HP XC System Software Release Notes for Version 4.0

12 Interconnects

This chapter contains information that applies to the supported interconnect types:

• InfiniBand Interconnect (page 39)

• Myrinet Interconnect (page 40)

• QsNet

Interconnect (page 40)

12.1 Installing the OpenSM Subnet Manager

For XC clusters with a single enclosure (a maximum of 32 nodes), follow these steps to install

and run OpenSM for subnet management:

1. Obtain the OpenSM RPM from the OFED stack supplied on the XC Version 4.0 distribution

medium or from the latest kernel patch available on the ITRC.

2. Install the OpenSM RPM on the head node:

# rpm -ivh opensm-3.2.6_20090317-1.ofed1.4.1.x86_64.rpm

3. Run OpenSM:

# service opensmd start

# /etc/init.d/opensmd start

12.2 InfiniBand Interconnect

The notes in this section apply to the InfiniBand interconnect.

12.2.1 An enable Password Problem with Voltaire Switch Version 4.1

The instructions for configuring Voltaire InfiniBand switch controller cards requires you to

change the factory default passwords for the admin and enable accounts, as follows:

Insert new (up to 8 characters) Enter password :

An issue exists on the 144 and 288 port switch models that requires you to enter a password with

exactly eight characters for the enable account. The admin account is not affected.

If the new password does not contain exactly eight characters, the following message appears

when you try to log in with the new password:

Unauthorized mode for this user, wrong password or illegal mode in the first word.

This problem has been reported to Voltaire. As a work around, choose a password that is exactly

eight characters.

12.2.2 Benign Messages with Cisco InfiniBand Switches

HP XC supports the use of Cisco InfiniBand switches, but some functionality originally developed

specifically for Voltaire InfiniBand switches does not function with hardware configurations

containing only Cisco switches. This functionality includes the ib_prodmode_mon and xcgraph

functions.

Ignore the following error messages related to Cisco InfiniBand switches, which might occur at

the following times:

• During cluster_config processing, which is using xcgraph:

Executing C52xcgraph gconfigure

Found no adapter info on IR0N00

Failed to find any Infiniband ports

12.1 Installing the OpenSM Subnet Manager 39