QLogic 7104-3M-CABLE User Manual

7–Installation Verification and Additional Settings

Customer Acceptance Utility

IB0056101-00  H

7-3

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PAT initialization fails for some reason, the code will generate a message in 
the log and fall back to the MTRR mechanism. See 

 for more information.

„

Check the PCIe bus width. If slots have a smaller electrical width than 
mechanical width, lower than expected performance may occur. Use this 
command to check PCIe Bus width:

$ ipath_control -iv

This command also shows the link speed.

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. Missing RPMs can be 
found this way.

„

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

„

To create a nodefile, use the ibhosts program. It will generate a list 

of available nodes that are already connected to the switch. The 
ibhosts

 program is described in more detail in the QLogic Host 

Channel Adapter and QLogic OFED Software Users Guide.