Q-Logic Computer Drive IB0056101-00 G Benutzerhandbuch

5 – Software Installation

Customer Acceptance Utility

IB0056101-00  G

5-31

A

„

Use a PCIe MaxReadRequest size of at least 512 bytes with the 
QLE7240 and QLE7280. QLE7240 and QLE7280 adapters can support 
sizes from 128 bytes to 4096 byte in powers of two. This value is typically 
set by the BIOS. 

„

Use the largest available PCIe MaxPayload size with the QLE7240 and 
QLE7280. The QLE7240 and QLE7280 adapters can support 128, 256, or 
512 bytes. This value is typically set by the BIOS as the minimum value 
supported both by the PCIe card and the PCIe root complex. 

„

Adjust the MTRR setting. Check that the BIOS setting for MTRR is 
Discrete. For more information, see 

ipath_checkout

 is a 

bash

 script that verifies that the installation is correct and 

that all the nodes of the network are functioning and mutually connected by the 
InfiniPath fabric. It must be run on a front end node, and requires specification of a 
nodefile. For example:

$ ipath_checkout [options] nodefile

The 

nodefile

 lists the hostnames of the nodes of the cluster, one hostname per 

line. The format of 

nodefile

 is as follows:

hostname1

hostname2

...

ipath_checkout

 performs the following seven tests on the cluster:

1.

Executes the 

ping

 command to all nodes to verify that they all are reachable 

from the front end.

2.

Executes the 

ssh

 command to each node to verify correct configuration of 

ssh

.

3.

Gathers and analyzes system configuration from the nodes.

4.

Gathers and analyzes RPMs installed on the nodes.

5.

Verifies QLogic hardware and software status and configuration. Includes 
tests for link speed, PIO bandwidth (incorrect MTRR settings), and MTU 
size.

The hostnames in the nodefile are Ethernet hostnames, not IPv4 addresses.