes used for development will vary. The terms defined above will be
used in the rest of the documentation.
3-4
IBM provides a pre-installed patched kernel For Power systems.
This does not apply to Power systems running SLES 10.
Q
appendix C.4
IB0056101-00 C