Setup guide

Checking the Status of Network Interfaces
If you continue to have problems with your network, you should verify that your network interfaces are up
and running:
1 Run: ifconfig
■ If your network interface is up and running, an “up” appears in the broadcast report for the interface.
The report includes a line similar to the following: UP BROADCAST RUNNING
MULTICASTMTU:1500Metric:1
■ If your network interface is not up and running, check the connections on your network card. A
green light appears when there is a good connection between your network card and its destination.
If you must reconnect cables on Linux, you must restart the network interface. To restart a network
interface, run: ifconfig <interface_name> up
Viewing InfiniBand Statistics
This section describes how to view port statistics for the workstation and InfiniBand switch, and how to
obtain InfiniBand log files. For more information about configuring, monitoring, and managing the InfiniBand
switch and network, see the documentation provided by the manufacturer of your InfiniBand switch.
Viewing InfiniBand Information for a Workstation
The InfiniBand driver installed on your workstation provides two commands that output statistics and
information about InfiniBand ports. Log in as root, and type the following commands in a terminal:
cat /proc/iba/ <driver_id> /1/port <x> /stats
cat /proc/iba/ <driver_id>/1/port <x> / info
where <x> is the port number on the device, and <driver_id> is the HCA driver ID for your device, for
example: mt25218. A report appears in the terminal for each command. To find out the HCA (Host Channel
Adapter) driver ID, type ls /proc/iba/ | grep mt . The driver number, beginning with mt, will be returned.
Generating InfiniBand Log Files for Support
The script /sbin/iba_capture gathers information about your system and InfiniBand configurations that
can be useful for troubleshooting InfiniBand issues. This script outputs a GZIP file.
As root, open a terminal on your workstation and run /sbin/iba_capture <path and name of output gzip
file>. A GZIP file is generated that includes a number of log files from your system. The help for this
command incorrectly indicates that the output is a TAR file, when it is in fact a GZIP file.
Viewing Port Statistics for a Mellanox IS5030 Switch
The Mellanox IS5030 switch is the recommended switch model for QDR InfiniBand networks. It comes with
a Web-based management console that you can use to configure the switch and monitor the InfiniBand
network.
When you suspect that performance is not optimal on your QDR switch, it is a good idea to view statistics
for each connected port, to determine if they are running normally. The nominal speed for DDR InfiniBand
connections is 5 Gbps, and the nominal speed for QDR connections is 10 Gbps.
To access the management console, your browser must be on the same subnet as the InfiniBand switch,
which has a default IP address of 10.10.10.252.
To view switch port statistics:
1 Open a Web browser and enter the IP address of the InfiniBand switch. The default IP for switches
shipped from Autodesk is 10.10.10.252. The login page appears.
148 | Chapter 3 Networked processing